Carrier 48/50FC 04-07, 48/50GC 04-06 User Manual

48/50FC 04--- 07, 48/50GC 04--- 06
Single Package Rooftop Units
with SystemVu™ Controls Version 1.X
and Puronr (R---410A) R efrig er ant

Controls, Start-- Up, Operation

and Troubleshooti ng

IMPORTANT: This literature covers 48/50FC 04--07 and 48/50GC 04 --06 models with SystemVu controls version 1.X (factory--installed

option).

C150173

TABLE OF CONTENTS

Page

SAFETY CONSIDERATIONS 2.........................

GENERAL 3.........................................

Conventions Used in This Manual 3......................

BASIC CONTROL USAGE 3...........................

SystemVu Control (factory--installed option) 3..............

SystemVu Interface 3.................................

Accessory Navigatort Display 4........................

System Pilott andTouchPilott Devices 5................

CCN Tables and Display 5.............................

START--UP 6.........................................

Unit Preparation 6....................................

Refrigerant Service Ports 6.............................

Crankcase Heater 6...................................

Compressor Rotation 6................................

Power Supply 6.....................................

Internal Wiring 6.....................................

Evaporator Fan 6....................................

Condenser Fans and Motors 6...........................

Return--Air Filters 8..................................

Outdoor--Air Inlet Screens 8............................

Accessory Installation 8...............................

Gas Heat (48FC and 48GC) 8...........................

CONTROLS QUICK SET--UP 8.........................

Control Set Point and Confirmation Log 8.................

Initial Startup 8......................................

Thermostat Control 9.................................

Space Temperature Sensor Control -- Direct Wired

(T--55 or T--56 or T --59) 9.............................

Space Humidistat Control 9............................

Space Relative Humidity Sensor Control 9.................

CCN Communication 9...............................

CCN Linkage Control 9...............................

1

System Pilott -- Communication Space Sensor 9...........

Accessories 9.......................................

Programming Operating Schedules 10....................

SERVICE TEST 10....................................

Independent Outputs 10...............................

Fan Test 10.........................................

Cooling Test 11.....................................

Heating Test 11......................................

Automatic Test 11....................................

THIRD PARTY CONTROL 12..........................

Cooling/Heating Control 12............................

Dehumidification Control 12...........................

Remote Occupancy 12................................

Remote Shutdown 12.................................

Alarm Output 12.....................................

Economizer Damper Control 12.........................

CONTROLS OPERATION 12...........................

Display Configuration 12..............................

Unit Configuration 12.................................

General Operation 13.................................

Demand Determination 13.............................

Occupancy Determination 15...........................

Indoor Fan Operation 16...............................

Cooling Operation 16.................................

Optional Humidi--MiZer

Indoor Fan Based Dehumidification 21...................

Heating Operation 21.................................

Supply Air Tempering 22..............................

Two Position Damper Operation 22......................

Economizer Operation 22..............................

Power Exhaust 24....................................

Indoor Air Quality (IAQ) 25............................

Pre--occupancy Purge 26...............................

Temperature Compensated Start 26.......................

Linkage 26.........................................

Carrier Comfort Network

BACnet Network Operation 26.........................

Alarm Handling 27...................................

TROUBLESHOOTING 27..............................

Complete Unit Stoppage 27............................

Restart Procedure 27..................................

Faults and Alerts 27..................................

Control Module Communication 34......................

Communication Failures 34............................

Cooling Troubleshooting 35............................

Humidi--MiZer System Troubleshooting 36................

Economizer Troubleshooting 37.........................

Heating Troubleshooting 38............................

Phase Protection 41..................................

Thermistor Troubleshooting 41.........................

Sensor Trim 41......................................

Transducer Troubleshooting 41.........................

R

Dehumidification System 17......

R

(CCN) Operation 26............

MAJOR SYSTEM COMPONENTS 46....................

General 46.........................................

Main Base Board (MBB) 54............................

Integrated Gas Control (IGC) Board 56...................

Protective Devices 57.................................

Space Mounted Sensors 57.............................

Carrier Comfort Network

APPENDIX A: SystemVut Controller Display 61...........

APPENDIX B: SystemVu Controller Text Point Reference 83...

APPENDIX C: Navigatort Display 84....................

APPENDIX D: SystemVu Controller CCN Tables 95..........

APPENDIX E: BACnet Points List 119....................

CONTROL SET POINT AND CONFIGURATION L OG 132...

UNIT S TART--UP CHECKLIST 143......................

R

(CCN) Interface 59.............

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment. Untrained personnel can
perform the basic maintenance functions of replacing filters.
Trained service personnel should perform all other operations.

When working on air-conditioning equipment, observe precautions in
the literature, tags and labels attached to the unit, and other safety
precautions that may apply. Follow all safety codes. W ear safety
glasses and work gloves. Use quenchi ng cloth for unbrazing
operations. Have fire exti ngui shers availa ble for all brazing operations.

Follow all safety codes. Wear safety glasses and work gloves. Have
fire extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult local
building codes and National Electrical Code (NEC) for special
requirements.

Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.

Understa nd the signal words DANGER, WARNING, and CAUTION.
These words are used with the safet y--alert symbol. DANGER
identifies the most serious hazards which will result in severe personal
injury or death. WARNING signifies a hazard which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which may resul t in minor personal injury or product and
property damage. NOTE is used to highlight suggestions which will
result in enhanced installation, reliability, or operation.

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury
or death.

Before performing service or maintenance operations on
unit, turn off main power switch to unit and install lockout
tag. Ensure electrical service to rooftop unit agrees with
voltage and amperage listed on the unit rating plate.

.

2

!

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may cause equipment
damage.

This unit uses a microprocessor--based electronic control
system. Do not use jumpers or other tools to short out
components or to bypass or otherwise depart from
recommended procedures. Any short--to --ground of the
control board or accompanying wiring may destroy the
electronic modules or electrical components.

!

WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal
injury, death and/or property damage.

Improper installation, adjustment, alteration, service, or
maintenance can cause property damage, personal injury, or
loss of life. Refer to the User’s Information Manual
provided with this unit for more details.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance. What

to do if you smell gas:

1. DO NOT try to light any appliance.

2. DO NOT touch any electrical switch, or use any phone in
your building.

3. IMMEDIATELY call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.

4. If you cannot reach your gas supplier, call the fire
department.

GENERAL

This publication contains Start--Up, Controls, Operation, Service,
and Troubleshooting information for the 48/50FC and 48/50GC
rooftop units equipped with the factory--installed optional
SystemVut controls (version 1.X or higher) and use Puronr
(R--410A) refrigerant. The specific base unit installation
instructions, service manual and/or wiring label diagram may also
be required in conjunction with this book as a guide to a specific
unit on the roof. All units in Table 1 are Staged Air Volume
(SAVt) units that allow for stand--alone or network operation.

Table 1 – Rooftop Units

MODEL SIZE NOMINAL TONS

04 3

48/50FC

48/50GC

Conventions Used in This Manual

The following conventions for discussing configuration points for
the local display (SystemVu controller or Navigatort accessory)
will be used in this manual.

Menu paths will be written with the main menu name first, then
any menus or sub menus, each separated by an arrow symbol ()
and will also be shown in bold and italics. As an example, the
General sub menu which is located in the Setting main menu under
Unit Configuration menu would be written as SETTINGS

UNIT CONFIGURATIONSGENERAL.

05 4
06 5
07 6
04 3
05 4
06 5

This path name will show the user how to navigate through the
local display to reach the desired menu. The user scrolls through
the Menus using the up and down keys. The arrow symbol in the
path name represents pressing ENTER to move into the next level
of the menu structure.

Point names are referenced in in parentheses and bold and italics as
would be shown on the local display.

CCN point names are also referenced for users configuring the
unit with C C N software instead of the lo cal display. S ee
Appendix A at the end of this manual.

BASIC CONTROL USAGE

SystemVu Control (factory-- installed option)

The SystemVu control is a comprehensive unit-management
system. The control system is easy to access, configure, diagnose
and troubleshoot.

The SystemVu control system is fully communicating and
cable-ready for connection to the Carrier Comfort Network
(CCN), Carrier i--Vu, and Third Party BACnet* building
management systems. The control provides high-speed
communications for remote monitoring via the Internet. Multiple
units can be linked together (and to other Direct Digital Control
(DDC) equipped units) using a 3-wire communication bus.

The SystemVu control system is easy to access through the use of a
integrated display module. A computer is not required for start-up.
Access to control menus is simplified by the ability to quickly
select from 7 main menu items. An expanded readout provides
detailed explanations of control information. Only six buttons are
required to maneuver through the entire controls menu. The
display readout is designed to be visible even in bright sunlight.

System u

RUN
ALERT
FAULT

TESTTEST

SystemVu Interface

This integrated device is the keypad interface used to access the
control information, read sensor values, and test the unit. The
interface is located in the main control box and is standard on all
units. The interface is a 6 --key, 4x30 character, LCD (liquid--crystal
display) display module. The interface also contains Status LEDs.
(See Fig. 1.) The interface is easy to operate using 6 buttons and
themainmenustructuresshowninFig.2.

Through the SystemVu interface, the user can access all of the
inputs and outputs to check on their values and status, configure
operating parameters, and evaluate the current decision status for
operating modes. The control also includes an alarm history which
can be accessed from the display. The user can access a built--in test
routine that can be used at start--up commissioning and
troubleshooting.

* BACnet is a registered trademark of ASHRAE (American Society of

Heating, Refrigerating and Air --- Conditioning Engineers).

BACK ENTER MENU

C14319

Fig. 1 -- SystemVu Interface



3

Fig. 2 -- SystemVut -- Main Menu Structures

SystemVu Interface Operation

Units are shipped from the factory with the SystemVu interface
FIOP, located in the main control box. (See Fig. 1.) In addition, the
interface has up and down arrow keys, BACK, ENTER, MENU,
and TEST keys. These keys are used to navigate through the
different levels of the menu structure. All discussions and examples
in this document will be based on the SystemVu display except in
the Navigatort display section. See the Accessory Navigator
Display section for further details and Table 2 for the Navigator
menu structure and usage.

The six keys are used to navigate through the display structure,
which is organized in a tiered menu structure. If the buttons have
not been used for a period, the display will default to a standby
screen intended to provide a quick overall look at the system. To
show the top--level display, press any key first to turn the display
backlight on, and then press the MENU key. Then use the up and
down arrow keys to scroll through the top --level menus. These are
showninFig.2andlistedinAppendixA.

When a specific menu or sub--menu is located, push the ENTER
key to enter the menu. Depending on the menu, there may be
additional tiers. Continue to use the up and down keys and the
ENTER key until the desired display item is found. At any time,
the user can move back a menu level by pressing the BACK key.
Once an item has been selected the display will flash showing the
item, followed by the item value and then followed by the item
units (if any). Pressing the TEST button at any time will jump the
display to the test menu. Pressing the MENU button any time will
jump the display to the main menu.

Items in the Configuration and Service Test menus are password
protected. The display will prompt the enter password screen when
required. Use the ENTER, BACK, and arrow keys to enter the four
digits of the password. The default user password is 1111.

Pressing the BACK and ENTER keys simultaneously will show an
expanded text description screen on the display indicating the full
meaning of each display point. To put the screen in standby, hold
down the BACK key for 5 seconds.

Some points can be force d from the System Vut interface. To force a
variable, follow the same process as editing a configuration
parameter. A forced variable, regardless where the force has come
from will be displayed with a lower case “f” following its value.
For example, if ECON CMD POSITION is forced, the display
shows “80%f”, where the “f” is to signify a force on the point.
Remove the force by selecting the point that is forced with the key
ENTER and then pressing the up and down arrow keys
simultaneously. Pressing ENTER and BACK on a forced item will
display the expanded description for that item including the force
level that is currently applied. Depending on the type of unit
(48FC,GC or 50FC,GC), factory--installed options and
field--installed accessories, some of the items in the various menus
may not apply.

a48--- 10366

Accessory Navigatort Display

The accessory hand-held Navigator display can be used with the
48/50FG, GC units. (See Fig. 3.) The Navigator display is plugged
into the LEN (local equipment network) port on either the
SystemVu display or the Main Base Board (MBB).

Navigator Display Operation

The Navigator display has up and down arrow keys, an ESCAPE
key and an ENTER key. These keys are used to navigate through
the different levels of the display structure.

The four keys are used to navigate through the display structure,
which is organized in a tiered mode structure. If the buttons have
not been used for a period, the display will default to the AUTO
VIEW display category as shown under the RUN STATUS
category. To show the top-level display, press the ESCAPE key
until a blank display is shown. Then use the up and down arrow
keys to scroll through the top-level categories. These are listed in
Appendix C and will be indicated on the Navigator display by the
LED next to each mode listed on the face of the display.

C

o

m

f

o

r

t

L

N

in

A

V

I

k

G

A

T

O

T

IM

E

W

L

W

S

E

T

M

O

Ru

n Sta

S

e

rv

ice

T

em

p

era

P

res

s

ure

S

e

tpo

in

ts

In

pu

ts

O

utp

uts

C

on

fig

u

ra

tion

T

im

e C

lo

ck

O

p

er

ating

Mod

es

A

la

rm

s

E

N

T

E

R

Fig. 3 -- Accessory Navigator Display

When a specif i c mode or sub-mode is located, push the ENTER key
to enter the mode. Dependi ng on the mode, there may be additional
tier s. Continue to use the up and down keys and the ENTER keys
until the desire d display item is found. At any time, the user can move
back a mode level by pressing the ESCAPE key. Once an item has
been selected the display will flash showing the item, followed by the
item value and then followed by the item units (if any).

Items in the Configuration and Service Test modes are password
protected. The display will flash PASS and WORD when required.
Use the ENTER and arrow keys to enter the four digits of the
password. The default password is 1111.

R

E

1

2

T

.

5

8

5

4

T

.

6

°

F

4

4

P

.1

°

F

4

4

.

0

°

F

D

E

Ala

rm

Sta

tus

tu

s

Te

s

t

ture

s

s

E

S

C

C06321

4

RUN

/

STAT US

Auto View of

Run Status

(VIEW)



Cooling

Status

(COOL)



Heating

Status

(HEAT)



Vent ilat ion

Status

(VENT)



Assigned I/O

Channels

(A.IO)



Vers io ns

(VERS)

SERVICE

TEST

Service T est

Mode

(TEST)



T es t Independent

Outputs

(INDP)



Te s t F a n s

(FANS)



Test Cooling

(COOL)



Te s t H e at i n g

(HEAT)

Table 2 – Navigator Mode and Menu Display Structure

TEMPERATURES PRESSURES

SET-

POINTS

INPUTS OUTPUTS CONFIGURATION TIMECLOCK

Thermostat

Inputs

(STAT)



Switch

Inputs

(SW)



Analog

Inputs

(AIS)



General

Inputs

(GEN)

General
Outputs

(GEN)



Cooling
Outputs
(COOL)



Heating
Outputs

(HEAT)

General Unit

Config

(GEN)



Indoor Fan

Config
(I.FAN)



Economizer

Config

(ECON)



Building Net

Config
(NET)



User Display

Config

(DISP)

Time o f Da y

(TIME)



Month, Date

Day and Year

(DATE)



Daylight
Savings

Config

(DST)



Schedules

Adjust

(SCHD)



Holiday

Adjustment

(HLDY)

OPERATING

MODES

ALARMS

Curr Active

Alarm

(CURR)



History

(HIST)



Reset All

Current

Alarms

(R.CUR )



Alarm Reset

History
(R.HIS)

Pressing the ESC and ENTER keys simultaneously will display an
expanded text description across the display indicating the full
meaning of each display point. Pressing the ESCAPE and ENTER
keys when the display is blank (MODE LED level) will return the
display to its default menu of rotating AUTO VIEW display items.
In addition, the password will need to be entered again before
changes can be made.

Changing item values or testing outputs is accomplished in the
same manner. Locate and display the desired item. If the display is
in rotating auto-view, press the ENTER key to stop the display at
the desired item. Press the ENTER key again so that the item value
flashes. Use the arrow keys to change the value of state of an item
and press the ENTER key to accept it. Press the ESCAPE key and
the item, value or units display will resume. Repeat the process as
required for other items.

There are some points that can be forced from the Navigator
display. If the user needs to force a variable, follow the same
process as when editing a configuration parameter. A forced
variable, regardless where the force has come from will be
displayed with a blinking “f” on a Navigator display following its
value. For example, if economizer commanded position (EC.CP) is
forced, the Navigatort display shows “80f”, where the “f” is
blinking to signify a force on the point. Remove the force by
selecting the point that is forced with the key ENTER and then
pressing the up and down arrow keys simultaneously.

Depending on the type of unit (48FC,GC or 50FC,GC),
factory-installed options and field-installed accessories, some of the
items in the various Mode categories may not apply.

See Table 2 and Appendix C for full Navigator display menu
layout.

System Pilott and Touch Pilott Devices

The System Pilot device (33PILOT-01) and Touch Pilot device
(33CNTPILOT) can be used as CCN communication
user--interfaces. These devices can be put on the CCN bus and
addressed to communicate with any other device on the network.
Unlike the SystemVut display and Navigator display, these pilots
read the unit’s CCN tables and its CCN points can be monitored,
forced, or configured. The Pilot devices can be used to install and
commission a 3Vt zoning system, linkage compatible air source,
universal controller, and all other devices operating o n the Carrier
communicating network.

Additionally, the System Pilot device can serve as a wall-mounted
temperature sensor for space temperature measurement. Occupants
can use the System Pilot device to change set points. See Fig. 4 for
System Pilot device details.

CCN Tables and Display

In addition to the unit--mounted SystemVut display, the user can
also access the same information through the CCN tables by using
the service tool or other CCN programs/devices. The variable
names used for the CCN tables and the SystemVu display menus
may be different and more items may be displayed in the CCN
tables. Details on the CCN tables are included in Appendix D.

NAVIGATE/
EXIT

SCROLL

+

PAGE

-

Fig. 4 -- System Pilott User Interface

Force Hierarchy

There is a hierarchy in SystemVu controls with regards to forcing a
point. Programs and devices write a force at different priority
levels. A higher level (smaller number, 1 being the highest) will
override a lower level force. The SystemVu controller uses a
Control Force at level 7. The Navigatort device writes a Service
Force which is level 3. System Pilott and Touch Pilott devices
write Supervisor Forces at level 4. Network programs can be set to
write different level priority forces.

NOTE: In the case of a control power reset, any force in effect at
the time of power reset will be cleared.

IMPORTANT: All further discussions and examples in this
document will be based on the SystemVut controller.

MODIFY
SELECT

C06322

5

START-UP

IMPORTANT: Do not attempt to start unit, even momentarily,

until all items on the Start--Up Checklist (see page 143) and the
following steps have been read/completed.

Unit Preparation

Check that unit has been installed in accordance with these
installation instructions and all applicable codes.

Refrigerant Service Ports

The refrigerant system has a total of 3 Schrader-type service gauge
ports per circuit. One port is located on the suction line, one on the
compressor discharge line, and one on the liquid line. Be sure that
caps on the ports are tight.

Crankca se Heater

The compressor is equipped with a crankcase heater. There is a control
function used to turn the crankcas e heaters on and off whe n the
compre ssor is not running. This is a configurable value for which the
factory default value is set to 65_F . If the ambie nt is above the select ed
value the control will preve nt the crankca se heater from turning on.

IMPORTANT: Unit power must be on for 24 hours prior to
start--up to allow the crankcase heater to run. Otherwise, damage to
the compressor may result.

Compressor Rotation

!

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in unit damage.

Improper wiring will cause compressor stoppage and alarm.
Correct wiring by switching leads as indicated below.

On 3-phase units, it is importa nt to be cert ain the compre ssors are
rotating in the proper dire ction. To deter mine whether or not
compre ssors are rotati ng in the proper direct ion, use a phase-rot ation
mete r on the unit input power to check for L1-L2-L3 or clockwise
rotation or use the Service Test mode to energize a compressor. If the
compre ssor is rotati ng in the wrong direction, the controls will stop the
compressor and display alarm for “Circ ui t A Reverse Rotati on”.

NOTE: Indoor or outdoor fan rotation direction may not indicate
proper input power phase sequence, as some 3-phase units use
single-phase fan motors.

To correct the wrong compressor rotation direction, perform the
following procedure:

1. Turn off power to the unit and lock out the power.

2. Switch any two of the incoming unit power leads.

3. Turn on power to the unit.

4. Verify corrected compressor rotation.

Power Supply

All 208/230-v units are factory wired for 230-v power supply. If
the 208/230-v unit is to be connected to a 208-v power supply, the
transformers must be rewired by moving the wire from the
230-volt connection and moving to the 200-volt terminal on the
primary side of the transformer. Refer to unit label diagram for
additional information.

Internal Wiring

Check all electrical connections in unit control boxes; tighten as
required.

Evaporator Fan

The Evaporator fan does not need to be checked for rotation as it
only operates in one direction. Refer to the unit product data for
full Fan Performance tables and physical data. The specific unit’s
fan performance table is printed and adhered to the control box
high voltage cover. See Fig. 5 for an example fan performance
table.

Use the job specifications and unit fan performance table to determine
the operating mode specific fan speeds. The following instructions are
included in the unit i nstallation instructions. When adjusting the
Heating Fan Speed and High Cooling Fan Speed, ensure that the
CFM is not lower than the minimum CFM allowed in the product
data.

1. Check the job specifications for the CFM (cubic feet per
minute) and ESP (external static pressure) required.

2. Using the chart on the Fan Speed Set Up labels (see Fig. 5),
calculate the RPM from the CFM and ESP for the base unit
plus any field accessories (as listed on the label).

NOTE: The Fan Speed Set Up labels are located on the High
Voltage cover in the Control Box.

3. Press any key on the SystemVu interface to activate the
display backlight and then press the MENU key.

4. Using the UP and DOWN arrow keys highlight SETTINGS
and then press ENTER.

5. Use the DOWN arrow key highlight the UNIT
CONFIGURATIONS menu then press ENTER.

6. Highlight UNIT CONFIGURATIONS then press ENTER.

7. Highlight INDOOR FAN and then press ENTER.

8. Refer to the job specifications to set the following,
determining the values per the RPM Calculator label
(Figure 5). Use the UP and DOWN arrow keys and the
BACK key to set the values. Press ENTER after setting
each value to continue to the next selection.

S IDF VENT SPD

S IDF HEAT SPD
S IDF LOW COOL SPD

S IDF HIGH SPD
S IDF FREE COOL SPD

Service test mode can also be used to temporarily operate the
Evaporator Fan with a percentage (0-- 100%) command. The fan
test menu will show the converted RPM from the percentage being
commanded. Refer to the Service test section for more details.

Adjust the IDF Maximum Fan Speed (IDF MAX SPEED) to
restrict higher fan speeds as needed for sensitive applications.

IMPORTANT: The IDF Maximum Fan Speed (IDF MAX
SPEED) RPM must not produce a supply CFM that is lower than
the minimum CFM allowed in the product data for heating and
cooling. The IDF Maximum Fan Speed (IDF MAX SPEED) must
also be grea ter than or equal to the highest operating mode speed
setting.

Condenser Fans and Motors

Condenser fans and motors are factory set.

6

RPM

Calculator

1500
1625
1750
1875
2000

CFM

2125
2250

UNIT MODEL NUMBER

Field Accessories:

1 Stage E Heat
2 Stage E Heat

2375
2500

Economizer

0.2

1301
1381
1463
1548
1633
1720
1808
1897
1987

66
80

107

ESP in. wg

0.4

1477
1544
1615
1688
1764
1842
1921
2003
2068

66
80 80 80 80 80 80 80

107 107 107 107 107 107 107

Fig. 5 -- Example of Fan Speed Set Up Labels

0.6

1639
1699
1763
1828
1897
1967
2040
2115
2191

66

0.8

1788
1843
1902
1962
2025
2090
2157
2227
2298

66

1.0

1925
1976
2031
2087
2146
2208
2271
2336

66

1.2

2054
2101
2152
2206
2262
2320
2380

66

1.4

2174
2220
2268
2318
2372

66 66

1.6 1.8 2.0

2289
2332
2378

a50--- 10219

7

INDOOR

Y

BLOWER
ACCESS
PAN EL

CONTROL BOX
AND GAS SECTION
ACCESS PANEL

Fig. 6 -- Panel and Filter Locations

FILTER
ACCESS PANEL

INDOOR COIL
ACCESS PANEL

UNIT BACKUNIT FRONT

a48--- 9937

Return--Air Filters

Check that correct filters are installed in filter tracks (see Physical
Data table in unit Product Data). Do not operate unit without
return-air filters. Determine the filter change run time (DIRTY
FILTER TIME) to be set in the quick setup configurations menu.

Outdoor--Air Inlet Screens

Outdoor-air inlet screens must be in place before operating unit.

Accessory Installation

Check to make sure that all accessories including space thermostats
and sensors have been installed and wired as required by the
instructions and unit wiring diagrams.

Gas Heat (48FC a nd 48GC)

Inspect the gas heat section of the unit. Verify the number of
burners match the number of heat exchanger openings and the
burner assembly is properly aligned. If the orifices were changed
out for elevation or Liquid Propane purposes, verify proper
installation. Visually inspect other components in heat section.

Verify gas pressures before turning on heat as follows:

1. Close the field-supplied manual gas shut off valve, located
external to the unit.

2. Connect a pr essure gauge to the supply gas pressure tap,
located on the fie ld-supplied manual gas shut off valve (see
Fig. 7).

MANUAL GAS SHUT OFF VALVE

(FIELD SUPPLIED)

GAS

SUPPL

SUPPLY GAS
PRESSURE TAP
(1/8˝ NPT PLUG)

TO

UNIT

UNION

Fig. 7 -- Field Gas Piping

SEDIMENT TRAP

a48--- 9382

3. Connect a pressure gauge to the manifold pressure tap on
the burner assembly located inside the unit.

4. Open the field-supplied manual gas shut off valve. Enter
Service Test mode by setting TEST MODE to “ON” using the
SystemVut controller interface. Use the Service Test feature
to set HEAT 1 TEST to ON (first stage of heat) using the
SystemVu controller interface.

5. After the unit has run for several minutes, verify the supply
gas pressure is adequate per the base unit installation in­structions. If not, adjust accordingly.

NOTE: Supply gas pressure must not exceed 13.0--in. wg.

6. Set HEAT 1 TEST to OFF using the SystemVu controller
interface.

7. Exit Service Test mode by setting TEST MODE to “OFF”
using the SystemVu controller interface.

CONTROLS QUICK SET--UP

The following information will provide a quick guide to setting up
and configuring the 48/50FC and 48/50GC series units with
System Vu controls. Unit controls are pre-configured at the fac t ory for
factory-installed options. Field-installed accessories will require
configuration at start-up. Initial System Startup is recommended for
initial start--up. Additionally, specific job requirements may require
changes to default configuration values. See Appendix A and other
sections of the se instructions for more details. Refer t o the Major
System Components or accessory installation instructions for specific
wiring detail.

Control Set Point and Configuration Log

During start up, accessory installation, and equipment service set
points and/or configuration changes might have to be made. When
setting set points or configuration settings, documentation is
recommend. The Control Set Point and Configuration Log starting
on page 132 should be filled out and left with the unit at all times,
a copy should also be provided to the equipment owner. A USB
jump drive can be used to back up the unit’s configurations. Refer
to the USB Operation section for details.

Initial Startup

Initial Startup refers to the first time this particular unit has a startup
performed. The SystemVu controller will continually display the
Initial Startup prompt until it is completed. To complete the initial
startup you must complete the Quick Setup, Network Setup, and
the System Auto Test.

8

Quick Setup

This a list of common adjusted configurations set during startup.
These are common accessories, and control means. Set the list in
Table 3. After setting these per the specific unit set the QUICK
SET CHKLIST point to done.

Table 3 – Quick Setup Menu Items

SystemVu™ Display Expanded Name Range Default

QUICK SETUP CONFIG QUICK SETUP

TIME Clock Hour and Minute HH:MM

DATE Current Date MM/DD/YYYY

STARTUP DELAY Unit Startup Delay 10 to 600 30

UNIT CONTR OL TYPE Unit Control Type 0=TSTAT,

THERMOSTAT TYPE Thermostat Hardware

DIRTY FILTER TIME Change Filter Timer 0to9999 600

HEATINGSTAGQTY Number of Heating

VENT METHOD V entilation Method 0=NONE

FREECOOL MAX OAT Free Cooling Max OAT 0to90 65

FIRE SHUTDOWN SW Fire Shutdown S wi tch 0=No Switch,

QUICK SET CHKLIST QUICK SETUP

* These defaults change based on the Unit model number.

CONFIG MENU

Type

Stages

CHECKLIST

1=SPACE SEN,
2=RAT SEN

0=CONV 2C2H,
1=DIGI 2C2H,
2=CONV 3C2H,
3=DIGI 3C2H

1to2 2*

1=ECON
2=2POS DMPR
3=ERV
4=ECON ERV

1=N/Open
2=N/Close

0=Undone,
1=View,
2=Done

0

2

0*

0*

0

Network Setup

This is a shortcut to the Network Settings submenu. In this sub
menu are the specific network settings required to get the network
piece up and running. After setting these per the specific unit set
the NETWORK CHKLIST point to done.

System Auto Test

Turning this to Start will run enable test mode and execute the System
Auto Test. After the auto test has completed, set this to done.

Thermostat Control

Wire accessory thermostat to the corresponding R, Y1, Y2, W1,
W2, and G terminals on the Main Base board.

The Unit Control Type configuration, (UNIT CONTROL TYPE)
default value is for thermostat (0) so there is no need to configure
this item.

The Thermostat Hardware Type, (THERMOSTAT TYPE) selects
the unit response to the thermostat inputs above.

NOTE: May not be compatible with heat anticipator thermostats.

Space Temperature Sensor Control -- Direct Wired
(T--55 or T--56 or T--59)

Wire accessory space temperature sensor(s) to the T-55 terminals
on the field connection terminal board located at the unit control
box. Refer to Space Mounted Sensors section (page 57) for
additional information.

The Unit Control Type configuration, (UNIT CONTROL TYPE)
must be set to Space Sensor (1).

Space Humidistat Control

For units with factory installed Humidi--MiZerRsystem option, the
humidistat input is defaulted for use on the Y3 thermostat input
screw terminal as a normally open switch. This can be changed
with the Humidistat Switch Channel configuration (HUMSTAT

CHANNEL) and the Humidistat switch type configuration
(HUMSTAT SW TYPE).

Space Relative Humidity Sensor Control

For units with factory installed Humidi--MiZer system option, a
Relative Humidity (RH) sensor input can be used in addition to or
in place of the Humidistat switch. This can be done by wiring into
one of the configurable analog inputs and setting the Space
Relative Humidity sensor channel (SPRH SENSOR CHAN) to the
input channel selected. The most field accessible input channel is
AI06 located at TB5--5 on the MBB (Main Base board).

CCN Communication

First configure the building protocol SETTINGS  NETWORK
SETTINGS  BAS PROTOCOL to CCN (default is 0 = NONE).
Configure the following under the CCN menu (SETTINGS 
NETWORK SETTINGS  CCN).

CCN ELEMENT # -- D e f a u l t i s 1
BUS NUMBER -- D e f a u l t i s 0
CCN BAUDRATE -- Default is 2 = 38400

CCN Linkage Control

The CCN communication must be properly configured for the
units and all other devices. Linkage configuration is automatically
done by the supervisory CCN Linkage device.

The unit control type configuration, (UNIT CONTROL TYPE)
must be set to space sensor (1).

The factory location of the SAT sensor will read accurately for
heating and cooling for proper operation with linkage applications,
therefore the SAT heating mode sensing configuration (SAT
DURING HEAT?) is enabled from the factory. If a more accurate
SAT reading is need, the sensor can be re--located into the duct and
no configuration adjustment needed.

System Pilott -- Communication Space Sensor

Install the System Pilot device and connect the CCN communication
bus from it to the unit’s CCN connect ion on TB4 -- BAS connect or of
the Main Ba s e Boa rd (MBB). Configure the unit’s CCN
communic ation element number, bus number, and baud rate. Refer to
the System Pilot’s installation instructions for configuring it to be used
as a space temperature and attaching it to a unit.

Accessories

Below are quick configuration settings for field--installed
accessories. When factory--installed as options the points will
already be configured. See the Space Mounted Sensors section
(page 57), third party control, control connection tables, and CCN
or Display parameter tables for any accessories not mentioned
below and refer to installation manual of the accessory.

Economizer

When an economizer is field-- installed, the unit must be configured
for it by setting SETTINGSUNIT CONFIGURATIONS 
ECONOMIZER  VENT METHOD to ECON. The default
settings for the other economizer configurations should be
satisfactory. If they need to be changed, additional information
about these configuration settings can be found in the Economizer
section.

Power Exhaust

When power exhaust is field-- installed, the unit must be
configu red for it by setting SETTINGSUNIT

CONFIGURATIONSECONOMIZER  POWER EXHAUST
CONFIGS  PE1 RELAY CHANNEL to the channel the

accessory was wired into. The default settings for the other power
exhaust configurations should be satisfactory. If they need to be
changed, additional information about these configurations can be
found in the Power Exhaust section.

Electric Heat

When electric heat is field--installed, the number of electric heat stages
must be configured by setting SETTINGS  UNIT

CONFIGURATI ONS  HEATING  HEATING STAGE QTY

per the installed heater.

9

Fire Shutdown

When Fire Shutdown or Smoke Detector sensors are
field--installed, the unit must be configured for it by setting

SETTINGS  UNIT CONFIGURATIONS  SWITCH INPUTS
CONFIGS  FIRE SHUTDOWN SW to normally open (0) or

normally closed (1).

Outdoor Enthalpy

When an Outdoor Enthalpy sensor is field--installed, the unit must
be configured for it by setting SETTINGS  UNIT

CONFIGURATI ONS  ANALOG INPUTS CONFIGS  OARH
SENSOR CHAN to the channel number the sensor was wired into.

IAQ Sensor

When a CO2sensor is field--installed, the unit must be
configu red for it by setting SETTINGS  UNIT

CONFIGURATIONS  ANALOG INPUT CONFIGS  IAQ
SENSOR CHAN selects the unit response to this input. Default

conversion to 0 to 2000 ppm.

OAQ Sensor

When an Outdoor Air Quality sensor is field--installed, the unit
must be configured for it by setting SETTINGS  UNIT

CONFIGURATIONS  ANALOG INPUT CONFIGS  OAQ
SENSOR CHAN. Default conversion to 0 to 2000 ppm.

Filter Status

When a Filter Status Switch is field--installed, the unit must be
configured by setting the input channel it is wired to and normal state.

SETTINGSUNIT CONFIGURATIONSSWITCH INPUT
CONFIGS FILTER SW CHANNEL and FILTER SW TYPE.

Phase Monitor

When a phase monitor is field--installed, the unit must be
configured by setting the input channel it is wired to and normal
state SETTINGUNIT CONFIGURATIONSSWITCH INPUTS

CONFIGSPHASE MON CHANNEL and PHASE MON SW
TYPE.

Two Position Damper

When a Two Position damper is field--installed, the unit must be
configured by setting the output channel it is wired to.

SETTINGS  UNIT CONFIGURATI ON  GENERAL  2POS/
ERV CHANNEL.

Programming Operating Schedules

When the building automation system you have the SystemVut
controller configured for (BAS Protocol Select) is None (0) or
CCN (1) the SystemVu controller can follow a standard CCN
occupancy table. The occupancy can be modified from any CCN
tool or from the local display.

OCCUPANCY SCHEDULE — For flexibility of scheduling, the
occupancy programming is broken into eight separate periods. For
each period the schedule contains the following fields: Day of
Week, Occupied From, and Occupied To.

DAY OF WEEK — The day of week configuration consists of
eight fields corresponding to the seven days of the week and a
holiday field in the following order: Monday, Tuesday,
Wednesday, Thursday, Friday, Saturday, Sunday, and Holiday. If a
1 is configured in the corresponding place for a certain day of the
week, the related “Occupied from” and “Occupied to” times for
that period will take effect on that day of the week. If a 1 is placed
in the holiday field, the related times will take effect on a day
configured as a holiday. A zero means the schedule period will not
apply to that day.

Day of week: Range 0 or 1
Default Values 0 for all of the periods.

OCCUPIED FROM — This field is used to configure the hour and
minute, in 24 hour clock, that the mode for the controller will
switchtooccupied.

Occupied From: Units Hours:Minutes
Range 00:00 to 24:00
(Minutes 00 to 59)
Default Value 00:00

OCCUPIED TO — This field is used to configure the hour and
minute, in 24 hour clock, that the mode for the controller switches
from occupied to unoccupied.

Occupied To: Units Hours:Minutes
Range 00:00 to 24:00
(Minutes 00 to 59)
Default Value 00:00

When the building automation system configured to (BAS
PROTOCOL) is BACnet, the occupancy and holiday information
will be reset to defaults in preparation for receiving a BACnet
occupancy object. While participating on a BACnet network these
configurations cannot be changed at the local interface or with
CCN tools. All scheduling is done from the BACnet interface
designated to provide schedules.

SERVICE TEST

The Service Tes t function can be used to verify proper operation of
compre ssors, heating sta ges, indoor f an, outdoor fa ns ,
Humidi--MiZer
crankcase heaters, and the alarm relay. Use of Service Test is
recommended at initial system start up and during troubleshooting.
(See Table 4 for point deta i ls)

Service T est mode has the following changes from normal opera t ion:

S Outdoor air temperature limits for cooling circuits, economizer,

and heating are ignored.

S Normal compressor time guards and other staging delays are

reduced to one minute or less.

S Circuit stri ke out time is reduced to 1 minute instead of 15 minutes .
S It may take up to 30 seconds to actually enter test mode after

activating the command.

Press the TEST button on the SystemVut interface anytime to
access the Test menu. Service Test mode can only be turned
ON/OFF at the unit display. Once turned ON, other entries may be
made with the display or through CCN. To turn Service Test mode
on, change the value of TEST MODE to ON. To turn service test
mode off, change the value of TEST MODE to OFF. Service Test
mode will be automatically turned off based on keypad inactivity
and the Service Mode Test Time out (TEST MODE TIMEOUT).

NOTE: Service Test mode may be password protected. Refer to
Basic Control Usage section for more information. Depending on
the unit model, factory--installed options, and field-- installed
accessories, some of the Service Test functions may not apply.

Independent Outputs

The INDEPENDENTS submenu is used to change output status
for the economizer, Humidi-- MiZer system valves, power exhaust
stages, crankcase heaters, the alarm relay, as well as perform a
compressor bump test. These independent outputs can operate
simultaneously with other Service Test modes. All outputs return to
normal operation when Service Test is turned off. The compressor
bump tests cannot be run while running cooling tests and will
automatically turn off after one minute.

Fan Test

The FA N T E S T S submenu is used to setup or test speeds for the
indoor fan. Use the IDF SPEED TEST point to control the indoor
fan speed in terms of %, and use the CONVERTED IDF RPM
point as feedback to help set the fan speed settings in terms of
RPM. The indoor fan transition type point inform the test routine
how to handle the fans while running the cooling or heating tests.
Automatic will automatically transition the fans as the cooling or
heating tests change. While the Manual transition will only run the
fans as set by the test points.

R

system operation, power exhaust fans, economizer,

10

Cooling Test

The COOL submenu is used to change output status for the
individual compressors and Humidi--MiZer system operation. The
HEAT submenu service test outputs are reset to OFF for the
cooling service test. Indoor fans and outdoor fans are controlled
normally to maintain proper unit operation when set for automatic
transition. The IDF SPEED TEST and ALL ODFSPD TEST can
be changed as needed for testing. These fans points show the
requested speed not actual speed. All normal cooling faults and
alerts are functional.

Heating Test

The HEAT submenu is used to change output status for the
individual heat stages, gas or electric. The COOL service test
outputs are reset to OFF for the heating service test. Indoor fan is
controlled normally to maintain proper unit operation when set for
automatic transition. The IDF S PEED TEST can be changed as
needed for testing and shows the requested speed not actual speed.
All normal heating faults and alerts are functional.

NOTE: When the IGC fan on command (IGC FAN REQUEST)
is active the fan may run when not expected.

Table 4 – Test Mode Unit Test Directory

Display Menu/Sub menu/Name Expanded Name Values

UNIT TESTS Unit Tests Menu

TEST MODE ServiceTestModeEnable Off/On

SERVICE TEST Service Test Menu

INDEPENDENTS INDEPENDENT TEST MENU

ECON POS TEST Economizer Position Test 0 to 100

BUMP COMP A1 TEST Compressor Bump A1 Test Off/On

RH DIS VALVE TEST Rht Dischg Valve Rly Tst Off/On

RH LIQ VALVE TEST Reheat Liq Valv Rly Test Off/On

CL LIQ VALVE TEST Cooling Liq Valv Test Off/On

CCH RELAY 1 TEST Crankcase Heater 1 test Off/On

ALARM RELAY TEST Alarm Output Relay Test Off/On

PE1 RELAY TEST Power Exhaust 1 Test Off/On

PE2 RELAY TEST Power Exhaust 2 Test Off/On

2POS/ERV RLY TEST 2Position/ERV Relay Test Off/On

FAN TE STS Indoor and Outdoor Fan tests

IDF SPEED TEST Indoor Fan Speed Test 0 to 100

CONVERTED IDF RPM Converted IDF Speed XXXX

IDF MANUAL TRANS IDF Manual Transition Yes/ No

COOL Cooling Status Menu

COOL A1 TEST Cooling W/Comp.A1 Test Off/On

CIR A LOADER TEST Cooling W/Comp.ALD Test Off/On

IDF SPEED TEST Indoor Fan Speed Test 0 to 100

ODF RELAY TEST ODF Speed Relay Test Off/On

HUMIDIMIZER TEST Humidimizer Level Test 0=Off

HEAT Heating Status Menu

HEAT 1 TEST Heating Stage 1 Test Off/On

HEAT 2 TEST Heating Stage 2 Test Off/On

IDF SPEED TEST Indoor Fan Speed Test 0 to 100

AUTOMATIC TEST Automatic Test Menu

AUTO INDP TEST AUTO INDEPENDENT TEST Ye s/ N o

AUTO COOL TEST RUN AUTO COOLING TEST Ye s/N o

AUTO HEAT TEST RUN AUTO HEATING TEST Yes /N o

AUTO SYSTEM TEST RUN AUTO SYSTEM TEST Yes/N o

1 = SUBCOOL
2=REHEAT

Automatic Test

The AUTOMATIC TEST sub m en u is used to ex ecu te all the
applicable tests to the sy stem au to m atically. Th ese in clu d e
independent components, cooling, heating, and system. Table 5
shows the steps taken during the independent, cooling, and
heating auto m atic tests. The Hold time rep resen ts the time at
which that control waits before moving on to the next step.

The AUTO SYSTEM TEST will execute the independent auto
test, then the cooling auto test, then the heating auto test. At the end
of the system auto test a prompt will ask if you want to enter
measured data and complete a service report.

Table 5 – Independent, Cooling, and Heating Automatic Tests

AUTO INDP TEST

Step Action Hold (Sec)

1 Turn on Crankcase Heater Relay 0

2 Set IDF speed to 100% 30

3 Turn on 2 position damper/ERV relay 30

4 Set Economizer Damper to 100% 60

5 Turn o n p o w e r e x h a u s t 1 10

6 Turn o n p o w e r e x h a u s t 2 10

7 SetEconomizerDamperto0% 60

8 Turn off power exhau st 2 10

9 Turn off power exhau st 1 10

10 Set IDF to the ventilation speed 30

11 Turn off 2 position damper/ERV relay 0

12 Turn on alarm relay 10

13 Turn off alarm relay 10

14 Set IDF to 0% speed 30

15 Turn off Crankcase Heater relay 0

AUTO COOL TEST

Step Action Hold (Sec)

1 Set IDF auto transition 0

2 Turn o n C o o l A1 te s t 60

3 Turn on Compressor Loader test 30

4 Turn o f f OD F R e l a y t e st 10

5 Turn off Compressor Loader test 60

6 Turn off Cool A1 test 30

7 Turn on Hot Gas Reheat Test 60

8 Switch to Subcooling Test 30

9 Turn off Subcooling Test 30

AUTO HEAT TEST

Step Action Hold (Sec)

1 Set IDF auto transition 0

2 Turn o n H e a t 1 te s t 60

3 Turn o n H e a t 2 te s t 60

4 TurnoffHeat1andHeat2tests 20

11

THIRD PARTY CONTROL

Third party controls may interface with the unit SystemVut
controller through the connections described below. See other
sections of these instructions for more information on the related
unit control and configurations.

Cooling/Heating Control

The thermostat inputs are provided on TB1 of the board. The
Unit Control Type configuration, UNIT CONTROL TYPE,
must be 0 (Tstat) to recognize the below inputs. Terminal R is
the 24--VAC source for the following:

Y1 = first stage cooling
Y2 = second stage cooling
W1 = first stage heating

W2 = second stage heating
G = Indoor fan

Dehumidification Control

For units with factory installed Humidi--MiZerRsystem option, the
humidistat input is defaulted for use on the Y3 thermostat input
screw terminal as a normally open switch. This can be changed
with the Humidistat Switch Channel configuration (HUMSTAT

CHANNEL) and the Humidistat switch type configuration
(HUMSTAT SW TYPE).

Remote Occupancy

The remote occupancy input can be provided on one of the
configurable inputs, most commonly TB3. The Remote
Occupancy Switch configuration, REMOTE OCC TYPE,
identifies the normally open or normally closed status of this input
when unoccupied. The Remote Occupancy Channel configuration,
REMOTE OCC CHAN, identifies the discrete input (DI) assigned
for this function.

Remote Shutdown

The remote shutdown input is provided for unit shutdown in response
to switch input configured most commonly on TB3. The Remote
Shutdown Swi t ch configuration, REM. SHUTDOWN TYPE,
identifies the normally open or normally closed status of this input
when there is no shutdown command. The Remote Shutdown
Channel configur ation, REM. SHUTDOWN CHAN, identifies the
discrete input (DI) assi gned for this function.

Alarm Output

The alarm output is provided on as a configurable relay, most
commonly on TB2, to indicate when a current alarm is active. The
output will be 24 --VAC if a current alarm exists. The Alarm Relay
Channel configuration, ALM RELY CHANNEL, identifies the
discrete output (DO) assigned for this function.

Economizer Damper Control

For units with the economizer option or accessory, the damper
position can be directly controlled through the IAQ sensor input.
The IAQ Analog Input configuration, IAQ LEVEL CONTROL
will have to set to 2 (CTL MINP). When IA.CF = 2, an external 4
to 20 mA source is used to move the damper 0% to 100% directly.

CONTROLS OPERATION

Display Configuration

The SETTINGSDISPLAY SETTINGS submenu is used to
configure the local display settings.

METRIC DISPLAY

This variable is used to change the display from English units to
Metric units.

LANGUAGE

This variable is used to change the language of the SystemVu
display. At this time, only English is available.

CONTRAST ADJUST

This is used to adjust the contrast of the SystemVu display.

PASSWORD ENABLE?

This variable enables or di sables the use of a user password. The
passw ord is used to rest r ict use of the control to change configurations.

VIEW USER PASSWORD

This menu allows the user to view the user password. The
password must be entered or disabled to view it.

CHANGE USER PASSWORD

This menu allows the user to change the user password. The
password must be entered or disabled to change it.

Unit Configuration

Many configurations that indicate what factory options and/or field
accessories are installed and other common operation variables are
included in SETTINGSUNIT CONFIGURATION submenu.
Some of these configurations will be set in the factory for the
factory--installed options (FIOPs). Field installed accessories and
custom control functions will require configuration changes. The
SETTINGSUNIT CONFIGURATIONGENERAL submenu
contains the following control configurations. Refer to other
specific sections for other configurations.

STARTUP DELAY

This configuration sets the control start-up delay after the power is
interrupted. This can be used to stagger the start-up of multiple
units.

UNIT CONTROL TYPE

This configuration defines if temperature control is based on
thermostat inputs or space temperature sensor input. TSTAT value
is when then unit determines cooling and heating demand by the
state of G, Y1, Y2, W1, and W2 inputs from a space thermostat.
This value is the factory default. SPACE SEN value is when the
unit determines cooling and heating demand based on the space
temperature and the appropriate set point. RAT SEN value is when
the unit determines cooling and heating demand based on the
return air temperature and the appropriate set point. SPACE SEN
or RAT SEN are also used as Linkage configuration.

THERMOSTAT TYPE

This configuration applies only if Unit Control Type is Thermostat.
The value determines how the inputs are interpreted. See the
specific operation sections for more information. The following
descriptions define what each value means.

0 = CONV 2C2H – Conventional Thermostat 2 stage cool and

2 stage heat.

1 = DIGI 2C2H – Digita l Thermos t at 2 stage cool and 2 stage heat.
2 = CONV 3C2H – Conventional Thermostat 3 stage cool and

2 stage heat. This is the default setting.

3 = DIGI 3C2H – Digital Thermostat 3 stage cool and 2 stage heat.

ADAPTIVE TSTAT

This configuration applies only if the Unit control type is
Thermostat. When this is YES the control will use Adaptive
Control for cooling and heating staging. When this is set to NO the
control will use the Traditional Thermostat Control, however
during integrated cooling Adaptive is always used.

DIRTY FILTER TIME

This configuration defines the life of the installed filter. A timer
will count down from this number while the indoor fan is running.
At the expiration of this timer, an alert will be activated to indicate
a filter change is required.

TEST MODE TIMEOUT

This configuration defines the time at which a test mode test has
not changed state will automatically disable test mode. This
configuration will disable the timeout when set to 0 (Disabled).

12

CCH MAX TEMP

This configuration defines the temperature threshold for which the
crankcase heater is no longer required to heat the compressor shell.

STD BARO PRESSURE

This conf i guration is used to speci fy the job location’s s tandard
barometer pressure reading. This will feed the BAROMETRIC
PRESS when a network is not writing to it. This should be used to
account for job site eleva t ion if enthalpy calcula t ions are being used.

LINK STAGEUP TIME

This configuration sets the cooling and heating stage up time
during linkage operation.

Configurable Switches and Analog sensors

The SystemVut controll er has optional configurable inputs. These
consist of five physica l board switch inputs (disc r ete inputs) and three
physical board analog inputs. There are more functions allowed for
configuration than ther e are inputs. Each function will have a
configuration for which input channel it is assigned to. Each switch
function will als o have a switch type configuration which defines that
switches normal stat e. Table 6 shows the configurabl e functions and
what their normal and active states are. Ta ble 7 shows the configurable
analog input functi ons. The switc h configurations can be found in the

SETTINGSUNIT CONFIGURATIONSSWITCH INPUT
CONFIGS sub--menu. The analog input configura tions can be found
in the SETTINGUNIT CONFIGURATIONSSWITCH INPUT
CONFIGS sub--menu. The configurabl e input assignment can be
viewed in the SERVICEHARDWAREASSIGNED
INPUTS/OUTPUTS sub--menu.

Table 6 – Configurable Switch Input Functions

Function Description Normal State Active State

Humidistat OFF ON

Condensate Overflow LOW HIGH

Phase Monitor NORMAL ALARM

Filter Status Switch CLEAN DIRTY

Remote Occupancy UNOCC OCCUPIED

Remote Shutdown RUN SHUTDOWN

Fan Status OFF ON

General Status Switch NORMAL ALARM

IAQ Override OFF ON

Enthalpy Switch Input LOW HIGH

Table 7 – Configurable Analog Input Functions

Function Description Sensor Type Sensor Values

Space Relative Humidity Sensor 0--- 2 0m A %RH

Outside Air Relative Humidity Sensor 0 --- 20 m A %RH

Return Air Relative Humidity Sensor 0 --- 20 m A %RH

Indoor Air CO2Sensor 0 --- 20 m A PPM

Outside Air CO2Sensor 0 --- 20m A PPM

Outdoor CFM Sensor 0 --- 2 0 m A CFM

General Operation

48/50FC and 48/50GC units can provide cooling,
dehumidification, heating, and ventilation. The operating mode
(MODE) shows the highest level of operation of the unit at any
given time. The operating sub--mode (SUB--MODE) shows the
detail operation occurring while under a specific mode. Fig. 8
shows the MODE and SUB--MODE values.

Each unit will operate under one of three basic types of control,
thermostat, space temperature sensor, or return air temperature
sensor. There are many inputs, configurations, safety factors, and
conditions that ultimately control the unit. Refer to the specific
operation sections for detail on a specific unit operation. The
control will set the demand based on these types of control and
conditions, which then drives the operating mode.

When thermostat control is enabled (UNIT CONTROL TYPE),
the unit will operate based on discrete input commands (G, Y1,
Y2, W1, and W2) and there is a one minute time delay between
modes and when re--entering a mode. The G command calls for
ventilation, the Y1 and Y2 commands call for cooling, and the W1
and W2 commands call for heating. Thermostat Control Type
(THERMOSTAT TYPE) affects how cooling operates based on
Y1 and Y2 commands and if cooling/heating stage time guards are
applied.

When space temperature sensor control in enabled (UNIT
CONTROL TYPE), the unit will try to maintain the Space
Temperature (SPACE TEMPERATURE) between the effective
cool and heat setpoints (EFF COOL SETPOINT and EFF HEAT
SETPOINT). However, to minimize unnecessary cool to heat and
heat to cool changes, there is a 10 minute delay after the last stage
turns off before the control will switch modes. Linkage operation
overrides the mode changeover delay to 15 seconds. The cooling
and heating Mode Select Time guards (COOL MODE T.GUARD
and HEAT MODE T.GUARD) show the remaining time before
allowing the respective mode to be entered.

Demand Determination

Based on the unit control type (UNIT CONTROL TYPE),alarm
conditions, and user interaction, the control will determine an
overall demand of the unit. Table 8 shows the possible system
demands with their priority level and summary description.

Thermostat Demand

When the unit control type is configured for thermostat (UNIT
CONTROL TYPE = TSTAT) the level 5 demand in Table 8 will be

determined by thermostat inputs and the Thermostat Type
configuration (THERMOSTAT TYPE) as shown in the tables
below. Table 9 shows the cooling thermostat inputs and how they
map to the system demand. Table 10 shows the heating thermostat
inputs and how they map to the system demand.

MODE OFF VENT COOL HEAT TEST

STARTING UP MODE TIMEGUARD ECON FREE COOLING HEATING MANUAL TEST

SUB-

MODE

IDLE - NO DEMAND

MODE TIMEGUARD MECH. COOLING

UNIT DISABLED ECON/MECH COOLING

URGENT SHUTDOWN DEHUMIDIFICATION

SAFETY CONTROL DEHUM/MECH COOL

SUPPLY FAN ON UNOCC. FREE COOL

DEHUM PREVENTED

COOLING PREVENTED

SHUTTING COOL OFF

OUTSIDE AIR TEMPERING

HEATING PREVENTED

SHUTTING HEAT OFF

AUTO TEST

SHUTTING TEST OFF

Fig. 8 -- Modes and Sub--Modes

13

a48--- 9374

Table 8 – Demand List and Priority

DEMAND Priority Description

EMERGENCY 1 An emergency condition occurs which requires a unit shutdown

SAFETY FAULT 2 A safety diagnostic requires the unit to run in safety mode.

SERVICE TEST 3 User request test mode

SHUTDOWN 4 A minor or user condition requires the unit to shutdown

NO DEMAND

FAN ONLY Only circulation or ventilation is requested form the building

DEHUM A dehumidification load is present in the building

LOW COOL A low cooling load is present in the building

HIGH COOL A high coolin g load is present in the building

LOW COOL & DEHUM A low cooling and dehumidification load is present in the building

HIGH COOL & DEHUM A high cooling and dehumidification load is present in the building

UFC LOW COOL A low cooling load is present in the building due to the unoccupied free cooling algorithm

UFC HIGH COOL A high cooling load is present in the building due to the unoccupied free cooling algorithm

LOW HEAT A low heating load is present in the building

HIGH HEAT A high heating load is present in the building

SUPPLY AIR TEMPERING Due to outside air, supply air is uncomfortably cool during ventilation

5

There is no comfort demand from the building

Table 9 – Thermostat Cooling System Demands

Thermostat Inputs THERMOSTAT TYPE

Y1 Y2 CONV 2C2H* CONV 3C2H DIGI 2C2H DIGI 3C2H

0 0 No C ool No Cool No Cool No Cool

0 1 Alert & Low Cool Alert & Low Cool High C o ol High Cool

1 0 Low C ool Low Cool Low Cool Low Cool

1 1 High Cool High Cool High Cool High Cool

*SettheLOW COOL COMP as needed.

Table 10 – Thermostat Heating System Demands

Thermostat Input THERMOSTAT TYPE

W1 W2

0 0 No Heat No Heat

0 1 Alert & Low Heat High Heat

1 0 Low Heat Low Heat

1 1 High Heat High Heat

CONV 2C2H
CONV 3C2H

DIGI 2C2H
DIGI 3C2H

Space Sensor Demand

When the unit control type is configured for space sensor (UNIT
CONTROL TYPE = SPACE SEN) the level 5 demand in Table 8

will be determined by the space sensor inputs and setpoints as
described below. The Effective Demand Temperature (DEMAND
CTRL TEMP) represents the temperature which the control is
using to control the space. This would come from the space sensor,
building network, linkage, or the return air sensor.

Setpoint Determination

Setpoints are used to control the unit. The Cool Setpoint in Effect

(EFF COOL SETPOINT) and the Heat Setpoint in Effect (EFF
HEAT SETPOINT) are the points in which the unit is controlling

to at a specific time. These points are read only points and change
according to occupancy, the offset slider status, and network writes.
The setpoint configurations are in the SETTINGSSPACE SET
POINTS submenu.

If the building is in occupied mode, the Occupied Cool Setpoint

(OCC COOL SETPOINT) and the Occupied Heat Setpoint (OCC
HEAT SETPOINT) are active. When the building is in
unoccupied mode, the Unoccupied Cool Setpoint (UNOCC COOL
SETPNT) and the Unoccupied Heat Setpoint (UNOCC HEAT
SETPNT) are active. The heating and cooling set points are also

separated by a Heat-- Cool Set Point Gap (HEAT-COOL SP GAP)
that is user configurable from 2 to 10 degrees F. This parameter
will not allow the setpoints to be set too close together, it will
change the last setpoint adjusted if it is set within the GAP.

When the space sensor has a setpoint slider adjustment, the cool
and heat setpoints (occupied) can be offset by sliding the bar from
one side to the other. The SPT Offset Range (+/--) (SPT SLIDER
RANGE) sets the total positive or negative degrees that can be
added to the setpoints. With the slider in the middle, no offset is
applied. Moving the slider to the “COOL” side will subtract from
each setpoint, and sliding it to the “WARM” side will add to the
setpoints. The slider offset being applied at any given time is
displayed as Space Temperature Offset (SLIDER OFFSET VAL).

Temperature Demand

Space sensor staging control is an adaptive anticipation control that
weighs the actual space demand against the trend of that demand.
The control tries to anticipate the change in the space because of its
current stage status. This anticipation is based on the demand
trends. These trends will show the control how the space is reacting
to the current running conditions and help it decide when to
change the actual demand of the system. The following points are
in the RUN STATUSMODE submenu:

COOLING DEMAND — This is the difference between the Cool
Setpoint in Effect (EFF COOL SETPOINT) and the Effective
Demand Temperature (DEMAND CTRL TEMP) representing the
demand of the space for cooling.

COOL DEMAND TREND — This is the rate of change of the
cooling demand in degrees per minute, representing how the space
is changing its demand for cooling.

HEATING DEMAND — This is the difference between the Heat
Setpoint in Effect (EFF HEAT SETPOINT) and the Effective
Demand Temperature (DEMAND CTRL TEMP) representing the
demand of the space for cooling.

HEAT DEMAND TREND — This is the rate of change of the
heating demand in degrees per minute, representing how the space
is changing its demand for cooling.

In general the system demand will increase based on the demand
compared to the demand switch states in Fig. 9. The demand
cannot increase until Time guard 1 (DEMAND TIMEGUARD1)
expires. The LCON and LHON thresholds will also cause the

14

system demand to be reduced. When the demand hits the off switch
stages the system demand will be set to NO DEMAND. These
switch stages are in the SETTINGSSET POINTSTEMP
DEMAND CONFIG submenu.

The cooling and heating demand level up configurations (COOL
DMD LEVEL UP and HEAT DMD LEVEL UP) will restrict a
system demand increase if the demand trend is less than the level
up configuration. These level up configurations will also increase
the system demand if the demand trend is greater than it for greater
than the Time guard 2 (DEMAND TIMEGUARD2).

The system demand will increase if it has remained at the same
state for greater than Time Guard 3 (DEMAND TIMEGUARD3).

HCON

Decrease

LCON

Cool Setpoint

Heat Setpoint

LHON

HHON

Demand

LCOF

LHOF

Decrease

Demand

SPACE TEMP

a48--- 10313

Fig. 9 -- Space Sensor System Demand Switch States

RA T Demand

When the unit control type is configured for return air sensor
(UNIT CONTROL TYPE = RAT SEN) the level 5 demand in
Table 8 will be determined the same as space sensor but using the
return air temperature (RETURN AIR TEMP) instead of the space
temperature (SPACE TEMPERATURE).

Humidity Demand

When the unit is configured for either a Humidistat input

(HUMSTAT CHANNEL) or Space Humidity Sensor (SPRH
SENS CHANNEL) the level 5 demand in Table 8 will include a

determination of dehumidification demand.

Humidistat

When receiving an active input from the Humidistat
(HUMIDISTAT), dehumidification will be demanded.

Space Relative Humidity

On units with a relative humidity sensor, when the received value
of space relative humidity (SPRH LEVEL) has exceed the
humidity set point (SPRH SET POINT), dehumidification will be
demanded. This demand will remain until the space relative
humidity has fallen below the humidity set point by more than the
humidity set point deadband (SPRH DEADBAND). This would
come from the space humidity sensor, or building network.

Occupancy Determination

The building’s occupancy is affected by a number of different
factors. Occupancy affects the unit set points and the operation of
the economizer. The factors affecting occupancy are listed below
from highest to lowest priority.

Level 1 Priority

Level 1 classification is a force/write to occupancy and can occur
two ways. Listed in order of priority: force on OCCUPIED, and a
Linkage write. The CCN point OCCUPIED is forced via an
external device such as a ComfortIDt controller or a service tool:

when OCCUPIED is forced to YES, the unit is considered
occupied, when OCCUPIED is forced to NO, the unit is
considered unoccupied. If the unit is being controlled by Linkage,
the occupancy is communicated and mapped to OCCUPIED as an
input. Linkage does not force the point only write to it, therefore a
force applied to OCCUPIED will override it.

If OCCUPIED is not being forced or written to, proceed to the
level 2 priority.

Level 2 Priority

Level 2 is considered occupant interaction, and consists of Timed
Override and Remote Occupancy Switch. A timed override button
press will override a remote occupancy switch if both are installed
for operation.

While using the programmed schedule, occupancy can be
temporarily switched from unoccupied to occupied by pressing the
override button for approximately 3 seconds on the T--55, T--56, or
T--59 space temperature sensor. The length of the override period
when pressing the override button is determined by the Override
Time Limit (TIMED OVR LENGTH). The hours remaining in
override is displayed as Timed Override Hours (TIMED OVR
HOURS). This point can also be changed from the local display or
network to set or change the override period length.

Remote Occupancy Switch (REMOTE OCC SWITCH) can be
forced or configured for operation based on an actual switch. The
physical switch should be configured to either Normally Open or
Normally Closed when the user would like to control the
occupancy with an external switch. This switch is field--supplied
(24v, single pole, single throw [SPST]). There are two possible
configurations for the remote occupancy switch:

1. (REMOTE OCC TYPE = 0) Normally Open Switch

2. (REMOTE OCC TYPE = 1) Normally Closed Switch

If the switch is configured to No Switch (REMOTE OCC CHAN =
None), the swit ch input value will be ignored and s oftware will
proceed to level 3 priority. For each type of switch, the appropriate
configuration and states are listed in the table below.

TYPE OF SWITCH

Occupied when

Closed or Unoccupied

when Open

Occupied when Open

or Unoccupied when

Closed

SWITCH

CONFIGURATION

Normal Open ( 0)

Normal Closed ( 1)

STATE OF SWITCH

AND STATE OF

OCCUP A NCY

Open and Unoccupied

Closed and Occupied

Open and Occupied

Closed and

Unoccupied

Level 3 Priority

The following occupancy options are determined by the state of
Occupancy Schedule Number (SCHEDULE NUMBER) and the
Global Schedule Broadcast (BROADCAST SCHEDL?).

1. (SCHEDULE NUMBER = 0) The unit is always
considered occupied and the programmed schedule is
ignored. This is the factory default.

2. (SCHEDULE NUMBER = 1 - 64) Follow the local
programmed schedule. Schedules 1 to 64 are local within
the controller. The unit can only store one local schedule
and therefore changing this number only changes the title of
the schedule table.

3. (SCHEDULE NUMBER = 65- 99) Follow the global
programmed schedule. If the unit is configured as a Global
Schedule Broadcaster (BROADCAST SCHEDL? = YES),
the unit will follow the
broadcast the schedule so that other devices programmed to
follow this schedule number can receive the schedule. If the
unit is not programmed as a Global Schedule Broadcaster
(BROADCAST SCHEDL? = NO), the unit will receive
broadcasted schedules from a unit programmed to broadcast
this schedule number.

unit s programmed schedule and

15

Indoor Fan Operation

These units use the Staged Air V olume (SAV) method of controlling
the supply fan for a typical constant volume rooftop unit. This control
method employs an Electronic Commutated Motor (ECM) to
operate the supply fan at different speeds in order to achieve energy
savings through reduced fan power. This method is specif ically not
concerned with controlling static pressure in the supply duct, but rather
with setting different fan speeds for different operating condit i ons,
such as ventilation mode or part-- load mechanical cooling.

The SAV function is NOT a Variable Air Volume (VAV) function.
The fan adapts its speed to one of eight based on mode and current
state to satisfy a demand. The eight speeds consist of off (0%) and
seven configurable values. The seven configurable fan speeds are:
Maximum Speed (MAXIMUM IDF SPEED), Ventilation (VENT

IDF SPEED), Heating (HEATING IDF SPD), Free Cool (FREE
COOL IDF SPD), Mechanical Low Cooling (LOW COOL IDF
SPD), Mechanical Medium Cooling (MED COOL IDF SPD),and

Mechanical High Cooling (HIGH COOL IDF SPD),TheECMis
powered direct from the distribution block and is always on with
power applied unless the CB is tripped. When the thermostat or
space sensor control conditions require the fan on, the ECM will
then be ramped to desired speed. Fan speed is always calculated by
evaluating the current applicable conditions. Each fan speed
condition is evaluated independently, and the highest fan speed is
used. For example, if a cooling call occurs during V entilation
mode, the unit mode will transition to cooling but the fan speed is
set to the higher of the two (VENT IDF SPEED or LOW COOL
IDF SPD). Refer to the speed configurations below for when the
fan will run at them.

The Commanded Fan Speed (OUTPUTSGENERAL
OUTPUTSCOMMANDED IDF RPM) represents the controls
commanded speed for the fan at any given time. This commanded
speed is dete rmined by the unit’s current HV AC mode and the unit
control type. For gas hea ting units, the IGC f an request output
(InputsGEN. II G C.F) is monitored by the control. This can result
in additional modificat ion of fan del ays or other operation due to
safety funct i ons of the IGC control. See the Gas Heating operat i on
section for more details. If configure d for IAQ fan operation, the fan
may be turned on to satisfy air quality demands. See the Indoor Air
Quality section if using IAQ (indoor air quality) accessory sensors.
The fan can run under thermostat or spac e sensor control and will
rema i n on if compressors or heat relays are ever stuck on. If Shut
Down on IDF Failure is enabled (SHUTDOWN IDF FAIL = Ye s ) ,
the fa n a nd unit will be shutdown without delay on fan a larm
conditions. Fan off delays are honored when exiting specific HV AC
modes. The Fan--off Dela y delays are as follows: Cooling (COOL
F ANOFF DELAY), and Heating (HEAT FANOFF DELAY).

Indoor (Supply) Fan Maximum Speed
(MAXIMUM IDF SPEED)

Max speed is the highest fan speed allowed. This is typically set to
deliver design CFM to the space per job requirement. Most safety
conditions for the unit will override the fan speed to this to help
protect the unit.

IMPORTANT: MAXIMUM IDF SPEED is used in the minimum
position curves and therefor important to set properly.

Ventilation Indoor Fan Speed (VENT IDF SPEED)

This configuration defines the fan speed used in Ventilation
(fan--only) mode. Ventilation mode is when the supply fan is
running, but there is no demand for heating or cooling. In
thermostat mode, this is with just a G call. In space sensor control,
this is when the unit is Occupied mode and the indoor fan is
configured to always run while occupied (OCCUPIED FAN?).If
the indoor fan is configured for intermittent fan (OCCUPIED
FAN? = No ) , the Mode will be off instead of Ve ntilation and the
fan will not run unless a heating or cooling mode is needed. During
the unoccupied period, the fan will always operate intermittently.

The economizer damper will adjust its position based on how far
away this speed is from max speed for ventilation.

IMPORTANT: It is important that the ventilation rate is checked after
setting this speed to verify that the unit can properly ventilate the space
per requirements . Adj usting this conf i guration or the economizer
minimum setting curve should be performed to meet job require m ents.

Heating Indoor Fan Speed (HEATING IDF SPD)

This configuration defines the fan speed used when in heating
mode and running heat. On units equipped with Gas heat (UNIT
TYPE OF HEAT), this heat speed will be delayed on based on the
IGC’s fan on call (IGC FAN REQUEST). Once the IGC request
the fan the fan will run what this heating speed configuration is set
for until heating is ended. On units configured for Electric heat
(UNIT TYPE OF HEAT) and configured for Preheat without the
fan (PREHEAT W/O IDF), this heat speed will be delayed on
based on the Preheat fan delay time (PREHEAT FAN DELAY).
Once this preheat time has expired or not configured for preheat,
the fan will run at this heat speed while heat is on.

Free Co oling Indoor Fan Speed (FREE COOL IDF SPD)

This configuration defines the initial fan speed used when in Free
Cooling. Refer to the Economizer Controls Operation section for
details on free cooling. The fan will stay at this configured speed
whenever only the damper is being used for free cooling. If the
damper is at 100% for 5 minutes the fan will ramp to the high
cooling speed. It is locked there until the actual damper position
falls below 75% at which time it will ramp back down to this
configured speed.

Low Cooling Indoor Fan Speed (LOW COOL IDF SPD)

This configuration defines the fan speed used when the first stage
of mechanical cooling is being performed.

High Cooling Indoor Fan Speed (HIGH COOL IDF SPD)

This configuration defines the fan speed used when all (full load)
stages of mechanical cooling is being performed. When performing
integrated cooling with the economizer this speed will be used. When
only free cooling with a high cool demand, this spee d will be used.

Cooling Operation

The unit’s cooling operation consists of: demand and mode
determination, staging request to satisfy the demand, and handling
a request with the unit’s resources. These resources can include
compressors, Humidi--MiZer
speed based on options. This section covers mechanical cooling.
For economizer free cooling, refer to the Economizer Operation
section (starting on page 22).

For Humidi--MiZer system operation, refer to the Optional
Humidi--MiZer Dehumidification System section (see page 17).

Cooling Mode Control

The cooling HVAC mode (OPERATING MODE) has 9 different
operating sub modes (SUBMODE): ECON FREE COOLING,
UNOCC. FREE COOL, MECH. COOLING, ECON/MECH
COOLING, DEHUMIDI FICATION, DEHUM/MECH COOLING,
DEHUM PREVENTED, COOLING PREVENTED, a nd
SHUTTING COOL OFF . These are all part of a general cooling
mode and rese mble the specific type of cool ing that is being
performed at any given time. All types of cooling are still performed
under the general cooling function, and the expande d text is for user
reference only.

For the unit to enter cooling mode, three things must be true: the
indoor fan must be ok to use, the mode changeover time guard must
be expired, and there must be a cooling or dehumidifi cation demand
(Y1, Y2, space cool demand, or humidity demand). The unit will
rema in in cooling for at least one minute or until any of the above
conditions turn false. The cooling mode does not off i cially end until
the compress or is off and the fan off delay has expired.

R

system, an economizer, and fan

16

Cooling Staging Control

Once the unit is in a cooling mode, determine what the demand is
and how to satisfy it. If an economizer is installed and can be used
for cooling (OK TO USE FREE COOLING? = Yes), the unit will
use it first (see economizer section for its operation). If the
economizer cannot be used or additional cooling is needed, a
mechanical cooling check is performed. OK to use Compressors?
(OK TO USE COMPS?) will be set to yes when the outdoor
temperature (OUTDOOR AIR TEMP) is above the Circuit A
Lockout temperature (CIR.A LOCKOUT OAT) and the Circuit A
is not locked out for diagnostic reasons (CIRCUIT A LOCKOUT).
Based on the unit control configuration, requested cooling stages
(REQ. COOL STAGES) will be determined then passed to
compressor control to actually add the cooling stages.

There are two ways of requesting stages when thermostat control is
enabled, Traditional thermostat control or adaptive control.
Traditional thermostat control is used if set for non--adaptive
thermostat (ADAPTIVE TSTAT = NO) and the unit cannot use the
economizer for free cooling. If set for adaptive thermostat
(ADAPTIVE TSTAT = YES) or any time the economizer is
available for free cooling, the unit will use adaptive control for
staging.

When configured for Space sensor or RAT control (UNIT
CONTOL TYPE) the unit will use adaptive control for staging.
With either staging method there are two supply air temperature
limits that apply, one restricts more cooling stages and the other
will remove cooling stages. If at any time the Supply-- Air
Temperature (SUPPLY AIR TEMP) falls below the Minimum
Supply Air Temperature Upper Level (UPPER MIN SAT),the
requested stages will not be allowed to increase. If at any time the
SAT falls below the Minimum Supply Air Temperature Lower
Level (LOWER MIN SAT), the requested stages will be reduced
by one. If these SAT limits are configured so that they are too close
together, the last stage might cycle rapidly, slowed only by its
minimum on and off--time requirements.

Adaptive Control

Stage timers and Supply air trend apply when determining the
request for stages. The first request (REQ. COOL STAGES =1)
comes immediately when starting the staging process. The Cool
Stage Increase Time (COOL STAGEUP TIME) has to expire and
the Supply--Air Trend (SUPPLY AIR TREND) has to be above
the cooling supply air trend level (COOL SATTREND LEV)
before another stage can be added. Requested stages will only be
allowed to increase as the actual system demand allows
(DEMAND). A “LOW COOL” demand will only allow one
requested stage, and “HIGH COOL” all stages. The requested
stages will be reduced if the cooling demand is lowered or dropped
completely, or if the supply air falls below the lower level
(LOWER MIN SAT).

Traditional Thermostat Control

Stage timers and Supply air trend do not apply when determini ng the
request for stage s. Request staging will follow the ther mostat inputs
directly. “LOW COOL” will request one stage.“HIGH COOL” will
request two stages.

Compressor Control

The compres sor control works hand and hand with the staging
control. As the stagi ng control request stages , the compressor control
determines what is available or running and tries to provide stages for
what is requested. The availability of the compressors depends on
time guards, circ uit diagnost ics, and outdoor temperat ure.

There are time guards to protect the compressor, Compressor Min
On Time (COMP MIN ON TIME) and Compressor Min Off Time
(COMP MIN OFF TIME) apply before the compressor can be
turned back on or turned off. Timeguard A1 (COMP A1

TIMEGUARD) and Timeguard loader (COMP LDR
TIMEGUARD) display the time the compressor and loader have

before available for use.

Circui t diagnostic tests are perform ed during operation which may or
may not allow the compressor to be used. The availability of the
compre ssor is shown as Compressor A1 A vailable (COMP A1
A VAILABLE). The loc kout sta tus of the compressor is shown as
Compres s or A1 Lockout (COMP A1 LOCKOUT). The actua l stages
running at any given time is displayed as Actual Cooling St a ges
(ACTIVE COOL STAGE). Individual c om pressor output state is
shown as (COMPRESSOR A1) and (COMP A LOADER).

Any time the outdoor ambient fall s below the low cooling minimum
outdoor te mperature (LOW COOL MIN OA T) , the low cooling
lockout will be active (LOW COOL LOCKOUT) preventing
compre ssor A1 from running by itself. This means the loader will be
on with the compressor .

Outdoor Fan Control

The outdoor fan can be set for a single speed or 2 speed motor. The
3 to 5 ton 48/50FC units will have a single speed ODF. The 3 to 5
ton 48/50GC and the 6 ton 48/50FC will have a 2 speed ODF. The
ODF Relay Enabled (ODF RELAY ENABLE) point will tell the
control when a 2 speed motor is installed. The 2 speed relay state
output is shown as Outdoor Fan Speed Relay (ODF SPEED
RELAY). Units with a low ambient option or Humidi--MiZer
option will also be equipped with a head pressure control device.

Normal Operation

On the single speed ODF system, the ODF will come on and off with
the compressor. On the 2 speed ODF systems, the ODF will come on
and off with the compre ssor at low speed. The High speed ODF will
be acti ve when the compressor loader is on, and done by energiz ing
the ODF SPEED RELAY.

Low Ambient Operation

When equipped with the head pressure device and the OAT is
below approximately 40_F, the ODF speed will vary based on the
condensing temperature. Regardless of active low or high speed the
head pressure device will modulate the ODF speed to maintain
approximately 95_F temperature at the coil sensor location. In low
speed operation however the head pressure device cannot use high
speed if needed until the control turns on the ODF SPEED
RELAY.

Humidi--MiZer

When equipped with the head pressure device and reheat is active, the
ODF speed will vary based on the condensing temperat ure. Regardles s
of acti ve low or high spee d the head pressure device will modulate the
ODF speed to maintain approximately 95_F temperature at the coil
sensor location. In low speed operation however the head pres sure
device cannot use high speed if needed until the control turns on the
ODF SPEED RELAY.

R

Operation

Optional Humidi--MiZer Dehumidification System

Units with the factory--installed Humidi--MiZer system option are
capable of providing multiple modes of improved
dehumidification as a variation of the normal cooling cycle. The
Humidi--MiZer system option includes additional valves in the
liquid line and discharge line of the refrigerant circuit and a reheat
coil downstream of the evaporator. The Humidi--MiZer sys t em
equipped configuration is factory set to Y es for Humidi--MiZer system
equipped units (REHEAT EQUIPPED = YES). This enables
Humidi--MiZer system operating modes and service test.

Humidi--MiZer system operation requires the install ation and
configuration of a relative humidity switch input or a space relat ive
humidity sensor. These provide the dehumidification demand to the
control.

Dehumidification Demand

When using a humidistat or switch input, the demand for
dehumidification is seen as Space Humidity Switch
(INPUTSSWITCH INPUTSHUMIDIST AT) being Off or On.
An Off value means humidity level is good and an On value means
that dehumidification is needed.

R

17

When using an SPRH sensor, the demand is based on the Space
Humidity Sensor (INPUTSANALOG INPUTSLEVEL) value
compared to the Space RH Setpoint (SETTINGSSPACE
SETPOINTSOCC SPRH SETPOINT or UNOCC SPRH SP).If
the Space Humidity Sensor (SPRH) value is above the Space RH
Setpoint , then dehumidification is needed. I f the Space Humi di ty
Sensor (SPRH) value is below the Space RH Set point minus the
Space RH Deadband (SETTINGSCOOLINGSPRH
DEADBAND), then dehumidif ication is no longer needed.

NOTE: When there is a dehumidification demand, the economizer
damper position is limited to its minimum damper position.

Humidi--MiZerRSystem Modes

With Humidi--MiZer system units there are two additional HVAC
modes available for the user: Dehumidification and Dehum/Mech
Cooling. Selection of the Dehum/Mech Cooling mode is
determined by the dehumidification demand and the cooling
demand. Table 11 shows the corresponding circuit mode and
output status for the different demand combinations.

Normal Cooling

This mode is the standard rated cooling system performance, and
occurs when there is cooling demand without dehumidification
demand.

For 48/50FC 04--06 units, refrigerant flows through the outdoor
condenser and is diverted away from the reheat coil with the open
Cooling Liquid Valve (CLV) into the expansion device. Figure 10
shows the complete refrigerant flow.

For 48/50GC 04--06 and 48/50FC 07 units, refrigerant flows
through the outdoor condenser and is diverted away from the
reheat coil with the closed Reheat Liquid Valve (RLV) and open
Cooling Liquid Valve (CLV) into the expansion device. Figure 11
shows the complete refrigerant flow.

Dehum/Mech Cooling (Subcooling) Mode

This mode increases the latent heat removal and decreases sensible
cooling compared to normal cooling. This occurs when there is a
cooling and dehumidification demands.

For 48/50FC 04--06 units, refrigerant flows through the outdoor
condenser and is diverted through the reheat coil with the closed

Cooling Liquid Valve (CLV) into the expansion device. Figure 12
shows the complete refrigerant flow.

For 48/50GC 04--06 and 48/50FC 07 units, refrigerant flows
through the outdoor condenser and is diverted through the reheat
coil with the open Reheat Liquid Valve (RLV) and closed Cooling
Liquid Valve (CLV) into the expansion device. Figure 13 shows
the complete refrigerant flow.

Dehumidification (Hot Gas Reheat) Mode

This mode provides maximum latent cooling with little to no
sensible capacity. This occurs when there is a dehumidification
demand and no cooling demand.

For 48/50FC 04--06 units, refrigerant flows through the outdoor
condenser and mixes with hot gas bypassing the condenser, then
diverted through the reheat coil with the closed Cooling Liquid
Valve (CLV) into the expansion device. Figure 14 shows the
complete refrigerant flow.

For 48/50GC 04--06 and 48/50FC 07 units, refrigerant flows
through the outdoor condenser and mixes with hot gas bypassing
the condenser, then diverted through the reheat coil with the open
Reheat Liquid Valve (RLV) and closed Cooling Liquid Valve
(CLV) into the expansion device. Figure 15 shows the complete
refrigerant flow.

Reheat Control

When there is only a cooling demand, the unit will operate in
normal cooling mode. When there is only dehumidification
demand, the unit will operate in Dehumidification mode (Hot Gas
Reheat). When there is both cooling demand and dehumidification
demand, the unit will operate in Dehum/Mech Cooling mode
(Subcooling). During Dehumidification and Dehum/Mech cooling
mode, the unit will run all cooling stages. The unit can be restricted
from reheat operation by the outside temperature HUMZ

LOCKOUT OAT (SETTINGSUNIT CONFIGURATIONS
COOLINGDEHUMIDIFICATIONREHEAT OAT LIMIT)

sets the lowest outside temperature the unit is allowed to run reheat
control (Default = 40_F).

T abl e 11 – Humidi--MiZer System Control Modes -- Sizes 04--07

DEMAND AND MODE OUTPUTS

Dehumidification

Demand

No Power No Power No power Off

No No Off Off

No Yes COOL On

Ye s Yes

Yse No DEHUM On

Cooling Demand Mode Compressor RDV CLV

DEHUM/MECH

COOL

On

De---en er gized

(no flow)

De---en er gized

(no flow)

De---en er gized

(no flow)

De---en er gized

(no flow)

Energized

(flow)

D e --- e n e r gi z e d

(flow)

D e --- e n e r gi z e d

(flow)

D e --- e n e r gi z e d

(flow)

Energized

(no flow)

Energized

(no flow)

RLV

(48/50FC 07 and

48/50GC 04-- -06 only)

De---energized

(flow)

Energized

(no flow)

Energized

(no flow)

De---energized

(flow)

De---energized

(flow)

18

RDV

VALVE

INDOOR LEAVING

AIR

REHEAT MODE

METERING

DEVICE (TXV)

CONDENSER COIL

OUTDOOR AIR

VALVE

COMPRESSOR

= CLOSED VALVE

= OPEN VALVE

HUMIDI-MIZER COIL

CLV

EVAPORATOR COIL

INDOOR ENTERING

AIR

Fig. 10 -- Normal Cooling Mode – Humidi--MiZer System with Single Stage Cooling, 48/50FC 04--06

RDV

VALVE

COMPRESSOR

CONDENSER COIL

OUTDOOR AIR

RLV

VALVE

CLV

VALVE

INDOOR SUPPLY

AIR

HUMIDI-MIZER COIL

EXPANSION

VALVE

(TXV)

a48--- 9191

EVAPORATOR COIL

= CLOSED VALVE

= OPEN VALVE

INDOOR RETURN

AIR

Fig. 11 -- Normal Cooling Mode – Humidi--MiZer System with 2 Stage Cooling, 48/50GC 04--06 and 48/50FC 07

RDV

VALVE

CONDENSER COIL

OUTDOOR AIR

CLV

VALVE

COMPRESSOR

= CLOSED VA LVE

= OPEN VALVE

INDOOR LEAVING

AIR

HUMIDI-MIZER COIL

EVAPORATOR COIL

INDOOR ENTERING

AIR

REHEAT MODE

METERING

DEVICE (TXV)

a48--- 10188

Subcooling Mode (Reheat 1) − Humidi−MiZer System with Single Stage Cooling

Fig. 12 -- Subcooling Mode – Humidi--MiZer System with Single Stage Cooling, 48/50FC 04--06

19

a48--- 9192

RDV

VALVE

INDOOR SUPPLY

AIR

HUMIDI-MIZER COIL

EXPANSION

EVAPORATOR COIL

INDOOR RETURN

AIR

VALVE

(TXV)

COMPRESSOR

= CLOSED VALVE

= OPEN VALVE

CONDENSER COIL

OUTDOOR AIR

RLV

VALVE

CLV

VALVE

Fig. 13 -- Subcooling Mode – Humidi--MiZer System with 2 Stage Cooling, 48/50GC 04--06 and 48/50FC 07

RDV

VALVE

CONDENSER COIL

INDOOR LEAVING

AIR

REHEAT MODE

METERING

DEVICE (TXV)

HUMIDI-MIZER COIL

a48--- 10189

OUTDOOR AIR

COMPRESSOR

= CLOSED VALVE

= OPEN VALVE

CLV

VALVE

EVAPORATOR COIL

INDOOR ENTERING

AIR

Fig. 14 -- Hot Gas Reheat Mode – Humidi-- MiZer System with Single Stage Cooling, 48/50FC 04--06

RDV

VALVE

COMPRESSOR

CONDENSER COIL

OUTDOOR AIR

RLV

VALVE

CLV

VALVE

INDOOR SUPPLY

AIR

HUMIDI-MIZER COIL

EXPANSION

VALVE

(TXV)

a48--- 9193

EVAPORATOR COIL

= CLOSED VALVE

= OPEN VALVE

INDOOR RETURN

AIR

Fig. 15 -- Hot Gas Reheat Mode – Humidi-- MiZer System with 2 Stage Cooling, 48/50GC 04--06 and 48/50FC 07

20

a48--- 10190

Reheat Mode Diagnostic Help

The status of reheat mode sensor inputs may be viewed within the
display INPUTS menu. The status of reheat mode outputs may be
viewed within the display OUTPUTS or RUN STATUSMODE
menu. Additional diagnostic help, including status of circuit reheat
temperature limit lockouts may be viewed within the
Humidi--MiZer sub--menu of the cooling mode diagnostic table at
RUN S TATUSCOOLDEHUMIDIFICATION.TheService
Test mode may be used to force the system to operate
Dehumidification mode (Hot Gas Reheat) and Dehum/Mech
Cooling mode (Subcooling), or to independently operate the reheat
valve control outputs.

The following forced operating states are available service test
operations for a Humidi-- MiZer system equipped unit:

SERVICE TEST  COOL TEST  HUMIDIMIZER TEST

A value of “0” sets reheat control test to “Off.”

SERVICE TEST  COOL TEST  HUMIDIMIZER TEST

A value of “1=SUBCOOL” sets Humidi--MiZer control test to
“Dehum/ M ech Cooling mode (Subcooling) .”

SERVICE TEST  COOL TEST  HUMIDIMIZER TEST

A value of “2=REHEAT” sets Humidi--MiZer tes t to
“Dehumidification mode (Hot Gas Reheat).”

SERVICE TEST  INDEPENDENTS  RH LIQ VALVE TEST

A value of “On” will turn on the Reheat Liquid V alve (RLV) .

SERVICE TEST  INDEPENDENTS  RH DIS VALVE TEST

A value of “On” will turn on the Reheat Discharge Valve (RDV).

SERVICE TEST  INDEPENDENTS  CL LIQ VALVE TEST

A value of “On” will turn on the Cooling Liquid Valve (RDV).

Indoor Fan Based Dehumidification

Units that are not factory configured for Humidi--Mizer operation
can be set for improved dehumidification operation through fan



based humidification (FBD), SETTINGS



CONFIGURATIONS



FBD CONTROL TYPE. Units are factory defaulted to FBD

CONTROL TYPE = 0 which means that any dehum demand is

ignored. There are two fan based dehumidification options, Max
Comfort (FBD CONTROL TYPE = 1)andMax
Dehumidification (FBD CONTROL TYPE = 2). Fan based
dehumidification requires the installation and configuration of
either a space relative humidity sensor or a relative humidity switch
input.

COOLINGFAN BASED DEHUM

UNIT

Max Dehum

When the FBD Type is set to (2) Max Dehum, the control will try to
satisfy the dehumidification demand. When the unit receives a dehum
demand a PID control algori thm will modulate the indoor fan while
the compressor is running to mainta in minimum suction tempe rature
(FBDH_SST). The cooling stages will be contr olled as normal
cooling demand requests, only the IDF will change for
dehumidification demand.

Max Comfort

When the FBD Type is set to (1) Max Comfort, the control will try
to satisfy the dehumidification demand and minimize cold air
dump. When the unit receives a dehum demand a PID control
algorithm will modulate the indoor fan while the compressor is
running to maintain the minimum FBD supply air comfort set
point (FBDH_SAT) while also maintaining the minimum suction
temperature (FBDH_SST). The cooling stages will be controlled as
normal cool ing demand requests, only the IDF will change for
dehumidification demand.

Heating Operation

The unit’s heating operation consists of: demand and mode
determination, staging request to satisfy the demand, and handling
a request with the unit’s resources. These resources can be gas heat
or electric heat. This section covers both gas heat units and electric
heat units. The Type of Heat Installed (UNIT TYPE OF HEAT)

configuration will be factory set to 1 for gas units and 0 for electric
heat units. The unit enters a heating mode based on a demand,
decides how to satisfy the demand, executes its plan, and then
leaves the heating mode.

Heating Mode Control

The heating HVAC mode (OPERATING MODE) has 3 different
operating sub modes (SUBMODE): HEATING, HEATING
PREVENTED, and SHUTTING HEAT OFF. These are all part of
a general heating mode and resemble the action heat mode is taking
at any given time. All types of heating are still performed under the
general heating function, and the expanded text is for user
reference only.

For the unit to be allowed to enter the heat mode, three things must be
true: the indoor fan must be ok t o use, the mode change over time
guard must be expired, and there must be a heating demand. The unit
will remain in heating for at least one minute and until the demand is
dropped or if any of the above conditions are false. The heating mode
does not officially end until all heat stages are off, the fan off delay has
expired, and the IGC fan request is dropped.

Supply--Air Temperature Sensor (SA T) Heat Mode

The SAT Heat Mode Sensing (SAT DURING HEAT?) informs the
unit that the supply air sensor is valid during heating in its current
location. This configuration affects the Supply Air T emperat ure
(SUPPLY AIR TEMP) value displayed as listed below.

When SAT DURING HEAT? is disabled, the Supply Air
Temperature (SUPPLY AIR TEMP) value on the SystemVut
display and the network will hold a zero when heat outputs come
ON and for 5 minutes after.

When SAT DURING HEAT? is enabled, the Supply Air Te mperature
(SUPPLY AIR TEMP) sensor reading is displayed at the SystemVu
controller and network during heating mode.

Heating Staging Control

Once the unit is in a heating mode, it determines what the demand
is and how to satisfy it. Requested Heating Stages (REQ. HEAT
STAGES) will be determined then passed to heat control to
actually add the heating stages. To request stages the number of
heat stages (HEATING STAGE QTY) must be greater than zero.
As a gas unit this will be set in the factory, however 50GC units
may have heat installed as accessories. If the Outdoor Air
Temperature (OUTDOOR AIR TEMP) is greater than the Heating
Lockout Temp (HEAT LOCKOUT OAT), all the heat stages will
be locked out (HEAT LOCKOUT).

There are two ways of requesting stages when thermostat control is
enabled, traditional thermostat control or adaptive control.
Traditional thermostat control is used if set for non--adaptive
thermostat (ADAPTIVE TSTAT = NO). If set for adaptive thermostat
(ADAPTIVE TSTAT = YES), the unit will use adaptive control for
staging. When configured for space sensor or RAT control (UNIT
CONTOL TYPE) the unit will use adaptive control for staging.
With either staging method there are then two supply air
temperature limits, the Maximum SAT Lower Level (LOWER
MAX SAT) the Maximum SAT Upper Level (UPPER MAX SAT).
Any time the supply air temperature rises above lower level the
heat staging will be limited to what is currently on and no
additional stages will be added until the supply air temperature falls
back below the lower level. If the supply air temperature rises
above the upper level, then heating will be reduced by removing
one stage. That stage will not be added again until the Supply Air
Temperature falls below the lower level. If the supply air
temperature stays above the upper level, then another stage will be
removed. If the upper and lower levels are configured so that they
are close together, the last stage of heat might cycle rapidly, slowed
only by its minimum on and off--time requirements.

Adaptive Control

Stage timers and Supply air trend apply when determining the
request for stages. The first request (REQ. HEAT STAGES =1)
comes immediately when starting the staging process. The Heat

21

Stage Increase Time (HEAT STAGEUP TIME) has to expire and
the Supply--Air Trend (SUPPLY AIR TREND) has to be above
the Heating supply air trend level (HEAT SATTREND LEV)
before another stage can be added. Requested stages will only be
allowed to increase as the actual system demand allows
(DEMAND). A “LOW HEAT” will only allow one requested stage
and “HIGH HEAT” 2 stages. The requested stages will be reduced
if the heating demand is lowered or dropped completely, or if the
supply air falls below the lower level (LOWER MIN SAT).

Traditional Thermostat Control

Stage timers and Supply air trend do not apply when determining
the request for stages. Request staging will follow the thermostat
inputs directly. “LOW HEAT” will request one stage. “HIGH
HEAT” will request 2 stages.

Heat Relay Control

The heat relay control is responsible for energizing or de--energizing
the heat s tage r elays and works hand a nd hand with the sta gi ng
control. As the staging control requests stage s, the heat relay control
determines what actual heat relays are available or energized and tries
to provide stages for what is requested. The availability of heat relays
depends on the heat instal led, how many stages, and time guards. The
Number of Heat Stages (HEA TI NG STAGE QTY) configuration tells
the control how many heat relays can be used. Heat Stage 1Timeguar d

(HEAT 1 TIMEGUARD) and Heat Stage 2 Timeguard (HEAT 2
TIMEGUARD) display the time a respective heat relay has before it

can change state. The available stages at any given time are displaye d
as heat 1 availabl e and heat 2 avai lable (HEAT 1 AVAILABLE and
HEAT 2 AVAILABLE). The actual heat relays on at any given time
are displayed as Actual Heating Stages (ACTVE HEAT STAGE).
Heat Stage 1 Relay (HEA T 1 RELA Y) and Heat Stage 2 Relay
(HEA T 2 RELAY) are displayed on when the respective relay is
energized. There are time guards to prote ct from short cycling, Heat
Minimum On Time (HEAT MIN ON) and Heat Minimum Off Time
(HEAT MIN OFF) apply before a heat relay can be turned back on
or turned off.

Integrated Gas Controller (IGC)

The heat staging is determined as described above and the Integrated
Gas Controller (IGC) initiates the gas heat module start--up. The
Integrated Gas Controller (IGC) minimum on--time of 1 minute will
be followed even if Heat Minimum On Time (HEAT MIN ON) is
lower and during Service Test. If the IGC temperature limit switch
opens within 10 minutes of the end of the gas heat cycle, the next fan
off delay will be extended by 15 seconds. The maximum delay is 3
minutes. Once modified by the IGC, the fan off delay will not change
back to the configured Fan--off Delay, Gas Heat (HEAT FANOFF
DELAY) unless power is reset to the control. A light emitting diode
(LED) is provided on t he IGC t o indicat e stat us. Duri ng normal
operation the LED is continuously on. See the Trouble shooting
section if the LED is off or flashing. The IGC is located behind the
gas section access panel door.

When the control energizes Heat Stage 1 Relay (HEAT 1 RELAY),
power is sent to the W terminal on the IGC board. A check is made to
ensure that the rollout switch and limit switch are closed. The
induced --draft motor is then energized, and when speed is proven with
the Flue Gas Pressure switch, the ignition activation period begins.
The burners will ignite within 5 seconds . If the burners do not light,
there is a 22--second delay befor e another 5--second attempt. If the
burners still do not light, this sequence is repeated for 15 minutes.
After the 15 minutes have elapsed, if the burners still have not lit,
heating is locked out. The control will rese t when the reques t for heat
is temporarily removed. When ignition occurs the IGC board will
continue to monitor the condition of the rollout switch, limit switches,
the Flue Gas Pressure switch, as well as the flame sensor. If the unit is
controlled through a room thermos tat or space sensor set for auto--fan,
45 seconds after ignition occurs the indoor--fan motor will be
energized (and the outdoor--air dampers will open to thei r minimum
position). If for some reason the over temper ature limit opens prior to
the star t of the indoor fan blower, on the next attempt, the 45--second

delay will be shorte ned to 5 seconds less than the time from initiation
of heat to when the limit tripped. Gas will not be interrupted to the
burners and heat ing will continue . Once modified, the fan on delay
will not change ba ck to 45 se conds unless power is res et to the
control. When the control energizes Heat Stage 2 Relay (HEAT 2
RELAY), power is supplied to the second stage of the main gas valve.
If both stage 1 and stage 2 of the gas valve close, gas will be turned
off to the main burners.

Supply Air Tempering

Supply Air Tempering control operates the gas or electric heat to
maintain a minimum supply air temperature during conditions
where very cold outdoor air causes the supply air temperature to
fall below the configured Supply Air Tempering Setpoint. This
occurs during periods where DCV is active and increasing the
amount of outdoor air or in cases where the system is operating at
very low airflow and the calculated economizer position has
increased to maintain a constant ventilation rate.

The user can enable/disable Supply Air Tempering.
The following conditions must be true for the supply air tempering

algorithm to operate:

S The SA Tempe ring is set to Ye s (OKTOSATEMPER=YES)
S The indoor fan is on
S The System Mode is in Vent (Ventilation or Supply Fan Only) or

IAQ Override.

S The Outdoor Air Temperature < Minimum Cooling SAT 48_F.
S Heat type is gas or electric and Number Of Heat Stages > 0

If all the above are true, the SystemVut controller will monitor the
SAT sensor value and operate the first stage of heat to temper the
supply air as required in order to maintain the configured SA
Tempering Setpoint.

Two Position Damper Operation

The Two Position damper is used for ventilation. If the indoor fan
is not on the two position damper will not open. If the two position
damper is installed then ventilation method will be set to two
position damper (VENT METHOD = 2POS DMPER (2)), and
two position damper channel will be configured (2POS/ERV
CHANNEL). When the unit is occupied and the indoor fan is
running, the two position damper configured relay will energized.
This then activated the motor at the damper to open to the
mechanical stop position enforced at the actuator. This will provide
the customer set ventilation rate determine for the space.

NOTE: If two position damper is installed with a multiple speed
system, the ventilation rate will be high or low depending on the
specific speed running during set up and the current speed being
run for normal operation.

Economizer Operation

The Economizer is used for ventilation, and cooling. If the Indoor
fan is not on, the economizer will not operate. If an economizer is
installed, then Vent Method (VENT METHOD = ECON) should
be set to economizer. The unit produces a 4--20mA signal which is
then changed to a 2--10V signal with a 500 ohm resistor, which can
control the economizer actuator. The economizer output signal is
displayed by the Economizer Commanded Position (ECON CMD
POSITION). The actuator’s built--in 2 to 10VDC feedback signal
is read in as an analog input to know the actual position which is
displayed as Economizer Actual Position (ECON ACT
POSITION).

Minimum Ventilation

The economizer will open to allow ventilation when the indoor fan
is turned on and the unit is in the occupied state. The economizer
damper position at any given time for ventilation is displayed as
the Min Position in Effect (EFFECTIVE MIN POS).This
minimum position can be effected by the indoor fan speed (F.SPD)
and indoor air quality. To maintain a constant airflow through the
economizer, as the indoor fan speed decreases or increases the

22

damper minimum position will increase or decrease, respectively.
This relationship curve is shown in Fig. 16.

NOTE: The software point names are used in Fig. 16 as to not
clutter the graph. These points are not individually set and
therefore only visible from a network for troubleshooting.

These units can also be equipped with optional CO

sensors for

2

additional indoor air quality control. When unit is equipped with a
return duct CO

sensor the Economizer minimum position vs. fan speed curve

CO

2

will be recalculated based on the CO

sensor or return duct CO2sensor and outside air

2

level of the return and/or

2

outside air as shown in Fig. 16. When performing Demand
Controlled Ventilation, the damper’s Min Position in Effect
(EFFECTIVE MIN POS) will operate in the shaded area of Fig.
16 based on the IAQ Level (IAQ) and the Commanded Fan Speed
(IDF SPEED OUTPUT). See the Indoor Air Quality (IAQ)
section for more details on Demand Controlled Ventilation (DCV).

The damper position curve can be field adjusted per application if
needed.

1. Activate test mode to control the fan and dampers to
achieve the correct numbers.

2. Set the fan speed for the maximum amount needed for
design CFM requirements. This should also be the IDF
maximum Fan speed (IDF MAXSPEED).

3. Open the damper to the position which satisfies the highest
ventilation requirement running maximum fan speed, and
then set the Economizer minimum at maximum fan speed
(MIN POS @ MAX FAN) to this damper position.

4. Set the fan speed to a realistic operating speed in the upper
range, and then set the User Minimum Position Speed 1
(MIN POS SPEED 1) equal to that speed. This should be
somewhere in the 80% range.

5. Open the damper to the position which satisfies the highest
ventilation requirement running speed 1 fan speed, and then
set the User Minimum Position Damper Position 1 (MIN
POS DAMP 1) to this damper position.

6. Set the fan speed to a realistic operating speed in the mid-­range, and then set the User Minimum Position Speed 2
(MIN POS SPEED 2) equal to that speed. This should be
somewhere in the 60% range.

7. Open the damper to the position which satisfies the highest
ventilation requirement running speed 2 fan speed, and then
set the User Minimum Position Damper Position 2 (MIN
POS DAMP 2) to this damper position.

8. Set the fan speed to a realistic operating speed in the low-­range, and then set the User Minimum Position Speed 3
(MIN POS SPEED 3) equal to that speed. This should be
lowest fan speed in planned operating range.

9. Open the damper to the position which satisfies the highest
ventilation requirement running speed 3 fan speed, and then
set the User Minimum Position Damper Position 3 (MIN
POS DAMP 3) to this damper position.

The shape of the curves in Fig. 16 are determined by the
configuration parameters: User Minimum Position Speed 1 (MIN

POS SPEED 1), User Minimum Position Damper Position 1
(MIN POS DAMP 1), User Minimum Position Speed 2 (MIN
POS SPEED 2), User Minimum Position Damper Position 2
(MIN POS DAMP 2), User Minimum Position Speed 3 (MIN
POS SPEED 3), User Minimum Position Damper Position 3
(MIN POS DAMP 3), and Economizer minimum at maximum fan

speed (MIN POS @ MAX FAN). These configurations are preset
at the factory of default purposes. The Economizer minimum at
maximum fan speed (MIN POS @ MAX FAN) should be changed
based on the air balance of the unit for proper ventilation.

The user adjustable points discussed above are defaulted to zero
from the factory which forces the control to use a set of default
points. The default points should not be left for permanent
operation, as it may cause inadequate ventilation. Economizer
minimum at maximum fan speed (MIN POS @ MAX FAN) and at
least one set of user points User Minimum Position Speed 1 (MIN

POS SPEED 1) and User Minimum Position Damper Position 1
(MIN POS DAMP 1) should be used to create a linear curve to

cover the broad scope of fan operation.

Econo Max

Position

(DAMPMAX)

Damper Position

:

Key

(AQP_SPD3,
AQP_POS3)

(AQP_SPD2,
AQP_POS2)

(MP_SPD3,
MP_POS3)

10%

(AQ_SPD3,
AQ_POS3)

(AQ_SPD2,
AQ_POS2)

Indoor Fan Speed

(MP_SPD2,
MP_POS2)

(AQ_SPD1,
AQ_POS1)

Fig. 16 -- Minimum Damper Position Curves

Minimum Position Curve
IAQ Minimum Position Curve
IAQ Purge Position Curve

(AQP_SPD1,
AQP-POS1)

(MP_SPD1,
MP_POS1)

Maximum Speed

(SPEEDMAX)

IAQPMAX

MINP_

IAQMINP

MAX

C14326

23

Free Cooling

The economizer will be enable d for cooling (OK TO FREE COOL?
=Yes)if the supply air tempe rature sensor reading is valid, there are

no applied lockouts, and economize r is operational. Ec onomizer
Operational (ECON OPERATIONAL?) indicates if an economize r is
installed (VENT METHOD = ECON) and feedback indicates it is
operational. The three economizer lockouts tha t determi ne if free
cooling should be used to help with cooling are: Dry Bulb Lockout

(DRY BULB LOCKOUT), Enthalpy Lockout (ENTHALPY
LOCKOUT), and Unoccupied Free Cooling Lockout (UFC
LOCKOUT?). Any one of these lockouts will disable economizer free

cooling. See below for how each lockout occurs .

When the economi zer is avail able for free cooling (OK TO FREE
COOL? = Yes ) and the compres sion is not on, the damper will start
opening from the damper’s minimum Position in Effect

(EFFECTIVE MIN POS) based on the supply air tem perature
(SUPPLY AIR TEMP) to provide free cooling. A low cooli ng

demand (DEMAND = LOW COOL) will utilize the Low Free
Cooling SAT Setpoi nt (LOW COOL SAT SP) as the Free Cooling
Setpoint (FREECOOL SA T SP) to control the economizer. A
medium or high cooling demand (DEMAND = HIGH COOL) will
utilize the High Free Cooling SA T Setpoint (HIGH COOL SAT SP)
as the Free Cooling Setpoint (FREECOOL SAT SP) to control the
economi zer .

During free cooling the fan will start at the dedicated free cooling
speed (FREE COOL IDF SPD). After the economizer (ECON
CMD POSITION) reaches 100% (or Max) for 5 minutes, the fan
will be changed to the High Cool Speed (HIGH COOL IDF
SPD). When a high cooling demand (DEMAND = HIGH COOL)
is active the control will use the High Cool Speed (HIGH COOL
IDF SPD). The compressor will be allowed for use after the fan
and economizer are 100% (or Max) for 5 minutes. Once
compression is turned on the economizer and fan will remain at
100% until the call for cooling is removed or until the unit is no
longer allowed to free cool (OK TO FREE COOL = No).

Dry Bulb Lockout

Dry Bulb Lockout (DRY BULB LOCKOUT) occurs when any of
the following are true:

S The Outdoor Air Tempe rature (OUTDOOR AIR TEMP) is invalid.
S When Differential Dry Bulb Control is disabled (DIFF DRY

BULB CTL = Disable) and the Outdoor Air Temperature
(OUTDOOR AIR TEMP) is greater than the configured Free
Cooling Maximum Temperature (FREE COOL MAX OAT) or
less than the configured Free Cooling Minimum Temperature
(FREE COOL MIN OAT).

S When Differential Dry Bulb Control is enabled (DIFF DRY

BULB CTL = Enable) and the return air temperature (RETURN
AIR TEMP) plus the Differential Dry Bulb deadband (DIFF
DB DEADBAND) is lower than the outdoor air temperature
(OUTDOOR AIR TEMP).

Enthalpy Lockout

The control uses the Outdoor Air Temperature (OUTDOOR AIR
TEMP), Outdoor Relative Humidity (OARH LEVEL),and

Barometric Pressure (BAROMETRIC PRESS) to calculate the
Outdoor Enthalpy (OUTDOOR ENTHALPY). The control uses
the Return Air Temperature (RETURN AIR TEMP),Return
Relative Humidity (RARH LEVEL), and Barometric Pressure

(BAROMETRIC PRESS) to calculate the Return Enthalpy
(RETURN ENTHALPY). Enthalpy Lockout (ENTHALPY
LOCKOUT) occurs when any of the following are true:

S When Differential Enthalpy Control is disabled (DIFF

ENTHALPY CTL = Disable) and the outdoor enthalpy
(OUTDOOR ENTHALPY) is greater than the Maximum
Outdoor Enthalpy limit (ENTHALPY HI LIMIT).

S When Differential Dry Bulb Control is enabled (DIFF DRY BULB

CTL = Enable) and the outdoor enthal py (OUTDOOR

ENTHALPY) is greater than the return enthalpy (RETURN
ENTHALPY). The Differential Enthalpy deadband (ENTHALPY
DEADBAND) is use in the case of unlocking the Enthalpy lockout
(ENTHALPY LOCKOUT).

S The Enthalpy switch input (ENTHALPY SWITCH) is reading

high.

Unoccupied Free Cooling Lockout

Unoccupied Free Cooling lockout (UFC LOCKOUT?) occurs when
the unit is in the unoccupie d period (OCCUPIED NOW? = No) and
the Outdoor Air Tem perature (OUTDOOR AIR TEMP) is less than
the Unoccupied Free Cooling low tempe r ature (UFC LOW TEMP).

Unoccupied Free Cooling

The unoccupied free cooling algorithm attempts to maintain the
building space half way betwee n the Occupied Cool Set Point (OCC

COOL SETPOINT) and Occupied Heat Set Point (OCC HEAT
SETPOINT) using only the economizer when the conditions in the

building and the outdoors are suitable , during unoc cupied periods.
Three different points define this algorit hm : Unoccupied Free Cooling
configuration (WHEN TO UNOCC FC), Free Cooling Preoccupancy
Time configur a tion (UFC PREOCC TIME), and Free cooling allowed

(OK TO FREE COOL?).

WHEN TO UNOCC FC = 0(Disabled)

Free Cooling will only occur if the space exceeds the unoccupied
setpoints.

WHEN TO UNOCC FC = 1 (Preoccupancy)

Unoccupied free cooling can only occur when the time until the
next occupied period is less than the Unoccupied Free Cool
Pre--Occupancy Time (UFC PREOCC TIME) in minutes.

WHEN TO UNOCC FC = 2 (Unoccupied)

Unoccupied free cooling can occur throughout the entire
unoccupied period. The space temperature must be higher then the
mid--point between the occupied cooling and heating setpoints.

Power Exhaust

Power Exhaust is a function used to assist in the building exhaust
air if the barometric relief damper is not enough. It can be one or
two motors which can be controlled independently to provide 2
stages of exhaust. These two power exhaust stages are controlled
by relays on the Main Base board, and therefore need to be
configured on relay channels. To assign the channels set the PE1
RELAY CHANNEL and PE2 RELAY CHANNEL as needed.

NOTE: Factory installed power exhaust is only one channel and is
on Relay 06.

When a power exhaust 1 relay channel is configured, the control
will create a PE1 curve, example shown in Fig. 17. This curve is
created by applying the difference of the power exhaust stage 1 at
maximum fan speed (PE1 POS @ MAX SPD) and the Economizer
minimum at maximum fan speed (MIN POS @ MAX FAN) in
relationship to the minimum position curve. When a power exhaust
2 relay channel is configured, the control will create a PE2 curve,
example shown in Fig. 17. This curve is created by applying the
difference of the power exhaust stage 2 at maximum fan speed
(PE2 POS @ MAX SPD) and the Economizer minimum at
maximum fan speed (MIN POS @ MAX FAN) in relationship to
the minimum position curve.

Power exhaust 1 (PE1 RELAY) and power exhaust 2 (PE2
RELAY) are controlled using their respective curves as a threshold.
When the operating point of the Commanded Fan Speed (IDF

SPEED OUTPUT) and Economizer Commanded Position
(ECON CMD POSITION) is above the power exhaust 1 curve,

the Power exhaust 1 (PE1 RELAY) will be turned on. When the
operating point falls below the curve minus the power exhaust turn
off deadband (PE OFF DEADBAND) the Power exhaust 1 (PE1
RELAY) will be turned off. Power exhaust 2 operates the same as
Power exhaust 1 except using the PE2 curve.

24

Econo Max

Position

(DAMPMAX)

(PE2_SPD3,
PE2_POS3)

Key:

Minimum Position Curve
Power Exhaust 1Curve
Power Exhaust 2 Curve

Damper Position

10%

2(PE2_SPD2,

(PE1_SPD3,
PE1_POS3)

(MP_SPD3,
MP_POS3)

PE2_POS2)

(PE1_SPD2,
PE1_POS2)

(MP_SPD2,
MP_POS2)

Indoor Fan Speed

Fig. 17 -- Power Exhaust Operation Curves

(PE2_SPD1,
PE2_POS1)

PE2PMAX

(PE1_SPD1,
PE1_POS1)

PE1PMAX

(MP_SPD1,
MP_POS1)

MINP_MAX

Maximum Speed

(SPEEDMAX)

C14327

Indoor Air Quality (IAQ)

Indoor air quality is typically measured using a CO2sensor whose
measurements are displayed in parts per million (ppm). Outdoor air
quality may be measured with a CO
differential demand ventilation control. The factory--installed
indoor air quality CO

sensor is mounted in the return section. A

2

field--installed indoor air quality CO
the return or in the occupied space. The indoor air quality modes of
operation can be affected by the IAQ Analog Input Config
(ANALOG IAQ CTRL) and other related and limit configurations
as described below.

IAQ (Analog Input)

When IAQ assigned channel (IAQ SENSOR CHAN) is set for an
analog input that input channel will be mapped to the Indoor Air
Quality (IAQ LEVEL). The control is configured for indoor air
quality sensors which provide 4 to 20 mA signal for 0 to 2000 ppm

. If the sensor being used has a different range, the ppm

CO

2

display range must be reconfigured by entering new values for the
IAQ Sensor Value at 4mA (IAQ PPM @ 4MA) and IAQ Sensor
Value at 20mA (IAQ PPM @ 20MA).

ANALOG IAQ CTRL =0(NoIAQ)

This signifies that there is no IAQ sensor installed. The economizer
damper will operate based on the minimum position curve.

ANALOG IAQ CTRL = 1 (DCV)

During Demand Controlled Ventilation (DCV), the damper
modulates on or between two ventilation curves depending upon
the difference between the Indoor Air Quality (IAQ LEVEL) and
the Outdoor Air Quality (OAQ LEVEL). The lower of these two
curves is referred to as the IAQ Minimum Position Curve, and the
higher curve is the Minimum Position curve discussed in the
Minimum Ventilation section under Economizer Operation. Refer

sensor for indoor--outdoor

2

sensor may be mounted in

2

to that section on how the minimum Position curve is created. See
Example Curves in Fig 16.

The IAQ Minimum Position curve is created by applying the
difference of the IAQ position at maximum fan speed (IAQ POS @

MAX SPD) and the Economizer minimum at maximum fan speed
(MIN POS @ MAX FAN) in relationship to the minimum position
curve. The IAQ position at maximum fan speed (IAQ POS @
MAX SPD) should be set to an economizer position that brings in

enough fresh air to remove contaminates and CO

generated by

2

sources other than people. The Economizer minimum at maximum
fan speed (MIN POS @ MAX FAN) should be set to an
economizer position that brings in fresh air to remove contaminates
and CO

generated by all sources including people when the

2

indoor fan is operating at the IDF Maximum Fan Speed
(MAXIMUM IDF SPEED). The Economizer minimum at
maximum fan speed (MIN POS @ MAX FAN) value is the design
value for maximum occupancy.

The economizer Min Position in Effect (EFFECTIVE MIN POS)
will follow the IAQ Minimum Position curve while the Indoor Air
Quality level (IAQ LEVEL) is less than the Outdoor Air Quality
Level (OAQ LEVEL). The control will begin to open the damper
more than the IAQ Minimum Position curve when the IAQ level
begins to exceed the OAQ level by a configurable amount. This
amount is referred to as AQ Differential Low (LOW AIR.Q
DIFF). When the differential between IAQ and OAQ reaches AQ
Differential High (HIGH AIR.Q DIFF), the economizer Min
Position in Effect (EFFECTIVE MIN POS) will follow the
Minimum Position Curve. When the IAQ/OAQ differential is
between AQ Differential Low (LOW AIR.Q DIFF) and AQ
Differential High (HIGH AIR.Q DIFF), the control will modulate
the damper between the IAQ Minimum Position Curve and the
Minimum Position Curve in a linear manner as shown as the
shaded area in Fig. 16. As a simple example Fig. 18 shows the Min

25

Position in Effect (EFFECTIVE MIN POS) relationship while the
Commanded Fan Speed (ECON CMD POSITION) is held at the
maximum speed.

ANALOG IAQ CTRL = 2 (Override IAQ)

Override IAQ is reserved for a future release.

ANALOG IAQ CTRL = 3 (Control Minimum Position)

An external 4 to 20 mA source is used to set the Min Position in
Effect (EFFECTIVE MIN POS). The 4mA signal corresponds to
0% and the 20 mA signal corresponds to 100%. In this mode,
configuration such as Economizer minimum at maximum fan
speed (MIN POS @ MAX FAN), IAQ position at maximum fan
speed (IAQ POS @ MAX SPD) and the economizer minimum
position and DCV minimum position curves in Fig. 16 and Fig. 18
are not used. If the indoor fan is not operating, the economizer
position will be zero. The actual damper position may exceed the
economizer Min Position in Effect (EFFECTIVE MIN POS) to
provide economizer cooling.

MIN POS @

MAX FAN

VENTILATION FOR PEOPLE

IAQ POS @

MAX FAN

INCREASING VENTILATION

VENTILATION FOR SOURCES

100 700 INSIDE/OUTSIDE CO

LOW AIR.Q DIFF HIGH AIR.Q FIFF

DIFFERENTIAL

2

C14328

Fig. 18 -- Example

Outdoor Air Quality (Analog Input)

The default for the Outdoor Air Quality (OAQ LEVEL) is 400
ppm CO

when the OAQ sensor is not assigned an input channel.

2

When OAQ Assigned channel (OAQ SENSOR CHAN) is set for
an analog input that input channel will be mapped to the Outdoor
Air Quality (OAQ LEVEL). The outdoor air quality sensor
provides a 4 to 20 mA signal corresponding to 0 to 2000 ppm

. If a field supplied sensor has a different range, the ppm

CO

2

display range must be reconfigured by entering new values for the
OAQ Sensor Value at 4mA (OAQ PPM @ 4MA) and OAQ Sensor
Value at 20mA (OAQ PPM @ 20MA).

Pre--occupancy Purge

The control has the option for a pre--occupancy purge to refresh the
air in the space prior to occupancy. This feature is enabled by
setting PREOCC PURGE ENBL to Yes. This function is also
referred to as the IAQ purge function.

The IAQ Purge will operate under the following conditions:

S Purge is enabled
S the unit is in the unoccupied state
S Current Time is valid
S Next Occupied Time is valid
S time is one hour prior to next occupied period
S the OAT is greater than the lockout (PREOCC LOW LIMIT)

The IAQ Purge Position curve is created by applying the difference
of the IAQ purge position at maximum fan speed (PURGE POS @

MAX) and the Economizer minimum at maximum fan speed (MIN
POS @ MAX FAN) in relationship to the minimum position curve.
The IAQ purge position at maximum fan speed (PURGE POS @
MAX) should be set to an economizer position that brings in

enough fresh air over an hour period to remove contaminates and

during the unoccupied period. When the preoccupancy purge

CO

2

function is active (IN PREOCC PURGE?), the economizer Min
Position in Effect (EFFECTIVE MIN POS) will follow the IAQ
Purge Position curve.

Temperature Compensated Start

Space control set points are usually set to 2 different levels for
unoccupied period and occupied period. Unoccupied set points
saves energy, while occupied set points provide occupant comfort.
The time period it takes for the RTU to bring the space from its
current condition in unoccupied mode to its occupied set point is
referred to as start bias time, or bias time. The algorithm to
calculate this bias time is called Temperature Compensated Start.
This is required for ASHRAE 90.1 compliance. When temperature
compensated start is running (TCS ACTIVE?) the control uses the
occupied set points to control the space.

When Temperature compensated start is enabled (ADAPTIVE
TCS?), no other configuration parameters are needed for this
algorithm, because the algorithm will automatically adjust the Bias
Time based on the data collected during the period of last time
optimal start. The inputs to the calculation algorithm includes space
temperature, unoccupied set points, occupied set points, outdoor air
temperature, and supply air temperature. Bias time is changed
dynamically per RTU operation.

When Temperature compensated start is disabled (ADAPTIVE
TCS?), the control will use the User Temperature compensated
Start bias time (USER TCS BIASTIME) in determining when to
start controlling to the occupied set points. If the User Temperature
compensated Start bias time (USER TCS BIASTIME) is set to
zero, the control will switch to the occupied setpoints at the time of
occupancy.

Linkage

The SystemVut controller will support 3Vt, VAV an d V V T
zoning system on a CCN system or Open VVT and VAV systems
on a BACnet MS/TP System. All that is required is to configure
the Open or 3V Master zone to use the SystemVu rooftop unit as
its airsource. The SystemVu control will need to be configured for
the proper network protocol (BAS PROTOCOL) and set for Space
Sensor Control (UNIT CTRL TYPE). The SystemVu controller
will reply to the zoning system and change its operating parameters
to meet the demand of the zoning system. Status of this process can
be viewed in the airside linkage tab of the property pages in the

R

application or by viewing the linkage maintenance table

i-- Vu
with a CCN tool.

Carrier Comfort NetworkR(CCN) Operation

The SystemVu controller can be configured to connect to a CCN
system. The SystemVu controller h as one RS --485 BMS port that
can be configured from the local display for BACnet or CCN. The
BMS configuration parameters can be found in the
SETTINGSNETWORK SETTINGS submenu. The first
configuration is the BMS system for CCN systems change this
configuration from BACnet to CCN then set the CCN BAUD rate,
the bus and element number and you will be able to find the
controller with any CCN tool then upload the CCN tables in the
controller for use by the tool.

BACnet Network Operation

The SystemVut controller is ready to connect to BACnet. The
SystemVu control l er has one RS--485 BMS port that can be
configur ed from the local display for BACnet or CCN. The defa ult
setting is BACnet and the Default BACnet Baud rate is 76800. These
settings are found on the SETTINGSNETWORK SETTINGS sub
menu of the local displ ay. There are four other settings for i--Vu

R

R

26

compatibility and for setting the device ID and MAC address of the
control ler . See the table below for assistance.

Before connecting to the BACnet system determine the system
requirements and use the following guide to configure the BACnet
settings. Then power the controller down, connect to the BACnet
MS/TP network and you are ready to discover your controller.

R

For i--Vu

systems with auto addressing desired the controller is
already set with the defaults from the factory ready to connect to
this type of system; just set the MAC address of the controller from
0 to 99 and then power down and connect to the network. The
router will find and send the network number to the controller and
the controller will set it device ID with the network base appended
by the Mac address.

For i--Vu and other BACnet systems when it is required to send the
device ID to the controller change the ALC/i--Vu auto ID scheme to
no and set the MAC address from 0 to 99 like before. Then connect to
the network and write the device ID to the controller at the MAC
address you set. The controller will accept and retain the device ID
written to the device Id property of the object ID.

T o manuall y set the device ID from the local displa y set the BACnet
auto/manual to manual. This allows use of the full range of 1 to 127
for t he MAC address and s et the device ID in the BACnet ID
selection of the local display. It can only be set from the local display
and will not accept a write to the device ID property in the object ID.

BACnet ID
Auto/Manual

Manual ON or OFF

Auto OFF

Auto ON

i --- V u A u t o

Scheme

How Device is derived

Local display BACnet Id -- -BACNet
Writes not allowed

Device Id Prefix + Mac --- BACnet
writes allowed

Device Id Prefix + MAC (prefix up­dated by color cache) --- BACnet
writes not allowed

MAC
range

0 --- 1 2 7

0 --- 9 9

0 --- 9 9

Alarm Handling

There are a variety of different alerts and faults in the system, the term
alarm is used to reference alerts and faults. Alerts are indicated by
AXXX (where XXX is the alert number) on the display and generally
signify a warning of some sort or the improperly functioning circuit
can resta rt without human interaction. If an fault occurs, indicated by
FXXX (where XXX is the fault number), a major functi on of the unit
is inoperable or the damaged circuit will generally not restart without
an alarm reset via the display or CCN.

The response of the control system to various alerts and faults depends
on the seriousness of the particular alert or fault. In the mildest case, an
alert does not affect the opera t ion of the unit in any manner. An alert
can also cause a “strike.” A “striking” alert will cause the circuit to
shut down for 15 minutes. This feat ur e reduce s the likelihood of false
alarms caus i ng a properly working system to be shut down incorr ectly.
If three stri kes occur before the circuit has an opportunit y to show that
it can function properly, the circuit will strike out, causing the
shutdown fault for that particular circ uit. Once activated, the shutdown
fault can only be cleared via an alarm reset.

However, circuits with strike s will be given an opportunity to rese t
their str ike counter to ze ro. As discussed above, a strike typically
causes the circuit to shut down. Fifteen minutes later, that circuit will
once again be allowe d to run. If the “troubl ed” circuit runs
continuously for a user defined time (SETTINGSUNIT
CONFIGURATI ONSCOOLINGSTRI KE CLEAR TIME) with
no detect able problems the strike counter will be reset to zero. Default
value is 5 minutes.

Alarm Relay Output

The alarm relay output is a configurable normally open 24--VAC
output defaulted to relay 11 on the Main Base Board (MBB) TB2
connector. Selection of which alerts and faults will result in closing
of the alarm relay may be set in the Alarm Relay Configuration
(SETTINGSUNIT CONFIGURATIONSALARM RELAY).

Setting a configuration to YES will result in the alarm output relay
to energize when that particular condition is in an alarm state.
Setting a configuration to NO will result in no action by the alarm
output relay for that particular condition.

NOTE: An accessory filter switch can be used along with the
alarm relay output function to indicate dirty filter service need. See
the Troubleshooting section for more information on viewing,
diagnosing, and clearing alerts and alarms.

TROUBLESHOOTING

The SystemVut display shows actual operat ing conditions of the unit
while it is running. If there are alarms or there have been alarms, they
will be displayed in either the active faults, active alerts, or the history
alarm list (see Table 12 starting on page 32 ). Service Test mode allows
proper operation of the compres sors, fans, and other components to be
checked while the unit is not opera t ing. See Service Test (on page 10).

Complete Unit Stoppage

There are several conditions that can cause a complete unit
stoppage, including:

S A fault is active which causes the unit to shut down.
S Cooling and heating loads are satisfied.
S Programmed occupancy schedule.
S General power failure.
S Tripped 24-volt transformer circuit breakers.
S Blown fuse or circuit breakers
S Unit is turned off through the network.

Restart Procedure

Before attempting to restart the machine, check the faults and alerts
list to determine the cause of the shut down. If the shutdown fault
for a particular control function has occurred, determine and
correct the cause before allowing the unit to run under its own
control again. When there is problem, the unit should be diagnosed
in Service Test mode. The faults must be reset before the control
function can operate in either Normal mode or Service Test mode.

Faults and Alerts

Viewing and Clearing Unit Alarms

Presence of active alarms will be indicated on the SystemVu display
by the Alarm Status lights. When alerts are active the yellow
“ALERT” light will be lit. When faults are active the red “FAUL T”
light will be lit. When the unit is operational, then green “RUN” light
will be lit. The SystemVu controller standby screen will be updated
with the active alarms for easy access. Presence of active alarms may
also be signaled on the Alarm Output terminals. Each alarm may also
be broadcast on the CCN network. Active ala rms and past ala rm
history can be reviewed and cleared via the local display or a network
device. The following menu locations are used for the local display:

ACTIVE FAULTS -- Displays the list of active faults in order of
occurrence.

ACTIVE ALERTS -- Displays the list of active alerts in order of
occurrence.

HISTORY -- Displays the list of active and previously active faults
and alerts in order of occurrence with time and date.

RESET FAULTS/ALERTS --User command to manually reset
faults and alerts.

Each alarm can have up to 3 data points stamped along with date
and time to assist in troubleshooting. Pressing ENTER on the
alarm or expanded screen will provide these data points.

Diagnostic Alarm Codes and Possible Causes

Fault F010 – MBB LOW VOLTAGE

This fault occurs when the MBB supply voltages falls below 17
volts AC. When this occurs the control will shut down the unit.
This will automatically clear when the supply voltage rises above
19 volts AC. The cause of this fault is usually a brownout
condition, low supply voltage, or supply power missing a phase.

27

Fault F011 – MBB REFERENCE VOLTAGE

This fault occurs when the MBB internal microprocessor’s DC
reference voltages is out of range. When this occurs the control will
shut down the unit. This will automatically clear when the DC
reference voltage goes back in range. The cause of this fault is
usually a MBB failure or supply voltage out of range.

Alert A012 – MBB ZERO CROSSING

This fault occurs when the MBB supply voltage frequency is out of
range. When this occurs the control will issue an alert. This will
automatically clear when the supply voltage goes back in range.
The cause of this fault is usually a MBB failure or supply voltage
frequencytohighortolow.

Fault F013 – MBB FUSE 2 OPEN

This fault occurs when the MBB’s internal fuse number 2 exceeds
threshold temperature. When this occurs the control will shut down
the unit. This will automatically clear when the fuse temperature
gets back in range. The cause of this fault is usually a switch input
has a wiring error (short) or the switch pulled too much current.
Discrete input number 2, Fire Shutdown input, and the IGC fan
request are connected to fuse 2.

Fault F014 – MBB FUSE 3 OPEN

This fault occurs when the MBB’s internal fuse number 3 exceeds
threshold temperature. When this occurs the control will shut down
the unit. This will automatically clear when the fuse temperature
gets back in range. The cause of this fault is usually a switch input
has a wiring error (short) or the switch pulled too much current.
Configurable discrete input numbers 12, 13, and 14 are connected
to fuse 3.

Alert A015 – MBB RNET VOLTAGE RANGE

This fault occurs when the MBB’s Rnet 12 volt output is out of
range. When this occurs the control will issue an alert, and any
accessory connected to the Rnet plug may not operate properly.
This will automatically clear when the voltage goes back in range.
The cause of this fault is usually a MBB failure or supply voltage
out of range.

Alert A016 – MBB 24VDC RANGE

This fault occurs when the MBB’s 24vdc output falls below 17
volts DC. When this occurs the control will put the Analog Input
number’s 6, 7, and 8 into error state. This will automatically clear
when the voltage rises above 19 volts DC. The cause of this fault is
usually a MBB failure or supply voltage out of range.

Alert A017 – MBB 5VDC RANGE

This fault occurs when the MBB’s 5vdc output falls below 4.5
volts DC. When this occurs the control will put the Transducer
inputs into error state. This will automatically clear when the
voltage rises above 4.5 volts DC. The cause of this fault is usually
a MBB failure or supply voltage out of range.

Fault F018 – MBB EEPROM FAILURE

The unit will completely shut down. The serial EEPROM chip on
the MBB which stores the unit’s configuration is not responding.
Recovery is automatic but MBB board replacement may be
necessary. Cycling the power to the control should be tried before
board replacement.

Alert A019 – MBB CLOCK FAILURE

The alert occurs when the RTC clock chip on the MBB is not
responding. Time and date functions will not operate, such as local
occupancy schedules. The unit will default to 24/7 unoccupied
mode. Recovery is automatic but MBB board replacement may be
necessary. Cycling power to the control and reconfiguring the time
and date should be tried before board replacement.

Fault F020 – SOFTWARE ERROR

The unit will completely shut down. The software on the MBB is
not responding. Recovery is automatic if the software is able to
reset the board but software change may be necessary. Cycling the
power to the control should be tried before board replacement.

Alert A100 – SAT SENSOR FAILURE

This alert occurs when the fan supply temperature sensor is in an
error state. Economizer cooling cannot occur while this alert is
active. The unit will not be able to honor SAT limits. This alert
resets automatically. The cause of the alert is usually a faulty
thermistor, a shorted or open thermistor caused by a wiring error,
or a loose connection.

Alert A101 – FST SENSOR RANGE

This alert occurs when the fan supply temperature sensor is outside
the range –40_F to 245_F (–40_Cto116_C). This alert resets
automatically. The cause of the alert is usually a faulty thermistor, a
shorted or open thermistor caused by a wiring error, or a loose
connection.

Alert A102 – FST OPEN SENSOR

This alert occurs when the fan supply temperature sensor reads as
an open circuit. This alert resets automatically. The cause of the
alert is usually a faulty thermistor or an open thermistor caused by
a wiring error, or a loose connection.

Alert A103 – FST SHORTED SENSOR

This alert occurs when the fan supply temperature sensor reads as a
short circuit. This alert resets automatically. The cause of the alert is
usually a faulty thermistor or a shorted thermistor caused by a
wiring error, or a loose connection.

Alert A104 – OAT SENSOR RANGE

This alert occurs when the outdoor air temperature is outside the
range –40_F to 245_F (–40

_Cto116_C). All ambient temperature

lockout limits for cooling and heating are ignored. All cooling
control logic will assume OAT is high. For economizer equipped
units, the economizer will not operate to provide cooling. The
economizer will still operate for ventilation. The control will use
normal operation for outdoor fan control. For units with CCH
crankcase heat relay control, the crankcase heat relay will be turned
on if any compressor is off. This alert resets automatically. The
cause of the alert is usually a faulty thermistor, a shorted or open
thermistor caused by a wiring error, or a loose connection.

Alert A105 – OAT OPEN SENSOR

See Alert A104

Alert A106 – OAT SHORTED SENSOR

See Alert A104

Alert A107 -- RAT SENSOR RANGE

This alert occurs when the return air temperature is outside the
range –40_F to 245_F (–40_Cto116_C). Differential dry bulb
crossover control can not occur. Free cooling can only be
controlled by the OAT and enthalpy switch. The economizer
mechanically disconnected alert will not be diagnosed. This alert
resets automatically. The cause of the alert is usually a faulty
thermistor, a shorted or open thermistor caused by a wiring error,
or a loose connection.

Alert A108 – RAT OPEN SENSOR

See Alert A107

Alert A109 – RAT SHORTED SENSOR

See Alert A107

Alert A110 – SPT SENSOR RANGE

This alert occurs when the temperature is outside the range –40_F
to 245_F (–40_Cto116_C). Cooling and heating will not operate.
For economizer equipped units, the economizer will still operate
for ventilation. This alert resets automatically. The cause of the
alert is usually a faulty thermistor in the T--55, T--56, or T--58
device, a shorted or open thermistor caused by a wiring error, or a
loose connection.

Alert A111 – SPT OPEN SENSOR

See Alert A110

Alert A112 – SPT SHORTED SENSOR

See Alert A110

28

Alert A130 – CIR.A SSP SENSOR RANGE

This alert occurs when the pressure is outside the range --6.7 to 420
psig. A circuit cannot run when this alert is active. The cause of the
alert is usually a faulty transducer, faulty 5--v power supply, or a
loose connection. Use the transducer voltage drop table to
determine where the error is introduced.

Alert A131 – CIR.A SSP OPEN SENSOR

See Alert A130

Alert A132 – CIR.A SSP SHORT SENSOR

See Alert A130

Alert A133 – CIR.A SDP SENSOR RANGE

This alert occurs when the pressure is outside the range 14.5 to 667
psig. A circuit cannot run when this alert is active. The cause of the
alert is usually a faulty transducer, faulty 5--v power supply, or a
loose connection. Use the transducer voltage drop table to
determine where the error is introduced.

Alert A134 – CIR.A SDP OPEN SENSOR

See Alert A133

Alert A135 – CIR.A SDP SHORT SENSOR

See Alert A133

Alert 150 -- OACFM OPEN SENSOR

This alert occurs when the Outdoor Air CFM sensor input is 0 mA
and the sensor is configured and installed. Check sensor and
wiring. This alert clears automatically.

Alert 151 -- OACFM SHORTED SENSOR

This alert occurs when the Outdoor Air CFM sensor input shorted
and the sensor is configured as installed. Check sensor and wiring.
This alert clears automatically.

Alert A160 – OARH OPEN SENSOR

This alert occurs when the Outdoor Air Relative Humidity sensor
input is 0 mA and the sensor is configured as installed. Outside Air
Enthalpy cannot be calculated therefore no enthalpy crossover can
be used and only dry bulb will be used in determining free cooling.
Check sensor and wiring. This alert clears automatically.

Alert A161 – OARH SHORTED SENSOR

This alert occurs when the Outdoor Air Relative Humidity sensor
input shorted and the sensor is configured as installed. Outside Air
Enthalpy cannot be calculated therefore no enthalpy crossover can
be used and only dry bulb will be used in determining free cooling.
Check sensor and wiring. This alert clears automatically.

Alert A162 – RARH OPEN SENSOR

This alert occurs when the Return Air Relative Humidity sensor
input is 0 mA and the sensor is configured as installed. Return Air
Enthalpy cannot be calculated therefore no differential enthalpy
crossover can be used. Dry bulb and single enthalpy will be used in
determining free cooling. Check sensor and wiring. This alert
clears automatically.

Alert A163 – RARH SHORTED SENSOR

This alert occurs when the Return Air Relative Humidity sensor
input shorted and the sensor is configured as installed. Return Air
Enthalpy cannot be calculated therefore no differential enthalpy
crossover can be used. Dry bulb and single enthalpy will be used in
determining free cooling. Check sensor and wiring. This alert
clears automatically.

Alert A164 -- IAQ OPEN SENSOR

This alert occurs when the IAQ input is 0 mA and the sensor is
configured as installed. IAQ operation will be disabled. Check
sensor and wiring. This alert clears automatically.

Alert A165 -- IAQ SHORTED SENSOR

This alert occurs when the IAQ input is shorted and the sensor is
configured as installed. IAQ operation will be disabled. Check
sensor and wiring. This alert clears automatically.

Alert A166 -- OAQ OPEN SENSOR

This alert occurs when the OAQ input is 0 mA and the sensor is
configured as installed. OAQ operation will be disabled. Check
sensor and wiring. This alert clears automatically.

Alert A167 -- OAQ SHORTED SENSOR

This alert occurs when the OAQ input is shorted and the sensor is
configured as installed. OAQ operation will be disabled. Check
sensor and wiring. This alert clears automatically.

Alert A168 -- SPACE RELATI VE HUMIDITY OPEN SENSOR

This alert occurs when the SPRH input is 0 mA and the sensor is
configured as installed. Check sensor and wiring. This alert clears
automatically.

Alert A169 -- SPACE HUMIDITY SHORTED SENSOR

This alert occurs when the SPRH input is shorted and the sensor is
configured as installed. Check sensor and wiring. This alert clears
automatically.

Alert A170 – ECON FEEDBACK RANGE

This alert occurs when the Economizer analog feedback signal is
outside the range of 1.3vdc to 10.3vdc and the feedback is
configured to use. A short is 10.5vdc and an open circuit is less
than 0.1vdc. Economizer diagnostics operation will be disabled.
This is usually caused by a wiring problem, actuator failure, or the
wrong actuator. Investigate using the Low Voltage Schematic;
make sure the feedback signal from the actuator is correct. This
alert clears automatically.

Alert A171 – ECON FEEDBACK OPEN

See Alert A170

Alert A172 – ECON FEEDBACK SHORTED

See Alert A170

Alert A190 – TSTAT HEAT/COOL CALLS

This alert occurs in Thermostat mode when Y1 or Y2 is energized
simultaneously with W1 or W2. Verify thermostat and thermostat
wiring. The software will enter either the cooling or heating mode
depending upon which input turned on first. This alert resets
automatically when Y1 and Y2 are not on simultaneously with W1
and W2.

Alert A191 – TSTAT IMPROPER COOL

This alert occurs in Thermostat mode when Y2 or Y3 is energized
and Y1 is not. Verify thermostat and thermostat wiring. When this
occurs the control will treat the inputs as a number instead of
specific input. Example a Y2 and Y3 would mean 2 cooling inputs
so the control would treat that as is a Y1 and Y2 was active. This
alert resets automatically when Y1 is turned On.

Alert A192 – TSTAT IMPROPER HEAT

This alert occurs in Thermostat mode when W2 is energized and
W1 is not. Verify thermostat and thermostat wiring. When W2
turns On, the software will behave as if W1 and W2 are both On.
When W2 turns Off, the software will behave as if W1 and W2 are
both Off. This alert resets automatically when W1 is turned On.

Fault F200 – FIRE SHUTDOWN

This fault occurs when the fire shutdown input is either open or
closed depending upon its configuration. This fault is usually
caused by an auxiliary device that is trying to shut down the unit,
e.g., smoke detector. This will cause a unit shutdown condition.
Verify that the configuration is set correct, verify the wiring and
auxiliary device. This fault resets automatically.

Fault F201 – CONDENSATE OVERFLOW

This fault occurs when the COFS input is either open or closed
depending upon its configuration. This fault is usually caused by
water reaching a high level in the drain pan. This will cause a
cooling lockout. Verify that the configuration is set correct, verify
the wiring and auxiliary device. This fault resets automatically.

29

Alert A203 – DIRTY FILTER

This alert occurs when the Filter Status switch senses a plugged
filter for 5 continuous seconds after the indoor fan has been
running for 10 seconds or if the fan has run for longer than the
change filter time. Because the Dirty Air Filter switch can be
configured normally opened or closed, the switch might be open or
closed. Verify that the configurations are set correct, verify the
wiring and filter status switch. The hose should be connected to the
low side of the switch. The alert resets automatically if it was
tripped due to the filter switch. If the alert is tripped because of the
timer, it will need to be reset after the filter has been replaced or
inspected. Rest the time with the RESET FILTER TIME point is
located under RUN STATUS  GENERAL or INPUTS 
GENERAL INPUTS.

Fault F204 – REMOTE SHUTDOWN

This fault occurs when the remote shutdown input is either open or
closed depending upon its configuration and configured to set a
fault. This fault is usually caused by an auxiliary emergency device
that is trying to shut down the unit. This will cause a unit shutdown
condition. Verify that the configuration is set correct, verify the
wiring and auxiliary device. This fault resets automatically.

Fault F205 – IDF MANUAL LIMIT TRIP

This fault occurs when the indoor fan limit switch input is lost. The
switch is a manual rest limit that is normally closed. This fault is
usually caused by excess heat seen at the indoor fan. This fault will
cause a unit shutdown condition. Since the switch is manual reset
the button on the switch will have to be reset before reseting this
fault in the software.

Fault F206 – PHASE MONITOR TRIP

This fault occurs when the phase monitor input is either open or
closed depending upon its configuration. This fault is usually
caused by loss of phase or improper phasing of a 3 phase power
supply. This will cause a unit shutdown condition. Verify that the
configuration is set correct, verify the wiring and supply power.
This fault resets automatically.

Alert A210 – GENERAL STATUS

This alert occurs when the general status input is either open or
closed depending upon its configuration and configured to set a
alert. This alert is usually caused by an auxiliary switch device that
is trying to send a warning about the unit. Verify that the
configuration is set correct, verify the wiring and auxiliary device.
This alert resets automatically.

Fault F211 – GENERAL STATUS

This fault occurs when the general status input is either open or
closed depending upon its configuration and configured to set a
fault. This fault is usually caused by an auxiliary switch device that
is trying to shut down the unit. This will cause a unit shutdown
condition. Verify that the configuration is set correct, verify the
wiring and auxiliary device. This fault resets automatically.

Fault F310 – CIRA DOWN DUE TO FAIL

This fault occurs when both compressors on circuit A have 3
strikes. Investigate the alerts that caused the strikes to occur, and
correct or test as needed. Manual alarm reset or power cycle is
required to rest this fault.

Fault F311 – CIRA LOW CHARGE

This alert occurs when the compressors are off and both the
discharge and suction pressure are less than the low charge level
(LOW CHARGE LEVEL) and OAT is greater than the low charge
limit (NO LOW CHARGE OAT). The cause of the alert is usually
low refrigerant pressure or faulty pressure transducers. This alert
only occurs when the compressor is OFF because the low
refrigerant pressure alert will handle this situation when the
compressor is operating. Manual alarm reset or power cycle is
required to rest this fault.

Alert A312 – CIR.A UNEXPECTED OFF

These alerts occur when the suction pressure raises the configured
amount and the pressure ratio drop the configured amount both in
a 10 second window during compressor operation. When this
occurs, the control turns off the compressors and logs a strike for
which compressor that was on. This alerts reset automatically. The
possible causes are: high --pressure switch (HPS) open (the HPS is
wired in series with compressor relays on the MBB), compressor
internal protection is open, or a wiring error (a wiring error might
not allow the compressor to start).

Alert A313 – CIR.A HIGH DISCHARGE

This alert occurs when the discharge pressure is greater than the
configured CIR.A SDP LIMIT amount. This alert resets
automatically when the pressure falls 20 psig below the threshold.
When running both compressors the control will remove A1 and
add a strike to it. The control will also set the ODFs to the high
cool speed. The cause of the alert is usually an overcharged system,
high outdoor ambient temperature coupled with dirty outdoor coil,
plugged filter drier, or ODF speeds being set too low.

Alert A314 – CIR.A HPS TRIP

This alert occurs when the discharge high pressure switch opens.
This alert resets automatically when the pressure falls below the
switch threshold and the switch closes for 3 minutes. The control
will add a strike for which ever compressors were on. The control
will also set the ODFs to the high cool speed. The cause of the alert
is usually an overcharged system, high outdoor ambient
temperature coupled with dirty outdoor coil, plugged f

ilter drier, or

ODF speeds being set too low.

Alert A315 – CIR.A LOW DISCHARGE

This alert occurs when the discharge temperature is less than the
OAT plus the configured LOW DISCHARGE LEV amount. This
alert resets automatically. The control will add a strike for which
ever compressors were on. The cause of the alert is usually an
undercharged system, low outdoor ambient temperature coupled
with dirty outdoor coil, plugged filter drier, or ODF speeds being
set too high.

Alert A316 – CIR.A LOW SUCTION

This alert occurs when the compressor is operating and the
evaporating temperature (converted from the suction pressure) is
less than configured low suction control levels, LOW SUC
LEVEL 1, LOW SUC LEVEL2,orLOW SUC LEVEL3.The
circuit SST value must be less than LOW SUC LEVEL 1 (for 5
minutes), LOW S UC LEVEL 2 (for 4 minutes), or LOW SUC
LEVEL 3 (for 3 minutes when using the economizer and 1.5
minutes when not using the economizer) for the alert to occur.
When the outdoor temperature is less than 40_F, the above values
are reduced 1_F for every 2_F OAT is below 40_F. All the above
timers will reset if the suction temperature rises above LOW SUC
OK TEMP for 1 minute. This alert causes a strike for the respective
circuit. This alert will activate when the coil becomes frosted.
However, during the 15--minute reset period, the coils will thaw
and strike should clear and restart if there is nothing else wrong
with the circuit. The alert resets automatically. The cause of the
alert is usually low refrigerant charge, dirty filters, evaporator fan
operating backwards, loose or broken belt, plugged filter drier,
faulty transducer, excessively cold return air, or stuck open
economizer when the ambient temperature is low.

Alert A317 – CIR.A PRESSURE RATIO

This alert occurs when the Circuit A pressure ratio is less than the
configured MIN PRESSURE RATIO amount. This alert resets
automatically. The control will add a strike for which ever
compressors were on. The cause of the alert is usually an
undercharged system, low outdoor ambient temperature coupled
with dirty outdoor coil, plugged filter drier, or ODF speeds being
set too high.

30

Fault F318 – COMPRESSOR STUCK ON

This alert occurs when the Suction pressure does not raise the
minimum suction amount (CIR.A MIN SUC.P ) and the ratio did
not fall at least the off pressure ratio (OFF P.RATIO). When this
occurs, the control turns off all of the compressors, and enters a
safety shutdown condition. The possible causes are a welded
contactor or frozen compressor relay on MBB. Manual alarm reset
or power cycle is required to rest this fault.

FaultF319–C.A1DOWNDUETOFAIL

This fault occurs when compressor A1 has 3 strikes. Investigate the
alerts that caused the strikes to occur, and correct or test as needed.
Manual alarm reset or power cycle is required to rest this fault.

Alert A320 – C.A1 REVERSE ROTATION

This alert occurs when 10 seconds after the compressor turns on,
the suction rose and the discharge pressure dropped. This alert
causes a strike for the compressor. The alert resets automatically.
The cause of the alert is usually compressor wiring causing reverse
rotation or a faulty compressor.

Alert A321 – C.A1 FAIL TO PRESSURE

This alert occurs when 10 seconds after the compressor turns on,
the suction did not drop more that suction amount (CIR.A MIN
SUC.P) and discharge pressure did not rise more than discharge
amount (CIR.A MIN DIS.P). This alert causes a strike for the
compressor. The alert resets automatically. The cause of the alert is
usually compressor wiring causing reverse rotation or a faulty
compressor.

Alert A410 – IGC IGNITION FAILURE

This alert occurs when the IGC fan request does not activate 15
minutes after turning heat 1 on when configured for Gas Heat. The
control will lockout all the heat stages. This alert will automatically
reset after the IGC fan request occurs. The cause of this alert is
usually faulty wiring of the IGC, no gas flow, or wrong
configuration.

Fault F411 – ROLLOUT WITHOUT HEAT

This fault occurs when the IGC fan request activates and the heat
has been off for at least 3 minutes when configured for Gas Heat.
The control will enter the safety shutdown condition. This alert
will automatically reset after the IGC fan request turns off for 10
minutes. The cause of this alert is usually faulty wiring of the IGC,
or rollout switch trip without a heat call.

Fault F 4 1 2 – R U N AWAY HEAT

This fault occurs when the SAT rises above the maximum SAT.
The control will enter the safety shutdown condition. This alert
will automatically reset after if configured to and the SAT falls 50
degrees below the maximum SAT. The cause of this alert is usually
heat stuck on causing high SAT, or low air flow.

Alert A510 – INDOOR FAN STATUS

This alert occurs when a fan status switch is installed, the unit is
configured not to shut down on fan status, and the fan status switch
does not match the state of the fan. The cause of this is usually a
configuration error on the switch state in the software or the setting
on the actual switch itself.

Fault F511 – IDF OFF WHEN COMMAND ON

This fault occurs when the unit is configured to shut down on fan
status and the fan is requested greater than zero and the fan status
switch indicates the fan is off. The cause of this alert is usually a
configuration error on the switch state in the software or the setting
on the actual switch itself. Manual alarm reset or power cycle is
required to reset this fault.

Fault F512 – IDF ON WHEN COMMAND OFF

This fault occurs when the unit is configured to shut down on fan
status and the fan is requested off and the fan status switch
indicates the fan is off. The cause of this alert is usually a
configuration error on the switch state in the software or the setting
on the actual switch itself. Manual alarm reset or power cycle is
required to reset this fault.

Alert A700 – ECON NOT MODULATING

This alert occurs when the economizer feedback is enabled and the
actual speed does reach the commanded speed in the economizer
travel time configuration value. This alert will automatically reset
when the actual position does reach the commanded position. This
is usually caused by installation of the wrong actuator, no
economizer gear motion, or actuator direction control switch
(CCW, CW) wrong. Check damper blades, gears, and actuator.
This alert will usually be accompanied by another descriptive
informational alert.

Alert A701 – ECON STUCK CLOSED

See alert A700

Alert A702 – ECON STUCK OPEN

See alert A700

Alert A703 – IDF MECH DISCONNECTED

This alert occurs when the Alert A700 is not active yet the control
determines that the economizer changes are not aligning with the
temperature changes. This will require a manual reset to ensure the
economizer is inspected. This is usually caused by the actuator not
properly secured to the damper shaft.

Alert A710 – ECON NOT COOLING

See alert A700

Alert A711 – ECON IMPROPER COOLING

See alert A700

Alert A712 – EXCESSIVE OUTDOOR AIR

See alert A700

31

Table12–SystemVut Controller Alarm Codes

FAULT OR ALERT

F010---MBB LOW VOLTAGE Unit Shutdown Automatic Brownout condition, low supply voltage, supply pow er missing a phase.

F011 --- MBB REFERENCE VOLTAGE Unit Shutdown Automatic MBB failure or supply voltage low

A012--- MBB ZERO CROSSING Alert Generated Automatic MBB failure or supply voltage frequency to high or too low.

F013---MBB FUSE 2 OPEN Unit Shutdo wn Automatic A switch input has a wiring error or the swit ch pulled too much current.

F014---MBB FUSE 3 OPEN Unit Shutdo wn Automatic A switch input has a wiring error or the swit ch pulled too much current.

A015 --- MBB RNET VOLTAGE RANGE Alert G enerated Automatic MBB failure or supply voltage low

A016--- MBB 24VDC RANGE 4 --- 20mA inputs will be in error Automatic MBB failure or supply voltage low

A017--- MBB 5VDC RANGE Transducer inputs will be in error Automatic MBB failure or supply voltage low

F018--- MBB EEPROM FAILURE Unit Shut down Automatic Software failure or MBB failure

A019--- MBB CLOCK FAILURE No time, date, and schedule

F020--- SOFTWARE ERROR Unit Shutdown Automatic Corrupt Software or software failure

A100 - -- SAT SENSOR ERROR No free cooling, and no SAT

A101--- FST SENSOR RANGE Alert Generated Automatic Faulty or incorrect thermistor caused by improper ohm reading

A102--- FST OPEN SENSOR Alert Generated Automatic Missing or open thermistor caused by wiring error or loose connection.

A103--- FST SHORTED SENSOR Alert Generated Automatic Faulty or short ed thermistor caused by wiring error or loose connection.

A104--- OAT SENSOR RANGE No free cooling, no low

A105--- OAT OPEN SENSOR No free cooling, no low

A106--- OAT SHORTED SENSOR No free cooling, no low

A107--- RAT SENSOR RANGE No differential DB crossover Automatic Faulty or incorrect thermistor caused by improper ohm reading

A108--- RAT OPEN SENSOR No differential DB crossover Automatic Missing or open thermistor caused by wiring error or loose connectio n.

A109--- RAT SHORTED SENSOR No differential DB crossover Automatic Faulty or shorted thermistor ca used by wiring error or loose connection.

A110 - -- SPT SENSOR RANGE No heating or cooling Automatic Faulty or incorrect thermistor caused by improper ohm reading

A111 - -- SPT OPEN SENSOR No heating or cooling Automatic Missing or open thermistor caused by wiring error or loose connectio n.

A112 - -- SPT SH ORTED SENSOR No heating or co oling Automatic Fault y or sho rted thermistor caused by wiring erro r or lo ose conne ction.

A130 --- CIR.A SSP SENSOR RANGE Shutdow n Circuit A Automatic Faulty transducer, faulty 5--- V power supply, or loose connection

A131 - -- CIR.A SSP OPEN SENSOR Shutdown Circuit A Automatic Faulty transducer, faulty 5 --- V power supply, o r loose connection

A132 - -- CIR.A SSP SHORT SENSOR Shutdown Circuit A Automatic Faulty transducer, faulty 5 --- V power supply, or loose co nnection

A133--- CIR.A SDP SENSOR RANGE Shutdown Circuit A Automatic Faulty t ransducer, fault y 5 - -- V power supply, or loose connection

A134--- CIR.A SDP OPEN SENSOR Shutdo wn Circuit A Automatic Faulty transducer, faulty 5 -- -V power supply, or loose connection

A135 - -- CIR.A SDP SHORT SENSOR Shutdown Circuit A Automatic Faulty transducer, faulty 5--- V power supply, or loose connection

A150--- OUTDOOR AIRFLOW IN CFM OPEN
SENSOR

A151--- OUTDOOR AIRFLOW IN CFM
SHORTED SENSOR

A160--- OARH OPEN SENSOR No Ent halpy crossover Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

A161--- OARH SHORTED SENSOR No Enthalpy crossover Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

A162--- RARH OPEN SENSOR No Differential Enthalpy

A163--- RARH SHORTED SENSOR No Different ial Enthalpy

A164--- IAQ OPEN SENSOR No IAQ Operatio ns Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

A165--- IAQ SHORTED SENSOR No IAQ O perations Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

A166--- OAQ OPEN SENSOR No OAQ Operatio ns Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

A167--- OAQ SHORTED SENSOR No O AQ Operations Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

A168--- SPACE RELATIVE HUMIDITY OPEN
SENSOR

A169---SPACE RELATIVE HUMIDITY
SHORTED SENSOR

A170--- ECON FEEDBACK RANGE No economizer diagnostics Automatic Wiring problem with actuator, or configuration error

A171--- ECON FEEDBACK OPEN No economizer diagnostics Automatic Wiring pro blem with actuator, or configuration erro r

A172--- ECON FEEDBACK SHORTED No economizer diagnostics Automatic Wiring problem with actua tor, or configuration error

A190 - -- TSTAT HEAT/COOL CALLS Run unit in mode a ctivated first Automatic Bad Thermosta t or Thermostat Wiring

A191--- TSTAT IMPROPER COOL Run cooling per number of

A192--- TSTAT IMPROPER HEAT Run hea ting per number of

F200--- FIRE SHUTDOWN Unit Shutdown Automatic Smoke detected by smoke detector

F201 --- CONDENSATE OVERFLOW Cooling Shutdown Automatic Dain pan plugged, sensor error, or configuration error

A203--- DIRTY FILTER Alert Generated Automatic DirtyFilterorfiltertimerexpired

F204--- REMOTE SHUTDOWN Unit Shutdown Automatic Remote activation of the shutdown switch

F205--- IDF MANUAL LIMIT TRIP Unit Shutdown Automatic LimitSwitchonIndoorFantripsduetohightemperatureatthemotor

F206--- PHASE MONITOR TRIP Unit Shutdown Automatic Power supply phase missing or out of pha se

ACTION TAKEN BY

CONTROL

operation

limit protection

ambient operation

ambient operation

ambient operation

No OACFM Opera tions Automatic Wiring problem, or configuration error

No OACFM Opera tions Automatic Wiring problem, or configuration error

crossover

crossover

No dehumidifying Automatic Bad sensor, bad wiring, sensor configured incorrectly, loss of communication

No dehumidifying Automatic Bad sensor, bad wiring, sensor configured incorrectly, loss of communication

active inputs

active inputs

RESET

METHOD

Automatic Software failure or MBB failure

Automatic Faulty, shorted, or open thermistor caused by w iring error or loose connection.

Automatic Faulty or incorrect thermistor caused by improper ohm reading

Automatic Missing or open thermistor caused by wiring error or loose connection.

Automatic Faulty or shorted thermistor caused by wiring error or loose connection.

Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

Automatic Bad sensor, bad wiring, or sensor configured incorrectly.

to SIOB.

to SIOB.

Automatic Bad Thermostat or Thermost at Wiring

Automatic Bad Thermostat or Thermost at Wiring

PROBABLE CAUSE

32

Table 12 — SystemVut Controller Alarm Codes (cont)

FAULT OR ALERT

A210--- GENERAL STATUS Alert Generated Automatic General Switch activation or wrong configuration

F211--- GENERAL STATUS Unit Shutdo wn Automatic General Switch act ivation or wrong configuratio n

F310 --- CIRA DOWN DUE TO FAIL Shutdow n Circuit A Manual Compressors have 3 strikes or has been locked out by another alarm

F311--- CIRA LOW CHARGE Shutdown Circuit A Manual Low refrigerant or faulty pressure transducer

A312--- CIR.A UNEXPECTED OFF Strike for active compressors Automatic Compressor failure, transducer failure , or nuisance operating co nditions

A313---CIR.A HIGH DISCHARGE Unload compression and up

A314--- CIR.A HPS TRIP Add compresso r strikes Automatic An overcharged system, high outdoor ambient temperature coupled with

A315--- CIR.A LOW DISCHARGE Add compressor strikes Automatic An undercharged system, low outdoor ambient tempe rature coupled with

A316--- CIR.A LOW SUCTION Add co mpressor strike s Automatic Low refrigerant charge, dirty filters, evapora tor fan turning backwards, loose

A317---CIR.A PRESSURE RATIO Add compressor strikes Automatic Low refrigerant charge, plugged filter drier, faulty transducer, the ambient

F318--- COMPRESSOR STUCK ON Unit in Safety Shutdown Manual WeldedcontactororfrozencompressorrelayonMBB

F319 --- C.A1 DOWN DUE TO FAIL Lockout Compressor A1 Manual Compressor A1 has 3 strikes or has been locked out by another alarm

A320--- C.A1 REVERSE ROTATION Add St rike for compressor A1 Automatic Wiring causing reverse rotat ion or faulty compresso r

A321--- C.A1 FAIL TO PRESSURE Add Strike fo r compressor A1 Automatic Wiring causing reverse rotatio n or faulty compressor

A410---IGC IGNITION FAILURE Lockout Heat Automatic Faulty wiring of the IGC, no gas flow, or wrong configuration

F411--- ROLLOUT WITHOUT HEAT Unit in Safety Shutdown Automatic Faulty wiring of the IGC, or rollout switch trip without a heat call

F412--- RUN AWAY HEAT Unit in Safety Shutdown Automatic Heat stuck on causing high SAT, or low air flow

A510--- INDOOR FAN STATUS Alert Generated Automatic Motor failure, or configuration error.

F511--- IDF OFF WHEN COMMAND ON Unit Shutdown Manual Fan stuck on, or Configuration incorrect.

F512---IDFONWHENCOMMANDOFF Unit Shutdown Manual Tripped Circuit Breaker. Bad indoor fan motor. Configuration incorrect.

A700--- ECON NOT MODULATING Alert Generated Automatic No economizer motion. Check damper blades, gears, and actuator. Actuator

A701 - -- ECON STUCK CLOSED Alert Generated Automatic No economizer motion. Check damper blades, gears, and actuator. Actuator

A702--- ECON STUCK OPEN Alert Generated Automatic No economizer motion. Check damper blades, gears, and actuator. Actuator

A703--- ECON MECH DISCONNECTED Alert Generated Manual No economizer motion. Check damper blades, gears, and actuator. Actuator

A710--- ECON NOT COOLING Alert Generated Automatic No economizer motion. Check damper blades, gears, and actuator. Actuator

A711--- ECON IMPROPER COOLING Alert Generated Automatic No economizer motion. Check damper blades, gears, and actuator. Actuator

A712--- EXCESSIVE OUTDOOR AIR Alert Generated Automatic No economizer motion. Check damper blades, gears, and actuator. Actuator

ACTION TAKEN BY

CONTROL

ODF to High cool speed

RESET

METHOD

Automatic An overcharged system, high outdoor ambient temperature coupled with

dirty outdoor coil, plugged filter drier, or ODF speed too low.

dirty outdoor coil, plugged filter drier, or ODF speed too low.

dirty outdoor coil, plugged filter drier, or ODF speed too high

or broken fan belt, plugged filter drier, faulty transducer, excessively cold
return air, or stuck open economizer when the ambient temperature is low.

temperature is low and the ODF is running t oo fast.

direction control switch (CCW, CW) wrong.

direction control switch (CCW, CW) wrong.

direction control switch (CCW, CW) wrong.

direction control switch (CCW, CW) wrong.

direction control switch (CCW, CW) wrong.

direction control switch (CCW, CW) wrong.

direction control switch (CCW, CW) wrong.

PROBABLE CAUSE

33

Control Module Communication

Red LED

Proper operation of the MBB control board can be visually
checked by looking at the red status LED. When operating
correctly, the red status LED should blink at a rate of once every 2
seconds. If the red LED is not blinking, verify that correct power is
being supplied. A blinking red LED at the rate of once per second
means that software is not loaded on the board. Also, be sure that
the board is supplied with the current software. If necessary, reload
current software. A board LED that is lit continuously should be
replaced.

Green LED

The MBB has one green LED. The Local Equipment Network
(LEN) LED should always be blinking whenever power is on. If
LEN LED is not blinking, check LEN connections for potential
communication errors (MBB J15, J16, J17, and on the Display J2).
Communication between modules is accomplished by a 3--wire
sensor bus. These 3 wires run in parallel from module to module.
The MBB J17 and Display J2 connectors provide both power and
communication directly at the connector for accessories like the

Table 13 – Communication Resistances

(LEN) Resistance between Pins /

Device

MBB 19.92 KΩ 10.63 KΩ 9.51 KΩ 19.92 KΩ 10.63 KΩ 9.51 KΩ 2.25 KΩ 1KΩ 3.3 KΩ

Pins

1to3

Connector

Pins

1to2

Pins

2to3

(BAS) Resistance between Pins /

Pins

1to3

Navigatort display. The MBB J15 connector provides a LEN
interface to the indoor fan VFD.

Yellow LED

The MBB has one yellow LED which is used to indicate Building
Automated System (BAS) communication activity. The LED will
blink when the MBB transmits a message on the bus.

Communication Failures

If the Indoor Fan VFD or Navigator display Communication
Failure or the green or yellow LED’s do not flash on the boards
then the problem could be the communication chip on one of the
control boards (MBB). Use an ohm meter to measure the resistance
on the communication pins of the boards to determine if the board
is bad. If the reading is less then half the value indicated in Table
13, then the board needs to be replaced.

IMPORTANT: The resistive values should be read when the
board is powered off, the unit is locked out, and board
connectors are disconnected.

Connector

Pins

1to2

Pins

2to3

(RNET) Resistance between Pins /

Pins

GND to +

Connector

Pins

GND to –

Pins

+to–

34

Cooling Troubleshooting

Use the Sy stemVut Display or a CCN device to view the cooling
status display and the cooling diagnostic display (see Appendices)
for information on the cooling operation. Check the current alarms
and alarm history for any cooling alarm codes and correct any
causes. (See Table 12.) Verify any unique control configurations
per installed site requirements or accessories.

Table 14 – Cooling Service Analysis

PROBLEM CAUSE REMEDY

Compressor and Fan Will Not
Start.

CompressorCycles(otherthan
normally satisfying thermostat).

Compressor Operates
Continuously.

Excessive Condenser Pressures.

Condenser Fans Not Operating. No Power to contactors. Fuse blown or plug at motor loose.

Excessive Suction Pressure.

Suction P ressure Too Low.

LEGEND
TXV --- Thermostatic Expansion Valve

Power failure. Call power company.

Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Disconnect off. Power disconnect.

Compressor time guard to prevent short cycling. Check using SystemVu Display.

Thermostat or occupancy schedule set point not
calling for Cooling.

Outdoor temperature too low. Check Compressor Lockout Temperature using

Active alarm. Check active alarms using SystemVu Scrolling

Insufficient line voltage. Determine cause and correct.

Active alarm. Check active alarms using SystemVu Scrolling

Unit undersized for load. Decrease load or increase size of unit.

Thermostat or occupancy schedule set point too low. Resetthermostatorschedulesetpoint.

Dirty air filters. Replace filters.

Low refrigerant charge. Check pressure, locate leak, repair, evacuate, and

Condenser coil dirty or restricted. Clean coil or remove restriction.

Dirty condenser coil. Clean coil.

Refrigerant overcharge. Recover excess refrigerant.

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to

Condenser air restricted or air short cycling. Determine cause and correct.

Restrictioninliquidtube. Remove restriction.

High heat load. Check for sources and eliminate

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to

Refrigerant overcharged. Recover excess refrigerant.

Dirty air filters. Replace air filters.

Low refrigerant charge. Check pressure, locate leak, repair, evacuate, and

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to

Insufficient evaporator airflow. Check belt tension. Check for other restrictions.

Temperature too low in conditioned area (low
return-air temperature).

If alarms conditions are corrected and cleared, operation of the
compressors and fans may be verified by using the Service Test
mode. (See Table 4.) See Table 14 for general cooling service
analysis.

Check using SystemVu Display.

SystemVu Display.

Marquee.

Marquee.

recharge.

suction line and insulate.

2. Replace TXV (and filter drier) if stuck open or
closed.

suction line and insulate.

2. Replace TXV (and filter drier) if stuck open or
closed.

recharge.

suction line and insulate.

2. Replace TXV (and filter drier) if stuck open or
closed.

Reset thermostat or occupancy schedule.

35

Humidi--MiZerRSystem Troubleshooting

Use the SystemVut control display or a CCN device to view the
cooling status display and the cooling diagnostic display. See
Optional Humidi--MiZer Dehumidification System starting on
page 17 for information on the cooling operation and the related
Humidi--MiZer system operation. Check the current alarms and
alarm history for any cooling alarm codes and correct any causes
(see Table 12 on page 32). Verify any unique control
configurations per installed site requirements or accessories.

Table 15 – Humidi--MiZer System Service Analysis

PROBLEM CAUSE REMEDY

Subcooling Reheat Mode
Will Not Activate.

Hot Gas Reheat Mode
Will Not Activate.

No Dehumidification Demand.

CLV or RLV Valve Operation.

RDV Valve Operation.
(NOTE: Normally Closed
When De-energized)

Low Sensible Capacity in Normal Cool
or Subcooling Reheat Modes.

Low Suction Pressure and High
Superheat During Normal Cool Mode.

RDV Valve Cycling On/Off.

LEGEND
CLV --- Cooling Liquid Valve
IOB --- I n p u t --- O u t p u t B o a r d
LDV --- L i q u i d D i v e r t e r V a l v e
RDV --- Reheat Discharge Valve
RLV --- R e h e a t L iq u i d V a l v e
RH --- Relative Humidity

General cooling mode problem. See Cooling Service Analysis (Table 14).

No dehumidification demand. See No Dehumidification Demand, below.

Circuit CLV or RLV valve problem. See CLV or RLV Valve Operation, below.

General cooling mode problem. See Cooling Service Analysis (Table 14).

No dehumidification demand. See No Dehumidification Demand, below.

CLV or RLV valve problem. See CLV or RLV Valve Operation, below.

Circuit RDV valve is not open. SeeRDVValveOperation,below.

Outdoor temperature too low.

Relative humidity setpoint is
too low — Humidistat

Relative humidity setpoint is
too low — RH sensor.

Software configuration error
for accessory humidistat.

Software configuration error
for acce ssory humidity sensor.

No humidity signal. Check wiring. Check humidistat or humidity sensor.

No 24V signal to input terminals.

Solenoid coil burnout.

Stuck valve. Replace valve. Replace filter drier.

No 24V signal to input terminals.

Solenoid coil burnout.

Stuck valve. Replace valve. Replace filter drier.

RDV valve open or leaking. SeeRDVValveOperation,above.

General cooling mode problem. See Cooling Service Analysis (Table 14).

RDV valve open or leaking. SeeRDVValveOperation,above.

Hot Gas Reheat mode low suction pressure limit.

If alarm conditions are corrected and cleared, operation of the
compressors, fans, and Humidi-MiZer system valves may be
verified by using the Service Test mode (see Table 4 on page 11).
In addition to general cooling service analysis (Table 14 on page

35), see Table 15 (below) for general Humidi-MiZer system service
analysis.

NOTE: Wiring, operation, and charge are different on a
Humidi-MiZer system unit compared to a standard unit.

Check Reheat Circuit Limit Temperatures
Unit ConfigurationsCoolingHumz Lockout OAT

Check/reduce setting on accessory humidistat.

Check Space RH Setpoint s (SetpointsSPRH)

Check Space Humidity Switch (SETTINGSUNIT CONFIGURATIONS



SWITCH INPUTS CONFIGSHUMSTAT CHANNEL)

Check RH Sensor (SETTINGSUNIT CONFIGURATIONSANALOG
INPUTS CONFIGSSPRH SENSOR CHANNEL)

Check using Service test mode

Check Wiring.

Check transformer and circuit beaker or fuses.

Check continuous over-voltage is less than 10%.

Check under-voltage is less than 15%.

Check for missing coil assembly parts.

Check for damaged valve enclosing tube.

Check using Service test mode

Check wiring.

Check transformer and circuit breaker or fuses.

Check continuous over-voltage is less than 10%.

Check under-voltage is less than 15%.

Check for missing coil assembly parts.

Check for damaged valve enclosing tube.

Normal Operation During Mixed Circuit Subcooling and Hot Ga s Reheat
Modes at Lower Outdoor Temperatures.

36

Economizer Troubleshooting

Use the SystemVut Display to view the economizer status. Check
the current alerts and faults and the alarm history for economizer
specific alerts or any relevant faults or alerts and correct those
issues. Use test mode to troubleshoot by ramping the economizer
up and down with and without the indoor fan and power exhaust
fan on. Inspect the mechanical economizer for actuator, gear, or
blade damage. Ensure the actuator is mounted with the correct
spring return (close damper when no power applied to unit).
Ensure there is a 500 ohm resister across the actuator as the
4--20mA output signal must be converted to 2--10V.

Feedback from the actuator is a 2 to 10 volt feedback. If the
feedback does not reach 2 volts when commanded to 0% a negative
trim (ECO FEEDBACK TRIM in the Service Calibration menu) can
be put on the feedbac k to stop Economize r alarms occurring at 0%. If
this done t he max damper position (ECON MAX POS in the

Table 16 – Economizer Service Analysis

PROBLEM POSSIBLE CAUSE REMEDY

Damper Does Not Move. Indoor Fan is off.

Actuator is unplugged at mot or or at
economizer board.

Unit is not configured for economizer. Configure unit for economizer per the

Outdoor-air temperature is above economizer
high temperature lockout.

Outdoor-air temperature is below economizer low
temperature lockout.

Communication loss to economizer board. Check wiring connections.

Damper is jammed. Identify the obstruction and safely remove.

Economizer Operation is Limited
to Minimum Position.

Economizer Position is Less
Than Minimum Position.

Economizer Does Not Return
to Minimum Position.

Damper Does Not Close on
Power Loss.

Economizer is Not at Configured
Minimum Position

LEGEND
CCN --- Carrier Comfort Network
IAQ --- I n d o o r A i r Q u a l i ty

Minimum position is set incorrectly. Adjust minimum position setting.

Outdoor-air temperature is above economizer
high temperature lockout.

Outdoor-air temperature is below economizer
low temperature lockout.

Enthalpy or differential dry bulb are preventing free
cooling.

Outdoor-air thermistor is faulty. Replace outdoor-air thermistor.

Low suction pressure problem with a compressor. Economizer is operating correctly, identify

IAQ is controlling minimum damper position. Adjust the IAQ settings if incorrect,

Unit is in Unoccupied mode. Adjust unit occupied schedule if incorrect,

Unit is operating under free cooling. Economizer is operating correctly.

Damper is jammed or spring return is backwards. Identify the obstruction and safely remove.

Unit is operating under free cooling or a force is
applied to the commanded position.

R

Economizer Settings menu) must be set less than 100% to prevent
Economizer alarms at 100% since the trimmed value will not reach
100% at 10 Volts. Both signals can be measured with a meter on
the signal and feedback wires J7 pins 4 and 3 respectively and
referenced to ground J7 pin 8 while the values can be displayed on
the local display.

The Economizer alerts can be summarized as a failure to modulate
the damper blades. This can be due to the actuator not being
properly connected to the damper, or because the actuator’s
feedback signal is indicating that damper is not performing as
commanded. The mechanical disconnect diagnostic will run when
conditions are appropriate to determine proper air temperature
changes. This uses the OAT, RAT, and SAT to tell if the damper is
mixing the outdoor air with the return air. The other alerts inform
where the damper is stuck relative to the commanded position.

Check for proper thermostat connection.

Unit is not configured for continuous fan
operation and the thermostat is not calling for
heating or cooling.

Unit is in Unoccupied mode and there is no
call for heating or cooling.

Tripped circuit breaker.

No power to the unit.

Unit is off via CCN comman d.

Check wiring connections.

instructions.

Adjust the high temperature lockout setting
if it is incorrect, otherwise, economizer is
operating correctly.

Adjust the low temperature lockout setting
if it is incorrect, otherwise, economizer is
operating correctly.

Adjust the high temperature lockout setting
if it is incorrect, otherwise, economizer is
operating correctly.

Adjust the low temperature lockout setting if it is
incorrect, otherwise, economizer is operating
correctly.

Check enthalpy and return air compared to
outside air temperature.

compressor problem.

otherwise, the economizer is operating correctly.

otherwise, economizer is operating correctly.

Economizer is operating correctly.

37

Heating Troubleshooting

Use the unit SystemVut Display or a CCN device to view the
heating status display and the heating diagnostic display (see
Appendices) for information on the heating operation. Check the
current alarms and alarm history for any heating alarm codes and
correct any causes. (See Table 12.) Verify any unique control
configurations per installed site requirements or accessories. If
alarms conditions are corrected and cleared, operation of the heat
stages and indoor fan may be verified by using the Service Test
mode. (See Table 4.)

Table 17 – Gas Heating Service Analysis

PROBLEM CAUSE REMEDY

Heat Will Not Turn On. Unit is NOT configured for heat. Check heating configurations using the SystemVu Display

Active alarm. Check active alarms using SystemVu Display and the IGC flash

No power to unit. Check power supply, fuses, wiring, and circuit breakers.

No power to IGC (Integrated Gas Control). Check fuses and plugs.

Heaters off due to time guard to prevent short

Burners Will Not Ignite.

Inadequate Heating.

Poor Flame
Characteristics.

Burners Will Not Turn Off.

cycling.

Thermostat or occupancy schedule set point not
calling for Cooling.

No gas at main burners. Check gas line for air and purge as necessary. After purging gas

Water in gas line. Drain w ater and install drip.

Dirty air filters. Replace air filters.

Gas input too low. Check gas pressure at manifold. Refer to gas valve adjustment.

Thermostat or occupancy schedule set point only
calling for W1.

Unit undersized for load. Decrease load or increase of size of unit.

Restricted airflow. Remove restriction. Check SAT compared to the SAT heating

Too much outdoor air. Check economizer position and configuration. Adjust minimum

Limitswitchcyclesmainburners. Check rotation of blower, thermostat heat anticipator settings,

Incomplete combustion (lack of combustion air)
results in: Aldehyde odors, CO, sooting flame, or
floating flame.

Unit is in Minimum on-time. Check using SystemVu Display and the IGC flash codes.

Unit running in Service Test mode. Check using SystemVu Display.

Main gas valve stuck. Turn off gas supply and unit power. Replace gas valve.

Gas Heat (48FC and 48GC Units)

See Table 17 for general gas heating service analysis. See Fig. 19
for service analysis of the IGC board logic. Check the status LED
on the IGC board for any flashing alarm codes and correct any
causes. (See Table 18.)

Electric Heat (50FC and 50GC Units)

See Table 19 for electric heating service analysis.

codes.

Check using SystemVu Display and the IGC flash codes.

Check using SystemVu Display.

line of air, allow gas to dissipate for at least 5 minutes before
attempting to re-light unit.

Allow time for W2 to energize or adjust setpoints.

limits.

position using SystemVu Display.

and temperature rise of unit. Adjust as needed.

Check all screws around flue outlets and burner compartment.
Tighten as necessary.

Cracked heat exchanger, replace.

Unit is over-fired, reduce input. Adjust gas line or manifold
pressure.

Check vent for restriction. Clean as necessary.

Check orifice to burner alignment.

38

1 FLASH - INDOOR FAN DELAY

MODIFIED (HEATING)

2 FLASHES - OPENING OF LIMIT

5 FLASHES - IGNITION LOCKOUT

SWITCH

3 FLASHES - FLAME SENSOR

INDICATES FLAME WITH

CLOSED GAS VALVE

4 FLASHES - LIMIT SWITCH

CYCLED 4 TIMES ON SINGLE

CALL FOR HEAT

(No ignition within 15 minutes)

6 FLASHES - INDUCED DRAFT

MOTOR FAULT

(No signal from the Flue Gas

Pressure Switch or 60 seconds)

7 FLASHES - OPENING OF

ROLLOUT SWITCH

8 FLASHES - HARDWARE OR

SOFTWARE FAULT

9 FLASHES - SOFTWARE

LOCKOUT

FLASHING

LED is

ON

CALL FOR

COMBUSTION RELAY ENERGIZES INDUCED DRAFT MOTOR (IDM) THROUGH

IF IDM IS TURNING AT CORRECT SPEED (AT LEAST 2400 RPM), FLUE GAS

PRESSUE SWITCH SENDS CORRECT SIGNAL TO TERMINAL ‘J1’ ON IGC

IF LIMIT SWITCH AND ROLLOUT

SWITCH ARE CLOSED, IGC SAFETY

LOGIC WILL INITIATE IGNITION

OFF

HEATING

‘W1’ FROM BASE CONTROL BOARD ENERGIZES ‘W’
ON IGC - 1 MINUTE LOCK-ON

COMBUSTION RELAY ON IGC IN ENERGIZED

TERMINAL ′CM′ ON IGC

SEQUENCE

24 VOLTS

BETWEEN

F1 AND C

1. BLOWN 5 AMP FUSE

2. DEFECTIVE 24V TRANS.

3. BROKEN WIRE

4. NO POWER TO UNIT

YES

No

DEFECTIVE
IGC BOARD

No

LEGEND

IDM – Induced-Draft Motor
IGC – Integrated Gas Unit Controller

IGC SAFETY LOGIC WILL SHUT

OFF GAS VALVE AND SPARK

20 SECOND PURGE OF HEAT

EXCHANGER

IS THIS THE

33RD RETRY? (OR 15

MINUTES)

Yes

IGNITION LOCKOUT

(5 FLASHES OF LED)

IGC HIGH VOLTAGE

TRANSFORMER CREATES A

10,000 VOLT SPARK FOR 5

SECONDS

No

AFTER 45 SECONDS (OR LESS IF THE TIMING

HAS BEEN REDUCED DUE TO LIMIT SWITCH

TRIPS) IGC WILL ENERGIZE BLOWER RELAY

IDM STOPS, SAFETY LOGIC SHUTS OFF GAS VALVE

IGC SAFETY LOGIC OPENS GAS

DOES IGC DETECT

.2 MICROAMPS FOR 2

SECONDS

Yes

DID LIMIT

SWITCH OPEN BEFORE THE 45

SECONDS (OR THE MODIFIED

TIME) HAS TIMED OUT?

No

NORMAL HEATING OPERATION

HEATING DEMAND SATISFIED

VALVE FOR 5 SECONDS

Yes

SUBTRACT 5 SECONDS FROM

INDOOR FAN ON TIME DELAY

NOTE: Thermostat Fan Switch in the
“AUTO” position.

(DELAY EXTENDED BY 5 SECONDS FOR EACH LIMIT SWITCH TRIP

45 SECOND BLOWER SHUTOFF DELAY

MAXIMUM DELAY: 3 MINUTES)

Fig. 19 -- IGC Service Analysis Logic

39

a48--- 9375

Table 18 – IGC Board LED Alarm Codes

LED

FLASH

DESCRIPTION

CODE

On Normal Operation

Off Hardware Failure No gas heating.

1Flash Indoor Fan On/Off Delay

Modified

2Flashes Limit Switch Fault Gas valve and igniter Off.

3Flashes Flame Sense Fault Indoor fan and inducer On. Flame sense normal.

4Flashes Four Consecutive Limit

Switch Fault

5Flashes Ignition Fault No gas heating. Heat call (W) Off.

6Flashes Induced Draft Motor

Fault

7Flashes Rollout Switch Lockout Gas valve and igniter Off.

8Flashes Internal Control Lockout No gas heating. Power reset. IGC has sensed internal hardware or software error. If

9Flashes Temporary Software

LEGEND
IGC - -- Integrated Gas Unit Control
LED --- L i g h t --- E m it t i n g D i o de

Lockout

ACTION TAKEN BY

CONTROL

RESET METHOD PROBABLE CAUSE

— — —

—

5 seconds subtracted from
On delay.
5 seconds added to Off
delay (3 min max).

Indoor fan and inducer On.

No gas heating. Heat call (W) Off.

If heat off: no gas heating.
If heat on: gas valve Off
and inducer On.

Indoor fan and inducer On.

No gas heating. 1 hour auto reset, or

Power reset. High temperature limit switch opens during heat

Limit switch closed, or
heat call (W) Off.

Power reset for LED
reset.

Power reset for LED
reset.

Power reset for LED
reset.

Inducer sense normal, or
heat call (W) Off.

Power reset. Rollout switch has opened. Check gas valve

power reset.

NOTES:

1. Ther e is a 3 ---second pause between alarm code displays.

2. If more than one alarm code exists, all applicable alarm codes will be
displayed in numerical sequence.

3. Alarm codes on the IGC will be lost if power to the unit is interrupted.

Loss of power to the IGC. Check 5 amp fuse on IGC,
power to unit, 24V circuit breaker, transformer, and
wiring to the IGC.

exchanger warm-up period before fan-on delay
expires.
High temperature limit switch opens within
10 minutes of heat call (W) Off.
See Limit Switch Fault.

High temperature limit switch is open. Check the
operation of th e indoor (evaporator) fan motor.
Ensure that the supply-air temperature rise is within
the range on the unit nameplate. Check wiring and
limit switch operation.

TheIGCsensedaflamewhenthegasvalveshould
be closed. Check wiring, flame sensor, and gas valve
operation.

4 consecutive limit switch faults within a single call for
heat. See Limit Switch Fault.

Unit unsuccessful ly attempted ignition for 15 minutes.
Check igniter and flame sensor electrode spacing, gaps,
etc. Check flame sense and igniter wiring. Check gas
valve operation and gas supply.

Inducer sense On when heat call Off, or inducer
sense Off when heat call On. Check wiring, voltage,
and operation of IGC motor. Check speed sensor
wiring to IGC.

operation. Check induced-draft blower wheel is
properly secured to motor shaft.

fault is not cleared by resettin g 24 v power, replace
the IGC.

Electrical interference is disrupting the IGC software.

PROBLEM CAUSE REMEDY

Heat Will Not Turn On.

Inadequate Heating.

Heat Will Not Turn Off.

Table 19 – Electric Heat Service Analysis

Active al arm. Check active alarms using SystemVu™ Display.

Unit is NOT configured for heat. Check heating configurations using the SystemVu Display

No power to unit. Check power supply, fuses, wiring, and circuit breakers.
Unit is in minimum h eat off-time, or min imum cool-heat

changeover time.

Thermostat or occupancy schedule setpoint not
calling for heating.

Heat forced off in Service Test mode. Check usin g SystemVu Display. Turn Service Test mode off.

No 24 VAC at heater contactor.

Open temperature limit switch on heater. Check minimum airflow. Check limit switch when it is cool,

Dirty air filters. Replace air filters.

Thermostat or occupancy schedule setpoint only
calling for W1.

Heat undersized for load. Decrease load or increase size of heater.

Restricted airflow Remove restriction. Check SAT compared to the SAT

Too much outdoor air. Check economizer position and configuration. Adjust

Limit switch cycles heaters. Check rotation of blower and minimum airflow.

Bad heater elements. Power off unit and remove high voltage wires. Check

Unit is in minimum h eat on-time. Check using SystemVu Display.

Thermostat or occupancy schedule setpoint still
calling for heating.

Heat forced on in Service Test mode. Check using SystemVu Display. Turn Service Test mode off.

Heater contactor failed. Power off unit. Check contactor and replace if closed.

Check using SystemVu D isplay.

Check using SystemVu D isplay.

Check transformer and circuit breaker.

Check auto-reset limit switches on heater.

Check manual-reset limit switch (LS) on indoor fan housing.

replace if open.

Allow time for W2 to energize or adjust setpoints.

heating limits.

minimum position.

resistance of element, replace if open.

Check using SystemVu D isplay.

40

Phase Protection

The phase loss protection option will monitor the three-phase electrical
system to provide phase revers al and phase loss protection.

Phase Reversal Protection

If the control senses an incorrect phase relationship, the relay (K1)
will be de-energized (opening its contact). If the phase relationship
is correct, the relay will be energized. The control has a self-bypass
function after a pre-set time. If the control determines that the three
phases stay in a correct relationship for 10 consecutive minutes, the
relay will stay energized regardless of the phase sequence of three
inputs as long as 24-VAC control voltage is applied. This
self-bypass function will be reset if all three phases are restored in a
phase loss event.

Phase Loss Protection

If the reverse rotation board sens es any one of the three phase inputs
has no AC volta ge, the relay will be de--energiz ed (opening its
contact). This protecti on is always active as long as 24-VAC control
voltage is applied, and is not affected by the self by-pass functi on of
the phase sequence monitor ing function. However, in the event of
phase loss, the relay will be re-ene rgized only if all three phases are
restored and the three phases are in the correct sequenc e.

A red LED is provided to indicate the function of the board. See
the table below.

LED STATUS FUNCTION

On Continuously Relay contact closed (normal operation).

Blinking

Off 24---VAC control power not present (off).

Relay contact open (phase loss or phase
reversal has occurred) — No power will be
supplied to the control system.

Thermistor Troubleshooting

The SystemVut controller uses thermistors to sense temperatures
used to control operation of the unit. Resistances at various
temperatures are listed in T able 20. Thermistor pin connection
points are shown in the Major System Components section. The
general locations of the thermistors are shown the Major System
Components section.

Air Temperatures

Air temperatures are measured with 10K thermistors. This includes
supply-air temperature (SAT), outdoor-air temperature (OAT),
space temperature sensors (T55, T56, T59), and return air
temperature (RA T).

The supply air temperature (SAT) and outdoor air temperature
(OAT) thermistors use a snap-mount to attach through the unit
sheet metal panels. The snap-mount tabs must be flattened on the
tip end of the sensor to release for removal from the panel. (See
Fig. 20.) To reinstall, make sure the snap-mount tabs extend out.

Thermistor/Temperature Sensor Check

A digital volt-ohmmeter is required to perform this check.
Connect the digital volt--ohmmeter across the appropriate

thermistor terminals at the J8 connector on the Main Base Board
(see Major System Components section).

Using the voltage reading obtained, read the sensor temperature
from Table 20 (on page 42).

To check thermistor accuracy, measure temperature at
probe location with an accurate thermocouple-type
temperature-measuring instrument. Insulate thermocouple to avoid
ambient temperatures from influencing reading. Temperature
measured by thermocouple and temperature determined from
thermistor voltage reading should be close, within 5F if care was
taken in applying thermocouple and taking readings.

If a more accurate check is required, unit must be shut down and
thermistor removed and checked at a known temperature (freezing
point or boiling point of water) using either voltage drop measured
across thermistor at the J8 connector, or by determining the
resistance with unit shut down and thermistor disconnected from
J8. Compare the values determined with the value read by the
control in the Temperatures mode using the SystemVut display.

Sensor Trim

Corrective offsets can be applied to all the analog inputs. Trim can
be used as a form of calibration. The trim works by adding or
subtracting the specified amount on the specified analog input.
These corrections should only be use when a proper calibrated tool
is used to compare to the sensors reading. These corrections are
only applied to the local sensor values, a building systems (BAS)
communicating values will not account for these corrections. Use
the SERVICE  CALIBRATION menu on the SystemVu Displa y to
adjust these values.

Transducer Troubleshooting

The electronic control uses suction and discharge pressure
transducers to measure the pressure of the refrigerant circuits. The
pressure/voltage characteristics of these transducers are in shown in
Table 21 (on page 43) for suction transducers and Table 22 (on
pages 44--45) for discharge transducers. The 5vdc power is applied
to legs A and B of the transducer and legs B to C represent the
signal voltage. To use the voltage drop table for troubleshooting,
read the voltage across A and B, then subtract the voltage reading
from B to C. The voltage drop can be looked up in Table 21 and
Table 22 depending on the type of transducer. The accuracy of
these transducers can be verified by connecting an accurate
pressure gauge to the second refrigerant port in the suction and
discharge lines.

Fig. 20 -- SAT and OAT Thermistor Mounting

C07015

41

Table 20 – Temperature (_F) vs Resistance/Voltage Drop Value s for OAT, RAT, SAT, and SPT Thermistors (10K at 25_C Type II Resistors)

TEMP

(F)
–25 196,453 4.758 59 15,714 3.056 143 2,343 0.949
–24 189,692 4.750 60 15,317 3.025 144 2,297 0.934
–23 183,300 4.741 61 14,925 2.994 145 2,253 0.919
–22 177,000 4.733 62 14,549 2.963 146 2,209 0.905
–21 171,079 4.724 63 14,180 2.932 147 2,166 0.890
–20 165,238 4.715 64 13,824 2.901 148 2,124 0.876
–19 159,717 4.705 65 13,478 2.870 149 2,083 0.862
–18 154,344 4.696 66 13,139 2.839 150 2,043 0.848
–17 149,194 4.686 67 12,814 2.808 151 2,003 0.835
–16 144,250 4.676 68 12,493 2.777 152 1,966 0.821
–15 139,443 4.665 69 12,187 2.746 153 1,928 0.808
–14 134,891 4.655 70 11,884 2.715 154 1,891 0.795
–13 130,402 4.644 71 11,593 2.684 155 1,855 0.782
–12 126,183 4.633 72 11,308 2.653 156 1,820 0.770
–11 122,018 4.621 73 11,031 2.622 157 1,786 0.758
–10 118,076 4.609 74 10,764 2.592 158 1,752 0.745

–9 114,236 4.597 75 10,501 2.561 159 1,719 0.733

–8 110,549 4.585 76 10,249 2.530 160 1,687 0.722

–7 107,006 4.572 77 10,000 2.500 161 1,656 0.710

–6 103,558 4.560 78 9,762 2.470 162 1,625 0.699

–5 100,287 4.546 79 9,526 2.439 163 1,594 0.687

–4 97,060 4.533 80 9,300 2.409 164 1,565 0.676

–3 94,020 4.519 81 9,078 2.379 165 1,536 0.666

–2 91,019 4.505 82 8,862 2.349 166 1,508 0.655

–1 88,171 4.490 83 8,653 2.319 167 1,480 0.645

0 85,396 4.476 84 8,448 2.290 168 1,453 0.634
1 82,729 4.461 85 8,251 2.260 169 1,426 0.624
2 80,162 4.445 86 8,056 2.231 170 1,400 0.614
3 77,662 4.429 87 7,869 2.202 171 1,375 0.604
4 75,286 4.413 88 7,685 2.173 172 1,350 0.595
5 72,940 4.397 89 7,507 2.144 173 1,326 0.585
6 70,727 4.380 90 7,333 2.115 174 1,302 0.576
7 68,542 4.363 91 7,165 2.087 175 1,278 0.567
8 66,465 4.346 92 6,999 2.059 176 1,255 0.558

9 64,439 4.328 93 6,838 2.030 177 1,233 0.549
10 62,491 4.310 94 6,683 2.003 178 1,211 0.540
11 60,612 4.292 95 6,530 1.975 179 1,190 0.532
12 58,781 4.273 96 6,383 1.948 180 1,169 0.523
13 57,039 4.254 97 6,238 1.921 181 1,148 0.515
14 55,319 4.235 98 6,098 1.894 182 1,128 0.507
15 53,693 4.215 99 5,961 1.867 183 1,108 0.499
16 52,086 4.195 100 5,827 1.841 184 1,089 0.491
17 50,557 4.174 101 5,698 1.815 185 1,070 0.483
18 49,065 4.153 102 5,571 1.789 186 1,052 0.476
19 47,627 4.132 103 5,449 1.763 187 1,033 0.468
20 46,240 4.111 104 5,327 1.738 188 1,016 0.461
21 44,888 4.089 105 5,210 1.713 189 998 0.454
22 43,598 4.067 106 5,095 1.688 190 981 0.447
23 42,324 4.044 107 4,984 1.663 191 964 0.440
24 41,118 4.021 108 4,876 1.639 192 947 0.433
25 39,926 3.998 109 4,769 1.615 193 931 0.426
26 38,790 3.975 110 4,666 1.591 194 915 0.419
27 37,681 3.951 111 4,564 1.567 195 900 0.413
28 36,610 3.927 112 4,467 1.544 196 885 0.407
29 35,577 3.903 113 4,370 1.521 197 870 0.400
30 34,569 3.878 114 4,277 1.498 198 855 0.394
31 33,606 3.853 115 4.185 1.475 199 841 0.388
32 32,654 3.828 116 4,096 1.453 200 827 0.382
33 31,752 3.802 117 4,008 1.431 201 814 0.376
34 30,860 3.776 118 3,923 1.409 202 800 0.370
35 30,009 3.750 119 3,840 1.387 203 787 0.365
36 29,177 3.723 120 3,759 1.366 204 774 0.359
37 28,373 3.697 121 3,681 1.345 205 762 0.354
38 27,597 3.670 122 3,603 1.324 206 749 0.349
39 26,838 3.654 123 3,529 1.304 207 737 0.343
40 26,113 3.615 124 3,455 1.284 208 725 0.338
41 25,396 3.587 125 3,383 1.264 209 714 0.333
42 24,715 3.559 126 3,313 1.244 210 702 0.328
43 24,042 3.531 127 3,244 1.225 211 691 0.323
44 23,399 3.503 128 3,178 1.206 212 680 0.318
45 22,770 3.474 129 3,112 1.187 213 670 0.314
46 22,161 3.445 130 3,049 1.168 214 659 0.309
47 21,573 3.416 131 2,986 1.150 215 649 0.305
48 20,998 3.387 132 2,926 1.132 216 639 0.300
49 20,447 3.357 133 2,866 1.114 217 629 0.296
50 19,903 3.328 134 2,809 1.096 218 620 0.292
51 19,386 3.298 135 2,752 1.079 219 610 0.288
52 18,874 3.268 136 2,697 1.062 220 601 0.284
53 18,384 3.238 137 2,643 1.045 221 592 0.279

54 17,904 3.208 138 2,590 1.028 222 583 0.275
55 17,441 3.178 139 2,539 1.012 223 574 0.272
56 16,991 3.147 140 2,488 0.996 224 566 0.268
57 16,552 3.117 141 2,439 0.980 225 557 0.264
58 16,131 3.086 142 2,391 0.965

RESISTANCE

(Ohms)

VOLTAGE
DROP (V)

TEMP

(F)

RESISTANCE

(Ohms)

VOLTAGE

DROP (V)

TEMP

(F)

RESISTANCE

(Ohms)

VOLTAGE
DROP (V)

42

Table 21 – Pressure (psig) vs. Voltage Drop Values for Suction Pressure Transducers

PRESSURE

(psig)

0 0.465 68 1.135 136 1.804 204 2.474

2 0.485 70 1.154 138 1.824 206 2.493

4 0.505 72 1.174 140 1.844 208 2.513

6 0.524 74 1.194 142 1.863 210 2.533

8 0.544 76 1.214 144 1.883 212 2.553

10 0.564 78 1.233 146 1.903 214 2.572

12 0.583 80 1.253 148 1.922 216 2.592

14 0.603 82 1.273 150 1.942 218 2.612

16 0.623 84 1.292 152 1.962 220 2.631

18 0.642 86 1.312 154 1.982 222 2.651

20 0.662 88 1.332 156 2.001 224 2.671

22 0.682 90 1.351 158 2.021 226 2.690

24 0.702 92 1.371 160 2.041 228 2.710

26 0.721 94 1.391 162 2.060 230 2.730

28 0.741 96 1.410 164 2.080 232 2.749

30 0.761 98 1.430 166 2.100 234 2.769

32 0.780 100 1.450 168 2.119 236 2.789

34 0.800 102 1.470 170 2.139 238 2.809

36 0.820 104 1.489 172 2.159 240 2.828

38 0.839 106 1.509 174 2.178 242 2.848

40 0.859 108 1.529 176 2.198 244 2.868

42 0.879 110 1.548 178 2.218 246 2.887

44 0.898 112 1.568 180 2.237 248 2.907

46 0.918 114 1.588 182 2.257 250 2.927

48 0.938 116 1.607 184 2.277 252 2.946

50 0.958 118 1.627 186 2.297 254 2.966

52 0.977 120 1.647 188 2.316 256 2.986

54 0.997 122 1.666 190 2.336 258 3.005

56 1.017 124 1.686 192 2.356 260 3.025

58 1.036 126 1.706 194 2.375 262 3.045

60 1.056 128 1.726 196 2.395 264 3.065

62 1.076 130 1.745 198 2.415 266 3.084

64 1.095 132 1.765 200 2.434 268 3.104

66 1.115 134 1.785 202 2.454 270 3.124

VOLTAGE
DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

43

Table 22 – Discharge Pressure Transducer (psig) vs. Voltage

PRESSURE

(psig)

14.5 0.500 95 0.993 176 1.490 257 1.987
16 0.509 96 1.000 177 1.496 258 1.993
17 0.515 97 1.006 178 1.502 259 1.999
18 0.521 98 1.012 179 1.508 260 2.005
19 0.528 99 1.018 180 1.515 261 2.011
20 0.534 100 1.024 181 1.521 262 2.017
21 0.540 101 1.030 182 1.527 263 2.023
22 0.546 102 1.036 183 1.533 264 2.029
23 0.552 103 1.043 184 1.539 265 2.036
24 0.558 104 1.049 185 1.545 266 2.042
25 0.564 105 1.055 186 1.551 267 2.048
26 0.570 106 1.061 187 1.557 268 2.054
27 0.577 107 1.067 188 1.564 269 2.060
28 0.583 108 1.073 189 1.570 270 2.066
29 0.589 109 1.079 190 1.576 271 2.072
30 0.595 110 1.085 191 1.582 272 2.079
31 0.601 111 1.092 192 1.588 273 2.085
32 0.607 112 1.098 193 1.594 274 2.091
33 0.613 113 1.104 194 1.600 275 2.097
34 0.620 114 1.110 195 1.606 276 2.103
35 0.626 115 1.116 196 1.613 277 2.109
35 0.626 116 1.122 197 1.619 278 2.115
36 0.632 117 1.128 198 1.625 279 2.121
37 0.638 118 1.134 199 1.631 280 2.128
38 0.644 119 1.141 200 1.637 281 2.134
39 0.650 120 1.147 201 1.643 282 2.140
40 0.656 121 1.153 202 1.649 283 2.146
41 0.662 122 1.159 203 1.656 284 2.152
42 0.669 123 1.165 204 1.662 285 2.158
43 0.675 124 1.171 205 1.668 286 2.164
44 0.681 125 1.177 206 1.674 287 2.170
45 0.687 126 1.184 207 1.680 288 2.177
46 0.693 127 1.190 208 1.686 289 2.183
47 0.699 128 1.196 209 1.692 290 2.189
48 0.705 129 1.202 210 1.698 291 2.195
49 0.711 130 1.208 211 1.705 292 2.201
50 0.718 131 1.214 212 1.711 293 2.207
51 0.724 132 1.220 213 1.717 294 2.213
52 0.730 133 1.226 214 1.723 295 2.220
53 0.736 134 1.233 215 1.729 296 2.226
54 0.742 135 1.239 216 1.735 297 2.232
55 0.748 136 1.245 217 1.741 298 2.238
56 0.754 137 1.251 218 1.747 299 2.244
57 0.761 138 1.257 219 1.754 300 2.250
58 0.767 139 1.263 220 1.760 301 2.256
59 0.773 140 1.269 221 1.766 302 2.262
60 0.779 141 1.275 222 1.772 303 2.269
61 0.785 142 1.282 223 1.778 304 2.275
62 0.791 143 1.288 224 1.784 305 2.281
63 0.797 144 1.294 225 1.790 306 2.287
64 0.803 145 1.300 226 1.797 307 2.293
65 0.810 146 1.306 227 1.803 308 2.299
66 0.816 147 1.312 228 1.809 309 2.305
67 0.822 148 1.318 229 1.815 310 2.311
68 0.828 149 1.325 230 1.821 311 2.318
69 0.834 150 1.331 231 1.827 312 2.324
70 0.840 151 1.337 232 1.833 313 2.330
71 0.846 152 1.343 233 1.839 314 2.336
72 0.852 153 1.349 234 1.846 315 2.342
73 0.859 154 1.355 235 1.852 316 2.348
74 0.865 155 1.361 236 1.858 317 2.354
75 0.871 156 1.367 237 1.864 318 2.361
76 0.877 157 1.374 238 1.870 319 2.367
77 0.883 158 1.380 239 1.876 320 2.373
78 0.889 159 1.386 240 1.882 321 2.379
79 0.895 160 1.392 241 1.888 322 2.385
80 0.902 161 1.398 242 1.895 323 2.391
81 0.908 162 1.404 243 1.901 324 2.397
82 0.914 163 1.410 244 1.907 325 2.403
83 0.920 164 1.416 245 1.913 326 2.410
84 0.926 165 1.423 246 1.919 327 2.416
85 0.932 166 1.429 247 1.925 328 2.422
86 0.938 167 1.435 248 1.931 329 2.428
87 0.944 168 1.441 249 1.938 330 2.434
88 0.951 169 1.447 250 1.944 331 2.440
89 0.957 170 1.453 251 1.950 332 2.446
90 0.963 171 1.459 252 1.956 333 2.452
91 0.969 172 1.466 253 1.962 334 2.459
92 0.975 173 1.472 254 1.968 335 2.465
93 0.981 174 1.478 255 1.974 336 2.471
94 0.987 175 1.484 256 1.980 337 2.477

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

44

Table 22 -- Discharge Pressure Transducer (psig) vs. Voltage (cont)

PRESSURE

(psig)

338 2.483 421 2.992 504 3.501 587 4.010
339 2.489 422 2.998 505 3.507 588 4.016
340 2.495 423 3.004 506 3.513 589 4.022
341 2.502 424 3.010 507 3.519 590 4.028
342 2.508 425 3.016 508 3.525 591 4.034
343 2.514 426 3.023 509 3.531 592 4.040
344 2.520 427 3.029 510 3.538 593 4.046
345 2.526 428 3.035 511 3.544 594 4.052
346 2.532 429 3.041 512 3.550 595 4.059
347 2.538 430 3.047 513 3.556 596 4.065
348 2.544 431 3.053 514 3.562 597 4.071
349 2.551 432 3.059 515 3.568 598 4.077
350 2.557 433 3.066 516 3.574 599 4.083
351 2.563 434 3.072 517 3.580 600 4.089
352 2.569 435 3.078 518 3.587 601 4.095
353 2.575 436 3.084 519 3.593 602 4.102
354 2.581 437 3.090 520 3.599 603 4.108
355 2.587 438 3.096 521 3.605 604 4.114
356 2.593 439 3.102 522 3.611 605 4.120
357 2.600 440 3.108 523 3.617 606 4.126
358 2.606 441 3.115 524 3.623 607 4.132
359 2.612 442 3.121 525 3.629 608 4.138
360 2.618 443 3.127 526 3.636 609 4.144
361 2.624 444 3.133 527 3.642 610 4.151
362 2.630 445 3.139 528 3.648 611 4.157
363 2.636 446 3.145 529 3.654 612 4.163
364 2.643 447 3.151 530 3.660 613 4.169
365 2.649 448 3.157 531 3.666 614 4.175
366 2.655 449 3.164 532 3.672 615 4.181
367 2.661 450 3.170 533 3.679 616 4.187
368 2.667 451 3.176 534 3.685 617 4.193
369 2.673 452 3.182 535 3.691 618 4.200
370 2.679 453 3.188 536 3.697 619 4.206
371 2.685 454 3.194 537 3.703 620 4.212
372 2.692 455 3.200 538 3.709 621 4.218
373 2.698 456 3.206 539 3.715 622 4.224
374 2.704 457 3.213 540 3.721 623 4.230
375 2.710 458 3.219 541 3.728 624 4.236
376 2.716 459 3.225 542 3.734 625 4.243
377 2.722 460 3.231 543 3.740 626 4.249
378 2.728 461 3.237 544 3.746 627 4.255
379 2.734 462 3.243 545 3.752 628 4.261
380 2.741 463 3.249 546 3.758 629 4.267
381 2.747 464 3.256 547 3.764 630 4.273
382 2.753 465 3.262 548 3.770 631 4.279
383 2.759 466 3.268 549 3.777 632 4.285
384 2.765 467 3.274 550 3.783 633 4.292
385 2.771 468 3.280 551 3.789 634 4.298
386 2.777 469 3.286 552 3.795 635 4.304
387 2.784 470 3.292 553 3.801 636 4.310
388 2.790 471 3.298 554 3.807 637 4.316
389 2.796 472 3.305 555 3.813 638 4.322
390 2.802 473 3.311 556 3.820 639 4.328
391 2.808 474 3.317 557 3.826 640 4.334
392 2.814 475 3.323 558 3.832 641 4.341
393 2.820 476 3.329 559 3.838 642 4.347
394 2.826 477 3.335 560 3.844 643 4.353
395 2.833 478 3.341 561 3.850 644 4.359
396 2.839 479 3.347 562 3.856 645 4.365
397 2.845 480 3.354 563 3.862 646 4.371
398 2.851 481 3.360 564 3.869 647 4.377
399 2.857 482 3.366 565 3.875 648 4.384
400 2.863 483 3.372 566 3.881 649 4.390
401 2.869 484 3.378 567 3.887 650 4.396
402 2.875 485 3.384 568 3.893 651 4.402
403 2.882 486 3.390 569 3.899 652 4.408
404 2.888 487 3.397 570 3.905 653 4.414
405 2.894 488 3.403 571 3.911 654 4.420
406 2.900 489 3.409 572 3.918 655 4.426
407 2.906 490 3.415 573 3.924 656 4.433
408 2.912 491 3.421 574 3.930 657 4.439
409 2.918 492 3.427 575 3.936 658 4.445
410 2.925 493 3.433 576 3.942 659 4.451
411 2.931 494 3.439 577 3.948 660 4.457
412 2.937 495 3.446 578 3.954 661 4.463
413 2.943 496 3.452 579 3.961 662 4.469
414 2.949 497 3.458 580 3.967 663 4.475
415 2.955 498 3.464 581 3.973 664 4.482
416 2.961 499 3.470 582 3.979 665 4.488
417 2.967 500 3.476 583 3.985 666 4.494
418 2.974 501 3.482 584 3.991 667 4.500
419 2.980 502 3.488 585 3.997
420 2.986 503 3.495 586 4.003

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

PRESSURE

(psig)

VOLTAGE

DROP (V)

45

MAJOR SYSTEM COMPONENTS

General

The 48/50FC and 48/50GC single packa ge rooftop units are availabl e
with the factory--installed optional SystemVut electronic control

system that monitors all operations of the rooftop. The control system
is composed of se veral main control components and available
factory-installed options or field-installed accessories as listed in
sections below. See Fig. 21 -- 28 for examples of typica l control and
power schematics.

Fig. 21 -- 48FC 04--06 SystemVut Control Schematic

46

a48--- 10322

Fig. 22 -- 48FC 07 and 48GC 04--06 SystemVut Control Schematic

47

a48--- 10323

Fig. 23 -- 50FC 04--06 SystemVut Control Schematic

48

a50--- 10506

Fig. 24 -- 50FC 07 and 50GC 04--06 SystemVut Control Schematic

49

a50--- 10507

Fig. 25 -- 48FC 04--07 SystemVut Power Schematic (208/230V-- 3--60 unit shown)

50

a48--- 10324

Fig. 26 -- 48GC 04 --06 SystemVut Power Schematic (208/230V--3--60 unit shown)

51

a48--- 10325

Fig. 27 -- 50FC 04--07 SystemVut Power Schematic (208/230V-- 3--60 unit shown)

52

a48--- 10508

Fig. 28 -- 50GC 04 --06 SystemVut Power Schematic (208/230V--3--60 unit shown)

53

a48--- 10509

Main Base Board (MBB)

See Fig. 29 and Table 23. The majority of the I/O is connected to
the MBB which executes the controls operation of the unit from
the software that is loaded onto it.

J2

J1

J3A J3B J3C J3D J3E J4 J5 J6 J7

J8 J9

TB5

J10

J11

J12

J13

J14

TB4J15J16J17J20J18TB3TB2TB1

C150161

Fig. 29 -- Main Base Board (MBB)

54

Table 23 – Main Base Board (MBB) Connections

DISPLAY NAME SENSOR LOCATION I/O TYPE POINT NAME

INPUTS

Input power from TRAN2 Control Box 24 VAC J2, 1 and 8

COFS Dain Pan 24 VAC COFS J4 , 1 --- 4

FIRE SHUTDOWN Supply/Return/Space Switch input FIREDOWN J 5 , 1 --- 4

IGC FAN REQUEST Gas section Switch input IGC_IFO J 6 , 1 --- 2

IAQ LEVEL Return/Space 0 --- 2 0 m A IAQ J7,1,5---6

OARH LEVEL Economizer 0 --- 2 0 m A OARH J7,2,6---7

ECON ACT POSITION Economizer 2 --- 1 0 v d c DAMPPOS J7,3,8

FAN SUPPLY TEMP Indoor fan deck 10k thermistor FST J8,1,4

RETURN AIR TEMP Return 10k thermistor RAT J8,2,5

OUTDOOR AIR TEMP Outdoor coil 10k thermistor OAT J8,3,6

CIR.A SUC. PRESS Circuit A Suction pipe 0--- 5 VDC pressure transducer SSP_A J 9 , 1 --- 2 , 5

CIR.A DIS. PRESS Circuit A Discharge pipe 0 --- 5 VDC pressure transducer SDP_ A J 9 , 4 --- 3 , 6

Configurable 0 --- 2 0 m A T B 5 , 4 --- 6

SLIDER OFFSET VAL Space 10k thermistor SPTO T B 5 , 2 --- 3

SPACE TEMPERATURE Space 10k thermistor SPACE_T T B 5 , 1 --- 2

CIR.A HPS Circuit A Discharge pipe Switch Input CIRA_HPS QC, 1--- 2J18, 1, 3

IDF LIMIT SWITCH Indoor Fan Switch Input IDF_ LSM QC, 3--- 4J18, 2,4

FILTER STATUS SW FIOP/Field--- installed Switch Input FILTSAT T B 3 , 1 --- 2

Configurable F i e l d --- i n st a l l e d Switch Input T B 3 , 3 --- 4

PHASE MONITOR SW Control Box Sw itch Input PWR_STAT T B 3 , 5 --- 6

TSTAT G INPUT Spa ce Switch Input G TB1, G

TSTAT Y1 INPUT Space Sw itch Input Y1 TB1, Y1

TSTAT Y2 INPUT Space Sw itch Input Y2 TB1, Y2

HUMIDISTAT F i e l d --- i n s t a l l e d Switch Input HUMDSTAT TB1, Y3

TSTAT W1 INPUT Space Switch Input W1 TB1 , W1

TSTAT W2 INPUT Space Switch Input W2 TB1 , W2

OUTPUTS

Optional power out Not Used 24 VAC J 1 , 1 --- 2

ECON CMD POSITION 0 --- 2 0 m A DAMPCMD J7,4,8

COMMANDED IDF RPM Indoor fan section PWM1 FSPD_RPM J 10, 1 --- 4

not used PWM2 J11, 1 --- 4

not used PWM3 J12, 1 --- 4

ALARM RELAY Relay 11 ALMOUT T B 2 , 3 --- 4

ODF SPEED RELAY No t Used Relay 10 OFR J3A, 1, 3

COMP A LOADER Not Used Relay 9 COMP_ALD J3A, 2, 4

CCH RELAY Not Used Relay 8 CCHR1 J3B, 1, 3

COMPRESSOR A1 Not Used Relay 7 COMP_A1 J3B, 2, 4

PE1 RELAY Relay 6 PE1 J 3 C , 1 --- 4

RH DISCH VALVE Relay 5 RDV_A J3D, 1, 4

RH LIQUID VALVE Relay 4 RLV_A J3D, 2, 5

COOL LIQUID VALVE Relay 3 CLV_A J3D, 3, 6

HEAT 2 RELAY Relay HEAT_2 J3E, 1, 3

HEAT 1 RELAY Relay HEAT_1 J3E, 2, 4

COMMUNICATION

Building Automated System (BAS) Building Communicat ion TB 4 , 1 --- 5

Ethernet Not Used Communicat ion J13, J14

Expansion LEN Bus Not Used Communication J15, 1 --- 4

Expansion LEN Bus Not Used Communication J16, 1 --- 4

Local Equipment Network (LEN) Communication J17

RNET Sensors Building Communicat ion J20, 1---4

Display Copper Cable Communication J23

RNET Service Access Communication J24, 1--- 5

DISPLAY CONNECTIONS

Display Copper Cable Communication J1

Local Equipment Network (LEN) Communication J2

U S B --- A Communicat ion J3

U S B --- B Not Used Communication J4

Keypad Ribbon Cable Communication J6

CONNECTION PIN

NUMBER

55

Integrated Gas Control (IGC) Board

The IGC is provided on gas heat units. The IGC controls the direct
spark ignition system and monitors the rollout switch, limit switch,
and flue gas pressure switch.

a48--- 10376

Fig. 30 -- Integrated Gas Control (IGC) Board

Table 24 – Integrated Gas Control (IGC) Board Connections

TERMINAL

LABEL

24VAC, C Power for IDR on 575v units control box 24 VAC Quick Connects

C Input power common TB4 to IGC 24 VAC P2, 1

R Input power from TRAN 1 TB4 to IGC 24 VAC P2, 6

L1 High voltage supply or 24vac control box 208/230v, 460v, or 24vac Quick Connect

FS Flame sensor gas section switch input Quick Connect

W Heat stage 1 Call MBB to IGC 24 VAC P2, 3

G Indoor Fan Call not used 24 VAC P2, 4

RS Rollout switch gas section switch input P1 , 3 --- 4

LS Limit switch gas section switch input P1, 1 and 8

PS Pressure Differential switch gas section switch input P 1 , 6 --- 7

FOD Fan Off De lay jumpe r control box jumper P3

CM Induced draft combustion motor or IDR gas section line VAC or 24vac Quick Connect

T1 Ignition Spark gas section high voltage spark Quick Connect

IFO Indoor fan request control box relay P2, 5

C Common for Ga s Valve gas section 24 VAC P1, 2

GV (W1) Gas valve (heat stage 1) gas section relay P1, 5

GV (W2) Gas Valve (heat stage 2, from MBB) gas section Not o n IGC

POINT DE SCRIPTION SENSOR LOCATION TYPE OF I/O

INPUTS

OUTPUTS

CONNECTION

PIN NUMBER

56

Protective Devices

Compressor Protection

Overcurrent

Each compressor has internal line break motor protection.

Overtemperature

Each compressor has an internal protector to protect it against
excessively high discharge gas temperatures.

High--Pressure Switch

If the high-pressure switch trips, the compressor will shut down
and the Circuit A High Pressure Alert will activate. Refer to the
alarm section for the High pressure alert.

Evaporator Fan Motor Protection

The ECM motor is protected from locked rotor and over-current
protection through the electronic control module attached to the
motor.

Condenser Fan Motor Protection

The motor is internally protected against overload.

Saturated Suction Pressure (SSP)

If the SSP for a parti cular circuit is readi ng below the alarm set point
for an extended period of time, that circuit will be shut down. After 15
minutes, the alarm will automatically reset. If this alarm occurs 3 times
consecutively, the circuit will remain locked out until an alarm reset is
initiated via CCN or manually via the SystemVut controller display
(see Alarms and Alerts section for more details).

Condensate Overflow Switch (COFS)

A separate factory installed device can detect a full drain pan. This
device consists of a pan sensor to detect the water level and a relay
control switch to read the sensor. The control switch is located in
the supply fan section and feeds into the SystemVu control to trip a

condensate overflow fault. The relay switch is a normally open
device that closes when power is applied. If the sensor detects high
water levels for 10 seconds straight, it will open the contact
removing the input provided to the SystemVu control. The switch
will also turn its red LED on. If the water level is low enough for 5
minutes the relay will close again applying the input back to the
SystemVu controller. A blinking red LED on the switch indicates
that the sensor has been disconnected.

Space Mounted Sensors

Space Temperature Sensor (T--55)

The T-55 space temperature sensor (part no. 33ZCT55SPT) is a
field-installed accessory. The sensor is installed on a building
interior wall to measure room air temperature. The T-55 sensor also
includes an override button on the front cover to permit occupants
to override the Unoccupied Schedule (if programmed).

TB5--1 Sensor Input.............

TB5--2 Sensor Common.............

Space Temperature Sensor (T--56)

The T-56 space temperature sensor (part no. 33ZCT56SPT) is a
field-installed accessory. This sensor includes a sliding scale on the
front cover that permits an occupant to adjust the space temperature
set point remotely. The T-56 sensor also includes an override
button on the front cover to allow occupants to override the
unoccupied schedule (if programmed).

TB5--1 Sensor Input...........

TB5--2 Sensor Common...........

TB5--3 Setpoint Offset Input...........

Space Temperature Sensor Averaging

See Fig. 31 for space temperature averaging with T-55 sensors
only. If the use of one T-56 sensor is required, refer to Fig. 32.

57

RED

BLK

RED

BLK

TB1-T55

1

2

TO MAIN
BASE BOARD

TB1-T55

1

2

TO MAIN
BASE BOARD

RED

BLK

LEGEND

TB -- Terminal Block
______ -- Factory Wiring
_ _ _ _ -- Field Wiring

RED

BLK

SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4

RED

BLK

SPACE TEMPERATURE AVERAGING --4 T-55 SENSOR APPLICATION

RED

BLK

BLK

SENSOR 1

RED

RED

BLK

SENSOR 2

RED

BLK

RED

BLK

RED

BLK

SENSOR 3

TB1-T55

1

2

TO MAIN

BASE

BOARD

RED

BLK

SENSOR 6SENSOR 5

BLK

SENSOR 4

RED

RED

BLK

RED

BLK

SENSOR 8SENSOR 7 SENSOR 9

SPACE TEMPERATURE AVERAGING --9 T-55 SENSOR APPLICATION

Fig. 31 -- Space Temperature Sensor Averaging

RED

BLK

RED

BLK

RED

BLK

RED

BLK

C07032

TB1-T55

3

TO MAIN

BASE

BOARD

T-55 SENSOR 1 T-55 SENSOR 2 T-55 SENSOR 3 T-56 SENSOR 4

WHT

C07033

Fig. 32 -- Space Temperature Sensor Averaging with 3 T--55 Sensors and One T--56 Sensor

58

Carrier Comfort NetworkR(CCN) Interface

The units can be connected to the CCN if desired. The
communication bus wiring is a shielded, 3-conductor cable with
drain wire and is field supplied and installed. The system elements
are connected to the communication bus in a daisy chain
arrangement. (See Fig. 33.) The positive pin of each system
element communication connector must be wired to the positive
pins of the system elements on either side of it. This is also
required for the negative and signal ground pins of each system
element. Wiring connections for CCN should be made at the CIB.
(See Fig. 22 and 23.) Consult the CCN Contractor’s Manual for
further information.

NOTE: Conductors and drain wire must be 20 AWG (American
Wire Gauge) minimum stranded, tinned copper. Individual
conductors must be insulated with PVC, PVC/nylon, vinyl,
Teflon*, or polyethylene. An aluminum/polyester 100% foil shield
and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon
with a minimum operating temperature range of –20_Cto60_Cis
required. See Table below for acceptable wiring.

MANUFACTURER PART NO.

Alpha 2413 or 5463

Belden 8772

Carol C2528

West Penn 302

It is important when connecting to a CCN communication bus that
a color-coding scheme be used for the entire network to simplify
the installation. It is recommended that red be used for the signal
positive, black for the signal negative and white for the signal
ground. Use a similar scheme for cables containing different
colored wires.

At each system element, the shields of its communication bus
cables must be tied together. The shield screw on CIB can be used
to tie the cables together. If the communication bus is entirely
within one building, the resulting continuous shield must be
connected to a ground at one point only. The shield screw on CIB
is not acceptable for grounding. If the communication bus cable
exits from one building and enters another, the shields must be
connected to grounds at the lightning suppressor in each building
where the cable enters or exits the building (one point per building
only).

To connect the unit to the network:

1. Turn off power to the control box.

2. Cut the CCN wire and strip the ends of the red (+), white
(ground), and black (–) conductors. (Substitute appropriate
colors for different colored cables.)

3. Connect the red wire to (+) terminal on CIB, the white wire
to COM terminal, and the black wire to the (–) terminal.

4. The RJ14 CCN connector on CIB can also be used, but is
only intended for temporary connection (for example, a
laptop computer running Carrier network software).

5. Restore power to unit.

IMPORTANT: A shorted CCN bus cable will prevent some
routines from running and may prevent the unit from starting. If
abnormal conditions occur, unplug the connector. If conditions
return to normal, check the CCN connector and cable. Run new
cable if necessary. A short in one section of the bus can cause
problems with all system elements on the bus.

*Teflon is a registered trademark of DuPont.

59

CCN BUS

BUILDING SUPERVISOR

REMOTE
CCN SITE

NETWORK

OPTIONS

AUTODIAL
GATEWAY

TERMINAL

SYSTEM

MANAGER

CL

CL

ROOFTOP

UNIT

ROOFTOP

UNIT

CL

ROOFTOP

UNIT

HEATING/COOLING UNITS

TCU

DAV AI R

TERMINAL

TCU

DAV AIR

TERMINAL

CL

CL

ROOFTOP

UNIT

ROOFTOP

UNIT

TCU

CCN -- Carrier Comfort Network

LEGEND

CL -- ComfortLink Controls
DAV -- Digital Air Volume
HVAC -- Heating, Ventilation, and
Air Conditoning
TCU -- Terminal Control Unit

TO
ADDITIONAL
TERMINALS

DAV FAN
POWERED
MIXING
BOX

®

NON CARRIER

HVAC

EQUIPMENT

COMFORT

CONTROLLER

AIR DISTRIBUTION-DIGITAL AIR VOLUME CONTROL (DAV)

C07030

Fig. 33 -- CCN System Architecture

60

APPENDIX A: SystemVut Controller Display

Run Status Main Menu Layout

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

SHUTDOWN UNIT? Local Unit Shutdown Req. Ye s/N o Command LO CSHUT

RUN STATUS Run Status Menu

MODE Mode St atus Menu

MODE Operating Mode see Appendix B MODETEXT

S U B --- M O D E O p e r a t i n g S u b --- M o d e see Appendix B SUBMTEXT

DEMAND System Demand see Appendix B SYS_DMDT

LINKAGE ACTIVE Linkage Active Yes / No LNK_ACT

EFF COOL SETPOINT Cool Setpoint In Effect xx.x °F CSP_EFF

EFF HEAT SETPOINT Heat Setpoint In Effect xx.x °F HSP_EFF

DEMAND CTRL TEMP Effective Demand Temp xxx.x °F TEMP_EFF

OCC SPRH SETPOINT Occupied SPRH Setpoint xxx.x % SPRH_OSP

UNOCC SPRH SP Unoccupied SPRH Setpoint xxx.x % SPRH_USP

COOL MODE T.GUARD Cool Mode Select T.guard xxx sec COOLMSTG

HEAT MODE T.GUARD Heat Mode Select T.guard xxx sec HEATMSTG

COOLING DEMAND Space Cooling Demand xx.x ΔF COOL_DMD

COOL DEMAND TREND Cooling Demand Trend xx.x CLDTREND

HEATING DEMAND Heating Space Demand xx.x Δ F HEAT_DMD

HEAT DEMAND TREND Heat Space Demand Trend xx.x HTDTREND

DMD LIMIT STATUS DEMAND LIMIT STATUS

COOL DMD LIM OFF Cool Demand Limiting Ye s/ N o CDMLMOFF

HEAT DMD LIM OFF Heat Demand Limiting Yes / No HDMLMOFF

COOL DMD LIM LEV Cool demand Limit Level 0to3 CDMDLLEV

HEAT DMD LIM LEV Heat demand Limit Level 0to3 HDMELLEV

CL DMD LIM OFFSET Cool Demand limit offset xx.x °F COOLDLMO

HT DMD LIM OFFSET Heat Demand limit offset xx.x °F HEATDLMO

COOL Cooling Status Menu

COMMANDED IDF RPM IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

ACTIVE COOL STAGE Actual Cool Stage Active x ACTCSTGS

ECON CMD POSITION Econo Commanded Position 0 to 100 % Forcible DAMPCMD

REQ. DEHUM LEVEL Requested Dehum Level 0=Normal,

MECHANICAL COOLING Mechanical Cooling Detail Sub--- Menu

OK TO MECH COOL Ok to use compressors? Yes / No OKMECHCL

MECH COOL ACTIVE Mechanical Cool active? Yes/ No MECHCOOL

MAX COOL STAGES Max Allowed Cool Stages 0to3 Forcible MAXCSTGS

REQ. COOL STAGES Requested Cooling Stages 0to3 REQCSTGS

ACTIVE COOL STAGE Actual Cool Stage Active x ACTCSTGS

ODF STATE ODF State 0=OFF,

COMP A1 TIMEGUARD Compressor A1 Timeguard xxx sec TIMGD_A1

CMP LDR TIMEGUARD Comp A1 Loader Timeguard xxx sec TIMG_ALD

SUPPLY AIR TREND Supply Air Temp Trend xxx.x SATTREND

COMP A1 STRIKES Compressor A1 strikes x A1STRIKE

HI PRESS OVERRIDE High Pressure Override Yes/ No HP_OVR

CIRCUIT A LOCKOUT Circuit A Locked Out Yes/N o CIRALOCK

LOW COOL LOCKOUT Low cooling locked out Yes/ No LC_LOCK

COMP A1 AVAILABLE Compressor A1 Available Ye s / No CA1_AVAL

COMP A1 LOCKOUT Compressor A1 Locked Out Yes / No CA1_ LOCK

FREE COOLING Free Cooling Detail Sub---menu

OK TO FREE COOL OKtoUseFreeCooling? Yes/ No OKFREECL

IN FREE COOLING Free Cooling active Ye s/N o FREECOOL

FREECOOL SAT SP Free Cooling SAT Setpnt xx.x °F FC_SATSP

REQ. DAMPER POS Requested Damper Pos 0 to 100 % REQDAMP

ECON OPERATIONAL? Econ Damper Operational Yes /No DAMPGOOD

DRY BULB LOCKOUT Dry Bulb Lockout Ye s / No Forci ble DBLOCK

ENTHALPY LOCKOUT Enthalpy Lockout Ye s/ N o Fo rcib le ENTHLOCK

OK TO UNOCC FC? Ok to Unocc Free Cool? Yes/ No OKTOUFC

IN UNOC FREECOOL? Unocc Free Cool Active Ye s/N o UFC_ACT

UFC LOCKOUT? Unocc Free Cool Lockout Ye s/N o UNOCLOCK

1 = Subcool,
2=Reheat,

1=ON,
2=LOW,
3=HIGH

REQDHLEV

ODFSTATE

61

APPENDIX A: SystemVut Controller Display

Run Status Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

COOL (cont) Cooling Status Menu

DEHUMIDIFICATION DEHUMIDIFICATION

OK TO DEHUM Ok to Dehumidify Yes/N o OKTODHUM

OK TO USE FBD Ok to use Fan Dehum Ye s /N o OKTOFBD

OK TO REHEAT Ok to use H umidimizer Yes/N o OKTOHUMZ

REQ. DEHUM STGS Req Compr DehumStgs 0to3 REQDSTGS

FBD SST LOCK OUT FBDH SST Lockout Ye s /No FBDSSTLO

FBD SAT LOCK OUT FBDH SAT Lockout Ye s /N o FBDSATLO

HEAT Heating Status Menu

COMMANDED IDF RPM IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

IGC FAN REQUEST IG C Fan On Request (IFO) On/Off IGC_IFO

REQ. HEAT STAGES Requested Heating Stages 0to2 REQHSTGS

ACTIVE HEAT STAGE Actual Heat Stage Active x ACTHSTGS

OK TO USE H EAT OK t o Run Heat Yes/N o OKTOHEAT

MAX HEAT STAGES Max Allowed Heat Stages 0to2 Forcib le MAXHSTGS

HEAT 1 TIMEGUARD Heat Stage 1 Timeguard xxx sec TIMGD_H1

HEAT 2 TIMEGUARD Heat Stage 2 Timeguard xxx sec TIMGD_H2

SUPPLY AIR TREND Supply Air Temp Trend xxx.x SATTREND

HEAT LOCKOUT All Heat Stages Lockout Yes / No Forcible ALLHTLOC

HEAT 1 AVAILABLE Heat Stage 1 Available Yes /No HT1_AVAL

HEAT 2 AVAILABLE Heat Stage 2 Available Yes /No HT2_AVAL

OK TO SA TEMPER OK to SupplyAirTempering Ye s /No OKTOTEMP

VENTILATION Ventilation Status Menu

VENT MODE Ventilation Status see Appendix B VENTTEXT

EFFECTIVE MIN POS MinPositioninEffect 0 to 100 % Forcibl e MIN_POS

ECON ACT POSITION Damper Actual Position 0 to 100 % DAMPPOS

COMMANDED IDF RP IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

OCCUPIED NOW Currently Occupied Yes/N o Forcible OCCUPIED

IN PREOCC PURGE? In Pre --- Occupancy Purge? Yes /N o PREOCCON

IN FREE COOLING Free Cooling active Yes/ No FREECOOL

DIFF AIR QUALITY Differential Air Quality ---5000 to 5000 PPM AQ_DIFF

OK TO PREOC PURGE Ok to Preoccupancy Purge Ye s/N o OKPREOCC

IN IAQ OVERRIDE Is IAQ Override Active? Yes /N o IAQ_OVRD

DCV CURVE OFFSET IAQ DCV Curve Offset 0 to 100 % IAQ_OFFS

INDOOR FAN Indoor Fan Status Menu

COMMANDED IDF RPM IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

IDF SPD OVERRIDE IDF Speed Override Flag On/Off FA N_OVRD

FAULT ON ERROR Shut Down on IDF Failure Ye s/ N o Configurable FATALFAN

IDF ERROR STATUS IDF Operation Errors? Ye s /No IDFBAD

IDF SPD REDUCTION IDF Speed Reduction On Yes/N o FANRED1 0

GENERAL General Run Da ta Menu

FILTER TIME LEFT Filter hour remaining xxxx hrs FILTLEFT

RESET FILTER TIME Reset Filter Timer Yes/N o Command RESETFLT

IN DAYLIGHT SAVE? DST currently active Yes/N o DST_ACTV

TCS ACTIVE? Temp Compensate Start On Yes / No TCS_ ACT

OCCUPANCY OCCUPANCY DATA

OCCUPIED NOW Currently Occupied Yes/N o Forcible OCCUPIED

MINS UNTIL OCC Mins until next occupied x --- 1 to 10080 min MINTILOC

ACTIVE OCC CTRL Active Occupancy control 0=24/7 OCC,

LINKAGE OCC REQ Linkage Occupied Request 0=Unocc,

TIMEDOVRDREMAIN Timed Override Remaining 0 to 240 min Forcible OVR_EXT

REMOTE OCC SWITCH Remote Occupancy Switch On/Off Forcible REMOCC

BMS OCC REQUEST BMS Occupancy Request 0=UNOCC,

LOCAL OCC REQUEST Local Sched Occ Request 0=Unocc,

ACTIVE PERIOD Active Schedule period 0to8 PER_NO

HOLIDAY TOMORROW? Tomorrow Is A Holiday Ye s/N o HOL_TMRW

HOLIDAY TODAY? Today Is A Holiday Yes /No HOLTODAY

1=SCHEDULE,
2=BAS CTRL,
3=REMOC CTL,
4=TIME OVRD,
5=LINKAGE,
6=FORCED

1=Occupied,
2=Disabled

1=OCCUPIED,
2=DISABLED

1=Occupied

Forcible LNK_OCC

Forcible BMS_OCC

Forcible LOC_ OCC

OCC_CTRL

62

APPENDIX A: SystemVut Controller Display

Run Status Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

OCCUPANCY (cont) OCCUP ANCY DATA

NEXT OCC DAY Next Occupied Day DDD NXTOCDAY

NEXT OCC TIME Next Occupied Time hh:mm min NXTOCTIM

NEXT UNOCC DAY Next Unoccupied Day DDD NXTUNDAY

NEXT UNOCC TIME Next Unoccupied Time hh:mm min NXTUNTIM

PREV UNOCC DAY Previous Unoccupied Day DDD PRVUNDAY

PREV UNOCC TIME Previous Unoccupied Time hh:mm min PRVUNTIM

Settings Main Menu Layout

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

SETTINGS Settings Menu

SPACE SET POINTS Space Setpoints Adjustment Menu

OCC COOL SETPOINT Occupied Cool Setpoint 55 to 80 °F 78 OCSP

OCC HEAT SETPOINT Occupied Heat Setpoint 55 to 80 °F 68 OH SP

UNOCC COOL SETPNT Unoccupied Cool Setpoint 65 to 95 °F 85 UCSP

UNOCC HEAT SETPNT Unoccupied Heat Setpoint 40 to 80 °F 60 UHSP

H E AT --- C O O L S P G A P Heat ---Cool Setpoint Gap 2to10 °F 5 HC SP_GAP

SPT SLIDER RANGE SPT Offset Range (+/ --- ) 0to5 °F 5 SPTO_RNG

OCC SPRH SETPOINT Occupied SPRH Setpoint 0 to 100 % 50 SPRH_OSP

UNOCC SPRH SET PT Unoccupied SPRH Setpoint 0 to 100 % 80 SPRH_ USP

SPRH RH DEADBAND Space RH Deadband 2to20 % 8 SPRH_DB

SA TEMPERING SP SA tempering Set point 30 to 80 °F 55 SATEMPSP

TEMP DEMAND CONFIG Temperature Demand Configuration menu

LOW COOL DMD ON Low Cool Demand On --- 1 t o 2 °F 0.5 DMDLCON

HIGH COOL DMD ON High Cool Demand On 0.5 to 20 °F 1.5 DMDHCON

LOW COOL DMD OFF Low Cool Demand Off --- 1 t o 2 °F --- 0 . 5 DMDLCOFF

COOL DMD LEVEL UP Cool Demand Level Up --- 2 t o 2 °F --- 0 . 2 CDMD_LUP

LOW HEAT DMD O N Low Heat Demand On --- 1 t o 2 °F 0.5 DMDLHON

HIGH HEAT DMD ON High Heat Demand On 0.5 to 20 °F 2 DMDHHON

LOW HEAT DMD O FF Low Heat Demand Off --- 1 t o 2 °F --- 0 . 5 DMDLHOFF

HEAT DMD LEVEL UP Heat Demand Level Up --- 2 t o 2 °F --- 0 . 2 HDMD_LUP

DEMAND TIMEGUARD1 Space Demand Time Guard1 60 to 600 sec 120 TDMD_TG 1

DEMAND TIMEGUARD2 Space Demand Time Guard2 0 to 600 sec 240 TDMD_ TG2

DEMAND TIMEGUARD3 Space Demand Time Guard3 5 to 120 min 10 TDMD_TG3

DMD LIMIT CONFIG DEMAND LIMIT CONFIG

COOL DMD LIM LEV1 COOL DMD Offset level 1 0to99 °F 1 CLDOLEV1

COOL DMD LIM LEV2 COOL DMD Offset level 2 0to99 °F 3 CLDOLEV2

COOL DMD LIM LEV3 COOL DMD Offset level 3 0to99 °F 5 CLDOLEV3

HEAT DMD LIM LEV1 Heat DMD Offset level 1 0to99 °F 1 HTDOLEV1

HEAT DMD LIM LEV2 Heat DMD Offset level 2 0to99 °F 3 HTDOLEV2

HEAT DMD LIM LEV3 Heat DMD Offset level 3 0to99 °F 5 HTDOLEV3

CLOCK Clock Adjustment Menu

TIME Clock Hour and Minute xx:xx hh.mm TIME

DATE Current Date MM/DD/YYYY DATE

DAYLIGHT SAVINGS Daylight Savings Configuratio n Menu

DAYLIGHT SAVINGS? DST allowed? Enable/Disable 1 DST_CFG

DST START MONTH DST Start Month 1=JANUARY,

DST START WEEK DST Start Week 1to5 2 STARTW

DST START DAY DST Start Day 1=MONDAY,

DST MINS TO ADD DST Minutes to Add 0to90 min 60 MINADD

2=FEBRUARY,
3=MARCH,
4=APRIL,
5=MAY,
6=JUNE,
7=JULY,
8=AUGUST,
9=SEPTEMBER,
10=OCTOBER,
11=NOVEMBER,
12=DECEMBER

2=TUESDAY,
3=WEDNESDAY,
4=THURSDAY,
5=FRIDAY,
6=SATURDAY,
7=SUNDAY

3 STARTM

7 STARTD

63

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

CLOCK (cont) Clock Adjustment Menu

DST STOP MONTH DST Stop Month 1=JANUARY,

DST STOP WEEK DST Stop Week 1to5 1 STOPW

DST STOP DAY DST Stop Day 1=MONDAY,

DST MINS TO SUB DST Minutes to Subtract 0to90 min 60 MINSUB

START TIME IN DAY Time in day to start DST 0 to 600 min 120 DST_TOD

SCHEDULES Schedules Adjustment Menu

SCHEDULE NUMBER CCN Schedule Number 0 = Always Occupied,

OCCUPANCY SCHEDULE OCCUPANCY SCHEDULE DATA

Holiday adjustment Menu Holiday adjustment Menu

ALLOW G. HOLIDAY? Accept Global Holidays? Ye s /N o No HOLIDAYT

TIMED OVR LENGTH Timed Override Duration 0to4 hrs 4 OTL_CFG

CAN CANCEL T.OVR Allow SPT Ovrd Cancel Yes/ No No CLROVCFG

UNIT CONFIGURATIONS Unit Configurations Menu

GENERAL General Unit Configurations Menu

STARTUP DELAY Unit Startup Delay 10 to 600 sec 30 STARTDLY

UNIT CONTROL TYPE Unit Control Type 0=TSTAT,

THERMOSTAT TYPE Thermostat Hardware Type 0=CONV 2C2H,

VENT METHOD Ventilation Method 0=NONE,

2POS/ERV CHANNEL 2 --- Pos Dampe r/ERV Channel 0=NONE,

ADAPTIVE TSTAT Tstat Adaptive Staging Yes/ No Yes ADPTSTAT

DIRTY FILTER TIME Change Filter Timer 0 t o 9999 hrs 600 FILTLIFE

TEST MODE TIMEOUT Test inactivity time out 0=Disabled,

CCH MAX TEMP CCH Max Temperature 40 to 90 °F 65 CCHMAXT

STD BARO PRESSURE Std Barometric Pressure 13 to 35 Hg 29.92 STD_BARP

LINK STAGEUP TIME Linkage Stage inc. time 60 to 600 sec 180 LSTAGINC

UNIT’S MAX SAT Unit’s Maximum SAT 130 to 210 °F 200 UMAX_SAT

AUTO SAT FAULTS? Auto Clr SAT Limit Fault Yes/ No No SATLACLR

ADAPTIVE TCS? Adaptive Temp Comp Start Enable/Disable Enable TCS_CFG

USER TCS BIASTIME User TC S Start Bias Time 0 to 180 min 0 TC SUBIAS

SWITCH INPUTS CONFIGS DI Config Menu

FIRE SHUTDOWN SW Fire Shutdown Switch 0=NORM OPEN,

HUMSTAT CHANNEL Humidistat Status Chan. 0=None,

HUMSTAT SW TYPE Humidistat Switch Type 0=NORM OPEN,

2=FEBRUARY,
3=MARCH,
4=APRIL,
5=MAY,
6=JUNE,
7=JULY,
8=AUGUST,
9=SEPTEMBER,
10=OCTOBER,
11=NOVEMBER,
12=DECEMBER

2=TUESDAY,
3=WEDNESDAY,
4=THURSDAY,
5=FRIDAY,
6=SATURDAY,
7=SUNDAY

1 --- 6 4 = L o c a l S c h e d u l e ,
65---99 = Global Schedule

1=SPACE SEN,
2=RAT SEN

1=DIGI 2C2H,
2=CONV 3C2H,
3=DIGI 3C2H

1=ECON,
2=2POS DMPR,
3=ERV,
4=ECON ERV

1=MBB RLY11,
2=MBB RLY06,

1=30 minutes,
2=1 hour,
3=2 hours,
4=4 hours,
5=8 hours,
6=12 hours

1=NORM CLSD,
2=NO SWITCH

1=MBB DI12,
2=MBB DI13.
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD,

11 STOPM

7 STOPD

0 = Always Occupied SCHEDNUM

0=TSTAT CTRLTYPE

0=CONV 2C2H STATTYPE

0: No FIOP
1: Economizer FIOP
2: Two Position Damper

FIOP

0: No FIOP
2: FIOP

4 TEST_ITO

2: no FIOP
0: FIOP

0 : N o H u m i d i --- M i Z e r

FIOP

5 : H u m i d i --- M i Z e r F I O P

0=NORM OPEN HUMD_CFG

VENTTYPE

EV2PCHAN

FIRE_CFG

HUMDCHAN

64

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

SWITCH INPUTS CONFIGS (cont) DI Config Menu

FILTER SW CHANNEL Filter Sta tus Sw Channel 0=None,

FILTER SW TYPE Filter Status Swith Type 0=NORM OPEN,

REMOTE OCC CHAN Remote Occupancy Channel 0=None,

REMOTE OCC TYPE Remote Occupancy Sw Type 0=NORM OPEN,

REM.SHUTDOWN CHAN Remote Shutdown Channel 0=None,

REM.SHUTDOWN SW T Remote Shutdown SW Type 0=NORM OPEN,

REM.SHUTDOWN TYPE Remote Shutdown ALM Type 0=Normal,

COFS CHANNEL COFS Assigned Channel 0=None,

COFS TYPE COFS Switch Type 0=NORM OPEN,

GEN STATUS CHAN General Status Channel 0=None,

GEN STAT SW TYPE General Status Sw Type 0=NORM OPEN,

SHUTDOWN GEN STAT Gene ral Sta tus shutdown? Yes /No Yes GENFATAL

ENTHALPY SW CHAN Enthalpy Sw Channel 0=None,

ENTHALPY SW TYPE Enthalpy Switch Type 0=NORM OPEN,

FAN STAT CHANNEL Fan Status Channel 0=None,

FAN STAT SW CFG Fan Status SW Type 0=NORM OPEN,

IAQ OVERIDE SW CH IAQ override sw channel 0=None,

IAQ OVRRD SW TYPE IAQ Override Switch Type 0=NORM OPEN,

PHASE MON CHANNEL Phase Monitor Channel 0=None,

PHASE MON SW TYPE Phase Monitor SW Type 0=NORM OPEN,

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=Emergency

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=NORM CLSD

0: No FIOP
1: FIOP

0=NORM OPEN FILT_CFG

0=None RMOCCHAN

0=NORM OPEN RMOC_CFG

0=None ROFFCHAN

0=NORM OPEN ROFF_CFG

0=Normal ROFFTYPE

0: No FIOP
4: FIOP

1=NORM CLSD COFS_CFG

0=None GEN_CHAN

0=NORM OPEN GENS_CFG

0=NONE ENTHCHAN

0=NORM OPEN ENTH_CFG

0=NONE FNSTCHAN

0=NORM OPEN FANSTICFG

0=NONE IAQOCHAN

0=NORM OPEN IAQOSCFG

0: No FIOP
3: FIOP

1=NORM CLSD PMR_CFG

FILTCHAN

COFSCHAN

PMR_CHAN

65

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

ANALOG INPUT CONFIGS Analo g Inputs Configuration Menu

SPRH SENS CHANNEL SPRH Assigned Channel 0=None,

SPRH RH @ 4MA SPRH Sensor Value at 4mA 0 t o 100 % 0 SPRH_4MA

SPRH RH @ 20MA SPRH Sensor Value @ 20mA 0 to 100 % 100 SPRH20MA

IAQ SENSOR CHAN IAQ Assigned Cha nnel 0=None,

IAQ PPM @ 4MA IAQ Sensor Value at 4mA 0 to 5000 PPM 0 IAQ_4MA

IAQ PPM @ 20MA IAQ Sensor Value at 20mA 0 to 5000 PPM 2000 IAQ_20MA

OAQ SENSOR CHAN OAQ Assigned Channel 0=None,

OAQ PPM @ 4MA OAQ Sensor Value at 4mA 0 to 5000 PPM 0 OAQ_4MA

OAQ PPM @ 20MA OAQ Sensor Value at 20mA 0 to 5000 PPM 2000 OAQ_20MA

OARH SENSOR CHAN OARH Assigned Channel 0=None,

OARH RH @ 4MA OARH Sensor Value at 4mA 0 to 100 % 0 OARH_4MA

OARH RH @ 20MA OARH Sensor Val. at 20mA 0 t o 100 % 100 OARH20MA

RARH SENS CHANNEL RARH Assigned Channel 0=None,

RARH RH @ 4MA RARH Sensor Value at 4mA 0 to 100 % 0 RARH_4MA

RARH RH @ 20MA RARH Sensor Value @ 20mA 0 to 100 % 100 RARH20MA

OACFM SENSOR CHAN OACFM Assigned Cha nnel 0=None,

OACFM @ 4MA OACFM value at 4MA 0 to 2000 CFM 0 OCFM_4MA

OACFM @ 20MA OACFM Value @ 20mA 2000 to 5000 CFM 2000 OCFM20MA

COOLING Cooling Configurations Menu

COMP MIN ON TIME Compressor Min On Time 180 to 600 se c 300 C_MINON

COMP MIN OFF TIME Compressor Min Off Time 120 to 600 sec 180 C_MINOFF

STRIKE CLEAR TIME Runtime to Reset Strikes 120 to 999 sec 300 MIN_ON_S

COOL STAGEUP TIME Cool Stage Increase Time 120 to 999 sec 450 CSTAGINC

COOL SATTREND LEV Cooling SAT Trend Level --- 1 t o 1 --- 0 . 2 SAT_TLC

UPPER MIN SAT Cool Min SAT Upper Level 35.0 to 65.0 °F 56 SATMIN_H

LOWE R M IN SAT Cool Min SAT Lower Level 35.0 to 65.0 °F 46 SATMIN_L

COOL FANOFF DELAY Cooling Fan--- Off Delay 0 t o 600 sec 75: All except below

ODF HIGH SPD TIME ODF High Speed Time 0 to 300 sec 120 MINODFTM

ODF RELAY ENABLE ODF Relay Enabled Ye s/ N o No: 48/50FC

DEHUMIDIFICATION DEHUMIDIFICATION

REHEAT EQUIPPED Humidimizer Equipped Ye s/N o No : N o H um i d i --- M i Z e r

REHEAT OAT LIMIT H umidimizer Lockout Temp --- 20 to 75 °F 40 OATLHUMZ

FAN BASED DEH UM Fan Based Dehum CFG Menu

FBD CONTROL TYPE Fan Base d Dehum Type 0=NONE,

FBD COOL DELTA FBDH Low Set Point --- 2 0 t o 0 ΔF --- 2 . 5 FBDLO_SP

FBD MAX S ST SP FBDH Max Mo de SST SP 20 to 60 °F 38 F BDSSTSP

FBD SST MIN VALUE FBDH Min SST Threshold 10 to 60 °F 32 FBDH_SST

FBD CMFT SAT SP FBDH Comfort SAT SP 35 to 80 °F 46 FBDH_SAT

FBD CMFT SAT DT FBD Comfort SAT Delta 0to30 °F 11 FBDSATDT

FBD MIN FAN SPD FBDH Min Fan Speed 0 t o 3000 RPM same as IDF LOW COOL

FBD MAX FAN SPD FBDH Max Fan Speed 0 to 3000 RPM same as IDF HIGH

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=Comfort,
2=Max

0=NONE SPRHCHAN

0: No FIOP
2: FIOP

0=NONE OAQ_CHAN

0: No FIOP
3: FIOP

0=NONE RARHCHAN

0=NONE OCFMCHAN

30: Size 07
90: 48/50GC 06

Yes: 48/50GC

FIOP

Ye s : H u m i d i --- M i Z e r F I O P

0=NONE FBD_TYPE

SPD (page 68)

COOL SPD (page 68)

IAQ_CHAN

OARHCHAN

COOL_FOD

OFR_EN

HUMZ_EN

FDRPMMIN

FDRPMMAX

66

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

COOLING (cont) Cooling Configurations Menu

LOW AMB IE NT LOW AMBIENT CONFIGS MENU

CIR.A LOCKOUT OAT CircuitALockoutTemp --- 20 to 75 °F 40: no Economizer FIOP

LOW COOL MIN OAT Low Cool lockout Temp --- 20 to 60 °F 10 LCLOCKSP

CHARGE DIAGNOSTICS Refrigerant Charge Diagnostic Config Menu

LOW CHARGE LEVEL Low Refrig Charge Level 0 to 150 PSI 50 LO CH AR GE

NO LOW CHARGE OAT Low Cha rge Disable Temp -- -40 to 50 °F 10 LOCH_ LOT

CIR.A SDP LIMIT CirA High Pressure Limit 400 to 700 PSI 670 HIPLIM_A

LOW DIS CH AR GE LEV Low Discharge Level 0to20 °F 0 SDTLEV

MIN PRESS RATIO Minimum Pressure Ratio 0to5 1.35 MINPSI_R

LOW SUC TION DIA G. Low Suction Diagnostic Config Menu

LOW SUC OK TEMP Suction OK Temperature 10 to 50 °F 18 SSTOK

LOW SUC LEVEL 1 Low Suction Leve l 1 Temp 10 to 50 °F 20 SSTLEV1

LOW SUC LEVEL 2 Low Suction Leve l 2 Temp 5to50 °F 15 SSTLE V2

LOW SUC LEVEL 3 Low Suction Leve l 3 Temp 0to50 °F 10 SSTLE V3

LO SUC D IA G DEL AY Delay On Low SST Check 0 to 300 sec 0noFIOP

COMPRESSOR TRANSITION Compressor Transition diagnostic config

COMP L2 DIAG DLY Comp Level 2 Diag Delay 1to99 sec 15 CDDTLEV2

DIAG. COMP OFF Diag Comp Unexpected Off Enable/Disable Enable CD_UEOFF

CIR STUCK ON DIAG Circuit Stuck On Diag. Enable/Disable Enable DCKTOFF

CIR.A MIN DIS.P Min discharge change 0to99 PSI 8 MDP_ DISA

CIR.A MIN SUC.P Min Suction change 0to99 PSI 10 MDP_SUCA

OFF P.RATIO CirA P.Ratio off change --- 1 t o 1 --- 0 . 3 OFFPR_A

HEATING Heating Configurations Menu

UNIT TYPE OF HEAT Type of Heat Installed 0=ELECTRIC,

HEATING STAGE QTY Number of Heating Stages 0to2 2: all except below

HEAT MIN ON Heat Minimum On Time 60 to 600 sec 120 H_MINON

HEAT MIN OFF Heat Minimum Off Time 60 to 600 sec 120 H_MINOFF

HEAT STAGEUP TIME Heat Stage Increase Time 120 to 999 sec 450 HSTAGINC

HEAT SATTREND LEV Heating SAT Trend Level --- 1 t o 1 0.2 SAT_TLH

LOWE R M AX SAT Heat Max SAT Lower Level 85 to 200 °F 140 SATMAX_L

UPPER MAX SAT Heat Max SAT Upper Level 85 to 200 °F 170 SATMAX_H

HEAT FANOFF DELAY Heating Fan---off Delay 10 t o 600 sec 30 (50 series)

HEAT LOCKO UT OAT Heating Lockout Temp 40 to 125 °F 75 OATLHEAT

SAT DURING HEAT? SAT Heat Mode Sensing Enable/Disable Enable SAT_HEAT

IGC IFO TIMEOUT No IGC IFO input Timeout 0to60 min 5 NO_IG CTM

PREHEAT W/O IDF? Pre---Heat HX without IDF? Enable/Disable Disable PREHT_HX

PREHEAT FAN DELAY Pre---HeatFanOnDelay 0 to 120 sec 30 PREHT_TM

SA TEMPER ENABLED Supply Air Temper Enable Yes /No No SATEMPEN

SA TEMPERING SP SA tempering Set point 35 to 80 °F 55 SATEMPSP

TEMPER MAX OUT Max OAT for SA tempering 40 to 80 °F 65 OATSTEMP

INDOOR FAN Indoor Fan Configurations Menu

OCCUPIED FAN? FanOnWhenOccupied Yes/ No Yes FANON_OC

IDF MAX SPEED IDF Maximum Fan Speed 0 to 100 % 100 SPEEDMAX

IDF VENT SPD IDF Vent Speed---RPM 0 to 3000 RPM same as IDF LOW COOL

IDF HEAT SPD IDF Heat Speed--- RPM 0 to 3000 RPM same as IDF HIGH

menu

1=GAS

0: Economizer FIOP

40: Humidi--- MiZer FIOP

0(50series)
1(48series)

0: 50 Series without
FIOP heaters
1: 48 Series single
phase power,
Low Nox Gas Heat,
48FC 04--- 07 Low Heat,
48FC 05--- 07 Med Heat,
50GC 04---06 Low Heat,
50GC 04---05 Med Heat,
50GC 04 High Heat
230v 3ph and 460v,
50GC 05 High Heat
230v 3ph,
50GC 06 Med Heat 460v
and 575v

45 (48 series)

SPD (page 68)

COOL SPD (page 68)

OATLCMPA

SSTCKDLY

HEATTYPE

NUMHSTGS

HEAT_FOD

RPM_VENT

RPM_HEAT

67

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

INDOOR FAN (cont) Indoor Fan Configurations Menu

IDF LOW COOL SPD IDF Low Cool Speed--- RPM 0 to 3000 RPM 1106: Size 04 Standard

IDF HIGH COOL SPD IDF High Cool Speed--- RPM 0 to 3000 RPM 1474: Size 04 Standard

IDF FREE COOL SPD IDF Free Cool Speed---RPM 0 t o 3000 RPM same as IDF LOW COOL

Static Fan

1281: Size 04 Medium

Static Fan

1457: Size 04 High Static

Fan

1112: Size 05 Standard

Static Fan

1269: Size 05 Medium

Static Fan

1439: Size 05 High Static

Fan 230v 1 ph

1556: Size 05 High Static

Fan 230v 3ph,
460v, 575v

1258: Size 06 Standard

Static Fan

1398: Size 06 Medium

Static Fan

1556: Size 06 High Static

Fan 230v 1 ph

1659: Size 06 High Static

Fan 230v 3ph,
460v, 575v

1184: Size 07 Standard

Static Fan

1302: Size 07 Medium

Static Fan

1460: Size 07 High Static

Fan

Static Fan

1708: Size 04 Medium

Static Fan

1942: Size 04 High Static

Fan

1482: Size 05 Standard

Static Fan

1693: Size 05 Medium

Static Fan

1919: Size 05 High Static

Fan 230v 1 ph

2075: Size 05 High Static

Fan 230v 3ph,
460v, 575v

1677: Size 06 Standard

Static Fan

1864: Size 06 Medium

Static Fan

2075: Size 06 High Static

Fan 230v 1 ph

2212: Size 06 High Static

Fan 230v 3ph,
460v, 575v

1794: Size 07 Standard

Static Fan

1973: Size 07 Medium

Static Fan

2212: Size 07 High Static

Fan

SPD

RPM_LCL

RPM_HCL

RPM_FCL

68

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

ECONOMIZER Economizer Configurations Menu

VENT METHOD Ventilation Method 0=NONE,

ECON MAX POS Econ Max Damper Position 0 to 100 % 100 DAMPMAX

ECON TRAVEL TIME Economizer Travel Time 5 to 300 sec 150 ECONOTRV

MINIMUM POSITION CONFIGS Minimum Position Configurations menu

MIN POS @ MAX FAN Econ Min at Max Fanspeed 0 to 100 % 30 MINP_MAX

MIN POS SPEED 1 Min Pos --- User Speed 1 0 to 100 % 0 MP_USPD1

MIN POS DAMP 1 M i n P o s --- U s e r P o s 1 0 to 100 % 0 MP_ UPOS1

MIN POS SPEED 2 Min Pos --- User Speed 2 0 to 100 % 0 MP_USPD2

MIN POS DAMP 2 M i n P o s --- U s e r P o s 2 0 to 100 % 0 MP_ UPOS2

MIN POS SPEED 3 Min Pos --- User Speed 3 0 to 100 % 0 MP_USPD3

MIN POS DAMP 3 M i n P o s --- U s e r P o s 3 0 to 100 % 0 MP_ UPOS3

FREE COOL CONFIGS Free Cooling Speci fi c Configurations Menu

LOW COOL SAT SP LowFree Cool SAT Setpnt 40 to 80 °F 65 LC SASP

HIGH COOL SAT SP High FreeCool SAT Setpnt 40 to 80 °F 55 HCSASP

FREE COOL MAX OAT Free Cooling Max OAT 0to90 °F 65 MAXFREET

FREE COOL MIN OAT Free Cooling Min Temp ---30 to 70 °F 0 MINFREET

DIFF DRY BULB CTL Diff. Dry Bulb Control Enable/Disable Disable DIFFBULB

DIFF DB DEADBAND Diff. Dry Bulb Deadband 0to20 °F 3 OATRATDB

ENTHALPY HI LIMIT Max Enthalpy OA limit 1to99 BTU/LB 28 FREEMAXE

DIFF ENTHALPY CTL Diff. Enthalpy Control Enable/Disable Disable DIFFENTH

ENTHALPY DEADBAND Enthalpy Cross Deadband 0to20 BTU/LB 2 OAERAEDB

UNOCCUPIED FREE COOL Unoccupied Free Cooling Configs Menu

WHEN TO UNOCC FC When to Unocc Free Cool? 0=Disabled,

UFCPREOCCTIME UFC PreOcc Time 1 to 999 min 120 UFCTIME

UFC LOW TEMP Unocc Free Cool Low Temp --- 30 to 70 °F 50 OATLUFC

POWER EXHAUST CONFIGS Power Exhaust Configurations Menu

PE1 RELAY CHANNEL PE1 Relay Channel 0=NONE,

PE1 POS @ MAX SPD PE Stage 1 at Max speed 0 to 100 % 40 PE1_PMAX

PE OFF DEADBAND PE Turn Off Dead band 0 to 100 % 5 PE_OFFDB

PE2 RELAY CHANNEL PE2 Relay Channel 0=NONE,

PE2 POS @ MAX SPD PE Stage 2 At Max Speed 0 to 100 % 75 PE2_PMAX

ECON ACT MECH DISC DIAG Econ Actuator Mechanical disconnect

M D D --- H / C E N D D L Y T24 Heat/Cool End Delay 0to60 min 25 T24CHDLY

MDD--- MIN MOVE T24Econ Min Move for SAT 10 to 20 % 10 T24ECSTS

M D D --- S A T D B Damper SAT deadband 0to20 °F 12 T24SATDB

M D D --- M I N R A T --- O A T T24 Min Diff in RAT---OAT 5to20 °F 15 T24RATDF

MDD--- MIN TEST POS T24 Test Minimum Pos 0 to 100 % 15 T24TSTMN

MDD--- MAX TEST POS T24 Test Maximum Pos 0 to 100 % 85 T24TSTMX

AIR QUALITY Air Qualit y Configurations Menu

ANALOG IAQ CTRL Analog Input IAQ Control 0=NO IAQ,

IAQ POS @ MAX SPD IAQ Position at Max Fan 0 to 100 % 10 IAQMINP

LOW AIR .Q DI FF AQ Differential Low 0 to 5000 100 DAQ_LOW

HIGH AIR.Q DIFF AQ Differential High 0 to 5000 700 DAQ_HIGH

PREOCC PURGE ENBL IAQ Preoccupa ncy Purge Yes/N o Yes IAQPURGE

PURGE POS @ MAX IAQ Purge Pos at Max IDF 0 to 100 % 40 IAQPMAX

PREOCC LOW LIMIT Preocc Purge Lockout OAT 0to70 °F 50 IAQP_LA

PREOCC PURGE TIME Preocc Purge Duration 5 to 120 min 15 IAQPTIME

A Q D I F H I --- I A Q O V R AQ Diff High IAQOVERRIDE 0 to 5000 PPM 700 AQD_HIGH

A Q D I F L O --- I A Q O V R AQ Diff Low --- IAQ OVERRIDE 0 to 5000 PPM 100 AQD_LOW

IAQ OVRRD ENABLE IAQ override enable Yes/ No No IAQOVREN

diagnostic menu

1=ECON,
2=2POS DMPR,
3=ERV,
4=ECON ERV

1=PreOcc,
2=Unocc

1=MBB RLY11,
2=MBB RLY06

1=MBB RLY11,
2=MBB RLY06

1=DCV,
2=IAQ OVRD,
3=CTRL MINP

0: No FIOP
1: Economizer FIOP
2: Two Position Damper

FIOP

1=PreOcc UFC_CFG

0: no FIOP
2: FIOP

0=NONE PE2_CHAN

0: no FIOP
1: FIOP

VENTTYPE

PE1_CHAN

IAQANCFG

69

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

ALARM RELAY Alarm Relay Configurat ions Menu

ALM RELAY CHANNEL ALM Relay Assigned Chan 0=NONE,

THERMOSTAT ALERTS Thermostat Alerts Ye s/N o Yes TSTAT_AL

HARDWARE ALERTS Hardware Failures Alerts Ye s /N o Yes HW_AL

SAT/RAT ALERTS SAT/RAT Sensor Alert s Yes /No Yes SATRATAL

OAT SENSOR ALERTS OAT Thermistor Alerts Yes / No Ye s OATRL_AL

SPACE SENS ALERTS Space Sensors Alerts Yes /No Yes SPACE_AL

TRANSDUCER ALERTS Transduce r Sensor Alerts Ye s /N o Yes TRANS_AL

RH SENSOR ALERTS RH sensor failure Alert Ye s/ N o Yes RHS_AL

CO2 SENSOR ALERTS Air Quality CO2 Alerts Yes / No Ye s CO2S_AL

OACFM SENS ALERTS OACFM Alarm Relay Yes /No No OACFM_AL

ECONOMIZER ALERTS Economizer Alerts Ye s/N o Yes ECON_AL

AIRFILTERALERTS Dirty Filter Alerts Ye s/N o Yes FILT_AL

GEN STATUS ALERTS General Status Alerts Ye s/N o Yes GENS_AL

REFRIG CIR ALERTS Refrig Circuit Alerts Ye s /No Yes CKT_AL

COMPRESSOR ALERTS Compressor Alerts Ye s/N o Yes COMP_AL

HEATING ALERTS Heating Failure Alerts Ye s/ N o Yes HEAT_AL

INDOOR FAN ALERTS Indoor Fan Alerts Yes /No Yes FAN_AL

ON ACTIVE FAULTS Relay On Active Faults Ye s /No Yes FAULT_AL

SERVICE CONFIG MENU Service Configuration Menu

CMP FRAMEWORK Compressor Framework 0=1CIR 2CMP,

SHUTDWN A1 FIRST Comp A1 Shut down First Ye s/ No No SDWN_A1

SHUTDWN ALD F IRST Comp Loader Shut down 1st Yes/ N o Yes: All except below

IDF CURVE LO RPM IDF Curve Low End RPM 0 to 3000 RPM 189: Size 04 Standard Static

IDF CURVE HI RPM IDF Curve High End RPM 0 to 3000 RPM 1890: Size 04 Standard Static

1=MBB RLY11,
2=MBB RLY06

1=1CMP+LDR,
2=1CMP

1=MBB RLY11 ALM_CHAN

1: All except below
2: 48/50FC 04--- 06

No: 48/50FC 04--- 06

Fan

219: Size 04 Medium Static

Fan
249: Size 04 High Static Fan
190: Size 05 Standard Static

Fan
217: Size 05 Medium Static

Fan
246: Size 05 High Static Fan

230v 1 ph
266: Size 05 High Static Fan

230v 3ph, 460v, 575v
215: Size 06 Standard Static

Fan
239: Size 06 Medium Static

Fan
266: Size 06 High Static Fan

230v 1 ph
284: Size 06 High Static Fan

230v 3ph, 460v, 575v
230: Size 07 Standard Static

Fan
253: Size 07 Medium Static

Fan
284: Size 07 High Static Fan

Fan
2190: Size 04 Medium Static

Fan
2490: Size 04 High Static Fan
1900: Size 05 Standard Static

Fan
2170: Size 05 Medium Static

Fan
2460: Size 05 High Static Fan

230v 1 ph
2660: Size 05 High Static Fan

230v 3ph, 460v, 575v
2150: Size 06 Standard Static

Fan
2390: Size 06 Medium Static

Fan
2660: Size 06 High Static Fan

230v 1 ph
2836: Size 06 High Static Fan

230v 3ph, 460v, 575v
2300: Size 07 Standard Static

Fan
2530: Size 07 Medium Static

Fan
2836: Size 07 High Static Fan

SYSVTYPE

SDWN_ALD

IFMLORPM

IFMHIRPM

70

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

SERVICE CONFIG MENU (cont) Service Configuration Menu

CCH RELAY1 ENABLE CCH Relay 1 Enabled Yes/N o Yes CCHR1_EN

E C O N O P I D --- K P E C O N O P I D --- K P 0.00 to 99.90 2.5 ECONO_P

E C O N O P I D --- K I E C O N O P I D --- K I 0.00 to 99.90 0.12 ECONO_I

E C O N O P I D --- K D E C O N O P I D --- K D 0.00 to 99.90 1 ECONO_D

E C O N O P I D --- R AT E E C O N O P I D --- R A T E 10 t o 180 sec 15 ECONO_DT

F B D P I D --- K P F B D P I D --- K p 0 to 99.99 0.01 FBDPID_P

F B D P I D --- K I FBD PID Ki 0 to 99.999 0 FBDPID_I

F B D P I D --- K D FBD PID Kd 0 to 99.999 0 FBDPID_D

FBD KI RES VAL FBD Ki Reset Val. 0.00 to 99.90 0 FBDKIRES

NEW HARDWARE Quick Menu for New Hardware

UNIT CONTROL TYPE Unit Control Type 0=TSTAT,

SPRH SENS CHANNEL SPRH Assigned Channel 0=None,

IAQ SENSOR CHAN IAQ Assigned Cha nnel 0=None,

OAQ SENSOR CHAN OAQ Assigned Channel 0=None,

OARH SENSOR CHAN OARH Assigned Channel 0=None,

RARH SENS CHANNEL RARH Assigned Channel 0=None,

OACFM SENS CHANNEL OACFM Assigned Channel 0=None,

FIRE SHUTDOWN SW Fire Shutdown Switch 0=NORM OPEN,

HUMSTAT CHANNEL Humidistat Status Chan. 0=None,

FILTER SW CHANNEL Filter Sta tus Sw Channel 0=None,

REMOTE OCC CHAN Remote Occupancy Channel 0=None,

REM.SHUTDOWN CHAN Remote Shutdown Channel 0=None,

COFS CHANNEL COFS Assigned Channel 0=None,

GEN STATUS CHAN General Status Channel 0=None,

1=SPACE SEN,
2=RAT SEN

1=MBB AI06,
2=MBB AI07,
3=MBB AI08,

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08

1=MBB AI06,
2=MBB AI07,
3=MBB AI08,
4=SIOB Ai10

1=NORM CLSD,
2=NO SWITCH

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

0=TSTAT CTRLTYPE

0=NONE SPRHCHAN

0: no FIOP
2: FIOP

0=NONE OAQ_CHAN

0: no FIOP
3: FIOP

0=NONE RARHCHAN

0=NONE OCFMCHAN

2: no FIOP
0: FIOP

0 : N o H u m i di --- M i Z e r F I O P
5 : H um id i --- M i Z e r F I O P

0: No FIOP
1: FIOP

0=NONE RMOCCHAN

0=NONE ROFFCHAN

0: No FIOP
4: FIOP

0=NONE GEN_CHAN

IAQ_CHAN

OARHCHAN

FIRE_CFG

HUMDCHAN

FILTCHAN

COFSCHAN

71

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

NEW HARDWARE (cont) Quick Menu for New Hardware

ENTHALPY SW CHAN Enthalpy Sw Channel 0=None,

FAN STAT CHANNEL Fan Status Channel 0=None,

IAQ OVERIDE SW CH IAQ override sw channel 0=None,

PHASE MON CHANNEL Phase Monitor Channel 0=None,

NETWORK SETTINGS Building Network Configurations Menu

BAS PROTOCOL BAS Protocol Select 0=NONE,

NETWORK TIMEOUT Network Input Timeout 0 to 600 min 30 NETINTO

CCN CCN Network Configuration Menu

BUS NUMBER CCN Bus Number 0 to 239 0 CCNBUS

CCN ELEMENT # CCN Element Number 1 to 239 1 CCNADD

CCN BAUDRATE CCN Baud Rate 0=9600,

BROADCAST ACK? CCN Broadcast Ack’er Ye s/ N o No CCNBCACK

BROADCAST SCHEDL? Global Schedule Broadcst Yes /No No CCN_GSBC

BROADCAST TIME? CCN Time Broadcast Yes/ No No CCNBC

BROADCAST OAT? Broadcast OAT On Network Ye s/N o No OATBC

BROADCAST OARH? Broadcast OARH On Netwrk Ye s/ N o No OARHBC

BROADCAST OAQ? Broadcast OAQ On Network Ye s /No No OAQBC

BROADCAST IAQ? Broadcast IAQ On Network Yes /No No IAQBC

ALLOW G. OVERRIDE Allow Global Overrides Ye s /No Yes GLBLOVER

LOCATIO N Device Location text DEV_LOC

REFERENCE NUMBER Reference number text REF_NUM

BACNET BACnet network configuration menu

MAC ADDRESS BACnet Device Macaddress 1 to 127 01 BAC_MAC

BACNET BAUDRATE BACnet BMS baud rate 0=9600,

AUTO ID SCHEME ALC Auto Id Scheme Yes/ No Yes AUID

BACNET AUTO ID BACnet ID Auto ID Ye s/N o Yes BAC_AUID

BACNET ID BACnet ID Number 0 to 4194302 1610101 BAC_ID

LINKAGE SET TINGS LINKAGE SETTINGS MENU

DEVICE IAQ BACnet device for IAQ 0 to 4194303 1610100 DEVIAQ

OBJECT ID IAQ Object instance for IAQ 0 to 9999 1009 OBJIAQ

COV IAQ Change of value for IAQ 0to60 0 COVIAQ

DEVICE OAQ BACnet device for OAQ 0 to 4194303 1610100 DEVOAQ

OBJECT ID OAQ Object instance for OAQ 0 to 9999 1012 OBJOAQ

COV OAQ Change of value for OAQ 0to60 0 COVOAQ

DEVICE OARH BACnet device for OARH 0 to 4194303 1610100 DEVOARH

OBJECT ID OARH Object instance for OARH 0 to 9999 1022 OBJOARH

COV OARH Change of value for OARH 0to60 0 COVOARH

DEVICE OAT BACnet device for OAT 0 to 4194303 1610100 DEVOAT

OBJECT ID OAT Object instance for OAT 0 to 9999 1003 OBJ OAT

COV OAT Change of value for OAT 0to60 0 COVOAT

DEVICE RARH BACnet device for RARH 0 to 4194303 1610100 DEVRARH

OBJECT ID RARH Object instance for RARH 0 to 9999 30 OBJRARH

COV RARH Change of value for RARH 0to60 0 COVRARH

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=MBB DI12,
2=MBB DI13,
3=MBB DI14,
4=MBB DI02,
5=MBB Y3

1=CCN,
2=BACNET

1=19200,
2=38400

1=19200,
2=38400,
3=57600,
4=76800,
5=115200

x 2=BACNET BMS_CFG

0=NONE ENTHCHAN

0=NONE FNSTCHAN

0=NONE IAQOCHAN

0: No FIOP
3: FIOP

2=38400 BAUDENUM

4=76800 BAC_BAUD

PMR_CHAN

72

APPENDIX A: SystemVut Controller Display

Settings Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS DEFAULT POINT

BACNET (cont) BACnet network configuration menu

DEVICE RAT BACnet device for RAT 0 to 4194303 1610100 DEVRAT

OBJECT ID RAT Object instance for RAT 0 to 9999 1010 OBJRAT

COV RAT Change of value for RAT 0to60 0 COVRAT

DEVICE SPT BACnet device for SPT 0 to 4194303 1610100 DEVSPT

OBJECT ID SPT Object instance for SPT 0 to 9999 2007 OBJ SPT

COV SPT Change of value for SPT 0to60 0 COVSPT

LOCAL_SHEDL_ EDIT Allow Local Sched Edit Ye s /No enum No LCL_ EDIT

SYSTEM TOUCH System Touch Menu

DEVICE INSTANCE System Touch Device Inst 0 to 4194303 160099 DEVST

POLLING RATE Syste m Touch Poll Rate 10 to 60 10 POLLST

SPACE TEMP AI Syst em Touch AI for SPT 0 to 9999 1 AISTSPT

SPACE RH AI Syste m Touch AI for SPRH 0 to 9999 4 AISTSPRH

ZS SENSOR CFG ZS Sensor Configuratio n

ZS1 ADDRESS Zone Sensor 1 Address 0 to 255 255 ZSADDR1

ZS2 ADDRESS Zone Sensor 2 Address 0 to 255 255 ZSADDR2

ZS3 ADDRESS Zone se nsor 3 a ddress 0 to 255 255 ZSADDR3

ZS4 ADDRESS Zone se nsor 4 a ddress 0 to 255 255 ZSADDR4

ZS5 ADDRESS Zone se nsor 5 a ddress 0 to 255 255 ZSADDR5

ZS POLL RATE Zone senso r poll rate 1 to 100 sec 5 ZSPOLLRT

ZS UNIT Zone sensor unit 0=degrees F 0=degrees F ZSUNIT

ZSFRCUNOCENBL ZS Force Unoccup enable Yes / No No ZSFUNEN

ZSFRCUNOCDELAY ZS Force unocc w t dela y Ye s/ N o No ZSFUNWT

ZS TLO CONT ENBL ZS TLO Cont Enable Ye s/N o No ZSTLOEN

TLO SET DURING OC ZS TLO set during occ Yes / No No ZSTLSOC

ZS UI MODE Zone sensor UI Mode 1=Dual Offsets 1=Dual Offsets ZSUIM

NETWORK CHKLIST NETWORK SETUP CHECKLIST 0=Undone,

DISPLAY SETTINGS User Display Configurations Menu

METRIC DISPLAY Metric Display Ye s/N o No DISPUNIT

LANGUAGE Display Language Select 0=English,

CONTRAST ADJUST LCD Contrast Adjustment 1to10 5 LCD_CONT

PAS SWO RD E NA B LE ? User Passwo rd Protection Enable/Disable Enable PA S S_ E BL

VIEW USER PASSWORD View User Password Menu

CHANGE USER PASSWORD Change User Password Menu

QUICK SETUP CONFIG QUICK SETUP CONFIG MENU

TIME Clock Hour and Minute xx:xx TIME

DATE Current Date MM/DD/YYYY DATE

STARTUP DELAY Unit Startup Delay 10 to 600 sec 30 STARTDLY

UNIT CONTROL TYPE Unit Control Type 0=TSTAT,

THERMOSTAT TYPE Thermostat Hardware Type 0=CONV 2C2H,

DIRTY FILTER TIME Change Filter Timer 0 to 9999 hrs 600 FILTLIFE

HEATING STAGE QTY Number of Heating St ages 0to2 2: all except below

VENT METHOD Ventilation Method 0=NONE,

FREE COOL MAX OAT Free Cooling Max OAT 0to90 °F 65 MAXFREET

FIRE SHUTDOWN SW Fire Shut down Sw itch 0=NORM OPEN,

QUICK SET CHKLIST QUICK SETUP CHECKLIST 0=Undone,

1=Perfom,
2=Done

1=Spanish,
2=French,
3=Portuguese

1=SPACE SEN,
2=RAT SEN

1=DIGI 2C2H,
2=CONV 3C2H,
3=DIGI 3C2H

1=ECON,
2=2POS DMPR,
3=ERV,
4=ECON ERV

1=NORM CLSD,
2=NO SWITCH

1=Perfom,
2=Done

0=Undone CHK_NET

0=English LANGUAGE

0=TSTAT CTRLTYPE

0=CONV 2C2 STATTYPE

0: 50 Series without FIOP heaters
1: 48 Series single phase power,

Low Nox Gas Heat,
48FC 04--- 07 Low Heat,
48FC 05--- 07 Med Heat,
50GC 04-- -06 Low Heat,
50GC 04-- -05 Med Heat,
50GC 04 High Heat 230v 3ph and 460v,
50GC 05 High Heat 230v 3ph,
50GC 06 Med Heat 460v and 575v

0: No FIOP
1: Economizer FIOP
2: Two Position Damper FIOP

2: no FIOP
0: FIOP

0=Undone CHK_QUIK

NUMHSTGS

VENTTYPE

FIRE_CFG

73

APPENDIX A: SystemVut Controller Display

Alerts/Faults Main Menu Layou t

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES WRITE STATUS POINT

ALERTS/FAULTS Alerts/Faults Menu

ACTIVE FAULTS Active Faults Menu

ACTIVE ALERTS Active Alert s Menu

HISTORY History Of Faults And Alerts Menu

RESET FAULT/ALERT Reset All Current Alarms Yes/ No Command ALRESET

74

APPENDIX A: SystemVut Controller Display

Service Main Menu Layout

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

SERVICE Service Menu

UNIT TESTS Unit Tests Menu

TEST MODE ServiceTestModeEnable On/Off Command

SERVICE TEST Service Test Menu

INDEPENDENTS INDEPENDENT TEST MENU

ECON POS TEST Economizer Position Test 0 to 100 % Command S_DAMPER

BUMP COMP A1 TEST Compressor Bump A1 Test On/Off Command S_BMPA1

RH DIS VALVE TEST Rht Dischg Valve Rly Tst On/Off Command S_RDV_A

RH LIQ VALVE TEST Reheat Liq Valv Rly Test On/Off Command S_ RLV_A

CL LIQ VALVE TEST Cooling Liq Valv Test On/Off Command S_CLV_A

CCH RELAY 1 TEST Crankcase Heater 1 test On/Off Command S_CCHR1

ALARM RELAY TEST Alarm Output Relay Test On/Off Command S_ALARM

PE1 RELAY TEST Power Exha ust 1 Test On/Off Command S_PE_1

PE2 RELAY TEST Power Exha ust 2 Test On/Off Command S_PE_2

2POS/ERV RLY TEST 2Position/ERV Relay Test On/Off Command S_ER V2P

FAN TESTS Indoor and Outdoor Fan tests Menu

IDF SPEED TEST Indoor Fan Speed Test 0 to 100 % Command S_IDFSPD

CONVERTED IDF RPM Converted IDF Speed 0 t o 5000 RPM IFRPMTST

IDF MANUAL TRANS IDF Manual Transition Yes/ No Command S_IDF TRN

COOL TESTS Cooling Test Menu

COOL A1 TEST Cooling W/Comp.A1 Test On/Off Command S_COOLA1

CIR A LOADER TEST Cooling W/Comp.ALD Test On/Off Command S_COLALD

IDF SPEED TEST Indoor Fan Speed Test 0 to 100 % Command S_IDFSPD

ODF RELAY TEST ODF Speed Relay Test On/Off Command S_ OFRSPD

HUMIDIMIZER TEST Humidimizer Level Test 0=Off,

HEAT TESTS Heating Test Menu

HEAT 1 TEST Heating Stage 1 Test On/Off Command S_HEAT1

HEAT 2 TEST Heating Stage 2 Test On/Off Command S_HEAT2

IDF SPEED TEST Indoor Fan Speed Test 0 to 100 % Command S_IDFSPD

AUTOMATIC TEST Automatic Test Menu

AUTO INDP TEST AUTO INDEPENDENT TEST Yes / No Command AUTOINDP

AUTO COOL TEST RUN AUTO COOLING TEST Ye s /No Command AUTOCOOL

AUTO HEAT TEST RUN AUTO H EATING TEST Ye s/ N o Command AUTOHEAT

AUTO SYSTEM TEST RUN AUTO SYSTEM TEST Yes / No Command AUTOSYS

UNIT INFORMATION Unit Information Menu

MODEL # Equipment Model number xxxxxxxxxxxxxxxxxx Command EQ_MOD

SERIAL # Equipment Serial number xxxxxxxxxx Command EQ_SER

VERSIONS Versions Menu

MAIN APP Application SW Version CESR131656--- 01--- xx FW_CESR

BOOTLOADER Bootloader SW Version CESR131659--- 01--- 03 BL_CESR

USER MEASURED DATA User Measured Data Menu

SUPPLY VOLTAGE L1 Supply Voltage Leg 1 0 to 700 V Command L1VOLTS

SUPPLY VOLTAGE L2 Supply Voltage Leg 2 0 to 700 V Command L2VOLTS

SUPPLY VOLTAGE L3 Supply Voltage Leg 3 0 to 700 V Command L3VOLTS

COMP A1 AMPS L1 Comp A1 Amps Leg 1 0 to 100 A Command CA1L1_A

COMP A1 AMPS L2 Comp A1 Amps Leg 2 0 to 100 A Command CA1L2_A

COMP A1 AMPS L3 Comp A1 Amps Leg 3 0 to 100 A Command CA1L3_A

E.HEAT AMPS L1 Elec. Heat Amps Leg 1 0 to 100 A Command EHTL1_A

E.HEAT AMPS L2 Elec. Heat Amps Leg 2 0 to 100 A Command EHTL2_A

E.HEAT AMPS L3 Elec. Heat Amps Leg 3 0 to 100 A Command EHTL3_A

GAS SUPPLY TYPE Gas Supply Type 0=NATURAL,

GAS INLET PRESS GAS INLET PRESSURE 0to20 Hg Command GASPRESS

STAGE 1 GAS PRESS STAGE 1 GAS PRESSURE 0to20 Hg Command HT1PRESS

STAGE 2 GAS PRESS STAGE 2 GAS PRESSURE 0to20 Hg Command HT2PRESS

CONTINUE? Start Diag Report Yes/ No Command GO_DIAG

RUN HOURS & CYCLES Run Hours & Cycles Menu

RUN HOURS DATA MENU Run hours menu

2POS/ERV RUN HOUR 2Position/ERV Run Hours xxxxxx.x hrs HR_ERV2P

COMP A1 RUN HOURS Compressor A1 Run Hours xxxxxx.x hrs HR_A1

CMP ALD RUN HOURS CMP A1 Loader Run Hours xxxxxx.x hrs HR_ALDR

ALM RELAY HOURS Alarm Relay Run Hours xxxxxx.x hrs HR_ALM

CCH RELAY HOURS CCH1 Relay Run Hours xxxxxx.x hrs HR_CCH R1

1=Subcool,
2=Reheat

1=LP

Command S_HMZLEV

Command GASTYPE

75

APPENDIX A: SystemVut Controller Display

Service Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

RUN HOURS & CYCLES (cont) Run Hours & Cycles Menu

ECON RUN HOURS Econ Damper Run Hours xxxxxx.x hrs HR_DAMP

FULL LOAD HOURS Unit Full Load Run Hours xxxxxx.x hrs HR_FLOAD

FREE COOL H OURS Free Cooling Run Hours xxxxxx.x hrs HR_FREEC

HEAT 1 RUN HOURS Heat Stage 1 Run Hours xxxxxx.x hrs HR_HTR_1

HEAT 2 RUN HOURS Heat Stage 2 Run Hours xxxxxx.x hrs HR_HTR_2

IDF RUN HOURS Indoor Fan Run Hours xxxxxx.x hrs HR_IDF

MAX IDF RUN HOURS Max Fan Speed Run Hours xxxxxx.x hrs HR_MAXF

ODF RELAY HOURS ODF Relay Run Hours xxxxxx.x hrs HR_OFR

PE1 RELAY HOURS Power Exhaust 1 Run Hours xxxxxx.x hrs HR_PE_1

PE2 RELAY HOURS Power Exhaust 2 Run Hours xxxxxx.x hrs HR_PE_2

RDV_A RUN HOURS RDV_A Run Hours xxxxxx.x hrs HR_RDV_A

RLV_A RUN HOURS RLV_A Run Hours xxxxxx.x hrs HR_RLV_A

CLV_A RUN HOURS CLV_A Run Hours xxxxxx.x hrs HR_CLV_A

SUBCOOLING HOURS Reheat leve l 1 Run Hrs xxxxxx.x hrs HR_RQHL1

HOT GAS RH HOURS Reheat level 2 Run Hrs xxxxxx.x hrs HR_RQHL2

TEST MODE HOURS Service Test Run Hours xxxxxx.x hrs HR_STEST

VENT IDF H OURS Vent IDF Run Hours xxxxxx.x hrs HR_VENTF

START COUNT DATA MENU Start Counts menu

2POS/ERV STARTS 2Position/ERV Starts xxxxxx ST_ ERV2P

COMP A1 STARTS Compressor A1 Starts xxxxxx ST_A1

CMP ALD STARTS CMP A1 Loader Starts xxxxxx ST_ALDR

ALM RELAY STARTS Alarm Relay Starts xxxxxx ST_ALM

ALM RESET COUNTS Alarm Reset Counts xxxxxx ST_ALRST

CCH RELAY STARTS CCH1 Relay Starts xxxxxx ST_CCHR1

DAMPER STARTS Economizer Damper Starts xxxxxx ST_DAMP

FULL LOAD STARTS Unit Full Load Starts xxxxxx ST_FLOAD

FREE COOL STARTS Free Cooling Starts xxxxxx ST_FREEC

HEAT 1 STARTS Heat Stage 1 Starts xxxxxx ST_HTR_1

HEAT 2 STARTS Heat Stage 2 Starts xxxxxx ST_HTR_2

IDF STARTS Indoor Fan Starts xxxxxx ST_IDF

MAX IDF SPD START Max IDF Speed St arts xxxxxx ST_ MAXF

ODF RELAY STARTS ODF Relay Starts xxxxxx ST_OFR

PE1 RELAY STARTS Po we r Ex hau st 1 Start s xxxxxx ST_PE_ 1

PE2 RELAY STARTS Po we r Ex hau st 2 Start s xxxxxx ST_PE_ 2

POR COUNT Power Cycle Counts xxxxxx ST_POR

RDV A STARTS RDV_A Starts xxxxxx ST_RDV_A

RLV_A STARTS RLV_A Starts xxxxxx ST_RLV_A

CLV_A STARTS CLV _A Starts xxxxxx ST_CLV_A

SUBCOOL STARTS Reheat level 1 Starts xxxxxx ST_RQHL1

HOT GAS RH STARTS Reheat level 2 Starts xxxxxx ST_RQHL2

TEST MODE STARTS Service Test Starts xxxxxx ST_STEST

VENT FAN STARTS Ventilation Fan Starts xxxxxx ST_VENTF

RESET COUNTS MENU Reset Counts menu

2POS/ERV RESETS 2Position/ERV ResetCount xxxxxx RS_ERV2P

COMP A1 RESET QTY Comp A1 Resets Count xxxxxx RS_A1

CMP ALD RESET QTY A1 Loader Resets Count xxxxxx RS_ALDR

ALMRLYRESETQTY Alarm Relay Resets Count xxxxxx RS_ALM

ALM RESET RESETS Alarm Reset Resets Count xxxxxx RS_ALRST

CCH RELAY RESETS CCH1 Relay Resets Count xxxxxx RS_CCHR1

DAMPER RESET QTY Econ Damper Reset s Count xxxxxx RS_DAMP

FULL LOAD RESETS Full Load Resets Count xxxxxx RS_FLOAD

FREE COOL RESETS Free Cooling Reset Count xxxxxx RS_FREEC

HEAT 1 RESET QTY Heat Stage 1 Reset Count xxxxxx RS_HTR_1

HEAT 2 RESET QTY Heat Stage 2 Reset Count xxxxxx RS_HTR_2

76

APPENDIX A: SystemVut Controller Display

Service Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

RESET COUNTS MENU (cont) Reset Counts menu

IDF RESET QTY Indoor Fan Reset Count xxxxxx RS_IDF

MAX IDF RESET QTY Max IDF Spd Resets Count xxxxxx RS_MAXF

ODF RELAY RESETS ODF Relay Resets Counts xxxxxx RS_OFR

PE1 RESET QTY P.Exhaust 1 Resets Count xxxxxx RS_PE_1

PE2 RESET QTY P.Exhaust 2 Resets Count xxxxxx RS_PE_2

POR RESET QTY Power Cy cle Resets Count xxxxxx RS_POR

RDV_A RESET QTY RDV_A Reset Count xxxxxx RS_RDV_A

RLV_A RESET QTY RLV_A Reset Count xxxxxx RS_RLV_A

CLV_A RESET QTY CLV_A Reset Count xxxxxx RS_CLV_A

SUBCOOL RESET QTY Reheat lev 1 Rst Count xxxxxx RS_RQHL1

HGRH RESET QTY Reheat lev 2 Rst Count xxxxxx RS_RQHL2

TEST MODE RESETS Service Test Reset Count xxxxxx RS_STEST

VENT IDF RESETS Vent IDF Resets Co unt xxxxxx RS_VENTF

POWER RESET HISTORY Power On Reset History Menu

POWRES00 Power Reset Event 00 mm/dd/yy, hh:mm:ss POWRES00

POWRES01 Power Reset Event 01 mm/dd/yy, hh:mm:ss POWRES01

POWRES02 Power Reset Event 02 mm/dd/yy, hh:mm:ss POWRES02

POWRES03 Power Reset Event 03 mm/dd/yy, hh:mm:ss POWRES03

POWRES04 Power Reset Event 04 mm/dd/yy, hh:mm:ss POWRES04

POWRES05 Power Reset Event 05 mm/dd/yy, hh:mm:ss POWRES05

POWRES06 Power Reset Event 06 mm/dd/yy, hh:mm:ss POWRES06

POWRES07 Power Reset Event 07 mm/dd/yy, hh:mm:ss POWRES07

POWRES08 Power Reset Event 08 mm/dd/yy, hh:mm:ss POWRES08

POWRES09 Power Reset Event 09 mm/dd/yy, hh:mm:ss POWRES09

ALARM RESET HISTORY Alarm Reset History Menu

ALMRES00 Alarm Reset Event 00 mm/dd/yy, hh:mm:ss ALMRES00

ALMRES01 Alarm Reset Event 01 mm/dd/yy, hh:mm:ss ALMRES01

ALMRES02 Alarm Reset Event 02 mm/dd/yy, hh:mm:ss ALMRES02

ALMRES03 Alarm Reset Event 03 mm/dd/yy, hh:mm:ss ALMRES03

ALMRES04 Alarm Reset Event 04 mm/dd/yy, hh:mm:ss ALMRES04

ALMRES05 Alarm Reset Event 05 mm/dd/yy, hh:mm:ss ALMRES05

ALMRES06 Alarm Reset Event 06 mm/dd/yy, hh:mm:ss ALMRES06

ALMRES07 Alarm Reset Event 07 mm/dd/yy, hh:mm:ss ALMRES07

ALMRES08 Alarm Reset Event 08 mm/dd/yy, hh:mm:ss ALMRES08

ALMRES09 Alarm Reset Event 09 mm/dd/yy, hh:mm:ss ALMRES09

ALMRES10 Alarm Reset Event 10 mm/dd/yy, hh:mm:ss ALMRES10

ALMRES11 Alarm Reset Event 11 mm/dd/yy, hh:mm:ss ALMRES11

ALMRES12 Alarm Reset Event 12 mm/dd/yy, hh:mm:ss ALMRES12

ALMRES13 Alarm Reset Event 13 mm/dd/yy, hh:mm:ss ALMRES13

ALMRES14 Alarm Reset Event 14 mm/dd/yy, hh:mm:ss ALMRES14

ALMRES15 Alarm Reset Event 15 mm/dd/yy, hh:mm:ss ALMRES15

ALMRES16 Alarm Reset Event 16 mm/dd/yy, hh:mm:ss ALMRES16

ALMRES17 Alarm Reset Event 17 mm/dd/yy, hh:mm:ss ALMRES17

ALMRES18 Alarm Reset Event 18 mm/dd/yy, hh:mm:ss ALMRES18

ALMRES19 Alarm Reset Event 19 mm/dd/yy, hh:mm:ss ALMRES19

HARDWARE Hardware Information Menu

HARDWARE INPUTS Hardware inputs menu

OAT SENSOR VALUE Outdoor Air Temp Sensor xxx.x °F OAT_LOC

RAT SENSOR VALUE Return Air Temp Sensor xxx.x °F RAT_LOC

SPT SENSOR VALUE Space Temperature Sensor xxx.x °F SPT_LOC

SPTO SENSOR VALUE Local Space Temp Offset xxxx ΔF SPTO_LOC

SPRH SENSOR VALUE SPRH Sensor Value 0 to 100 % SPRH_LOC

OARH SENSOR VALUE OARH Sensor Value 0 to 100 % OARH_LOC

RARH SENSOR VALUE RARH Sensor Value 0 to 100 % RARH_LOC

IAQ SENSOR VALUE IAQ Sensor value xxxx PPM IAQ_LOC

OAQ SENSOR VALUE OAQ Sensor Value xxxx PPM OAQ_LOC

OACFM SENSOR VALUE OACFM Sensor value xxx.x CFM OCFM_LOC

ASSIGNED INPUTS/OUPUTS Assigned Input/Output Channels

ALARM RESET DATA Reset Alarm Resets Data Yes/ No Comma nd CR_ALRST

77

APPENDIX A: SystemVut Controller Display

Service Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

HARDWARE (cont) Hardware Information Menu

AI06 FUNCTION Assigned AI06 Function 0=None,

AI07 FUNCTION Assigned AI07 Function MBBAI07F

AI08 FUNCTION Assigned AI08 Function MBBAI08F

DI02 FUNCTION Assigned DI02 Function 0=None,

MBB Y3 FUNCTION Assigned MBB Y3 Funct ion MBBDI09F

DI12 FUNCTION Assigned DI12 Function MBBDI12F

DI13 FUNCTION Assigned DI13 Function MBBDI13F

DI14 FUNCTION Assigned DI14 Function MBBDI14F

RELAY 06 FUNCTION Assigned Rly 06 Function 0=None,

RELAY 11 FUNCTION Assigned Rly 11 Function MBBRY11F

MBB PART # MBB Part Number CEPL131117--- xx---R BD_CEPL

MBB PP # MBB Program Part Number CEPP130644--- xx--- xx --- xx---R BD_CEPP

MBB SERIAL # Base Board serial number xxxxMxxxxx BD_SER

CALIBRATION Calibration Menu

OATTRIMOFFSET OAT Sensor Trim Offset ---10 to 10 °F Configurable OAT_TRIM

RAT TRIM OFFSET RAT Sensor Trim Offset ---30 to 30 °F Configurable RAT_TRIM

FST TRIM OFFSET FST Sensor Trim Offset --- 10 to 10 °F Configurable FST_TRIM

SPTTRIMOFFSET SPT Sensor Trim Offset --- 30 to 30 °F Configurable SPT_TRIM

SLIDER SEN. TRIM SPTO Sensor Offset Trim --- 1 t o 1 °F Configurable SPTOTRIM

SPRH TRIM OFFSET SPRH Sensor Trim Offset --- 15 to 15 % Configurable SPRHTRIM

IAQ TRIM OFFSET IAQ sensor trim offset --- 200 to 200 PPM Configurable IAQ_TRIM

OAQ TRIM OFFSET OAQ Sensor Trim Offset --- 200 to 200 PPM Configurable OAQ_TRIM

OARH TRIM OFFSET OARH Sensor Trim Offset --- 15 to 15 % Configurable OARHTRIM

RARH TRIM OFFSET RARH Sensor Trim Offset --- 15 to 15 % Configurable RARH TRIM

CIR.A SSP TRIM Cir.A SSP Sensor Trim --- 50 to 50 PSI Configurable SSPATRIM

CIR.A SDP TRIM Cir.A SDP Sensor Trim ---50 to 50 PSI Configurable SDPATRIM

ECO FEEDBACK TRIM Econ Fdback Trim Offset ---15 to 15 % Configurable EC1DTRIM

OACFMTRIMOFFSET OACFM sensor trim offset --- 200 to 200 CFM Configurable OCFMTRIM

COMMISSION REPORTS Commission Report Menu

SYSTEM STARTUP CHECKLIST SYSTEM STARTUP CHECKLIST MENU

QUICK SET CHKLIST QUICK SETUP CHECKLIST 0=Undone,

NETWORK CHKLIST NETWORK SETUP CHECKLIST 0=Undone,

SYSTEM AUTOTEST Checklist Auto Test 0=Undone,

ADVANCED SERVICE Advanced Service Restricted Access Menu

RESTORE DEFAULTS? KEEPCONFIG SCREEN POP --- UP Yes/N o Command RESFDFLT

EDIT MODEL NUMBER Edit Equipment Model Number

EDIT SER NUMBER Edit Equip Ser Num Menu

CLEAR COMPONENT DATA RESET COMPONENT DATA MENU

2POS/ERV DATA Reset 2Position/ERV Data Ye s /No Command CR_ERV2P

COMP A1 DATA Reset Compressor A1 Da ta Ye s/N o Command CR_A1

ALARM RELAY DATA Reset Alarm Rela y Data Ye s/N o Command CR_ALM

CCH RELAY DATA Reset CCH1 Relay Data Ye s / No Command CR_ CCHR1

ECON DAMPER DATA Reset Econ Damper Data Yes/ No Command CR_DAMP

FULL LOAD DATA Reset Full Load Data Yes / No Command CR_FLOAD

FREE COOL DATA Reset Free Cooling Data Ye s/N o Command CR_FREEC

HEAT 1 D ATA ResetHeatStage1Data Yes /No Command CR_HTR_1

1=IAQ,
2=OARH,
3=RARH,
4=OAQ,
5=SPRH,
6=OACFM

1=COFS,
2=REMOCC,
3=REMOFF,
4=FILTER,
5=ENTHALPY,
6=GEN STAT,
7=HUMIDISTAT,
8=IAQOVRD,
9=FANSTATUS,
10=PHASEMON

1=ALM Relay,
2=PE1
,3=PE2

1=Perform,
2=Done

1=Perform,
2=Done

1=Perform,
2=Done

Configurable CHK_QUIK

Configurable CHK_NET

Configurable CHK_ATST

MBBAI06F

MBBDI02F

MBBRY06F

78

APPENDIX A: SystemVut Controller Display

Service Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

ADVANCED SERVICE (cont) Advanced Service Restricted Access Menu

HEAT 2 D ATA ResetHeatStage2Data Yes /No Command CR_HTR_2

IDF RUN DATA Reset Indoor Fan Data Ye s /N o Command CR_IDF

ODF RELAY DATA Reset ODF Speed Relay Yes /N o Command CR_OFR

IDF MAX SPD DATA Reset Max Fan Speed Data Yes / No Command CR_MAXF

PE1 RELAY DATA Reset Pwr Exhaust 1 Data Ye s /No Command CR_PE_1

PE2 RELAY DATA Reset Pwr Exhaust 2 Data Ye s /No Command CR_PE_2

POWER RESET DATA Reset Power Resets Data Ye s/N o Command CR_POR

TEST MODE DATA Reset Service Test Data Ye s/ N o Command CR_STEST

VENT IDF DATA ResetVentIDFData Yes / No Command CR_ VENTF

RESTRICTED ACCESS Restricted Access Only

IDF CURVE LO PWM IDF Curve Low End PWM 0 to 100 % Configura ble IFMLOPWM

IDF CURVE HI PWM IDF Curve High End PWM 0 to 100 % Configurable IFMHIPWM

MIN SPEED TIME IDF Start Speed Time xxx sec Configurable IDFSSTIM

MIN START SPEED IDF Min Start RPM xxxx RPM Configurable IDFSTSPD

79

APPENDIX A: SystemVut Controller Display

Inputs Main Menu Layout

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

INPUTS Inputs Menu

TEMPERATURES Temperatures Menu

SUPPLY AIR TEMP Supply Air Temperature xxx..x °F SAT

OUTDOOR AIR TEMP Outdoor Air Temperature xxx.x °F For cible OAT

RETURN AIR TEMP Return Air Temperature xxx.x °F Forcible RAT

SPACE TEMPERATURE Space Temperature xxx.x °F For cible SPACE_T

SLIDER OFFSET VAL Space Temperature Offset xx.x ΔF For cible SPTO

CIR.A SUC TEMP Cir.A Sat.Suction T emp xxx.x °F SST_A

CIR.A DIS. TEMP Cir.A Sat.Discharge Temp xxx.x °F SDT_A

FAN SUPPLY TEMP Fan Supply Air Temp xxx.x °F FST

PRESSURES Pressures Menu

CIR.A SUC. PRESS Cir.A Suction Pressure xxx.x PSI SSP_A

CIR.A DIS. PRESS Cir.A Discharge Pressure xxx.x PSI SDP_ A

CIR.A PRESS RATIO Circuit A Pressure Ratio xx.xx CIRA_PR

BAROMETRIC PRESS Barometric Pressure xx.xx Hg Forcible BARP

THERMOSTAT Thermostat Inputs menu

TSTAT G INPUT Thermost at G Input On/Off Forcibl e G

TSTAT Y1 INPUT Thermostat Y1 Input On/Off For cible Y1

TSTAT Y2 INPUT Thermostat Y2 Input On/Off For cible Y2

TSTAT W1 INPUT Thermostat W1 Input On/Off For cible W1

TSTAT W2 INPUT Thermostat W2 Input On/Off For cible W2

SWITCH INPUTS Switch Inputs Menu

IGC FAN REQUEST IG C Fan On Request (IFO) On/Off IGC_IFO

CIR.A HPS Cir.A High Pre ssure Sw Open/Close CIRA_HPS

HUMIDISTAT Humidistat Input On/Off Forcible HUMDSTAT

IDF LIMIT SWITCH IDF Manual Limit Switch Open/Close IDF_LSM

FIRE SHUTDOWN Fire Shutdo wn Swit ch Alarm/Normal Forcible FIREDOWN

COFS COFS Switch State High/Low Forcib le COFS

PHASE MONITOR SW Phase Monitor Switch Alarm/Normal Forcible PMR_STAT

FILTER STATUS SW Filter Status Sw itch Dirty/Clean Forcibl e FILTSTAT

REMOTE OCC SWITCH Remote Occupancy Switch On/Off Forcible REMOCC

REMOTE SHUTDOWN Remot e Shutdo wn Swit ch On/Off Forcible REMSHUT

FAN STATUS SWITCH Fan Status Switch On/Off Forcible FAN_STAT

GENERAL STATUS SW General Status Switch Alarm/Normal Fo rcible GENSTAT

IAQ OVRRD SWITCH IAQ Override Switch On/Off Forcible IAQ_OVRS

ENTHALPY SWITCH Enthalpy Switch High/Low For cible ENTH_SW

ANALOG INPUTS ANALOG Inputs Menu

ECON ACT POSITION Damper Actual Position 0 to 100 % DAMPPOS

SPRH LEVEL Space Relative Humidity 0 to 100 % Fo rcible SPRH

OARH LEVEL OA Relative Humidity 0 to 100 % Fo rcib le OARH

RARH LEVEL RA Relative Humidity 0 to 100 % Forcible RARH

IAQ LEVEL Indoor Air Quality Level xxxx PPM For cible IAQ

OAQ LEVEL OA Quality Level xxxx PPM Forcible OAQ

OUTDOOR AIR CFM Outdoor Air in CFM 0 to 8000 CFM Forcible OACFM

GENERAL INPUTS General Inputs Menu

FILTER TIME LEFT Filter hour remaining xxxx hrs FILTLEFT

RESET FILTER TIME Reset Filter Timer Yes / No Command RESETFLT

OUTDOOR ENTHALPY Outdoor Air Enthalpy --- 9.6 to 334.2 BTU/LB Forcib le OA_ENTH

RETURN ENTHALPY Return Air Enthalpy --- 9.6 to 334.2 BTU/LB Forcible RA_ENTH

DIFF AIR QUALITY Differential Air Quality --- 5000 to 5000 PPM AQ_DIFF

NETWORK Network Menu

BMS OCC REQUEST BMS Occupancy Request 0=UNOCC,

LINKAGE OCC REQ Linkage Occupied Request 0=Unocc,

OAT NETWORK VALUE Network OAT Value xxx.x °F Forci ble OAT_NET

RAT NETWORK VALUE Network Return Air Temp xxx.x °F Forcible RAT_NET

SPT NETWORK VAL . Netwo rk Space Temp Value xxx.x °F For cible SPT_NET

SPRH NETWORK VAL Network SPRH Value 0 to 100 % Fo rcible SPRH_NET

OARH NETWORK VAL. Network OARH Value 0 to 100 % For cible OARH_NET

RARH NETWORK VAL. Network RARH Value 0 to 100 % Forcible RARH_NET

IAQ NETWORK VALUE Network IAQ Value xxxx PPM For cible IAQ_NET

OAQ NETWORK VALUE Net work OAQ Value xxxx PPM Forcible OAQ_NET

1=OCCUPIED,
2=DISABLED

1=Occupied,
2=Disabled

Forcible BMS_OCC

Forcible LNK_OCC

80

APPENDIX A: SystemVut Controller Display

Inputs Main Menu Layout (cont)

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

NETWORK (cont) Network Menu

OACFM NETWORK VAL Net work OACFM Value xxx.x CFM Forcible OCFM_NET

ZS SENSOR INFO ZS Sensor Information

ZS SPACE TEMP Zone Sensor Temp Out 0 °F ZSZT

ZS SPACE RH Zone Sensor Humidity Out 0 % ZSSPRH

ZS SPOFFSET ZS Setpoint OffsetOutput 0 ΔF ZSSPTO

ZS OVR TIME LEFT ZS Override time remain 0 min ZSOTR

ZS TEMPERATURE ZS Space Temperature

ZS1 TEMPERATURE Zo ne Sensor 1 Temp 0 °F ZS1ZT

ZS2 TEMPERATURE ZS2 Temperature 0 °F ZS2ZT

ZS3 TEMPERATURE ZS3 Temperature 0 °F ZS3ZT

ZS4 TEMPERATURE ZS4 Temperature 0 °F ZS4ZT

ZS5 TEMPERATURE ZS5 Temperature 0 °F ZS5ZT

ZS HUMIDITY ZS Space Humidity

ZS1 HUMIDITY ZS1 Humidity 0 % ZS1ZHUM

ZS2 HUMIDITY ZS2 Humidity 0 % ZS2ZHUM

ZS3 HUMIDITY ZS3 Humidity 0 % ZS3ZHUM

ZS4 HUMIDITY ZS4 Humidity 0 % ZS4ZHUM

ZS5 HUMIDITY ZS5 Humidity 0 % ZS5ZHUM

ZS CSP OFFSET ZS Cool Set Point Offset

ZS1 CSP OFFSET ZS1 cool setpoint offset 0 ΔF ZS1C SOFF

ZS2 CSP OFFSET ZS2 cool setpoint offset 0 ΔF ZS2C SOFF

ZS3 CSP OFFSET ZS3 cool setpoint offset 0 ΔF ZS3C SOFF

ZS4 CSP OFFSET ZS4 cool setpoint offset 0 ΔF ZS4C SOFF

ZS5 CSP OFFSET ZS5 cool setpoint offset 0 ΔF ZS5C SOFF

ZS HSP OFFSET ZS Heat Set Point Offset

ZS1 HSP OFFSET ZS1 Heat Setpoint Offset 0 ΔF ZS1HSOFF

ZS2 HSP OFFSET ZS2 Heat Setpoint Offset 0 ΔF ZS2HSOFF

ZS3 HSP OFFSET ZS3 Heat Setpoint Offset 0 ΔF ZS3HSOFF

ZS4 HSP OFFSET ZS4 Heat Setpoint Offset 0 ΔF ZS4HSOFF

ZS5 HSP OFFSET ZS5 Heat Setpoint Offset 0 ΔF ZS5HSOFF

ZS OCC TIME OVER ZS Occ Timed Override

ZS1 OCC TIME OVER ZS1 Override time remain 0 min ZS1OTR

ZS2 OCC TIME OVER ZS2 Override time remain 0 min ZS2OTR

ZS3 OCC TIME OVER ZS3 Override time remain 0 min ZS3OTR

ZS4 OCC TIME OVER ZS4 Override time remain 0 min ZS4OTR

ZS5 OCC TIME OVER ZS5 Override time remain 0 min ZS5OTR

81

APPENDIX A: SystemVut Controller Display

Outputs Main Menu Layout

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

OUTPUTS Outputs Menu

GENERAL OUTPUTS General Outputs Menu

COMMANDED IDF RPM IDF Commanded RPM xxxx RPM FSPD_RPM

ECON CMD POSITION Econo Commanded Position 0 to 100 % Fo rcib le DAMPCMD

CCH RELAY CCH Relay 1 State On/Off CCHR1

PE1 RELAY Power Exhaust 1 Relay On/Off Forcible PE1

PE2 RELAY Power Exhaust 2 Relay On/Off Forcible PE2

ALARM RELAY Alarm Output Relay State On/Off Forcible ALMOUT

2POS/ERV RELAY 2 --- Pos Damper/ERV relay On/Off Forcible ERV_2POS

COOLING OUTPUTS Cooling Outputs Menu

COMPRESSOR A1 Circuit A Compressor 1 On/Off COMP_ A1

COMP A LOADER Circuit A CMP A1 Loa der On/Off COMP_ALD

ODF SPEED RELAY Outdoor Fan Speed Relay On/Off OFR

RH DISCH VALVE Reheat Dischg Valve CirA On/Off RDV_A

RH LIQUID VALVE Reheat Liquid Valve CirA On/Off RLV_A

COOL LIQUID VALVE Cooling Liq Valve CirA On/Off CLV_A

HEATING OUTPUTS Heating Outputs Menu

HEAT 1 RELAY Heat Stage 1 Relay On/Off HEAT_1

HEAT 2 RELAY Heat Stage 2 Relay On/Off HEAT_2

USB Main Menu Layout

DISPLAY TEXT EXPANDED DISPLAY TEXT VALUES UNITS WRITE STATUS POINT

USB USB Menu

DATA ACQUISITION Data Acquisition Menu

TREND STATUS USB TREND STATUS 0=IDLE,

TREND DURATION USB TREND DURATION 0=1 MINUTE,

TREND RATE USB TREND RATE 1 t o 300 Comma nd TRNDRATE

TREND POINTS FROM USB TREND POINTS FROM 0=FILE,

TREND FROM USB FILE? TREND FROM USB FILE MENU

TREND FROM PRELIST? TREND FROM PRELIST MENU

EQUIP PERFORMANCE TREND EQUIP PERFORMANCE On/Off Command TRNDEQPR

GEN. INPUT/O UTPUT TREND GEN INPUTS/OUTPUTS On/Off Command TRNDIO

COOL PERFORMANCE TREND COOL PERFORMANCE On/Off Command TRNDCLPR

HEAT PERFORMANCE TREND HEAT PERFORMANCE On/Off Command TRNDH TPR

COOL DIAGNOSTIC TREND COOLING DIAGNOSTIC On/Off Command TRNDCLDG

IDF DIAGNOSTIC TREND IDF DIAGNOSTIC On/Off Command TRNDIDF

VENT DIAGNOSTIC TREND VENTILATION On/Off Command TRNDVENT

TREND GO? Start USB Trending Yes/ No Command TREND_EN

SAVE CONFIGS TO FILE Save Configuration to file

SAVE CONFIGS Make Config Backup File Start/Stop Command DDBCKUP

SAVE CONFIG STATUS Backup File is ready 0=IDLE,

SAVE CONFIGS FROM FILE Save Configuration from file

FIND CONF IG FILE USB Find Restore File Ye s/ N o Command BACKFILE

FILE TRANSFER File Transfer Menu

BACKUP SERVICE FILES BACKUP SERVICE FILES

UPGRADE SOFTWARE Upgrade Software Menu

FIND APPLICATION FILE USB search for app file Ye s/ N o Command APPFILE

1=TRENDING,
2=NO POINTS,
3=USB FULL

1=5 MINUTES,
2=15 MINUTES,
3=30 MINUTES,
4=1 HOUR,
5=3 HOURS,
6=8 HOURS,
7=12 HOURS,
8=1 DAYS,
9=1.5 DAYS,
10=2 DAYS,
11=3 DAYS,
12=5 DAYS,
13=1 WEEK,
14=2 WEEK,
15=4 WEEK,
16=USB FULL

1=LIST

1=SUCCESS,
2=FAILURE

Command TRNDDUR

Command TRNDPNTS

TRNDSTAT

BACKUP_R

82

APPENDIX B: SystemVut Controller Text Point Reference

SystemVu Display Name = MODE

SystemVu Text point = MODETEXT

SystemVu Numeric point = SYSMODE

MODETEXT

OFF 1

COOL 2

HEAT 3

VENT 4

TEST 5

SystemVu Display Name = SUB---MODE

SystemVu Text point = SU BMTEXT

SystemVu Numeric point = SUB_MODE

SUBMTEXT

ECON FREE COOLING 3

UNOCC. FREE COOL 4

MECH. COOLNG 5

ECON/MECH COOLING 6

DEHUM/MECH COOLING 7

DEHUMIDIFYING 8

DEHUM PREVENTED 9

COOLING PREVENTED 10

SHUT TING COOL OFF 11

HEATING 13

HEATING PREVENTED 14

SHUTTING HEAT OFF 15

OA TEMPERING 16

MODE TIMEGUARD 19, 26

SUPPLY FAN ON 20

MANUAL TEST 23

AUTO TEST 24

SHUTTING TEST OFF 25

IDLE --- NO DEMAND 27

UNIT DISABLED 28

URGENT SHUTDOWN 29

SAFETY CONTROL 30

STARTING UP 31

SYS_MODE

SUB_MODE

SystemVu Display Name = VENT MODE

SystemVu Text point = VENT TEXT

SystemVu Numeric point = VENTSTAT

VENTTEXT

SUPPLY FAN OFF 0

CIRCULATION 1

P R E --- O C C P U R G E 2

IAQ OVERRIDE 3

MINIMUM POSITION 4

UNDER VENTILATION 5

OVER VENTILATION 6

DCV POSITION 7

FREECOOL POSITION 8

TESTING 9

SystemVu Display Name = DEMAND

SystemVu Text point = SYS_DMDT

SystemVu Numeric point = SYS_DMD

SYSDMDT

NO DEMAND 0

DEHUM 4, 12

FAN ONLY 8

LOW COOL 17, 25

MED COOL 18, 26

HIGH COOL 19, 27

LOW COOL DEHUM 21, 29

MED COOL DEHUM 22, 30

HIGH COOL DEHUM 23, 31

LOW HEAT 33, 37, 41, 45

HIGH HEAT 35, 39, 43, 47

SERVICE TEST 49

SHUTDOWN 65

SAFETY FAULT 66

EMERGENCY 67

UFC LOW COOL 81

UFC MED COOL 82

LOW UFC DEHUM 85

MED UFC DEHUM 86

HIGH UFC DEHUM 87

UFC HIGH COOL 83

SUP.AIRTEMPE RING 129, 137

VENTSTAT

SYS_DMD

83

APPENDIX C: Navigatort Display

MODE -- RUN STATUS

RUN STATUS Run Status Men\u

VIEW View Menu

MODE Opera ting Mode see Appendix B MODETEXT

SUBM O p e r a t i n g S u b --- M o d e see Appendix B SUBMTEXT

S.DMD System Demand see Appendix B SYS_ DMDT

LINK Linkage Act ive Yes / No Forci ble LNK_ACT

OCC Currently Occupied Ye s/ N o For cible OCCUPIED

SAT Supply Air Temperature xxx..x °F SAT

COOL Cooling Status Menu

RDHL Requested Dehum Level 0=None,

MC.ON Mechanical Cool active? Yes / No MECHCOOL

MAX.C Max Allowed Cool Stages 0to3 Forcible MAXCSTGS

REQ.C Requested Cooling Stages 0to3 REQCSTGS

ACT.C Actual Cool Stage Active x ACTCSTGS

TG.A1 Compressor A1 Timeguard xxx se c TIMGD_A1

TG.AL Comp A1 Loader Timeguard xxx sec TIMG_ALD

FC.ON Free Cooling active Ye s/ N o FREECOOL

REQ.D Requested Damper Pos 0 to 100 % REQDAMP

HEAT Heating Status Menu

REQ.H Requested Heating Stages 0to2 REQHSTGS

ACT.H Actual Heat Stage Active x ACTHSTGS

MAX.H Max Allowed Heat Stages 0to2 Forcible MAXHSTGS

TG.H1 Heat Stage 1 Timeguard xxx sec TIMGD_H1

TG.H2 Heat Stage 2 Timeguard xxx sec TIMGD_H2

VENT Ventilation Status Menu

VENT Ventilation Status see Appendix B VENTTEXT

EC.MP MinPositioninEffect 0 to 100 % Forcible MIN_POS

OCC Currently Occupied Ye s/ N o For cible OCCUPIED

A.IO ASSIGNED INPUTS/OUPUTS

AI06 Assigned AI06 Function 0=None,

AI07 Assigned AI07 Function 0=None,

AI08 Assigned AI08 Function 0=None,

DI02 Assigned DI02 Function 0=None,

DI.Y3 Assigned MBB Y3 Function 0=None,

ITEM EXPANSION VALUES UNIT WRITE STATUS POINT

1=Subcool,
2=Reheat

1=IAQ,
2=OARH,
3=RARH,
4=OAQ,
5=SPRH,
6=OACFM

1=IAQ,
2=OARH,
3=RARH,
4=OAQ
,5=SPRH,
6=OACFM

1=IAQ,
2=OARH,
3=RARH,
4=OAQ,
5=SPRH,
6=OACFM

1=COFS,
2=REMOCC
3=REMOFF,
4=FILTER,
5=ENTHALPY,
6=GEN STAT,
7=HUMIDISTAT,
8=IAQOVRD,
9=FANSTATUS,
10=PHASEMON

1=COFS,
2=REMOCC,
3=REMOFF,
4=FILTER,
5=ENTHALPY,
6=GEN STAT,
7=HUMIDISTAT,
8=IAQOVRD,
9=FANSTATUS,
10=PHASEMON

REQDHLEV

MBBAI06F

MBBAI07F

MBBAI08F

MBBDI02F

MBBDI09F

84

APPENDIX C: Navigatort Display

MODE -- RUN STATUS (cont)

ITEM EXPANSION VALUES UNIT WRITE STATUS POINT

A.IO (cont) ASSIGNED INPUTS/OUPUTS

DI12 Assigned DI12 Function 0=None,

DI13 Assigned DI13 Function 0=None,

DI14 Assigned DI14 Function 0=None,

RY06 Assigned Rly 06 Function 0=None,

RY11 Assigned Rly 11 Function 0=None,

VERS Versions Menu

MODL Equipment Mode l number xxxxxxxxxxxxxxxxxx EQ_MOD

SERL Equipment Seria l number xxxxxxxxxx EQ_SER

SW Application SW Version text FW_CESR

BOOT Bootloader SW Version text BL_CESR

1=COFS,
2=REMOCC,
3=REMOFF,
4=FILTER,
5=ENTHALPY,
6=GEN STAT,
7=HUMIDISTAT,
8=IAQOVRD,
9=FANSTATUS,
10=PHASEMON

1=COFS,
2=REMOCC,
3=REMOFF,
4=FILTER,
5=ENTHALPY,
6=GEN STAT,
7=HUMIDISTAT,
8=IAQOVRD,
9=FANSTATUS,
10=PHASEMON

1=COFS,
2=REMOCC,
3=REMOFF,
4=FILTER,
5=ENTHALPY,
6=GEN STAT,
7=HUMIDISTAT,
8=IAQOVRD,
9=FANSTATUS,
10=PHASEMON

1=ALM Relay,
2=PE1,
3=PE2

1=ALM Relay,
2=PE1,
3=PE2

MBBDI12F

MBBDI13F

MBBDI14F

MBBRY06F

MBBRY11F

85

APPENDIX C: Navigatort Display

MODE -- SERVICE TEST

ITEM EXPANSION VALUES UNIT WRITE STATUS POINT

SERVICE TEST Service Test Menu

TEST ServiceTestModeEnable On/Off

INDP INDEPENDENT TEST MENU

DAMP Economizer Position Test 0 to 100 % S_DAMPER

BMP1 Compressor Bump A1 Test On/Off S_BMPA1

RDV.A Rht Dischg Valve Rly Tst On/Off S_RDV_A

RL.VA Reheat Liq Valv Rly Test On/Off S_ RLV_A

CL.VA Cooling Liq Valv Test On/Off S_CLV_A

CCH1 Crankcase Heater 1 test On/Off S_CCHR1

ALRM Alarm Output Relay Test On/Off S_ALARM

PE1 Pow er Exhaust 1 Test On/Off S_PE_1

PE2 Pow er Exhaust 2 Test On/Off S_PE_2

2P.EV 2Position/ERV Relay Test On/Off S_ERV2P

FAN FAN TESTS

IDFS Indoor Fan Speed Test 0 to 100 % S_IDFSPD

IF.SP Converted IDF Speed 0 to 5000 RPM IFRPMTST

IF.TR IDF Manual Transition Ye s/N o S_IDFTRN

COOL Cooling Test Menu

CL.A1 Cooling W/Comp.A1 Test On/Off S_COOLA1

CL.AL Cooling W/Comp.ALD Test On/Off S_COLALD

IDFS Indoor Fan Speed Test 0 to 100 % S_IDFSPD

OFR ODF Speed Relay Test On/Off S_ OFRSPD

HUM.T Humidimizer Level Test 0=Off,

HEAT Heating Test Menu

HT.1 Heating Stage 1 Test On/Off S_HEAT1

HT.2 Heating Stage 2 Test On/Off S_HEAT2

IDFS Indoor Fan Speed Test 0 to 100 % S_IDFSPD

1=Subcool,
2=Reheat

S_HMZLEV

86

APPENDIX C: Navigatort Display

MODE -- TEMPERATURES

ITEM EXPANSION VALUES UNITS

TEMPERATURES Temperature Menu

SAT Supply Air Temperature xxx..x °F SAT

OAT Outdoor Air Temperature xxx.x °F Forcible OAT

RAT Return Air Temperature xxx.x °F Forcible RAT

SPT Space Temperature xxx.x °F Forcib le SPACE_T

SPTO Space Temperature Offset xx.x ΔF Forcible SPTO

SST.A Cir.A Sat.Suction Temp xxx.x °F SST_A

SDT.A Cir.A Sat.Discharge Temp xxx.x °F SDT_A

FST Fan Supply Air Temp xxx.x °F FST

MODE -- PRESSURES

ITEM EXPANSION VALUES UNITS

PRESSURES Pressures Menu

SSP.A Cir. A Suction Pressure xxx.x PSI SSP_A

SDP.A Cir. A Discharge Pressure xxx.x PSI SDP_A

PR.A Circuit A Pressure Ratio xx.xx CIRA_PR

BARP Barometric Pressure xx.xx For cible BARP

MODE -- SETPOINTS

ITEM EXPANSION VALUES UNITS DEFAULT POINT

SETPOINTS Setpoint Menu

OCSP Occupied Cool Setpoint 55 to 80 °F 78 OCSP

OHSP Occupied Heat Setpoint 55 to 80 °F 68 OHSP

UCSP Unoccupied Cool Setpoint 65 to 95 °F 85 UCSP

UHSP Unoccupied Heat Setpoint 40 t o 80 °F 60 UHSP

GAP Heat --- Cool Setpoint Gap 2to10 °F 5 HCSP_GAP

STO.R SPT Offset Range (+/ --- ) 0to5 °F 5 SPTO_RNG

RH.OS Occupied SPRH Set point 0 to 100 % 50 SPRH_OSP

RH.US Unoccupied SPRH Setpoint 0 to 100 % 80 SPRH_USP

RH.DB Space RH Deadband 2to20 % 8 SPRH_DB

WRITE

STATUS

WRITE

STATUS

POINT

POINT

87

APPENDIX C: Navigatort Display

MODE -- INPUTS

ITEM EXPANSION VALUES UNITS

INPUTS Inputs Menu

STAT Thermostat Inputs menu

G Thermosta t G Input On/Off Forcibl e G

Y1 Thermostat Y1 Input On/Off Forcib le Y1

Y2 Thermostat Y2 Input On/Off Forcib le Y2

W1 Thermostat W1 Input On/Off For cible W1

W2 Thermostat W2 Input On/Off For cible W2

SW Switch Inputs Menu

IFO IGC Fan On Request (IFO) On/Off IGC_IFO

HPS.A Cir.A High Pressure Sw Open/Close CIRA_HPS

HUMD Humidistat Input On/Off Forcible HUMDSTAT

F. L S M IDF Manual Limit Switch Open/Close IDF_LSM

FDWN Fire Shutdown Switch Alarm/Normal Forcible FIREDOWN

COFS COFS Switch State High/Low Forcible COFS

PMR Phase Monitor Switch Alarm/Normal PMR_STAT

FIL.S Filter Status Switch Dirty/Clean Forcible FILTSTAT

RM.OC Remote Occupancy Switch On/Off Forcible REMOCC

R.OFF Remote Shutdown Switch On/Off Fo rcib le REMSHUT

FAN.S Fan Status Switch On/Off FAN_ STAT

GEN.S General Status Switch Alarm/Normal Forci ble GENSTAT

IAQ.O IAQ Override Switch On/Off Forcible IAQ_OVRS

ENTH Enthalpy Switch High/Low Fo rcib le ENTH_SW

AIS ANALOG Inputs Menu

EC.AP Damper Actual Position 0 to 100 % DAMPPOS

SPRH Space Relative Humidity 0 to 100 % Forci ble SPRH

OARH OA Relative Humidity 0 to 100 % Forcible OARH

RARH RA Relative Humidity 0 to 100 % Forcible RARH

IAQ Indoor Air Quality Level xxxx PPM Forci ble IAQ

OAQ OA Quality Level xxxx PPM Forcible OAQ

OCFM Outdoor Air in CFM 0 to 8000 CFM Forci ble OACFM

GEN General Inputs Menu

FT.RM Filter hour remaining xxxx hrs FILTLEFT

R.FLT Reset Filter Timer Yes / No RESETFLT

OAE Outdoor Air Enthalpy --- 9.6 to 334.2 Forcible OA_ENTH

RAE Return Air Enthalpy --- 9.6 to 334.2 For cible RA_ENTH

DF.AQ Differential Air Quality --- 5000 to 5000 PPM AQ_DIFF

WRITE

STATUS

POINT

88

APPENDIX C: Navigatort Display

MODE -- OUTPUTS

ITEM EXPANSION VALUES UNITS

OUTPUTS Outputs Menu

GEN General Outputs Menu

C.SPD IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

EC.CP Econo Commanded Position 0 to 100 % Forcible DAMPCMD

CCH CCH Relay 1 State On/Off CCHR1

PE.1 Power Exhaust 1 Relay On/Off Forcible PE1

PE.2 Power Exhaust 2 Relay On/Off Forcible PE2

ALRM Alarm Output Relay State On/Off Forcibl e ALMOUT

EV2P 2 --- Pos Damper/ERV relay On/Off ERV_2POS

COOL Cooling Outputs Menu

C.A1 Circuit A Compressor 1 On/Off COMP_A1

C.AL Circuit A CMP A1 Loader On/Off COMP_ALD

OFR Outdoor Fan Speed Relay On/Off OFR

RDV.A Reheat Dischg Valve CirA On/Off RDV_A

RLV.A Reheat Liquid Valve CirA On/Off RLV_A

CLV.A Cooling Liq Valve CirA On/Off CLV_A

HEAT Heat ing Outputs Menu

HT.1 Heat Stage 1 Relay On/Off HEAT_1

HT.2 Heat Stage 2 Relay On/Off HEAT_2

WRITE

STATUS

POINT

89

APPENDIX C: Navigatort Display

MODE -- CONFIGURATIONS

ITEM EXPANSION VALUES UNITS WRITE STATUS POINT

CONFIGURATION Configuration

GEN GENERAL

S.DLY Unit Startup Delay 10 to 600 sec 30 STARTDLY

U.CTL Unit Control Type 0=TSTAT,

T. C T L Thermostat Hardware Type 0=CONV 2C2H,

VNT.C Ventilation Method 0=NONE,

FT.TM Change Filter Timer 0 to 9999 hrs 600 FILTLIFE

T. T O Test Inactivity Time Out 0=Disabled,

CA.LO CircuitALockoutTemp --- 20 to 75 °F 40: no FIOP

N.HTR Number Of Heating Stages 0to2 2: all except below

HT.LO Heating Lockout Temp 40 to 125 °F 75 OATLHEAT

I.FAN INDOOR FAN

S.MAX IDF Maximum Fan Speed 0 t o 100 % 100 SPEEDMAX

S.VNT IDF Vent Speed--- RPM 0 to 3000 RPM sa me a s S.LCL RPM_VENT

S.HT IDF Heat Speed--- RPM 0 to 3000 RPM same as S.HCL RPM_HEAT

S.LCL IDF Low Cool Speed--- RPM 0 t o 3000 RPM 1106: Size 04 Standard Static Fan

S.HCL IDF High Cool Speed---RPM 0 to 3000 RPM 1474: Size 04 Standard Static Fan

S.FCL IDF Free Cool Speed---RPM 0 to 3000 RPM same as S.LCL RPM_FCL

1=SPACE SEN,
2=RAT SEN

1=DIGI 2C2H,
2=CONV 3C2H,
3=DIGI 3C2H

1=ECON,
2=2POS DMPR,
3=ERV,
4=ECON ERV

1=30 minutes,
2=1 hour,
3=2 hours,
4=4 hours,
5=8 hours,
6=12 hours

0=TSTAT CTRLTYPE

0 = CONV 2C2H ST ATTYPE

0: No FIOP
1: Economizer FIOP
2: Two Position Damper FIOP

4 TEST_ ITO

0: Humidi---MiZerFIOPorLowAmbient

FIOP

0: 50 Series without FIOP heaters
1: 48 Series single phase power,

Low Nox Gas Heat,
48FC 04--- 07 Low Heat,
48FC 05--- 07 Med Heat,
50GC 04-- -06 Low Heat,
50GC 04-- -05 Med Heat,
50GC 04 High Heat 230v 3ph and 460v,
50GC 05 High Heat 230v 3ph,
50GC 06 Med Heat 460v and 575v

1281: Size 04 Medium Static Fan
1457: Size 04 High Static Fan
1112: Size 05 Standard Static Fan
1269: Size 05 Medium Static Fan
1439: Size 05 High Static Fan 230v 1 ph
1556: Size 05 High Static Fan 230v 3ph,

460v, 575v
1258: Size 06 Standard Static Fan
1398: Size 06 Medium Static Fan
1556: Size 06 High Static Fan 230v 1 ph
1659: Size 06 High Static Fan 230v 3ph,

460v, 575v
1184: Size 07 Standard Static Fan
1302: Size 07 Medium Static Fan
1460: Size 07 High Static Fan

1708: Size 04 Medium Static Fan
1942: Size 04 High Static Fan
1482: Size 05 Standard Static Fan
1693: Size 05 Medium Static Fan
1919: Size 05 High Static Fan 230v 1 ph
2075: Size 05 High Static Fan 230v 3ph,

460v, 575v
1677: Size 06 Standard Static Fan
1864: Size 06 Medium Static Fan
2075: Size 06 High Static Fan 230v 1 ph
2212: Size 06 High Static Fan 230v 3ph,

460v, 575v
1794: Size 07 Standard Static Fan
1973: Size 07 Medium Static Fan
2212: Size 07 High Static Fan

VENTTYPE

OATLCMPA

NUMHSTGS

RPM_LCL

RPM_HCL

90

APPENDIX C: Navigatort Display

MODE -- CONFIGURATIONS (cont)

ITEM EXPANSION VALUES UNITS WRITE STATUS POINT

ECON ECONOMIZER

VNT.C Ventilation Method 0=NONE,

FC.MX Free Cooling Max OAT 0to90 °F 65 MAXFREET

EC.MX Econ Max Damper Position 0 to 100 % 100 DAMPMAX

MIN.P MINIMUM POSITION CONFIGS

MP.MX Econ Min at Max Fanspeed 0 to 100 % 30 MINP_MAX

MP.S1 Min Pos --- User Speed 1 0 to 100 % 0 MP_USPD1

MP.D1 M i n P o s --- U s e r P o s 1 0 to 100 % 0 MP_UPOS1

MP.S2 Min Pos --- User Speed 2 0 to 100 % 0 MP_USPD2

MP.D2 M i n P o s --- U s e r P o s 2 0 to 100 % 0 MP_UPOS2

MP.S3 Min Pos --- User Speed 3 0 to 100 % 0 MP_USPD3

MP.D3 M i n P o s --- U s e r P o s 3 0 to 100 % 0 MP_UPOS3

NET NETWORK SETTINGS

BAS BAS Protocol Select 0=NONE,

NW.TO Network Input Timeout 0 to 600 min 30 NETINTO

CCN CCN

CCN.B CCN Bus number 0 to 239 0 CCNBUS

CCN.A CCN Element Number 1 to 239 1 CCNADD

BAUD CCN Baud Rate 0=9600,

BNET BACNET

MAC BACnet Device Macaddress 1 t o 127 1 BAC_MAC

BAUD BACnet BMS baud rate 0=9600,

AUID ALC Auto Id Scheme Ye s/N o Yes AUID

B.AID BACnet ID Auto ID Ye s/ N o Yes BAC_AUID

ID BACnet ID Number 0 to 4194302 1610101 BAC_ID

DISP DISPLAY SETTINGS

METR Metric Display Ye s / No No DISPUNIT

LANG Display Language Select 0=English,

PROT User Password Pro tection Enable/Disable Ena ble PA S S_ E BL

PSWD User Password 0 to 9999 1111 PA S SW O RD

1=ECON,
2=2POS DMPR,
3=ERV,
4=ECON ERV

1=CCN,
2=BACNET

1=19200,
2=38400

1=19200,
2=38400,
3=57600,
4=76800,
5=115200

1=Spanish,
2=French,
3=Portuguese

0: No FIOP
1: Economizer FIOP
2: Two Position Damper FIOP

2=BACNET BMS_CFG

2 = 38400 BAUDENUM

4 = 76800 BAC_BAUD

0=English LANGUAGE

VENTTYPE

91

APPENDIX C: Navigatort Display

MODE -- TIME CLOCK

ITEM EXPANSION RANGE UNIT DEFAULT POINT

TIME CLOCK

TIME Clock Hour and Minute xx:xx hh.mm

MNTH Month of Year 1=JANUARY,

DOM Day Of month 1to31 DOM

YEAR Year 2000 t o 9999 YOC_DISP

DAY Day Of week 1=MONDAY,

DST.A DST currently active Yes/N o DST_ACTV

DST Daylight Savings Config

DST DST allowed? Enable/Disable Enable DST_CFG

STR.M DST Start Month 1=JANUARY,

STR.W DST Start Week 1to5 2 STARTW

STR.D DST Start Day 1=MONDAY,

M.ADD DST Minute s to Add 0to90 min 60 MINADD

STP.M DST Stop Month 1=JANUARY,

STP.W DST Stop Week 1to5 1 STOPW

STP.D DST Stop Day 1=MONDAY,

M.SUB DST Minutes to Subtract 0to90 min 60 MINSUB

TOD Time in day t o start DST 0 to 600 min 120 DST_TOD

SCHD Schedules Adjust Menu

SCH.N CCN Schedule Number 0 = Always Occupied,

OV.TL Timed Override Duration 0to4 hours 4 OTL_CFG

MON Mon Schedule Adjust Menu

OC.x Monday Occupied x 00:00 to 24:00 or None HH:MM None M O _ O C 1 ---

UOC.x Monday Unoccupied x 00:00 to 24:00 or None HH:MM None M O _ U N O C 1 ---

2=FEBRUARY,
3=MARCH,
4=APRIL,
5=MAY,
6=JUNE,
7=JULY,
8=AUGUST,
9=SEPTEMBER,
10=OCTOBER,
11=NOVEMBER,
12=DECEMBER

2=TUESDAY,
3=WEDNESDAY,
4=THURSDAY,
5=FRIDAY,
6=SATURDAY,
7=SUNDAY

2=FEBRUARY,
3=MARCH,
4=APRIL,
5=MAY,
6=JUNE,
7=JULY,
8=AUGUST,
9=SEPTEMBER,
10=OCTOBER,
11=NOVEMBER,
12=DECEMBER

2=TUESDAY,
3=WEDNESDAY,
4=THURSDAY,
5=FRIDAY,
6=SATURDAY,
7=SUNDAY

2=FEBRUARY,
3=MARCH,
4=APRIL,
5=MAY,
6=JUNE,
7=JULY,
8=AUGUST,
9=SEPTEMBER,
10=OCTOBER,
11=NOVEMBER,
12=DECEMBER

2=TUESDAY,
3=WEDNESDAY,
4=THURSDAY,
5=FRIDAY,
6=SATURDAY,
7=SUNDAY

1 --- 6 4 = L o c a l S c h e d u le ,
65---99 = Global
Schedule

3 STARTM

7 STARTD

11 STOPM

7 STOPD

n/a 0 SCH EDNUM

MOY

dow

MO_OC8

MO_UNOC8

92

APPENDIX C: Navigatort Display

MODE -- TIME CLOCK (cont)

ITEM EXPANSION RANGE UNIT DEFAULT POINT

SCHD (cont) Schedules Adjust Menu

TUE TueScheduleAdjustMenu

OC.x Tuesday Occupied x 00:00 to 24:00 or None HH:MM None TU_OC1 --- TU_OC8

UOC.x Tuesday Unoccupied x 00:00 to 24:00 or None HH:MM None TU_UNOC1 --- TU_UNOC8

WED Wed Schedule Adjust Menu

OC.x Wednesday Occupied x 00:00 to 24:00 or None HH:MM None WE_OC1 --- WE_OC8

UOC.x Wednesday Unoccupied x 00:00 to 24:00 or None HH:MM None WE_UNOC1 --- WE_UNOC8

THU Thu Schedule Adjust Menu

OC.x Thursday Occupied x 00:00 to 24:00 or None HH:MM None TH_OC1 --- TH_OC8

UOC.x Thursday Unoccupied x 00:00 to 24:00 or None HH:MM None TH_UNOC1 --- TH_UNOC8

FRI F ri Schedule Adjust Menu

OC.x Friday Occupied x 00:00 to 24:00 or None HH:MM None FR_OC1 --- FR_OC8

UOC.x Friday Unoccupied x 00:00 to 24:00 or None HH:MM None FR_UNOC1 --- FR_UNOC8

SAT Sa t Schedule Adjust Menu

OC.x Saturday Occupied x 00:00 to 24:00 or None HH:MM None SA_OC1 - -- SA_OC8

UOC.x Saturday Unoccupied x 00:00 to 24:00 or None HH:MM None SA_UNOC1 - -- SA_UNOC8

SUN Sun Schedule Adjust Menu

OC.x Sunday Occupied x 00:00 to 24:00 or None HH:MM None SU_OC1 --- SU_OC8

UOC.x Sunday Unoccupied x 00:00 to 24:00 or None HH:MM None SU_ UNOC1 --- SU_ UNOC8

HOL H ol Schedule Adjust Menu

OC.x Holiday Occupied x 00:00 to 24:00 or None HH:MM None HD_OC1 --- HD_OC8

UOC.x Holiday Unoccupied x 00:00 to 24:00 or None HH:MM None HD_UNOC1 --- HD_UNOC8

(repeat up to x=8 Periods)

HLDY Holiday adjustment Menu

HOL.G Accept Global Holidays? Yes /N o No HOLIDAYT

HL.TY Today Is A Holiday Yes/ No HOLTODAY

HL.TW Tomorrow Is A Holiday Yes /No HOL_TMRW

HO.xx Holiday adjustment Menu

LEN Holiday Duration (days) 0to99 0 HD01LEN --- HD30LEN

DAY Holiday Start Day 0to31 0 HD01STDY --- HD30STDY

MON Holiday Start Month 0to12=JanuarytoDecember 0 HD01STMN --- HD30STMN

(repeat up t o xx=30 Holidays)

93

APPENDIX C: Navigatort Display

MODE -- OPERATING MODES

ITEM EXPANSION VALUES UNITS WRITE STATUS POINT

OPERATING MODES Operating Modes Menu

MODE Operating Mode see Appendix B MODETEXT

SUBM O p e r a t i n g S u b --- M o d e see Appendix B SUBMTEXT

S.DMD System Demand see Appendix B SYS_ DMDT

LINK Linkage Active Yes / No Forcible LNK_ACT

CLTG Cool Mode Select T.guard xxx sec COOLMSTG

HTTG Heat Mode Select T.guard xxx sec H EATMSTG

MODE -- ALARMS

ITEM EXPANSION RANGE

ALARMS

CURR Curr Active Alarm Menu

alarm# text string ALARM01C --- ALARM25C

(repeat up t o 25 times)

HIST History Menu

alarm# a la r m # --- m m / d d /y y --- h h. m m --- t e x t s t r i ng ALHIS001 --- ALHIS050

(repeat up t o 50 times)

R.CUR Reset All Current Alarms Ye s /N o Yes ALRESET

R.HIS Alarm Reset History Menu

ARxx mm/dd/yy, hh:mm:ss ALMRES00 --- ALMRES19

(repeat up t o 20 times)

WRITE

STATUS

POINT

94

APPENDIX D: SystemVut Controller CCN Tables

Status Display Tables

TABL E DISPLAY NAME VAL UES UNITS POINT NAME WRITE STATUS

UINPUT

Supply Air Temperature xxx..x °F SAT

Outdoor Air Temperature xxx.x °F OAT Forci ble

Return Air Temperature xxx.x °F RAT Forcible

Space Temperature xxx.x °F SPACE_T Forcible

Space Temperature Offset xx.x ΔF SPTO Forcible

Fan Supply Air Temp xxx.x °F FST

Cir.A Sat .Suction Temp xxx.x °F SST_A

Cir.A Sat.Discharge Temp xxx.x °F SDT_A

Cir.A Suction Pressure xxx.x PSI SSP_A

Cir.A Discharge Pressure xxx.x PSI SDP_A

Thermosta t G Input On/Off G Forcible

Thermosta t Y1 Input On/Off Y1 Forcible

Thermosta t Y2 Input On/Off Y2 Forcible

Thermostat W1 Input On/Off W1 Forcible

Thermostat W2 Input On/Off W2 Forcible

Humidistat Input On/Off HUMDSTAT Forcible

IDF Manual Limit Switch Open/Close IDF_LSM

IGC Fan On Request (IFO) On/Off IGC_IFO

Cir.A High Pressure Sw Open/Close CIRA_HPS

Fire Shutdown Switch Alarm/Normal FIREDOWN Forcible

COFS Switch State High/Low COFS Forci ble

Filter Status Switch Dirty/Clean FILTSTAT Forcible

Phase Monitor Switch Alarm/Normal PMR_STAT

Fan Status Switch On/Off FAN_STAT

Remote Occupancy Switch On/Off REMOCC Forcible

Remote Shutdow n Switch On/Off REMSHUT Forcible

General Status Switch Alarm/Normal GENSTAT Fo rcible

IAQ Override Switch On/Off IAQ_OVRS Forcible

Enthalpy Switch High/Low ENTH_SW Forcibl e

UOUTPUT

Damper Actual Position 0 to 100 % DAMPPOS

Space Relative Humidity 0 to 100 % SPRH Forcible

OA Relative Humidity 0 t o 100 % OARH Forcible

RA Relative Humidity 0 to 100 % RARH Forcible

Indoor Air Quality Level xxxx PPM IAQ Forcible

OA Quality Level xxxx PPM OAQ For cible

Outdoor Air in CFM 0 to 8000 CFM OACFM Fo rcible

IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

Econo Commanded Position 0 to 100 % DAMPCMD Forcible

CCH Relay 1 State On/Off CCHR1

Power Exhaust 1 Relay On/Off PE1 Forcible

Power Exhaust 2 Relay On/Off PE2 Forcible

Alarm Output Relay State On/Off ALMOUT Forcible

2--- Pos Damper/ERV relay On/Off ERV_2POS

Circuit A Compressor 1 On/Off COMP_A1

Circuit A CMP A1 Loader On/Off COMP_ALD

Outdoor Fan Speed Relay On/Off OFR

Heat Stage 1 Relay On/Off HEAT_1

Heat Stage 2 Relay On/Off HEAT_2

Reheat Dischg Valve CirA On/Off RDV_A

Reheat Liquid Valve CirA On/Off RLV_A

Cooling Liq Valve CirA On/Off CLV _A

95

APPENDIX D: SystemVut Controller CCN Tables

Status Display Tables (cont)

TABL E DISPLAY NAME VAL UES UNITS POINT NAME WRITE STATUS

GENDISP

Circuit A Pressure Ratio xx.xx CIRA_PR

Barometric Pressure xx.xx ”Hg BARP For cible

Filter hour rema ining xxxx hrs FILTLEFT

Reset Filter Timer Ye s/ N o RESETFLT Writable

Outdoor Air Entha lpy --- 9.6 to 334.2 BTU_LB OA_ENTH Forcible

Return Air Enthalpy ---9.6 to 334.2 BTU_LB RA_ENTH Forcible

Differential Air Quality ---5000 to 5000 PPM AQ_DIFF

DST currently active Ye s /N o DST_ACTV

Network OAT Value xxx.x °F OAT_NET Forcible

Network Return Air Temp xxx.x °F RAT_NET Fo rcible

Network Space Temp Value xxx.x °F SPT_ NET Forcible

Network SPRH Value 0 to 100 % SPRH_NET Forcible

Network OARH Value 0 to 100 % OARH_NET Forcibl e

Network RARH Value 0 to 100 % RARH_NET Forcible

Network IAQ Value xxxx PPM IAQ_NET Forcible

Network OAQ Value xxxx PPM OAQ_NET Forcible

Network OACF M Value xxx.x CFM OCFM_NET Forci ble

MODEDISP

System Mo de see Appendix B SYSMODE

Running Mode Operation see Appendix B SUB_ MODE

Ventilation Status see Appendix B VENTSTAT

System Demand 0to99 SYS_DMD

Currently Occupied Yes/ No OCCUPIED Forcible

Linkage Active Ye s /No LNK_ACT

Unocc Free Cool Active Ye s /N o UFC_ACT

Temp Compensate Start On Ye s /N o TCS_ ACT

COOLDISP

Cool Setpoint in Effect xx.x °F CSP_EFF

Heat Setpoint in Effect xx.x °F HSP_EFF

Effective Demand Temp xxx.x °F TEMP_EFF

Cool Demand Limiting Yes / No CDMLMOFF

Cool Demand limit offset 0 °F COOLDLMO

Heat Demand Limiting 0 HDMLMOFF

Heat Demand Limit offset 0 °F HEATDLMO

Cool demand Limit Level 0to3 CDMDLLEV

Heat demand Limit Level 0to3 HDMDLLEV

OKtoUseFreeCooling? Yes/N o OKFREECL

Free Cooling active Yes/ No FREECOOL

Free Cooling SAT Setpnt xx.x °F FC_SATSP

Econo Commanded Position 0 to 100 % DAMPCMD Forcible

IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

Ok to use compre ssors? Ye s/N o OKMECHCL

Mechanical Cool active? Yes/N o MECHCOOL

Max Allowed Cool Stages 0to3 MAXCSTGS Forcible

Requested Cooling Stages 0to3 REQCSTGS

Actual Cool Stage Active x ACTCSTGS

Circuit A Compressor 1 On/Off COMP_A1

Circuit A CMP A1 Loader On/Off COMP_ALD

Compressor A1 Timeguard xxx sec TIMGD_A1

Comp A1 Loader Timeguard xxx sec TIMG_ALD

Ok to use Humidimizer Yes /N o OKTOHUMZ

Requested Dehum Level 0=None

Req Compr DehumStgs 0to3 REQDSTGS

Ok to use Fan Dehum Yes/ No OKTOFBD

1=Subcool,
2=Reheat

REQDHLEV

Cir.A Sat.Discharge Temp xxx.x °F SDT_A

Cir.A Sat .Suction Temp xxx.x °F SST_A

Cir.A Discharge Pressure xxx.x PSI SDP_A

Cir.A Suction Pressure xxx.x PSI SSP_A

Circuit A Pressure Ratio xx.xx CIRA_PR

Cir.A High Pressure Sw Open/Close CIRA_HPS

96

APPENDIX D: SystemVut Controller CCN Tables

Status Display Tables (cont)

TABL E DISPLAY NAME VAL UES UNITS POINT NAME WRITE STATUS

COOLDISP (cont)

Supply Air Temperature xxx..x °F SAT

Outdoor Air Temperature xxx.x °F OAT Forci ble

HEATDISP

VENTDISP

ALRMDISP

STRTHOUR

ODF State 0=OFF,

Outdoor Fan Speed Relay On/Off OFR

OK to Run Heat Yes/ No OKTOHEAT

OK to SupplyAirTempering Ye s/N o OKTOTEMP

IGC Fan On Request (IFO) On/Off IGC_IFO

IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

Max Allowed Heat Stages 0to2 MAXHSTGS Forcible

Requested Heating Stages 0to2 REQHSTGS

Actual Heat Stage Active x ACTHSTGS

Heat Stage 1 Relay On/Off HEAT_1

Heat Stage 2 Relay On/Off HEAT_2

Heat Stage 1 Timeguard xxx sec TIMGD_H1

Heat Stage 2 Timeguard xxx sec TIMGD_H2

Ventilation Status see Appendix B VENTSTAT

Ventilation Status see Appendix B VENT TEXT

MinPositioninEffect 0 to 100 % MIN_ POS Forcible

In Pre - -- Occupancy Purge? Ye s /N o PREOCCON

Differential Air Quality ---5000 to 5000 PPM AQ_DIFF

IDF Commanded RPM 0 to 3000 RPM FSPD_RPM

Econo Commanded Position 0 to 100 % DAMPCMD Forcible

Damper Actual Position 0 to 100 % DAMPPOS

Free Cooling active Yes/ No FREECOOL

Currently Occupied Yes/ No OCCUPIED Forcible

Mins until next occupied --- 1 to 10080 min MINTILOC

Ok to Preoccupancy Purge Ye s/N o OKPREOCC

Power Exhaust 1 Relay On/Off PE1 Forcible

Power Exhaust 2 Relay On/Off PE2 Forcible

2--- Pos Damper/ERV relay On/Off ERV_2POS

Active Alarm 1 Code xxx ALMCODE1

Active Alarm 2 Code xxx ALMCODE2

Active Alarm 3 Code xxx ALMCODE3

Active Alarm 4 Code xxx ALMCODE4

Active Alarm 5 Code xxx ALMCODE5

Reset All Current Alarms Ye s/ N o ALRESET Writable

Compressor A1 Run Ho urs xxxxxx.x hrs HR_A1

CMP A1 Loader Run Hours xxxxxx.x hrs HR_ALDR

Alarm Relay Run Hours xxxxxx.x hrs HR_ALM

CCH1 Relay Run Hours xxxxxx.x hrs HR_CCHR1

Econ Damper Run Hours xxxxxx.x hrs HR_DAMP

2Position/ERV Run Hours xxxxxx.x hrs HR_ERV2P

Unit Full Load Run Hours xxxxxx.x hrs HR_FLOAD

Free Cooling Run Hours xxxxxx.x hrs H R_FREEC

Heat Stage 1 Run Hours xxxxxx.x hrs HR_HTR_1

Heat Stage 2 Run Hours xxxxxx.x hrs HR_HTR_2

Indoor Fan Run Hours xxxxxx.x hrs HR_IDF

Max Fan Speed Run Hours xxxxxx.x hrs HR_MAXF

ODF Relay Run Hours xxxxxx.x hrs HR_OFR

RDV_A Run Hours xxxxxx.x hrs HR_RDV_A

RLV_A Run Hours xxxxxx.x hrs HR_RLV_A

CLV_A Run Hours xxxxxx.x hrs HR_CLV_A

Reheat level 1 Run Hrs xxxxxx.x hrs HR_RQHL1

Reheat level 2 Run Hrs xxxxxx.x hrs HR_RQHL2

Power Exhaust1 Run H ours xxxxxx.x hrs HR_PE_1

Power Exhaust2 Run H ours xxxxxx.x hrs HR_PE_2

Service T est Run Hours xxxxxx.x hrs HR_STEST

Vent IDF Run H ours xxxxxx.x hrs HR_VENTF

1=ON,
2=LOW,
3=HIGH

ODFSTATE

97

APPENDIX D: SystemVut Controller CCN Tables

Status Display Tables (cont)

TABL E DISPLAY NAME VAL UES UNITS POINT NAME WRITE STATUS

STRTCNTS

Compressor A1 Starts xxxxxx ST_A1

CMP A1 Loader Starts xxxxxx ST_ALDR

Alarm Relay Starts xxxxxx ST_ALM

Alarm Reset Counts xxxxxx ST_ALRST

CCH1 Relay Starts xxxxxx ST_CCHR1

Economizer Damper Starts xxxxxx ST_DAMP

2Position/ERV Starts xxxxxx ST_ERV2P

Unit Full Load Starts xxxxxx ST_FLOAD

Free Cooling Starts xxxxxx ST_FREEC

Heat Stage 1 Starts xxxxxx ST_HTR_1

Heat Stage 2 Starts xxxxxx ST_HTR_2

Indoor Fan Starts xxxxxx ST_ IDF

Max IDF Speed St arts xxxxxx ST_MAXF

ODF Relay Starts xxxxxx ST_OFR

Powe r Exhaust 1 St arts xxxxxx ST_PE_1

Powe r Exhaust 2 St arts xxxxxx ST_PE_2

Power Cycle Counts xxxxxx ST_POR

RDV_A Starts xxxxxx ST_RDV_A

RLV_A Starts xxxxxx ST_RLV_A

CLV_A Starts xxxxxx ST_CLV_A

Reheat level 1 Starts xxxxxx ST_RQHL1

Reheat level 2 Starts xxxxxx ST_RQHL2

Service Test Starts xxxxxx ST_STEST

Ventilation Fan Starts xxxxxx ST_VENTF

STRTRSTS

Comp A1 Resets Count xxxxxx RS_A1

A1 Loader Reset s Count xxxxxx RS_ALDR

Alarm Relay Resets Count xxxxxx RS_ALM

Alarm Reset Resets Count xxxxxx RS_ALRST

CCH1 Relay Resets Count xxxxxx RS_CCHR1

Econ Damper Resets Count xxxxxx RS_DAMP

2Position/ERV ResetCount xxxxxx RS_ERV2P

Full Load Re sets Count xxxxxx RS_FLOAD

Free Cooling Reset Count xxxxxx RS_FREEC

Heat Stage 1 Reset Count xxxxxx RS_HTR_1

Heat Stage 2 Reset Count xxxxxx RS_HTR_2

Indoor Fan Reset Count xxxxxx RS_IDF

Max IDF Spd Resets Count xxxxxx RS_MAXF

ODF Rela y Resets Counts xxxxxx RS_OFR

P.Exhaust 1 Reset s Count xxxxxx RS_PE_1

P.Exhaust 2 Reset s Count xxxxxx RS_PE_2

Power Cycle Resets Count xxxxxx RS_POR

RDV_A Reset Count xxxxxx RS_RDV_A

RLV_A Reset Count xxxxxx RS_RLV_A

CLV_A Reset Count xxxxxx RS_CLV_A

Reheat lev 1 Rst Count xxxxxx RS_RQHL1

Reheat lev 2 Rst Count xxxxxx RS_RQHL2

Service Test Reset Count xxxxxx RS_STEST

Vent IDF Resets Count xxxxxx RS_VENTF

98

APPENDIX D: SystemVut Controller CCN Tables

Maintenance Tables

TABL E DISPLAY NAME VALUES UNITS POINT NAME WRITE STATUS

MODES

Operating Mode see Appendix B MODETEXT

System Mo de see Appendix B SYSMODE

O p e r a t i n g S u b --- M o d e see Appendix B SUBMTEXT

Running Mode Operation see Appendix B SUB_MODE

Ventilation Status see Appendix B VENTTEXT

Ventilation Status see Appendix B VENTSTAT

System Demand see Appendix B SYS_DMDT

System Demand 0to99 SYS_DMD

Currently Occupied Ye s/ N o OCCUPIED Forcible

Linkage Active Yes/ N o LNK_ACT

Unocc Free Cool Active Ye s/ N o UFC_ACT

Temp Compensate Start On Ye s/ N o TCS_ACT

Current Mode Ended Ye s/ N o MODEDONE

Cool Mode Select T.guard xxx sec COOLMSTG

Heat Mode Select T.guard xxx sec H EATMSTG

Cool Setpoint in Effect xx.x °F CSP_EFF

Heat Setpoint in Effect xx.x °F HSP_EFF

Effective Demand Temp xxx.x °F TEMP_EFF

Space Cooling Demand xx.x ΔF COOL_DMD

Cooling Demand Trend xx.x CLDTREND

Heating Space Demand xx.x ΔF HEAT_DMD

Heat Space Demand Trend xx.x HTDTREND

TESTMODE

Economizer Position Test 0 to 100 % S_DAMPER Writable

Compressor Bump A1 T est On/Off S_BMPA1 Writable

Rht Dischg Valve Rly Tst On/Off S_RDV_A Writable

Reheat Liq Valv Rly Test On/Off S_ RLV_A Writa ble

Cooling Liq Valv Test On/Off S_CLV_A Writable

Crankcase Heater 1 test On/Off S_CCHR1 Writa ble

Alarm Output Relay Test On/Off S_ALARM Writable

Powe r Exhaust 1 Test On/Off S_PE_1 Writable

Powe r Exhaust 2 Test On/Off S_PE_2 Writable

2Position/ERV Relay Test On/Off S_ERV2P Writ able

IDF_DIAG

Indoor Fan Speed Test 0 to 100 % S_IDFSPD Writable

IDF Manual Transition Ye s/ N o S_IDFTRN Writable

Cooling W/Comp.A1 Test On/Off S_COOLA1 Writable

Cooling W/Comp.ALD Test On/Off S_COLALD Writable

ODF Speed Relay Test On/Off S_OFRSPD Writable

Humidimizer Level Test 0=Off,

Heating Stage 1 Test On/Off S_HEAT1 Writable

Heating Stage 2 Test On/Off S_HEAT2 Writable

AUTO INDEPENDENT TEST Ye s/ N o AUTOINDP Writable

RUN AUTO COOLING TEST Yes/ No AUTOCOOL Writable

RUN AUTO HEATING TEST Ye s/ N o AUTOHEAT Writable

RUN AUTO SYSTEM TEST Ye s/N o AUTOSYS Writable

IDF Commanded RPM 0 t o 3000 RPM FSPD_RPM

Commanded IDF Speed 0 to 100 % FANSPEED

Requested IDF Speed 0 to 100 % RQFANSPD

IDF Vent Speed--- RPM 0 to 3000 RPM RPM_VENT

IDF Heat Speed--- RPM 0 to 3000 RPM RPM_HEAT

IDF Free Cool Speed --- RPM 0 to 3000 RPM RPM_FCL

IDF Low Cool Speed --- RPM 0 to 3000 RPM RPM_LCL

IDF High Cool Speed--- RPM 0 to 3000 RPM RPM_HCL

IDF Maximum Fan Speed 0 to 100 % SPEEDMAX

1=Subcool,
2=Reheat

S_HMZLEV Writable

99

APPENDIX D: SystemVut Controller CCN Tables

Maintenance Tables (cont)

TABL E DISPLAY NAME VALUES UNITS POINT NAME WRITE STATUS

IDF_DIAG (cont)

USB_DIAG

Fan Status Switch On/Off FAN_STAT

IDF Manual Limit Switch Open/Close IDF_LSM

IDF Speed Override Flag On/Off FAN_OVRD

IDF Speed Reduction On Yes/N o FANRED1 0

IDF Operation Errors? Yes/ No IDFBAD

USB TREND STAT US 0=IDLE,

USB TREND DURATION 0=FULL,

USB TREND RATE 1 to 300 sec TRNDRATE Writable

USB TREND POINTS FROM 0=FILE,

TREND FILE SEARCH text TRNDFILE

TREND EQUIP PERFORMANCE On/Off TRNDEQPR Writable

TREND COOL PERFORMANCE On/Off TRNDCLPR Writable

TREND HEAT PERFORMANCE On/Off TRNDHTPR Writable

Trend Cooling Diagnostic On/Off TRNDCLDG Writable

TREND IDF DIAGNOSTIC On/Off TRNDIDF Writable

TREND VENTILATION On/Off TRNDVENT Writable

TREND GEN INPUTS/OUTPUTS On/Off TRNDIO Writable

Start USB Trending Yes/ No TREND_EN Writable

1=TRENDING,
2=NO POINTS,
3=USB FULL

1=ROLLING,
2=LASTWEEK,
3=1 MINUTE,
4=5 MINUTES,
5=15 MINUTES,
6=30 MINUTES,
7=1 HOUR,
8=3 HOURS,
9=8 HOURS,
10=12 HOURS,
11=1 DAY,
12=1.5 DAYS,
13=2 DAYS,
14=3 DAYS,
15=5 DAYS,
16=1 WEEK,
17=2 WEEKS,
18=4 WEEKS

1=LIST

TRNDSTAT

TRNDDUR Writable

TRNDPNTS Writable

COOLDIAG

Make Config Backup File Start /Stop DDBCKUP Writable

Backup file is ready 0=IDLE,

USB Find Restore File Yes /N o BACKFILE Writable

Start Config Restore Sta rt/Stop DDRSTRE Writable

File Error Ye s/ N o FILE_ERR

System Demand see Appendix B SYS_DMDT

O p e r a t i n g S u b --- M o d e see Appendix B SUBMTEXT

IDF Commanded RPM 0 t o 3000 RPM FSPD_RPM

OKtoUseFreeCooling? Ye s /No OKFREECL

Econ Damper Operational Yes/ No DAMPGOOD

Dry Bulb Lockout Yes/ No DBLOCK For cible

Enthalpy Lockout Ye s/ N o ENTHLOCK Forcible

Free Cooling active Yes / No FREECOOL

Unocc Free Cool Active Ye s/ N o UFC_ACT

Free Cooling SAT Setpnt xx.x °F FC_SATSP

Requested Damper Pos 0 to 100 % REQDAMP

Econo Commanded Position 0 to 100 % DAMPCMD For cible

Ok to use compre ssors? Ye s/ N o OKMECHCL

Compressor A1 strikes x A1STRIKE

Circuit A Locked Out Ye s/N o CIRALOCK

Mechanical Cool active? Ye s/ N o MECHCOOL

Max Allowed Cool Stages 0to3 MAXCSTGS Forcible

Supply Air Temp Trend xxx.x SA TTREND

Supply Air Temperature xxx..x °F SAT

Requested Cooling Stages 0to3 REQCSTGS

1=SUCCESS,
2=FAILURE

BACKUP_R

100