Carrier 48/50HC04-28, 48/50TC04-30, 50TCQ04-24, 50HCQ04-12, 48/50LC04-26 Controls, Start-up, Operation And Troubleshooting

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48/50TC04 ---30, 50TCQ04---24 48/50HC04---28, 50HCQ04---12 48/50LC04---26 Factory Installed Option RTU Open Multi --- Protocol Controller

Controls, Start---Up, Operation

and Troubleshooting

TABLE OF CONTENTS

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

GENERAL 2.........................................

SENSOR/ACCESSORY INSTALLATION 2................

Sensors and Accessories 4.............................

User Interfaces 4.....................................

Install Analog Sensors 4...............................

Supply Air Sensor (SAT) 4...........................

Outdoor Air Sensor (OAT) 4..........................

Space Temperature Sensor (SPT) 4.....................

Sensor Averaging 9...............................

Sensor(s) (IAQ and OAQ) 9......................

Relative Humidity Sensors (Space or Duct Mounted) 11.....

Installing Discrete Inputs 11............................

Compressor Safety 11...............................

Humidistat 11.....................................

Single Enthalpy (Outdoor Enthalpy) 11.................

Differential Enthalpy 11.............................

Fire Shutdown 12..................................

Filter Status 12.....................................

Fan Status 12......................................

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

IGC Override 12...................................

Communication Wiring--Protocols 13.....................

General 13........................................

Building Automation System 13.................

i--Vu

BACnet

Modbus 14.......................................

Johnson N2 14.....................................

LonWorks 14......................................

Local Access 15....................................

START--UP 16........................................

Additional Installation/Inspection 16.....................

Power Exhaust Relay Power 16........................

Service Test 16......................................

Fan Test 16.......................................

High Speed Fan Test 16..............................

Compressor 1 and Compressor 2 Test 16.................

Heat 1 and Heat 2 Test 16............................

MS/TP 13................................

Dehumidification Test 16.............................

Power Exhaust Test 17..............................

Economizer Test 17.................................

VFD Speed Test 17.................................

Configuration 17....................................

Setpoint 17.......................................

Unit 17..........................................

Inputs 18.........................................

Service Configuration 19.............................

OPERATION 20......................................

Occupancy 20.......................................

Indoor (Supply) Fan 21...............................

Cooling 21.........................................

Supply Fan 22......................................

Economizer 22......................................

Enthalpy Control 22..................................

Space Air Quality 23.................................

Power Exhaust 23....................................

Pre--Occupancy Purge 23..............................

Heating 23.........................................

Indoor Air Quality 23.................................

Dehumidification 24..................................

Demand Limit 24....................................

Unoccupied Free Cooling 24...........................

Optimal Start 24.....................................

Fire Shutdown 24....................................

Compressor Safety 24.................................

Fan Status 25.......................................

Filter Status 25......................................

Door Switch 25......................................

Remote Occupancy 25................................

Linkage 25.........................................

TROUBLESHOOTING 25..............................

General 25.........................................

Replacing the RTU Open’s Battery 25...................

Thermistor Troubleshooting 26.........................

Software Version 26..................................

Communication LED’s 26.............................

Alarms 29..........................................

Performance 31......................................

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Third Party Networking 32.............................

APPENDIX A -- USER INTERFACE MENUS 33............

APPENDIX B -- THIRD PARTY POINTS LIST 41..........

APPENDIX C -- EQUIPMENT TOUCH

NAVIGATION SCREENS 45..............

RTUOPENSTART--UPSHEET 49.......................

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. Wear safety glasses and work gloves. Have fire extinguisher available. Read these

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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

instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety--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 result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Disconnect all power to the unit before performing maintenance or service. Unit may automatically start if power is connected.

. When you see this symbol on the unit and in

WARNING

GENERAL

The RTU Open controller is an integrated component of the Carrier rooftop unit. Its internal application programming provides optimum performance and energy efficiency. RTU Open enables the unit to run in 100% stand--alone control mode, Carrier’s i--Vu or a Third Party Building Automation System (BAS). On--board DIP switches allow you to select your protocol (and baud rate) of choice among the four most popular protocols in use today: BACnet and LonWorks. (See Fig. 1.)

NOTE: Lon Works requires addition of LonWorks Option card.

Carrier’s diagnostic display tools such as Equipment Touch or Field Assistant can be used with the RTU Open controller. Access is available via a 5--pin J12 access port or Rnet communication network.

Open network,

, Modbus, Johnson N2

SENSOR/ACCESSORY

INSTALLATION

There are a variety of sensors and accessories available for the RTU Open. Some of these can be factory or field installed, while others are only field installable. The RTU Open controller may also require connection to a building network system or building zoning system. All field control wiring that connects to the RTU Open must be routed through the raceway built into the corner post of the unit or secured to the unit control box with electrical conduit. The unit raceway provides the UL required clearance between high and low-voltage wiring. Pass the control wires through the hole provided in the corner post, then feed the wires thorough the raceway to the RTU Open. Connect the wires to the removable Phoenix connectors and then reconnect the connectors to the board. See Fig. 1 and Table 1 for board connections and Fig. 2 Through Fig. 5 for Typical Factory RTU Open wiring.

IMPORTANT: Refer to the specific sensor or accessory instructions for its proper installation and for rooftop unit installation refer to base unit installation instructions and the unit’s wiring diagrams.

WARNING

ELECTRICAL SHOCK HAZARD

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

Disconnect electrical power and use lock--out tags before wiring the RTU Open controller.

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Input_2 (CO2/RH)

Input_1 (CO2/RH)

+24 VDC

Gnd

+24 VDC

Board Power

24 VAC IN

BO-2 (W2)

BO-1 (G)

Gnd

Input_3 (X)

BO-3 (W1)

BO-4 (Y2)

BO-5 (Y1)

Input_5 (SMK)

Input_4 (R)

Input _8 (Enthalpy)

AO-1 (ECON)

Configurable - Input_8

Configurable - Input_5

Configurable - Input_3

Input_9 (Humidistat)

Gnd

24 VAC

(AO-1)

(OAT)

(SAT)

Gnd

3-Volt Lithium Battery

LonWorks Option Card Port

BO-1 BO-2 BO-3 BO-4 BO-5

J22

AO-2

GND

(2-10V)

J13

J12

J17

J2J1

BO-6

BO-7

BO-8

Network Comm

0-10VDC

24 VAC

4-20mA

J5 J5

J22

VFD Output

J11

BO-6 (H) Humidimizer

BO-7

(Reversing Valve/High Speed Fan/Y3)

BO-8 (Power Exhaust)

24 VAC

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Example set for BACnet MS/TP and 76.8K baud (1, 2, and 4 ON) Recommended for all i-Vu Open installations

J15

J20

Protocol Selector SPT (temp input) BACnet, Modbus, or N2

*Remove both for 0-5V

SPT (common)

SPT (offset input)

J19

(LON connection J15)

J14

Fig. 1 -- RTU Open Control Module

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POINT NAME

Space Temp / Zo ne Temp zone_temp AI (10K Thermistor) J 2 0 --- 1 & 2 Analog Input 10 Supply Air Temperature sa_temp AI (10K Thermistor) J 2 --- 1 & 2 Analog Input 6 Outside Air Temperature oa_temp AI (10K Thermistor) J 2 --- 3 & 4 Analog Input 7 Space Temperature Offset Pot stpt_adj_offset AI (100K Potentiometer) J2 0 --- 3 & 4 Analog Input 11 Safety Chain Feedback safety_status BI (24 VAC) J 1 --- 9 Binary Input 4 Compressor Safety Status Fire Shutdown Status firedown_status BI (24 VAC) J 1 --- 1 0 Binary Input 5 Enthalpy Status enthalpy_status BI (24 VAC) J 2 --- 6 & 7 Binary Input 8 Humidistat Input Status humstat_status BI (24 VAC) J 5 --- 7 & 8 Binary Input 9 Zone Temperature n/a n/a J 1 3 --- 1 --- 4 Rnet

Indoor Air CO2 iaq A I ( 4 --- 2 0 m A ) Outdoor Air CO2 oaq A I ( 4 --- 2 0 m A ) Analog Input 1 Space Relative Humidity space_rh A I ( 4 --- 2 0 mA ) Analog Input 10 Supply Fan Status Filter Status Door Contact Remote Occupancy input IGC input

Economizer Output econ_output AO (4---20mA) J2 --- 5 Analog Output 1 Supply Fan VFD vfd_output A O ( 2 --- 1 0 V d c ) J 2 2 --- 1 & 2 Analog Output 2 Supply Fan Relay sfan BO Rela y (24VAC, 1A) J 1 --- 4 Bina ry Output 1 (G) Cool 1 Relay State comp_1 BO Relay (24VAC, 1A) J 1 --- 8 Binary Output 5 (Y1) Cool 2 Relay State comp_2 BO Relay (24VAC, 1A) J 1 --- 7 Binary Output 4 (Y2) Cool 3 Relay State comp_3 BO Relay (24VAC, 1A) J 1 1 --- 5 & 6 B inary Output 7 (Y3) Heat 1 Relay State heat_1 BO Relay (24VAC, 1A) J 1 --- 6 B inary Output 3 (W1) Heat 2 Relay State heat_2 BO Relay (24VAC, 1A) J 1 --- 5 B inary Output 2 (W2)

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Power Exhaust Relay State pexh BO Relay (24VAC, 1A) J11---2&3(N.O.) Binary Output 8 (PE) Dehumidification Relay dehum BO Relay (24VAC, 1A) J11---7&8(N.O.) Binary Output 6

(1)

Safety Chain Feedback: 24 Vac required at this terminal to provide “Run Enable” status. See Input/Output section for additional instructions.

(2)

These inputs are conf igurable. If installed, they take the place of the default input on the specific channel. See appropriate Input Configuration S ection for wiring and setup instructions.

(3)

Pa r a l l e l p i n s J 5 --- 1 = J 2 --- 6 , J 5 --- 3 = J 1 --- 1 0 , J 5 --- 5 = J 1 --- 2 a r e u s e d f o r f i l e d i n s t a l l a t i o n .

(4)

Refer to the input configuration and accessory sections f or more detail.

(2)

(1)

(2)

BACnet OBJECT

NAME

comp_status BI (24 VAC) J 1 --- 2 Binary Input 3

sfan_status BI (24 VAC) filter_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

door_contact_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

occ_contact_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

igcovr_status BI (24 VAC) Binary Input 9. Mandatory input on gas heat units.

TYPE OF I/O

DEDICATED INPUTS

CONFIGURABLE INPUTS

Sensors and Accessories

The RTU Open controller is configurable with the following field-supplied sensors:

NOTE: Supply air temperature sensor (33ZCSENSAT) is factory-installed.

S Space temperature sensor (ZS--CAR, ZS--C--CAR,

ZS--H--CAR, ZS--HC--CAR, ZSPL--C--CAR, ZSPL--H--CAR, ZSPL--HC--CAR, ZSP--CAR, ZSP--C--CAR, ZSP--H--CAR, ZSP--HC--CAR , 33ZCT55SPT, 33ZCT56SPT, or 33ZCT59SPT)

S Indoor air quality sensor (ZS--C--CAR, ZS--HC--CAR,

Z S P L -- C -- C A R , Z S P L -- H C -- C A R , Z S P -- C -- C A R , ZSP--HC--CAR, 33ZCSPTCO2--01, 33ZCSPTCO2LCD--01, 33ZCT55CO2--02, or 33ZCT56CO2--02) required for demand control ventilation.

S Outdoor air quality sensor (33ZCSPTCO2--01,

33ZCSPTCO2LCD--01)

aspirator box (C33ZCCASPCO2) required for CO

S CO

return duct/outside air applications

S Outdoor air enthalpy switch (33CSENTHSW) S Return air enthalpy sensor (33CSENTSEN) required for

differential enthalpy control

S Space relative humidity sensor (33ZCSENSRH-02) S Duct relative humidity (33ZCSENDRH-02) S Humidistat (--HL--38MG-029) (not permitted for use on

48LC 07--26 units due to same input as IGC input)

S Smoke Detectors (CRSMKSEN002A00,

CRSMKKIT002A00)

S Fan and/or Filter Status (CRSTATUS001A00,

CRSTATUS005A00)

CONNECTION PIN

J 4 --- 2 & 3 o r J 4 --- 5 & 6

J 5 --- 1 & 2 o r J 5 --- 3 & 4 , J 5 --- 5 & 6 o r J 5 --- 7 & 8

OUTPUTS

User Interfaces

S Field Assistant (USB-TKIT required) S Wall mounted Equipment Touch S Wall mounted System Touch

Install Analog Sensors

Supply Air Sensor (SAT)

The factory supplies the discharge (supply) air sensor with the unit and is pre--wired.

LC 04--- 12 HC/TC 04--- 16 HCQ 04 --- 12 T C Q 0 4 --- 1 4

LC 14--- 26 HC 17--- 24 TC/TCQ 17 ---30

OutdoorAirSensor(OAT)

The OAT is supplied with the economizer option or accessory. It is wired through the 12-pin plug (PL6) in the return air section of the unit and is mounted on the

economizer assembly.

Space Temperature Sensor (SPT)

There are 2 types of space temperature sensors available from Carrier, resistive input non-communicating (T55, T56, and T59) and Rnet communicating (ZS--CAR, ZS--C--CAR, ZS--H--CAR, ZS--HC--CAR, ZSPL--C--CAR, ZSPL--H--CAR, Z S P L -- H C -- C A R , Z S P -- C A R , Z S P -- C -- C A R , Z S P -- H -- C A R , ZSP--HC--CAR) sensors. Each type has a variety of options consisting of: timed override button, set point adjustment, a LCD screen, combination of humidity or CO communication tie in. Space temperature can be also be written to from a building network or zoning system. However, it is still recommended that return air duct sensor be installed to allow stand-alone operation for back-up.

NUMBER(S)

(4)

Unit/Size SAT Shipping Location/Installation Location

CHANNEL DESIGNATION

Analog Input 2

BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

(3)

The SAT is secured to the unit’s supply duct opening. This sensor must be relocated into the supply duct during unit installation.

The SAT is mounted through the side of the heat chamber below the fan deck, and does NOT require relocation.

Refer to the configuration section for details on controller configurations associated with space sensors.

Table 1 – RTU Open Inputs and Outputs

sensing and

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Fig. 2 -- Typical Factory Option Wiring -- 50LC 14--26 Shown

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Fig. 3 -- Typical Factory Option Wiring -- 48LC 04--06 Shown

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Fig. 4 -- Typical Factory Option Wiring -- 48TC 17--30 Shown

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Fig. 5 -- Typical Factory Option Wiring -- 50HC 17--28 Shown

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Resistive Non--Communicating Sensor Wiring

For sensor with setpoint adjustment up to 1000 ft (305m), use three-conductor shielded cable 20 gauge wire to connect the sensor to the controller. For non set point adjustment (slidebar) or return air duct sensor, an unshielded, 18 or 20 gauge, two-conductor, twisted pair cable may be used. Below is the list of the connections of the SPT to the RTU Open, refer to Fig. 6 and 7 for typical connections at the sensor.

S J20-1 = temperature sensor input (SEN) S J20-2 = sensor common S J20-3 = Setpoint adjustment input (SET)

NOTE: See Fig. 8 for space temperature sensor averaging. T55/56 Override button will no longer function when sensors are averaged. Only Sensor 1 T56 STO input can be used.

SW1

Cool Warm

SEN

SET

BLK (T56)

BRN (GND) BLU (SPT)

SENSOR WIRING

JUMPER TERMINALS AS SHOWN

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Fig. 6 -- Space Temperature Sensor

Typical Wiring (33ZCT56SPT)

BLK (STO)

BRN (COM)

BLU (SPT)

OR SET SEN

OPB COM- PWR+

24 VAC

NOTE: Must use a separate isolated transformer.

J20-3

J20-2

J20-1

SENSOR WIRING

POWER WIRING

C10291

Fig. 7 -- Space Temperature Sensor

Typical Wiring (33ZCT59SPT)

Rnet Communicating Sensor Wiring

The Rnet bus allows local communication with the RTU Open, including communicating sensors. The Rnet bus can hold up to 6 devices in the following combinations wired in daisy-chain or hybrid configuration:

S 1-4 ZS--CAR sensor(s) S 1 ZSPL--CAR or ZSP--CAR sensor S 1-4 SPS sensor(s), and 1ZSPL--CAR or ZSP--CAR sensor S Any of the above combinations, plus CO

or RH

combination

NOTE: Additional ZS sensors must be addressed. Use the jumpers on the ZS sensor’s circuit board and refer to the sensor installation instructions for addressing.

For Rnet wiring up to 500ft (152m), use 18 AWG 4 conductor unshielded plenum rated cable. The RTU Open’s J13-RNET connection has a 4 pin Phoenix connector wired as described below, Fig. 9 shows sensor Rnet wiring.

S RNET -- 1 = Signal ground (GND) S RNET -- 2 = Signal (Rnet+) S RNET -- 3 = Signal (Rnet--) S RNET -- 4 = Power (+12v)

Sensor Averaging

Non--communicating sensors:

See Fig. 8 for space temperature sensor averaging configurations, only combinations of 4 or 9 sensors will operate correctly.

NOTE: T55/T56 Override button will no longer function when sensors are averaged. Only 1 T56 STO input can be used. Non--communication CO

sensors can not be

averaged.

Communicating sensors:

Any combination of sensors described in the “Rnet Communicating Sensor Wiring” section can be used.

NOTE: Communicating CO

sensors and RH sensors can

be averaged if within the realm described.

CO2 Sensor(s) (IAQ and OAQ)

The indoor air quality (IAQ) and outdoor air quality (OAQ) sensors monitor carbon dioxide (CO information is used to monitor the quality of air in terms of parts per million (PPM). The same sensor is used for inside, outside, and duct monitoring, except an aspirator box is required for outside and duct mounting. The CO sensor is preset for a range of 0 to 2000 ppm and a linear mA output of 4 to 20. The rooftop unit may have a factory installed CO

sensor on the side of the economizer

assembly in the return air section of the unit and is pre-wired and pre-configured at the factory. For field installed sensors, a field supplied transformer must be used to power the sensor. Refer to the instructions supplied with the CO

sensor for electrical requirements

and terminal locations. RTU Open configurations must be changed after adding a CO for typical CO

sensor wiring.

sensor. See below and Fig. 10

S J4--2 or J4--5 = 4--20mA signal input S J4--3 or J4--6 = signal common

NOTE: The factory used J4-2&3 for CO inputs.

) levels. This

(IAQ) sensor

48---50LHTCQ---01T

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Combination Temperature and CO2Sensor

If using a combination temperature and CO

sensor (33ZCT55CO2--02 or 33ZCT56CO2--02), refer to the installation instructions provided with the sensor.

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J20

RED

BLK

RED

BLK

RED

BLK

SENSOR 2 SENSOR 3 SENSOR 4SENSOR 1

RED

BLK

RED

BLK

SPACE TEMPERATURE AVERAGING — 4 SENSOR NON-COMMUNICATING APPLICATION

RED

BLK

SENSOR 1

RED

SENSOR 4

RED

BLK

SENSOR 2

RED

BLK

SENSOR 5

RED

BLK

SENSOR 3

RED

BLK

SENSOR 6

LEGEND

Factory Wiring

Field Wiring

SENSOR 7

SPACE TEMPERATURE AVERAGING — 9 SENSOR NON-COMMUNICATING APPLICATION

Fig. 8 -- Space Temperature Averaging for Non--Communicating Sensors

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Fig. 9 -- Typical Rnet Communication Sensor Wiring

RED

BLK

SENSOR 8

RED

BLK

SENSOR 9

To controller

24 Vac Line

8 7 6 5 4

2 1

24 Vac or Vdc

Dedicated Transforme

SENSOR LEGEND

1 +24 Vac/Vdc 2 Gnd (-24 Vac/Vdc) 4 -Thermistor 5 +Thermistor 6 4-20 mA 7 SIG COM 8 0-5 Vdc

Fig. 10 -- Indoor/Outdoor Air Quality (CO2)Sensor

(33ZCSPTCO2--01 or 33ZCSPTCO2LCD--01)

Typical Wiring Diagram

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Relative Humidity Sensors (Space or Duct Mounted)

The accessory space humidity sensor or duct humidity sensor is used to measure the relative humidity of the air within the space or return air duct. The RH reading is used to control the Humidi-MiZer

option of the rooftop unit. For wiring distances up to 500 ft (152m), use a 3-conductor, 18 or 20 AWG shielded cable. The shield must be removed from the sensor end of the cable and grounded at the unit end. The current loop power for the sensor is provided by the RTU Open controller as 24vdc. Refer to the instructions supplied with the RH sensor for electrical requirements and terminal locations. RTU Open configurations must be changed after adding a RH sensor. See below and Figs. 11 & 12 for typical non--communicating RH sensor wiring.

S J4--1 or J4--4 = 24vdc loop power S J4--2 or J4--5 = 4--20mA signal input

NOTE: The factory default for dehumidification control is a normally open humidistat.

Installing Discrete Inputs

Compressor Safety

The compressor safety input provides the RTU Open with feedback to when the compressor is not running and should be. This feedback can be provided by a Compressor Lock-Out (CLO) device or current switch when field installed. Compressor safety is a dedicated input on the configurable input 3 and tells the RTU Open when the compressor is locked out. The normal condition for compressor safety is good operation. A normally open compressor safety is the factory default for all units. Follow specific accessory instructions if installing a CLO device. The CLO should wire into the unit’s Integrated Staging Control (ISC) board (48/50LC 07--26) or Central Terminal Board (CTB) (all 48/50TC(Q), 48/50HC(Q), and 04--06 48/50LC units).

NOTE: Input 3 can also be wired into J--5.

MOUNTING HOLES

Gnd

Vin

SW2

123456

a33-9141

Vin - J4 -1 or J4 -4 24Vdc Io - J4 -2 or J4 -5 4 -20mA output

Fig. 11 -- Space Relative Humidity Sensor Typical Wiring

WIRING OPENING

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Humidistat

The accessory humidistat provides the RTU Open insight to the relative humidity in the space. The humidistat reads the RH level in the space and compares it to its setpoint to operate a dry contact. The humidistat is a dedicated input on the configurable input 9 and tells the RTU Open when the RH level is HIGH or LOW. The normal condition for humidity is LOW. A normally open humidistat is the factory default control for the Humidi-MiZer option. To wire in the field:

S J5--8 = 24 VAC source for dry contact S J5--7 = Signal input

NOTE: Not permitted for use on 48LC 07--26 units due to same input as IGC input.

Single Enthalpy (Outdoor Enthalpy)

The outdoor enthalpy switch/receiver (33CSENTHSW) senses temperature and humidity of the air surrounding the device and calculates the enthalpy when used without an enthalpy sensor. The relay is energized when enthalpy is high (above 28 BTU/lb OR dry bulb temperature is above 75_F) and de-energized when enthalpy is low (below 27 BTU/lb AND dry bulb temperature is below

74.5_F). The enthalpy input is dedicated to input 8 and tells the RTU Open when the outside air enthalpy is HIGH or LOW. The normal condition for the enthalpy input is HIGH. Enthalpy is configured on input 8 in the factory when it is added as an option.

NOTE: The enthalpy calculation is done using an average altitude of 1000 ft above sea level.

For field installation, refer to the enthalpy accessory instructions. For wiring see below and Fig. 10. The RTU Open board provides 24vac on one of the two loose grey wires in the return air section of the rooftop near the 12-pin economizer plug. To determine the correct grey, measure the voltage on the wires with power applied to the unit. If 24-vac is sensed, then that is the grey wire that is connected to the RTU Open board at J2-7. The other is the signal for input 8, connect it to the LOW Enthalpy terminal on the enthalpy switch/receiver. Tie into the 12-pin economizer plug on pin 4 or the black wire connected to the actuator for the enthalpy’s GND connection. Power can also be provided direct from the unit transformer and J5 terminal on the RTU Open.

S J2--7orJ5--2=24VACforenthalpyswitchpower S J2--6 or J5--1 = input signal

Differential Enthalpy

Differential enthalpy control requires both an enthalpy switch/receiver (33CSENTHSW) and an enthalpy sensor (33CSENTSEN). The enthalpy sensor must be installed in the field as the factory can only provide single enthalpy. The enthalpy sensor must be mounted in the return airstream and calculates the enthalpy of the indoor air. The relay is energized when the enthalpy detected by the return air enthalpy sensor is less than the enthalpy at the enthalpy switch/receiver. The relay is de-energized when the enthalpy detected by the return air enthalpy sensor is greater than the enthalpy at the enthalpy switch/receiver (differential enthalpy control).

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J4-1 or J4-4 + 24 VDC Supply Voltage

J4-2 or J4-5 (-)4 to 20 mA Current Loop Output to RTU Open

Fig. 12 -- Duct Relative Humidity Sensor Typical Wiring

4-20mAVAC

VDC

GND 0-5V

0-10V

SPAN

123456

Relative Humidity Sensor (Polarized Male Connector)

ZERO

C12756

To wire return air enthalpy sensor:--MP

48---50LHTCQ---01T

Connect the 4-20 mA In terminal on the enthalpy switch/ receiver to the 4-20 mA Out terminal on the return air enthalpy sensor. Connect the 24-36 VDC Out terminal on the enthalpy switch/receiver to the 24-36 VDC In terminal on the return air enthalpy sensor. (See Fig. 13.)

Fire Shutdown

The fire shutdown input is provided for unit shutdown in response to a fire alarm or smoke detector. The fire shutdown input is dedicated to input 5 and tells the RTU Open when to shutdown due to smoke detection or fire alarm system. The normal condition for fire shutdown is there is no fire alarm. The unit may have factory installed smoke detector(s); refer to the base unit installation instructions for details on any adjustments required during unit installation. Fire shutdown is always factory configured for a normally open smoke detector.

For field installation of a smoke detector see instructions for that specific accessory. See below and the troubleshooting section for wiring at the unit’s Integrated Staging Control (ISC) board (48/50LC 07--26) or Central Terminal Board (CTB) (all 48/50TC(Q), all 48/50HC(Q), and 04--06 48/50LC units).

S ISC or CTB -- UNIT SHUTDOWN -- 24v OUT = 24

VAC source

S ISC or CTB -- UNIT SHUTDOWN -- Smoke Alarm =

Signal input to RTU Open

NOTE: Input 5 can also be wired into J5--3.

Filter Status

The filter status accessory is a field-installed accessory. This accessory detects plugged filters. When installing this accessory, the unit must have a free input (input 3, 5, 8, or 9). One of the dedicated functions (Humidistat, Fire shutdown, Enthalpy, or Compressor safety) must not be in

use to configure Filter Status. Refer to the configuration section for details on configuring inputs for specific functions and state. Refer to Fig. 1 for wire terminations at J5.

Fan Status

The fan status accessory is a field-installed accessory. This accessory detects when the indoor fan is moving air. When installing this accessory, the unit must have a free input (input 3, 5, 8, or 9). One of the dedicated functions (Humidistat, Fire shutdown, Enthalpy, or Compressor safety) must not be in use to configure Fan Status. Refer to the configuration section for details on configuring inputs for specific functions and state. Refer to Fig. 1 for wire terminations at J5.

Remote Occupancy

The remote occupancy accessory is a field-installed accessory. This accessory provides an input to change the units occupancy status. When installing this accessory, the unit must have a free input (input 3, 5, 8, or 9). One of the dedicated functions (Humidistat, Fire shutdown, Enthalpy, or Compressor safety) must not be in use to configure remote occupancy. Refer to the configuration section for details on configuring inputs for specific functions and state. Refer to Fig. 1 for wire terminations at J5.

IGC Override

The IGC Override input is factory--installed for 48LC 07--26 gas heat units. This input provides an indication that the gas valve is stuck open and the heat is still operating after any call for heating has been dropped. This function requires the use of input 9. Any of the other dedicated functions (Humidistat, Fan Status, Filter Status, Remote Occupancy, or Door Contact) will not be in use if IGC Override is configured. Refer to the configuration section for details on configuring inputs for specific functions and state. Refer to Fig. 2 for wire terminations.

Page 13

Fig. 13 -- Enthalpy Switch and Sensor Wiring

C10821

Communication Wiring--Protocols

General

Protocols are the communication languages spoken by control devices. The main purpose of a protocol is to communicate information in the most efficient method possible. Different protocols exist to provide different kinds of information for different applications. In the BAS application, many different protocols are used, depending on manufacturer. Protocols do not change the function of a controller; just make the front end user different.

The RTU Open can be set to communicate on four different protocols: BACnet, Modbus, N2, and LonWorks. Switch 3 (SW3) on the board is used to set protocol and baud rate. Switches 1 and 2 (SW1 and SW2) are used to set the board’s network address. See Fig. 14 and 15 for protocol switch settings and address switches. The 3rd party connection to the RTU Open is through plug J19. See Fig. 16 for wiring. Refer to the RTU Open v3 Integration Guide for more detailed information on protocols, 3rd party wiring, and networking.

NOTE: Power must be cycled after changing the SW1--3 switch settings.

i--VuRBuilding Automation System

i--Vu is a Carrier front-end and Building Automation System (BAS). It is a web based network system that uses a native BACnet over MS/TP communication protocol. The speed of the network can range from 9600 to 76,800 baud. Open controllers communicate with a proprietary language called Linkage in i--Vu. Linkage is established automatically and allows the flow of specific data across Open devices. Refer to i--Vu literature for more information on i--Vu.

BACnetRMS/TP

BACnet Master Slave/Token Passing (MS/TP) is used for communicating BACnet over a sub--network of BACnet--only controllers. This is the default Carrier communications protocol. Each RTU Open module acts as an MS/TP Master. The speed of an MS/TP network can range from 9600 to 76.8K baud. Physical Addresses can be set from 01 to 99.

48---50LHTCQ---01T

Page 14

SW3 Protocol Selection

PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1 BACnet MS/TP

(Master)

Modbus (Slave)

N2 (Slave)

LonWorks Unused ON ON OFF ON OFF OFF ON

NOTE: DS = Dip Switch BACnet MS/TP SW3 example shown

BAUD RATE DS2 DS1

9600 OFF OFF 19,200 ON OFF 38,400 OFF ON 76,800 ON ON

Unused OFF OFF OFF ON OFF Select Baud Select Baud

Unused OFF OFF ON ON OFF Select Baud Select Baud

Unused OFF OFF OFF ON ON OFF OFF

Baud Rate Selections

Fig. 14 -- RTU Open SW3 Dip Switch Settings

48---50LHTCQ---01T

Modbus

The RTU Open module can speak the Modicon Modbus RTU Protocol as described in the Modicon Modbus Protocol Reference Guide, PI----MBUS----300 Rev. J. The speed of a Modbus network can range from 9600 to 76.8K baud. Physical Addresses can be set from 01 to 99.

Johnson N2

N2 is not a standard protocol, but one that was created by Johnson Controls, Inc. that has been made open and available to the public. The speed of N2 network is limited to only 9600 baud. Physical Addresses can be set

C10815

Fig. 15 -- RTU Open Address Switches

from 01 to 99.

LonWorks

LonWorks is an open protocol that requires the use of Echelon’s Neuron microprocessor to encode and decode the LonWorks packets. In order to reduce the cost of adding that hardware on every module, a separate LonWorks Option Card (LON--OC) was designed to connect to the RTU Open.

This accessory card is needed for LonWorks and has to be ordered and connected using the ribbon cable to plug J15. The RTU Open’s baud rate must be set to 38.4k to communicate with the LonWorks Option Card. The address switches (SW1 & SW2) are not used with LonWorks.

C07166

Fig. 16 -- Network Wiring

C10816

Page 15

LON OC Rev.4

COMM

OPTION

Network

Net

Connector

Local Access

Wall Mounted Equipment Touch

The Equipment Touch is a wall mounted interface used to connect to the RTU Open to access the control information, read sensor values, and maintenance. This is an accessory interface that does not come with the RTU Open controller. You wire the Equipment Touch to the RTU Open’s J13 local access port. There are 2 password protected levels in the display (User and Admin). See the Equipment Touch Installation and Setup Guide for more information. See Appendix A for navigation and screen content.

1 2

Fig. 17 -- LON--OC and LON Network Wiring

Access

Port

J15

C12750

Field Assistant

Field Assistant is a computer program included with the purchase of the Tech Tool Kit (USB-TKIT). This is a field Tech Tool to set-up, service, or download application software to the RTU Open controller and includes a USB Link Cable. The link cable connects a USB port to the J12 local access port. The Field Assistant’s menu structure is similar and functions the same as i--Vu

P1 P1

. See Fig. 18.

48---50LHTCQ---01T

Connect to computer’s USB port

J12

P5 P5

Connect to

the Local

USB Link Kit

Access port

Fig. 18 -- PC Running Field Assistant

CR2032

J15

COMM

MSB LSB

SW1 SW2

OPTION

SW3

RTU Open

LOCAL

ACCESS

PORT

J12

*Therm

UI-11

RNET

UI-10

*Therm

J13

+12 DVC RnetRnet+ GND

GND

TXRX

J20

C14131

Page 16

START--UP

IMPORTANT: Follow the base unit’s start-up sequence

documented in its specific instructions. Use the base unit’s start-up check list when performing the start-up. At the end of this manual there is an additional RTU Open Start-up Sheet to be completed and included with the base unit check list.

Besides the base unit start-up, there are a few steps to take to properly start-up the controls. RTU Open’s Service Test function should be used to assist in the base unit start-up and also allows verification of output operation. Controller configuration is also part of start-up. This is especially important when field accessories have been added to the unit. The factory pre-configures options installed at the factory. There may also be additional installation steps or inspection required during the start-up process.

Additional Installation/Inspection

Inspect the field installed accessories for proper installation, making note of which ones do or do not require configuration changes. Inspect the RTU Open’s Alarms for initial insight to any potential issues. See

48---50LHTCQ---01T

troubleshooting section for alarms. Inspect the SAT sensor for relocation as intended during installation. Inspect special wiring as directed below.

Power Exhaust Relay Power

The relay used by the RTU Open board to control power exhaust is a dry contact which means it does not have 24vac. This 24vac must be connected to the relay to allow it operate the power exhaust relay in the PE accessory. A 24vac source should be provided to the J11-2 pin on the RTU Open. This can be provided by the unit’s transformer from various sources. The “R” terminal on the unit’s Integrated Staging Control (ISC) board (on 48/50LC 07--26 units) or the “R” terminal on the Central Terminal Board (CTB) (on all 48/50TC(Q), 48/50HC(Q) and 04--06 48/50LC units) is a logical source.

NOTE: Factory installed power exhaust comes pre--configured and does not require routing 24vac as described above. This factory installed option is only available on the following vertical air flow units: 48/50TC(Q) 17--30, 48/50HC 16--30, and 48/50LC 14--26.

Service Test

The Service Test function can be used to verify proper operation of compressors, heating stages, indoor fan, power exhaust fans, economizer, and dehumidification. Use of Service Test is recommended at initial system start up and during troubleshooting. See Appendix A for Service Test Mode table.

Service Test mode has the following changes from normal operation:

S Outdoor air temperature limits for cooling circuits,

economizer, and heating are ignored.

S Normal compressor time guards and other staging

delays are ignored.

S The status of Alarms (except Fire and Safety chain) is

ignored, but all alerts and alarms are still broadcasted on the network.

Service Test can be turned ON/OFF from Field Assistant,

from the network, or from the Equipment or System Touch. Once turned ON, other entries may be made with the display or through the network. To turn Service Test on, change the value of Test Mode to ON, to turn Service Test off, change the value of Test Mode to OFF.

Service Test allows testing of each controller output. Binary Service Test functions are on when the Default

Value is set to Enable and off when set to Disable. The output of the Analog Service Test is controlled by

percentage (0--100%) entered into the Default Value. It is recommended to return every Service Test variable to

Disable or 0.00 after testing each function (unless that test variable must be active to test a subsequent function. As in Compressor 2 Test).

All outputs return to normal when Service Test is set to Disable. In addition, Service Test also returns to Disable after 1 hour.

Fan Test

This point allows the board’s fan output to be manually turned On (Enable) and Off (Disable). Other test points that require the fan for operation will automatically turn the fan on and this point will still show “Disable.” Fan test can operate simultaneously with other Service Test Points. For units equipped with variable speed fans, the fan test will operate the unit’s fan at minimum VFD output speed.

High Speed Fan Test

Use the High Speed Fan Test to activate and deactivate the Supply Fan (BO--1) output. Note that this output is only applicable if Fan Control is set to Two Speed and Unit Type is NOT equal to HP O/B Ctrl.

Compressor 1 and Compressor 2 Test

The compressor test points are used to change output status for the individual compressors. Compressor starts are not staggered. The fan and heating service test outputs are reset to “Disable” for the compressor service tests. The Indoor fan and outdoor fans are controlled normally to maintain proper unit operation. All normal cooling alarms and alerts are functional.

NOTE: For the LC WeatherExpert size 07--26 units, each compressor stage can be operated independently.

Heat 1 and Heat 2 Test

The heat test points are used to change output status for the individual heat stages, gas or electric. The fans and cooling service test outputs are reset to “Disable” for the heat service tests. Indoor and outdoor fans are controlled normally to maintain proper unit operation. All normal heating alarms and alerts are functional.

Dehumidification Test

For units with the factory Reheat option, the dehumidification relay is used to change the output status to operate the circuits in different Reheat modes. Dehumidification relay on by itself puts all circuits running in Hot Gas Reheat dehumidification mode; dehumidification relay on and the cooling test (compressor test relays) on puts unit and or individual circuits in subcooling dehumidification mode. The fans and heating service test outputs are reset to “Disable” for the dehumidification service test. Indoor and outdoor fans are controlled normally to maintain proper unit operation. All normal cooling/dehum alarms and alerts are functional.

Page 17

Power Exhaust Test

This point allows the board’s power exhaust (PE) output to be manually turned On (Enable) and Off (Disable). Power Exhaust test can operate simultaneously with other Service Test Points.

Economizer Test

This point allows the board’s economizer output to be manually controlled from 0 to 100 % Open. Economizer test can operate simultaneously with other Service Test Points.

VFD Speed Test

This point activates the board’s 0--10vdc analog output that controls the unit’s supply fan VFD speed.

NOTE: This output is only applicable if Fan Control is set to Variable Speed.

NOTE: Service Test Mode does not timeout. Be sure to turn off test mode or cycle power to the RTU to return to normal operation.

Configuration

The RTU Open controller’s configuration points effect the unit’s inputs and operation. Review and understand the meaning and purpose of each configuration point before changing it from the factory default value. Use the RTU Open Start-up Sheet during configuration; fill in changed values if changed from factory default. There are three main configurations menus: SETPOINT, UNIT, and SERVICE.

Each configuration point is described below under its according menu. See Appendix A for menu structure.

Setpoint

Occupied Heating Setpoint -- The heating setpoint the

controller maintains during the occupied period.

Range = 40 - 90_F Default = 70_F

Occupied Cooling Setpoint – The cooling setpoint the controller maintains during the occupied period.

Range = 55 - 99_F Default = 76_F

Unoccupied Heating Setpoint – The heating setpoint the controller maintains during the unoccupied period.

Range = 40 - 90_F Default = 55_F

Unoccupied Cooling Setpoint – The cooling setpoint the controller maintains during the unoccupied period.

Range = 45 - 99_F Default = 90_F

Effective Heating Setpoint – The current setpoint value heating operation will control to.

Range = 0 - 120_F

Effective Cooling Setpoint – The current setpoint value cooling operation will control to.

Range = 0 - 120_F

Optimal Start - The earliest time prior to occupancy, at which the Optimal Start function may begin to adjust the effective setpoints. Setting this to 0 will disable optimal start.

Range = 0 - 4 hours Default = 4 hour

Occ Relative Humidity Setpoint – The space RH setpoint the controller maintains during the occupied period.

Range = 0 to the Unocc RH setpoint Default 60%

Unocc Relative Humidity Setpoint – The space RH setpoint the controller will maintain during the unoccupied period.

Range = 30-100% Default = 95%

DCV Max Ctrl Setpoint – The difference between indoor and outdoor CO ventilation damper position.

Range = 0-9999ppm Default = 650ppm

Power Exhaust Setpoint –Usedtodeterminewhenthe power exhaust operation will begin. This setpoint is based on the maximum fan speed. When the economizer position opens above this point, power exhaust operation will begin and when the damper position falls 5% below this point, the power exhaust will shutdown.

Range = 20-90% Default = 50%

NOTE: This setpoint is automatically adjusted if the Fan Type is set to Variable Speed or 2--Speed in order to maintain proper building pressure. The actual calculated value, Calculated PE Setpoint, is shown in MAINTENANCE.

NOTE: This point is only used when Continuous Occupied Exhaust = NO

level which results in maximum

Unit

Fan Mode – Sets the operation of the indoor fan when not

in cooling or heating mode. Refer to fan operation for details on each operation.

Range = Auto, Continuous, or Always On Default = Continuous

Power Fail Restart Delay -- Sets how long the controller delays normal operation after the power is restored. Typically used to prevent excessive demand when recovering from a power failure

Range = 0 - 30 sec Default = 5 sec

Fan Off Delay – Time delay in which the fan will continue run after being commanded off.

Range = 10 -300 sec Default = 90 sec

Minimum Cooling SAT – The supply air temperature must remain above this value to allow cooling with the economizer and/or compressors. There is 5_Fplusand minus deadband to this point. If the SAT falls below this value during cooling a compressor stage will be removed and/or the economizer will return to minimum position.

Range = 45 - 75_F Default = 50_F

Maximum Heating SAT – The supply air temperature must remain below this value to allow heating. There is 5_Fplus and minus deadband to this point. If the SAT falls below this value during heating the heat stages will begin to decrease until the SAT has dropped below this value.

Range = 85 - 150_F Default = 120_F

Vent Dmpr Pos / DCV Min Pos – Minimum damper position for ventilation during the occupied period when the fan is operating at full speed.

Range = 0 -- 100% open Default = 20% open

Economizer Purge Min Pos – The damper position used during the Pre--Occupancy Purge cycle prior to occupancy when Pre--Occupancy purge is active

Range = 0 -- 100% open Default = 40% open

Low Fan Econ Min Pos – The minimum damper position used for ventilation during the occupied period when the fan is operating at it’s lowest speed.

Range = 0 -- 100% open Default = 33% open

NOTE: This setpoint is only applicable if the Fan Type is set to Variable Speed or 2--Speed.

48---50LHTCQ---01T

Page 18

DCV Max Vent Damper Pos – This is the greatest position the economizer can open to while trying to control the indoor air quality levels

Range = 0 -- 75% open Default = 50% open

Supply Fan Service Alarm Timer – The timer set for the Supply Fan Runtime Alarm. After the number of hours set on this point is exceeded the corresponding alarm will be generated, and must be manually cleared in the maintenance menu after the maintenance has been completed. The timer will then begin counting its runtime again for the next due maintenance.

Range = 0 to 9999 hr Default = 600 hr

NOTE: If set to 0 hr this setpoint is disabled and its alarm will never be generated.

Comp 1 Service Alarm Timer – The timer set for the Compressor 1 Runtime Alarm. After the number of hours set on this point is exceeded the corresponding alarm will be generated, and must be manually cleared in the maintenance menu after the maintenance has been completed. The timer will then begin counting its runtime again for the next due maintenance.

48---50LHTCQ---01T

NOTE: Default = 0 hours, if set = 0 hr this point is

Range = 0 to 9999 hr Default = 0 hr

disabled and its alarm will never be generated. Comp 2 Service Alarm Timer – The timer set for the

Compressor 2 Runtime Alarm. After the number of hours set on this point is exceeded the corresponding alarm will be generated, and must be manually cleared in the maintenance menu after the maintenance has been completed. The timer will then begin counting its runtime again for the next due maintenance.

Range = 0 to 9999 hr Default = 0 hr

NOTE: Default = 0 hours, if set = 0 hr this point is disabled and its alarm will never be generated.

Filter Service Alarm Timer – The timer set for the Dirty Filter Alarm. After the number of hours set on this point is exceeded the corresponding alarm will be generated, and must be manually cleared in the maintenance menu after the maintenance has been completed. The timer will then begin counting its runtime again for the next due maintenance.

Range = 0 to 9999 hr Default = 600 hr

NOTE: Default = 600 hours, if set = 0 hr this point is disabled and its alarm will never be generated.

Pushbutton Override – Set to enable or disable the pushbutton override function of the locally installed space sensor.

Range = Disable/Enable Default = Enable

Door Alarm Delay -- Determines the amount of delay before a door alarm is generated.

Range = 0 to 3600 seconds Default = 60 seconds

Setpoint Adjustment – Set to enable or disable the setpoint adjustment function of the locally installed space sensor.

Range = Disable/Enable Default = Enable

Setpoint Adjustment Range -- Sets the slider range of a space sensor (with built in function). The slider is used to offset the control setpoint

Range = 0 to 5_F Default = 5_F

Cooling Lockout Temperature -- This defines the minimum outdoor air temperature that cooling mode can be enabled and run. If the OAT falls below this number during cooling the compressors will be de-energized

Range = --65 - 80_F Default = 45_F

Economizer High OAT Lockout Temp – If the outdoor air temperature rises above this value, economizer cooling will be disabled and dampers will return and stay at minimum position.

Range = 55 - 80_F Default = 75_F

Heating Lockout Temperature – This defines the maximum outdoor air temperature that heating mode can be enabled and run. If the OAT rises above this number during heating the heat stages will be de-energized.

Range = 35 -- 150_F Default = 65_

Pre--Occupancy Purge -- Enables or disables the use of a purge cycle immediately prior to the start of a scheduled occupied period.

Range = Enable/Disable Default = Disable

Purge Time -- The maximum amount of time used for a pre--occupancy purge.

Range = 0 to 240 minutes Default = 60 minutes

Unocc Free Cool Enable – Set to enable or disable the economizer for night time free cooling (NTFC) operation.

Range = Disable/Enable Default = Disable

Setpoint Separation – Sets the minimum separation gap in which setpoints can be set.

Range = 2 - 10_F Default = 5_F

Occupancy Source – Tells the controller which method of occupancy control to use in determining occupancy of the rooftop. Refer to Occupancy in the operation section for detail on each specific operation function.

Range = Always Occupied, BACnet Schedule,

BAS On/Off, or Remote Occ Input

Default =Always Occupied

Inputs

Input 1 Function – This input is an analog input and can

be configured to be one of four different inputs: No Sensor, IAQ Sensor, OAQ Sensor, or Space RH Sensor. Input 1 is wired to pin J4--4,5,6.

Default = No Sensor

Input 2 Function – This input is an analog input and can be configured to be one of four different inputs: No Sensor, IAQ Sensor, OAQ Sensor, or Space RH Sensor. Input 2 is wired to pin J4--1,2,3.

Software Default = No Sensor Factory Default = IAQ Sensor with factory

installed CO

NOTE: For Inputs 1 & 2, if using Carrier air quality sensors do not use 24Vdc from RTU Open board. External 24Vdc power supply required.

Input 3 -- This input is a discrete input and can be configured to be one of six different functions: No Function, Compressor Safety, Fan Status, Filter Status, Remote Occupancy, or Door Contact. This input can also be configured to be either a Normally Open (N/O) or a Normally Closed (N/C) switch. Input 3 is factory wired to pin J1-2. Field accessories can be wired to its parallel pin J5-5.

Factory Default = Compressor Safety and N/O

sensor

Page 19

Input 5 -- This input is a discrete input and can be configured to be one of six different functions: No Function, Fire Shutdown, Fan Status, Filter Status, Remote Occupancy, or Door Contact. This input can also be configured to be either a Normally Open (N/O) or a Normally Closed (N/C) switch. Input 5 is factory wired to pin J1-10. Field accessories can be wired to its parallel pin J5-3.

Software Default = Fire Shutdown and N/C Factory Default = Fire Shutdown and N/O

Input 8 -- This input is a discrete input and can be configured to be one of six different functions: No Function, Enthalpy Switch, Fan Status, Filter Status, Remote Occupancy, or Door Contact. This input can also be configured to be either a Normally Open (N/O) or a Normally Closed (N/C) switch. Input 8 is factory wired to pin J2-6. Field accessories can be wired to its parallel pin J5-1.

Software Default= Enthalpy Switch and N/O Factory Default = No Function and N/O without

factory installed enthalpy sensor

Input 9 -- This input is a discrete input and can be configured to be one of seven different functions: No Function, Humidistat, Fan Status, Filter Status, Remote Occupancy, Door Contact, or IGC Override. This input can also be configured to be either a Normally Open (N/O) or a Normally Closed (N/C) switch. Input 9 is factory and field wired to pin J5-7.

Factory Default = Humidistat and N/O

NOTE: For 48LC 07--26 Units (gas heat units) this decision is automatically set to IGC Override and is factory wired.

Space Sensor Type – This tells the controller what type of space sensor is installed to run the unit. The four types that can be used are: a standard 10k Type II thermistor (T55), sensor with a setpoint offset slider bar (T56), or a communicating sensor (SPT Sensor) and, ZS Sensor.

Range =T55, T56 (Use for T59), SPT Sensor,

or ZS Sensor

Default = T55

ZS Sensor Type -- The type of local space temperature sensor.

Range =ZS Base, ZS Plus, ZS Pro Default = None

T5x Override Duration – Sets the override time duration the unit will change from unoccupied to occupied when the override button is pushed on the space sensor.

Range = 0-24 hours Default = 1 hour

Rnet Port -- input for communicating sensor or Equipment Touch Terminal J13 -- 1, 2, 3, 4

Range = SPT Sensor, ZS Sensor, or

Equipment Touch

Default= None

Service Configuration

Unit Type – This tells the control what type of unit it is

controlling. Heat/Cool refers to gas and electric heat units. LC WeatherExpert refers to a special 3 stage/2 compressor unit. HP O/B Ctrl refers to a heat pump unit which requires reversing valve control. HP Y1/W1 Ctrl refers to a heat pump unit whose reversing valve is built in to the cooling or heating call. This decision is factory configured for the specific unit type as supplied.

NOTE: When unit type is set to LC WeatherExpert other configuration settings in the Service Configuration menu will become hidden from user’s view. The configurations that become hidden include Compressor Stages, Face Split Coil, Fan Control.

Compressor Stages – This refers to the number of mechanical cooling stages available on a specific unit. For LC size 07--26 units this setting is “Three Stage” and is not a visible menu configuration.

Factory Default = “Three Stage” for LC size

07--26 units

Economizer Exists – This indicates if there is an economizer installed on the unit.

Factory Default = NO if no economizer, or YES if

there is an economizer installed

Fan Control -- This refers to the type of fan control for the given unit. If Unit Type is selected to LC WeatherExpert, then this is set to Variable Speed, and is not a visible menu configuration.

Factory Default = Variable Speed for LC size

07--26 units.

VFD Input -- Defines the electrical control signal used by the VFD’s input. Applies to Variable Speed fan control only (LC size 07--26 units by default).

Range = 2--10VDC or 0--10VDC Factory Default = 2--10 VDC

Max VFD Output --ThemaximumVFDsignalRTUOpen supplies to the VFD as a percentage of its range. The balancer can set this to adjust the unit’s maximum airflow. Applies to Variable Speed fan control. (LC size 07--26 units by default)

Range = 33--100% Default = 100%

Min VFD Output -- The minimum VFD signal RTU Open supplies to the VFD as a percentage of its range. The balancer can set this to adjust the unit’s minimum airflow. Applies to Variable Speed fan control only (LC size 07--26 by default)

Range = 33--100% Default = 40%

Dehum Min VFD Output -- The minimum output signal supplied by RTU Open during dehumidification as a percentage of its range. Applies to Variable Speed fan control only (LC size 07--26 by default)

Range = 50--100% Default = 100%

Stage 1 SAT Setpoint -- The VFD Supply Air Setpoint during stage 1 cooling. Must be at least 4_F greater than Minimum Cooling SAT parameter

Range = 45 -- 75_F Default = 57_F

Stage 2 SAT Setpoint -- The VFD Supply Air Setpoint during stage 2 cooling. Must be at least 4_F greater than Minimum Cooling SAT parameter

Range = 45 -- 75_F Default = 57_F

Stage 3 SAT Setpoint -- The VFD Supply Air Setpoint during stage 3 cooling. Must be at least 4_F greater than Minimum Cooling SAT parameter

Range = 45 -- 75_F Default = 56_F

Heat Type – Indicates the type of heat which is installed in the unit. Electric is any unit without gas and a Gas unit is one which requires gas input for heating.

Factory Default = Gas for gas units and Electric for all other units (cooling only units and heat pumps)

48---50LHTCQ---01T

Page 20

Number of Heat Stages – Indicates how many heat stages are available for use. See configuration in Appendix A for details on specific unit configuration.

Factory Default =1 for single heat stage units

2 for dual stage units 0 for cooling only units

Continuous Occupied Exhaust – This point tells the controller when to run the power exhaust if equipped on the unit.

If set to YES, the power exhaust will be on all the time when in occupied mode and will be off when in unoccupied mode. If set to NO the power exhaust will be controlled by the Power Exhaust Setpoint.

Default = NO

RH Control -- Enables dehumidification control if an RH sensor is available and the unit has the Humidi--MiZer dehumidification option installed.

Range =Disable/Enable Default = Disable

(Enabled with Humidi--MiZer option)

DCV Control -- Enables demand controlled ventilation (DCV)ifvalidCO

48---50LHTCQ---01T

has an economizer installed.

sensor value is available and the unit

Range = Disable/Enable Default = Disable

System Space Temperature -- The network space temperature value that the controller is using for control (if applicable).

Range = N/A Default = --999.0_F

System Space RH -- The network relative humidity value that the controller is using for control (if applicable)

Range = N/A Default = --999.0%

System Space AQ -- The network indoor air quality (CO value that the controller is using for control (if applicable)

Range = N/A Default = --999.0 PPM

System Cool Demand Level -- The system cool demand level being received over the network

Range = N/A Default = 0--3

System Heat Demand Level -- The system heat demand level being received over the network

Range = N/A Default = --0--3

System Outdoor Air Temperature -- Allows the outdoor air temperature value to be network readable when enabled. Requires RTU Open to be equipped with an outdoor air temperature sensor

Range = N/A Default = --999.0_F

System Outdoor AQ -- Allows network readable value of OAQ for calculation during differential OAQ CO and IAQ CO

levels to drive the IAQ control

Range = N/A Default = --999.0 PPM

System Fire / Smoke -- Allows network readable fire/smoke signal to invoke shutdown action in the RTU

Range = N/A Default = OFF

Indoor CO

value when the board reads 4 mA at input 1 or 2.

Sensor Value @ Min mA – Sets the indoor

Range = 0 to 9999 ppm Default = 0 ppm

Indoor CO

value when the board reads 20 mA at input 1 or 2.

Sensor Value @ Max mA – Sets the indoor

Range = 0 to 9999 ppm Default = 2000 ppm

levels

Outdoor CO

value when the board reads 4 mA at input 1 or 2.

Sensor Value @ Min mA – Sets the outdoor

Range = 0 to 9999 ppm Default = 0 ppm

Outdoor CO2Sensor Value @ Max mA – Sets the outdoor

value when the board reads 20 mA at input 1 or 2.

Range = 0 to 9999 ppm Default = 2000 ppm

NOTE: The indoor and outdoor min and max mA setting are used to set the linear curve of mA vs. PPM.

OPERATION

The RTU Open will control the compressors, economizer and heating outputs based on its space temperature input and setpoints. It can also be controlled by a building

IAQ

Open

control system or zoning system. An optional CO

sensor mounted in the space can influence the economizer minimum position. The RTU Open has a hardware clock that can allow scheduling for stand-alone operation. The RTU Open’s default is to control to occupied setpoints all the time, until a type of occupancy control is set. The following sections describe the operation for the functions of the RTU Open.

Occupancy

Occupancy is the fundamental overall control of equipment. The unit can be in one of two states: Occupied or Unoccupied. These are usually referred to as periods because they represent periods of any given day. Before RTU Open can operate specific functions of the equipment it is installed on, occupancy must be determined. There are four different ways RTU Open can determine occupancy. These are described below and selected by the configuration point Occupancy Source.

Always Occupied (Default)

)

The unit will not determine occupancy and continuously run in the occupied state or period. RTU Open ships from the factory with this setting to allow immediate operation.

BACnetRSchedule

When Occupancy Source is set to BACnet Schedule, RTU Open will use a schedule to change occupancy based upon a day of week and a time period. Local time and date should be set in the RTU Open for this function to operate properly. This function applies if setting a local schedule in the RTU Open or if applying the unit to an i--Vu Building Automation System or an Open zoning system. An Open network schedule can override a local schedule within the unit. A space sensor push button override is only available when running a local or Open schedule. The push button will override an unoccupied period to occupied for the specified time duration.

BAS On/Off

When Occupancy Source is set to BAS On/Off, RTU Open follows occupancy based on an On/Off command to the BAS ON/OFF software point. An on command sets the occupancy to occupied, and an off command sets it to unoccupied. The Building Automation System can be speaking BACnet, Modbus, N2, or LON and is writing to the BAS On/Off point in the open protocol point map.

Remote Occ Input

When Occupancy Source is set to Remote Occ Input, RTU Open follows occupancy based on the remote occupancy

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switch input. Inputs 3, 5, 8, and 9 on plug J5 can be hard-wired to command the unit’s occupancy. The Occupancy Contact point show the status as on or off, on is occupied and off is unoccupied.

Indoor (Supply) Fan

The indoor fan can be configured to operate in three different manors. The configuration point Fan Mode determines how the fan will run. The fan will always be disabled if a fire shutdown or safety chain alarm is active. A valid space temperature and supply air temperature must be available for the fan to operate. There is a unit start delay in effect when the unit is transitioning from unoccupied to occupied. The following describes specific fan operation based on the Fan Mode configuration value.

Auto

When Fan Mode is set to Auto, RTU Open will cycle the fan on and off based on the demand for heating, cooling, and dehumidification. There is a configurable fan off delay that is upheld before shutting the fan off after conditioning has ended.

Continuous

When Fan Mode is set to Continuous, RTU Open will cycle the fan based on occupancy. The fan will run continuously whenever the unit is occupied and operate in the auto mode during the unoccupied period.

Always On

When Fan Mode is set to Always On, RTU Open will run the fan all the time regardless of occupancy or demand.

Fan Off Delay

A Fan Off Delay allows the supply fan to continue operating after heating or cooling stops. If the following alarms are active, the fan turns off immediately, regardless of the occupancy state or demand:

S Fire Shutdown S Safety Chain S Supply Air Temp Sensor alarm

The RTU Open does not include smoke--control functions such as smoke--purge, zone--pressurization, or smoke--ventilation.

Indoor (Supply) Fan Status

The RTU Open has an optional Supply Fan Status input to provide proof of airflow. If this is enabled, the point will look for a contact change whenever the Supply Fan Relay is on. If it is not enabled then it will always be the same state as the Supply Fan Relay. The cooling, economizer, heating, dehumidification, CO routines will use this input point for fan status.

and power exhaust

Cooling

The compressor outputs are controlled by the Cooling Control PID Loop and Cooling Stages Capacity algorithm. They will be used to calculate the desired number of stages needed to satisfy the space by comparing the Space Temperature (SPT) to the Occupied Cool Setpoint plus the T56 slider offset when occupied and the Unoccupied Cool Setpoint (UCSP) plus the T56 slider offset, if unoccupied. The economizer, if available, will be used for cooling in addition to the compressors. The following conditions must be true in order for this algorithm to run:

S Outdoor Air Temperature, if valid, is greater than the

Cooling Lockout Temperature setpoint.

S Indoor Fan is ON. S Heat mode has not been active for 5 minutes. S If occupied and the SPT > (occupied cool setpoint plus

the T56 slider offset).

S Space Temperature and supply air temperature values

are valid.

S If it is unoccupied and the SPT > (unoccupied cool

setpoint plus the T56 slider offset).

S Economizer is unavailable, or if the Economizer is active,

mechanical cooling is available if the economizer is open > 90% for at least 7.5 minutes, the SAT > [Minimum Cooling SAT + 5_F(2.7_C)] and SPT > [Effective Cooling Setpoint + 0.5_F (0.27_C)].

If all of the above conditions are met, the controller uses a PID logic loop to energize or de--energize compressors to satisfy the cooling demand.

There is a fixed 3--minute minimum on time and a 5--minute off time for each compressor output.

Any time the compressors are running the RTU Open will stage down the compressors if the SAT becomes less than the cooling low supply air setpoint. After a compressor is staged off, it may be started again after a normal time--guard period and the supply air temperature has increased above the low supply air setpoint.

S Cooling – Without humidity control [RH Control =

Disable] or an economizer [Economizer Exists = No], the operation of the unit is as follows: If OAT > Cooling Lockout Temperature (45_Fdef)and

SPT > cooling setpoint, then a PID will calculate the required number of compressor cooling stages required to satisfy the present space load conditions. After the minimum compressor off time has expired, then the first compressor stage will be started. The actual number of active compressor stages [Active Compressor Stages] is displayed in the maintenance section.

As the compressor stage(s) operate, the controller monitors the supply air temperature and compares the measured value to the configured supply air temperature setpoint [Stage 1 SAT Stpt if Active Compressor Stages = 1, see the table below].

The fan will begin to operate (or currently be operating) at the configured minimum fan speed [Min VFD Output]. If the measured SAT falls below this setpoint, a PID will calculate the required VFD output to increase the fan speed to obtain the configured Stage “X” SAT Stpt depending on the actual number of the operating stage (1--3). The fan speed can increase as required but not greater than the configured maximum speed [Max VFD Output].

Active Compressor Stages Controlling SAT setpoint

=1 Stage 1 SAT Stpt

=2 Stage 2 SAT Stpt

=3 Stage 3 SAT Stpt

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Supply Fan

The RTU Open supply fan may be configured for 1 of 3 Fan Control modes:

S Single -- The fan operates at one speed only and

provides on/off operation

S Two Speed -- The fan operates at 1 of 2 speeds depending

on the mode of operation and load conditions. During fan only or single stage cooling, the fan operates at low speed. During heating, dehumidification, second stage cooling, or if maximum economizer operation is required, the fan operates at high speed. This control mode is used with 48/50TC(Q), 48/50HC(Q) and size 04--06 48/50LC units when Staged Air Volume (SAV) option is provided.

S Variable Speed -- The fan operates at a variable speed to

meet the load conditions and SAT safety requirements to provide maximum energy savings by minimizing fan horsepower consumption. Fan speed is NOT controlled by static pressure. This setting is default for LC WeatherExpert size 07--26 units and when WeatherExpert

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is selected under Unit Type configuration.

The RTU Open supply fan may be configured for 1 of 3 Fan Modes:

S Auto -- The fan cycles on/off in conjunction with

heating or cooling.

S Continuous -- The fan runs continuously during

occupancy and intermittently during unoccupied periods with heating and cooling.

S Always On -- The fan runs continuously regardless of

occupancy or calls for heating and cooling.

Occupancy can be determined by Linkage, BACnet schedules, BAS schedules, or in response to a remote occupancy switch.

A Fan Off Delay allows the supply fan to continue operating after heating or cooling stops.

If the following alarms are active, the fan turns off immediately, regardless of the occupancy state or demand:

S Fire Shutdown S Safety chain S SAT sensor alarm S SPT sensor alarms

The RTU Open does not include smoke--control functions such as a smoke--purge, zone--pressurization, or smoke--ventilation. Each of these modes require a field--designed circuit to operate the following by local fine codes:

S RTU supply fan S RTU economizer S RTU power exhaust

The RTU Open many be configured to accept a Supply Fan Status input to provide proof the supply fan is operating. When enabled, a loss or lack of fan status will stop heating and cooling operation.

A supply Fan Alarm Service Timer function is available to track the number of supply fan run hours and generate an alarm when the accumulated runtime exceeds the set threshold.

Economizer

The Economizer dampers are used to provide free cooling when the outside conditions are suitable and Indoor Air Quality, if optional CO

The following conditions must be true for economizer operation:

S Indoor Fan is on. S Enthalpy is Low if the Enthalpy input is enabled. S SAT reading is available. S OAT reading is available. S SPT reading is available. S OAT <= High OAT economizer lockout configuration

(default = 75).

S OAT <= SPT

If any of the mentioned conditions are not true, the economizer will be set to its configured minimum position.

If the RTU Open is configured for VFD or 2--speed fan, and the fan is on or at the highest speed, or if the unit is configured for single--speed fan, then the economizer will use the Vent Dmpr Pos/DCV Min Pos setpoint as the minimum economizer position when occupied. If the unit is configured for VFD or 2--speed fan, and the fan is on or at the lowest speed, the economizer will use the Low Fan Econ Min Pos.

NOTE: For LC WeatherExpert units or any unit with Variable Speed fan control, the RTU Open will determine the required minimum economizer position (Calculated Min Econ Pos) based on the fan’s actual operation speed.

The minimum damper position can be overridden by the IAQ routine described later in this section.

If the above conditions are true, the Economizer control will calculate a damper position starting with a minimum vent position and based on current space temperature and a setpoint that is one degree less than the effective cool setpoint. If the SAT drops below the cooling low supply air setpoint (+ 5_F), the economizer will close as required but not to less than the to minimum position. The Calculated Min Econ Pos used for control is displayed in the Maintenance section.

RTU Open provides Fault Diagnostic and Detection (FDD) for economizer operation in compliance with California Title 24. The FDD logic will detect an economizer that fails to close, fails to open, stuck fully open, and fails to fully open. Each condition will cause an Economizer Operation alarm to occur and the specific condition will be displayed.

sensor is installed.

Enthalpy Control

You may use an enthalpy switch to indicate the suitability of outdoor air for economizer cooling. You can use either an outdoor air or differential enthalpy switch. A differential enthalpy switch has a sensing device in both the outdoor and return air streams. A differential enthalpy switch indicates when outside air is more suitable to be used than the return air and is available for economizer cooling. If no enthalpy switch is configured, a network point (Object Name: oae) is available. This point is displayed in the i--Vu application and Equipment Touch as Enthalpy (BACnet).

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The sequence of operation for economizer cooling is the same with or without an enthalpy switch, except that an enthalpy switch imposes one more validation on the suitability of outside air for economizer cooling. An Enthalpy Status that is High disables the economizer and the outside air damper goes to its minimum position. An Enthalpy Status that is Low enables the economizer if a call for cooling exists and the remaining preconditions are met.

Space Air Quality

Space Air Quality (AQ) is controlled on rooftop equipment using the economizer. The Space AQ sequence utilizes an air quality (CO2) sensor to monitor conditions within the occupied space. A CO terminated at the RTU Open, or a subordinate zone controller, when part of a zoned system.

An outdoor air quality sensor may also be installed and terminated at the RTU Open, but is not required. When an outdoor air quality sensor is not installed, the algorithm uses 400ppm as the fixed outdoor air CO

The following conditions must be true for the Space AQ algorithm to operate:

S The system is occupied S The supply fan has been operating for at least 30 seconds S The Space AQ sensor has a valid reading

As the air quality in the space decreases (Space AQ CO2 value increases), the minimum position of the economizer increases, allowing more outdoor air to enter the space. The amount of increase depends on the relationship between the Space AQ level and the DCV Max Ctrl Setpoint.

The Space AQ algorithm calculates a minimum position value using a PID loop. The CO2 minimum damper position is then compared against the Vent Dmpr Pos / DCV Min Pos setpoint and the greatest value becomes the minimum damper position utilized for the economizer. When the minimum economizer position is being reset by the Space AQ algorithm, the System Mode displays IAQ Override.

The maximum amount the economizer may be opened to outdoor air by the Space AQ algorithm is limited by the DCV Max Vent Damper Pos, which is adjustable between 10 and 75%.

sensor may be

level.

Power Exhaust

RTU Open may enable and disable an exhaust fan based on either the controller’s occupancy or its economizer damper position. If configured for continuous occupied operation, it will be energized whenever the controller is in the occupied mode and disabled when in the unoccupied mode. If configured for damper position control, it will be energized whenever the economizer exceeds the power exhaust setpoint and disabled when the economizer drops below the setpoint by a fixed hysteresis of 10%. If the Fan Control is set to Two Speed or Variable Speed, the Power Exhaust Setpoint is automatically adjusted based on the fan’s air delivery. The Calculated PE Setpoint used for control is displayed in the Maintenance section.

Pre--Occupancy Purge

Pre--Occupancy Purge allow the rooftop equipment with an economizer damper to utilize outdoor air to purge the

space of contaminates just prior to the beginning of the occupied period.

The following conditions must be true for pre--occupancy purge to operate:

S Pre--Occupancy Purge set to Enable S Economizer Exists set to Yes S A local time schedule is configured S The local time schedule is currently unoccupied and the

remaining time is less than the configured Purge Time

When the RTU Open schedule is unoccupied and the remaining unoccupied time is less than the purge time, the supply fan starts. The economizer damper opens to the configured Economizer Purge Min Pos. The RTU Open continues to operate in this mode until the occupied start time is reached. The Pre--Occ Purge state is displayed in the Maintenance section.

Heating

The heat outputs are controlled by the Heating Control PID Loop and Heating Stages Capacity algorithm. They will be used to calculate the desired number of stages needed to satisfy the space by comparing the SPT to the Occupied Heat Setpoint the T56 slider offset when occupied and the Unoccupied Heat Setpoint plus the T56 slider offset if unoccupied. The following conditions must be true in order for this algorithm to run:

S Indoor Fan is ON for any unit with electric heat. S Cool mode has not been active for 5 minutes. S If occupied and SPT <(occupied heat setpoint plus T56

slider offset)

S SPT and supply air temperature values are available S If it is unoccupied and the SPT < (unoccupied heat

setpoint plus T56 slider offset).

S OAT < High OAT lockout temperature.

If all of the above conditions are met, the controller uses a PID logic loop to energize or de--energize heat outputs to satisfy the heat demand. If the SAT begins to exceed the high supply air setpoint, a ramping function will cause the Heat Stages Capacity algorithm to decrease the number of stages until the SAT has dropped below the setpoint. There is a fixed one minute minimum on time and a one minute off time for each heat output. There is a 10 minute minimum stage up delay if the heat demand is  3_F,anda2minute minimum stage up delay if heat demand is > 3_F.

Indoor Air Quality

If the optional indoor air quality sensor is installed, the RTU Open will maintain indoor air quality within the space at the user configured differential set point. The set point is the difference between the indoor air quality and an optional outdoor air quality sensor. If the outdoor air quality is not present then a fixed value of 400ppm is used. The following conditions must be true in order for this algorithm to run:

S The mode is occupied. S Indoor Fan is ON. S Indoor Air Quality is a valid reading.

As air quality within the space decreases, the minimum position of the economizer damper will be increased thus

48---50LHTCQ---01T

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allowing more outdoor air into the space depending on the relationship of the indoor air quality to the differential setpoint. If all the above conditions are true, the IAQ algorithm will run and calculates an IAQ minimum position value using a PID loop. The IAQ minimum damper position is then compared against the user configured economizer minimum position and the greatest value becomes the final minimum damper position of the economizer output.

If the IAQ minimum position calculated by the control is greater than the DCV Max Vent Damper Pos configured, then it will be clamped to the configured value.

Dehumidification

The RTU Open will provide occupied and unoccupied dehumidification only on units that are equipped with the Humidi--MiZer requires a space relative humidity sensor or a humidistat for control. The space relative humidity senor can be installed and configured as one of the two analog input channels (inputs 1 or 2 on J4), or a humidistat can be installed and configured as switch input 9 on J5 (except on units configured as LC WeatherExpert with gas heat).

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When using a relative humidity sensor to control dehumidification, occupied or unoccupied dehumidification setpoints are use accordingly. When using a humidistat, setpoints are not used and the dehumidification call comes when the humidistat indicates high humidity.

When the indoor relative humidity becomes greater than the dehumidification setpoint (or switches from low to high), a demand for dehumidification demand is identified. Compressor state is monitored and time guards are honored. If a compressor was just turned off prior to the dehum call the dehumidification output will be delayed the 5 minute minimum off time of the compressor. When ok to dehumidify, the dehumidification output (J11--7, 8) will be energized. This will bring on the supply fan (at high fan speed if Fan Control is set to “Two Speed” or “Variable Speed”), all compressors, and the dehumidification relay placing the unit in Hot Gas Reheat dehumidification mode. If dehumidification is called for during cooling or cooling is called for during dehumidification, the unit will run in Subcooling dehumidification mode. Individual unit circuits can be in different dehumidification modes based on the demand. Refer to the base units operation for additional information.

NOTE: There is a fixed 5% hysteresis that the indoor relative humidity must drop below the active setpoint to end the dehumidification mode and de--energize the dehumidification output. The output will also de--energize if the fan relay is de--energized.

option from the factory. This function

Demand Limit

If the RTU Open receives a level 1 (one degree offset), 2 (two degree offset), or a 3 (4 degree offset) to the BACnet demand limit variable, the controller will outwardly expand the heating and cooling setpoints by the configured demand limit setpoint value and remain in effect until the BACnet demand limit variable receives a 0 value.

Unoccupied Free Cooling

When the unit is equipped with an economizer, the control can run a night time free cooling (NTFC) mode called

Unocc Free Cooling. In this mode the damper is utilized to bring in outdoor air for free cooling during unoccupied periods. The following conditions must be true for unoccupied free cooling to operate:

S Unocc Free Cool Enable set to Enable S The system is unoccupied S The outside air temperature is below the Economizer

High OAT Lockout Temp

S The outside air temperature is less than the space

temperature

S Enthalpy (if enabled) is Low

When the RTU Open schedule is unoccupied and the space temperature rises at least 1 degree above the Occupied Cooling Setpoint, the supply fan starts. The economizer damper opens as necessary to cool the space. The RTU Open continues to operate in this mode until the space is satisfied or the outside air conditions are no longer suitable for free cooling.

Optimal Start

The RTU Open may utilize either of two different optimal start types. Temperature Compensated start is designed specifically for LC units in order to minimize fan operation. Temperature Compensated Start changes the setpoint from the unoccupied setpoint directly to the Occupied setpoints at a calculated time prior to occupancy in order to achieve the occupied setpoint at the scheduled occupied time. Learning Adaptive Start adjusts the effective setpoints to achieve the occupied setpoints by the time scheduled occupancy begins. The Learning Adaptive algorithm works by moving the unoccupied setpoints toward the occupied setpoints. The rate at which the setpoints move is based on the outside air temperature, design temperatures, and capacities. The Optimal Start recovery period may begin as early as 4 hours prior to occupancy. To disable Optimal Start, set the optimal start type to None. The following conditions must be true for optimal start to operate:

S Under SETPOINT, Optimal Start Value must be set

greater than zero

S The Optimal Start type must not be None S The system is unoccupied

S The RTU Open has a valid outside air temperature S The RTU Open is running occupancy based on a local

occupancy schedule, where next time occupied is known.

Fire Shutdown

Fire Shutdown may be configured on Binary Input 5. A typical application involves a smoke detector or fire shutdown contact, which, when active, immediately shuts down equipment operation.

Compressor Safety

Compressor Safety may be configured on Binary Input 3. This feedback can be provided by a Compressor Lock--Out (CLO) device or current switch when field installed. A Compressor Safety Alarm indicates that the equipment requires attention. Cooling, heating, and supply fan outputs are not interrupted. Normal operation resumes when the compressor safety circuit is de--energized.

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Fan Status

Fan Status may be configured on any unused binary input channel. A typical application would be an airflow switch, current sensing relay, or other device that provides a supply fan running verification. Enabling this function displays the supply fan’s status on the equipment graphic. If the controller loses fan status during operation, heating and cooling are disabled, the economizer damper (if available) is closed, and an alarm for loss of status is indicated. If the fan status is on when the controller is commanding the fan off, the unit remains in the off state. An alarm is generated indicating that the fan is running when it should be off.

Filter Status

Filter status may be configured on any unused binary input channel. A typical application is a differential pressure switch that senses the pressure drop across a filter bank. When the pressure across the filter bank exceeds the setpoint of the differential pressure switch, the Filter status is displayed as Dirty on the controller graphic. An alarm indicates a dirty filter.

Door Switch

A Door Contact may be configured on any unused binary input. A typical application is an occupancy sensor mounted within the space served by a single zone rooftop. Door Contact disables mechanical cooling and electric or gas heating, when active. Economizer cooling, if available, continues to operate. A configurable Door Alarm Delay is provided to prevent immediate action. The default is set to 60 seconds.

Remote Occupancy

Remote occupancy may be configured on any unused binary input channel. A typical application is a remote contact, controlled by a third party, or an occupancy sensor to set the controller’s occupied mode. The Remote Occupancy function requires both an input configured for Remote Occupancy, and Occupancy Source set to Remote Occ Input to operate. Once configured, the controller will operate in the occupied or unoccupied mode, as determined by the state of the Remote Occupancy input.

Linkage

The RTU Open may serve as an air source to an Open Variable Volume and Temperature (VVT the RTU Open is part of a VVT system and the controllers are wired together to form a network, the controllers may use a method of communication known as Linkage. Linkage is a method by which an air source and its subordinate zone terminals exchange data to form a coordinated HVAC system. The system’s air source controller, zone controllers, and bypass controller are linked so that their data exchange can be managed by one zone controller configured as the VVT Master. The VVT Master gathers the following information from the slave zone controllers:

S occupancy status S setpoints S zone temperature S relative humidity

level

S CO

S damper position

) system. When

S optimal start data

The VVT Master performs mathematical calculations and algorithms on the data and then sends the composite information to the air source. The VVT Master receives information from the air source such as mode, supply air temperature, and outside air temperature, and passes that information to all linked controllers.

Linkage Air Source Modes

In a linked system, the air source determines its operating mode and qualifies that mode based on its own Supply Air Temperature (SAT). The following modes can be sent by the air source depending on its configuration:

S Off – Air source fan is off S Fan Only – Air source fan is on and providing

ventilation (neutral SAT) without heating or cooling

S Economizer Cooling – Air source fan is on and

providing cooling, using economizer only

S Cooling – Air source fan is on and cooling is provided

by economizer and mechanical cooling

S Heating – Air source fan is on and heating is provided

(gas or electric)

S Dehumidification – Air source fan is on and

Humidi--MiZer

S Test – The RTU Open Service Test mode is active S Shutdown – Air source fan is off due to Safety Chain,

Fire Shutdown, or invalid SAT sensor

S Unocc Free Cooling – Air source fan is on, with the

economizer providing cooling while unoccupied

is active

TROUBLESHOOTING

General

The RTU Open controller acts as an intelligent imbedded thermostat to the rooftop unit, but can be monitored and controlled from i--Vu Open (Linkage) or a 3rd party network. This causes the system as a whole to be troubleshot from three points of view. The three parts to the system are the rooftop unit, the Open controller, and the network connected. Determining which part needs to be troubleshot is the first step.

The Open controller can be used to troubleshoot the rooftop unit and/or itself with service test, communicating LED’s, and built in alarms. Disconnecting the RTU Open from the network may also help troubleshooting the controller and rooftop unit. Third Party Network troubleshooting may also be required. For base unit troubleshooting, refer to specific base unit Service Maintenance manual.

There is an on--board battery that is used for RAM and clock back--up (see Fig. 1). It is a 3--volt lithium battery (CR2032). The average life is 7 years with a minimum of 10,000 hours of back--up. When the RTU Open board is powered up, the battery is not being used. If power is lost, the battery backs up the time clock.

Replacing the RTU Open’s Battery

To determine when to replace the battery, remove and measure the voltage. If the voltage is below 2.9 volts, replace the battery.

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CAUTION

UNIT OPERATION HAZARD

Power must be ON to the RTU Open when replacing the battery or date, time, and trend data will be lost.

1. Remove the battery from the controller, making note of the battery’s polarity.

2. Insert the new battery, matching the battery’s polarity with the polarity indicated on the RTU Open .

Thermistor Troubleshooting

RTU Open uses thermistors to sense temperatures for control operation of the unit. Resistances at various temperatures are listed in Table 2. Thermistor pin connections are shown in Table 1. Thermistors are used for supply air temperature (SAT), outdoor air temperature (OAT), and space temperature (SPT) and all must be a 10 kilo-ohm type II sensor.

To check accuracy, use a high quality digital volt-ohmmeter. Connect the meter to the thermistor leads

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to obtain a resistance value. Use Table 2 to convert that resistance to a temperature. Next step is to measure temperature at probe location with an accurate thermocouple-type temperature-measuring instrument. 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 sensor must be corrected, use the RTU Open’s calibration function to offset the temperature reading.

lines of a Modstat is shown in Fig. 19. The application software version shows the current running software of the board. In this case the rtum2_iv6--3_06_20140403 refers to RTU Open software version 3_06_20140403. The last 8 digits of the number refer to a date (YYYYMMDD). The first 4 digits are the year (2014) and the month and day (0403), so this version is April 3, 2014.

Table 2 – Thermistor Resistance vs Temperature Values

for Space Temperature Sensor, Supply Air Temperature

Sensor, and Outdoor Air Temperature Sensor

TEMP

(C)

--- 4 0 --- 4 0 335,651

--- 3 5 --- 3 1 242,195

--- 3 0 --- 2 2 176,683

--- 2 5 --- 1 3 130,243

--- 2 0 --- 4 96,974

--- 1 5 5 72,895

--- 1 0 14 55,298

--- 5 23 42,315 0 32 32,651 5 41 25,395

10 50 19,903 15 59 15,714 20 68 12,494 25 77 10,000 30 86 8,056 35 95 6,530 40 104 5,325 45 113 4,367 50 122 3,601 55 131 2,985 60 140 2,487 65 149 2,082 70 158 1,752

TEMP

(F)

RESISTANCE

(Ohms)

Software Version

During Start-up and throughout the life of the equipment, it may be necessary to obtain the RTU Open’s software version. To do this a module status (Modstat) must be run on the controller. This can be done from Field Assistant or from an Equipment Touch. An example of the beginning

04/11/2014 12:52:11 CM: 1

Device Instance: 1610551

Application Software Version: PRG:rtum2_iv6-3_06_20140403

Flash Archive Status: Valid on 04/11/14 12:51:12

1 PRGs loaded. 1 PRGs running.

Module status: Firmware sections validated in flash memory

--------------------------------------------

------------------------------------------- Boot16-H_IAR - v2.10:001 Apr 18 2013 RTU-OPEH DRIVER - v6.00:082 Aug 29 2013

Communication LED’s

The LED’s indicate if the controller is speaking to the devices on the network. The LED’s should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the LED’s will appear. See Table 3.

Fig. 19 -- Example Modstat

C14144

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Table 3 – LED’s

The LED’s on the RTU Open show the status of certain functions

If this LED is on... Status is... Power The RTU Open has power Rx The RTU Open is receiving data from the network segment Tx The RTU Open is transmitting data over the network segment BO# The binary output is active

The Run and Error LED’s indicate control module and network status

If Run LED shows... And Error LED shows... Status is...

2 flashes per second Off Normal 2 flashes per second 2 flashes, alternating with Run LED Five minute auto ---restart delay after system error 2 flashes per second 3flashes,thenoff Control module has just been formatted 2 flashes per second 4 flashes, then pause Two or more devices on this network have the same

2 flashes per second On Exec halted after frequent system errors or control pro-

5 flashes per second On Exec start---up aborted, Boot is running 5 flashes per second Off Firmware transfer in progress, Boot is running 7 flashes per second 7 flashes per second, alternating with

Run LED

14 flashes per second 14 flashes per second, alternating with

Run LED

On On Failure. Try the following solutions:

MSTP network address

grams halted

Ten second recovery period after brownout

Brownout

--- Turn the RTU Open off, then on.

--- F o r m a t t h e R T U O p e n .

--- Download memory to the RTU Open.

--- Replace the RTU Open.

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Table4–RTUOpenAlarms

POINT NAME

Safety Chain safety_alarm Immediate Shutdown Automatic Over load Indoor Fan or Electric Heater

Fire Shutdown fire_alarm Immediate Shutdown Automatic Smoke detected by smoke detector or

Gas Valve igc_alarm Immediately operate fan at high-

Supply Fan sfan_fail_alarm Immediately disable

Supply Fan in Hand sfan_hand_alarm Ramp down Operations Automatic Bad Fan Status Switch, Configuration

Compressor Status comp_alarm Alert Generated Automatic Compressor would not start

Space Temp Sensor spt_ fail Ramp down Operations Automatic Bad sensor, bad wiring, failure to receive

ZS Sensor zst_sensor_fail Alert Generated Automatic Th is alarm indicates a communication

ZS Configuration zs_config_fail Alert Generated Automatic This alarm indicates that at least one ZS

Supply Air Temp Sensor loc_sat_sensor_fail Ramp down Operations Automatic Faulty, shorted, or open thermistor

Local OAT Sensor ioc_oat_sensor_fail May cause Economizer and Low

Outdoor Air Temp Sensor oat_fail Economizer and Low ambient D X

Space Relative Humidity Sensor

BACnet Object

NAME

sprh_sensor_fail D ehumidification disabled Automatic Sensor reading is out of range. Bad

ACTION TAKEN BY

CONTROL

est speed

Operation

ambient DX cooling lockout to be disabled

cooling lockout disabled.

RESET METHOD PROBABLE CAUSE

overheat

configuration incorrect

Automatic G as valve stuck open after heating cycle,

Automatic Tripped Circuit Breaker, Broken belt,

Automatic Faulty, shorted, or open thermistor

Automatic Failure to receive va lid local or ne twork

causing heat to continue to operate.

Bad indoor fan motor, Configuration incorrect, Bad fan status switch.

incorrect.

Network or Linkage Space Temp value, or sensor configured incorrec t ly.

failure of a connected ZS sensor that previously had been actively communicating.

sensor is configured in the Sensor Binder properties and is not actually communicating.

caused by wiring error or loose connection.

value for Outdoor Air Temperature

sensor, bad wiring, failure to receive Network or Linkage RH value, or sensor configured incorrectly.

Page 28

Table 4 -- RTU Open Alarms (cont)

POINT NAME

Indoor Air Quality Sensor iaq_sensor_fail No IAQ Operation Automatic Sensor reading is out of range. Bad

Outdoor Air Quality Sensor oaq_fail Control uses default OAQ value of

Economizer Operation econ_opr Alert Generated Automatic This alarm is active whenever an

Space Temperature spt_alrm_status Alert Generated Automatic Space Temperature value is less than

Supply Air Temperature sat_alarm Alert Generated Automatic SAT is greater than the high limit value

Setpoint Slider slidepot_alarm Set Offset to zero Automatic STO sensor is open for more than 5

Switch Configuration di_cfg_alarm Disable only wrong switch

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Analog Input Configuration

Space Relative Humidity sprh_hi_alarm Alert Generated Automatic Indoor RH is greater than the high limit

Indoor Air Quality iaq_alarm Alert Generated Automatic CO2ppm reading is above the

Supply Fan Runtime sfan_rntm_alarm Alert Generated zero the timer Supply fan run time exceeded user

Compressor 1 Runtime comp1_rntm_alarm Alert Gener ated zero the timer Compressor #1 run time limit is exceeded

Compressor 2 Runtime comp2_rntm_alarm Alert Gener ated zero the timer Compressor #2 run time limit is exceeded

Filter filter_alarm Alert Generated Automatic / reset

Airside Linkage Alarm air_linkage_fail Alert Generated Automatic Airside Linkage communication from VVT

BACnet Object

NAME

ai_cfg_alarm Disable 4 selectable analog inputs Configure correctly More than one analog input is

ACTION TAKEN BY

400 ppm.

functions

CONTROL

RESET METHOD PROBABLE CAUSE

sensor, bad wiring, failure to receive Network or Linkage RH value, or sensor configured incorrectly.

Automatic Sensor reading is out of range. Bad

Configure correctly More than one discrete input is configured

timer

sensor, bad wiring, failure to receive Networkvalue,orsensorconfigured incorrectly.

economizer fault is detected as required by the California Title 24 Economizer FDD logic. Economizer fault conditions include; Failed to Fully Open, Failed to Open, Failed to Close, and Stuck Open.

the low limit value or greater than the high limit value

or less than the low l imit value for more than 5 minutes

seconds

to provide the same function.

configured to provide the same function.

value or less than the low limit value for more then 15 minutes

configuration for 1 minute

defined limit

Dirty Filter, supply fan run time exceeded, filter switch configuration wrong.

master terminal has stopped or failed

Page 29

Alarms

Alarms are provided to indicate a possible problem with the controller or unit. Alarms can be checked through a network and/or the local access device. All alarms are listed in Table 4 with name, object name, action taken by control, reset method, and possible cause. Some alarms can occur based on specific configurations.

Safety Chain Alarm

This alarm occurs immediately if a field installed, normally closed, safety contact opens and interrupts 24VAC signal input #4 (J1--9). The Unit Status will be Shutdown and the System Mode will be Disable. All unit operations stop immediately and will not restart until the alarm automatically clears. There are no configurations for this alarm; it is all based on field installed wiring. This alarm will not occur if Fire Shutdown Alarm is active. Normal operation resumes when the safety chain circuit is complete.

Fire/Smoke Shutdown Alarm

This alarm occurs immediately when the smoke detector senses smoke. The Unit Status will be Shutdown and the System Mode will be Disable. All unit operations stop immediately and will not restart until the alarm automatically clears. If there is not a smoke detector installed or the smoke detector did not trip, check input configurations.

NOTE: The default function for input 5 is a normally open Fire Shutdown input.

Gas Valve Alarm

This alarm occurs 60 second after gas heat has been de--energized but the Integrated Gas Control (IGC) board is still indicating a need for fan operation. Upon alarm detection, the fan will start immediately and run at its highest speed.

NOTE: The default function for input 9 is a normally open IGC input for LC WeatherExpert units.

Supply Fan Failure

This alarm occurs when the indoor fan is being command on and the fan status switch feedback is showing the fan off. This will end current operating mode and disable unit operation. This alarm requires a fan status switch to be configured on one of the inputs.

Supply Fan in Hand

This alarm occurs when the indoor fan is being commanded off and the fan status switch feedback is showing the fan is on. This will prevent any operating mode and disable unit operation. This alarm requires a fan status switch to be configured on one of the inputs.

Compressor Status

This alarm indicates the base unit’s compressor safety circuit is energized. Cooling, heating, and supply fan outputs are not interrupted. Normal operation resumes when the compressor safety circuit is de-energized. This alarm requires field use of this described compressor safety circuit.

Space Temp Sensor

This alarm occurs if the space sensor wired to the RTU Open is disconnected or shorted for more than 10 seconds or

if the SPT value from the Network or Airside Linkage is no longer being received. When this occurs the Unit Status will be Shutdown and the System Mode will be Run. Sensor, sensor connections, wiring, board connection, and configurations should be checked for faults or errors. Alarm will reset automatically when cause is fixed.

ZS Sensor

This alarm occurs if the ZS sensor wired to the RTU Open stops communicating with the controller.

ZS Sensor -- This alarm indicates a communication failure of a connected ZS sensor that previously had been actively communicating. The alarm is reset when normal ZS sensor communications resume, if power is cycled to the controller, or if the Shutdown point is set to Active.

ZS Configuration -- This alarm indicates that at least one ZS sensor is configured in the Sensor Binder properties and is not actually communicating. The alarm is reset when the configured ZS sensor is communicating or the configuration is changed to reflect the sensor is no longer connected to the Rnet.

Supply Air Temp Sensor

This alarm occurs immediately when the supply air temperature sensor wired to the RTU Open is disconnected or shorted. When this occurs the Unit Status will be Shutdown and the System Mode will be Run. Sensor, sensor connections, wiring, board connection, and configurations should be checked for faults or errors. Alarm will reset automatically when cause is fixed.

Local OAT Sensor

This alarm occurs when the outdoor air sensor indicates a short or open circuit or the Network OAT value is no longer being received. Economizer cooling and optimal start functions are disabled. Normal operation resumes when the controller detects a valid sensor.

Outdoor Air Temp Sensor

This alarm indicates that a valid OAT sensor value is no longer available to the controller after having been available previously.

Economizer Operation -- This alarm is active whenever an economizer fault is detected as required by California Title 24 Economizer FDD logic. Once detected, this alarm will stay active until the Shutdown input is set to Active or the fan is stopped.

Economizer -- This point indicates the specific fault detected and annunciated by the Economizer Operation alarm above. Detected fault conditions include: Failed to Fully Open, Failed to Open, Failed to Close, and Stuck Open.

Space Relative Humidity Sensor

This alarm indicates the mA input at the associated channel falls below 3.5 mA or rises above 21 mA, or the Network value for space RH is no longer being received. Cooling, heating, and supply fan operation continues, however, the controller’s Humidi-MiZer binary output is disabled until the fault condition is corrected.

IAQ Sensor

This alarm indicates the mA input at the associated channel falls below 3.5 mA or rises above 21 mA, or the Network value for space RH is no longer being received.

48---50LHTCQ---01T

Page 30

Cooling, heating, and supply fan operation continues. However, the controller’s IAQ control function is disabled until the fault condition is corrected.

OAQ Sensor

This alarm indicates the mA input at the associated channel falls below 3.5 mA or rises above 21 mA, or the Network value for space RH is no longer being received. Cooling, heating, and supply fan operation continues. However, the controller’s IAQ control function uses 400ppm as the fixed outdoor air CO2 level until the fault condition is corrected.

Space Temperature

When Occupied, a Space Temperature alarm is generated if the space temperature falls below the lower limit or rises above the upper limit.

When Unoccupied, an unoccupied space temperature alarm is generated when the space temperature falls below the alarm configuration Unoccupied Low SPT Alarm Limit or when the space temperature rises above the alarm configuration Unoccupied High SPT Alarm Limit.

The following values are related to the Space Temperature

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alarm: Alarming Temperature – This variable displays the value

of the space temperature that caused the alarm and is only visible when the space temperature is in an alarm state.

Alarm Limit Exceeded – This variable displays the value of the alarm setpoint that was exceeded by the alarming space temperature and is only visible when the space temperature is in an alarm state.

Supply Air Temperature

This alarm indicates the supply air temperature fell below the alarm configuration Low SAT Alarm Limit or exceeded the alarm configuration High SAT Alarm Limit for 5 minutes. This alarm is inhibited until the RTU has been running for 30 minutes to allow for system stabilization after startup.

Setpoint Slider

This alarm indicates an open circuit is detected at the setpoint adjustment input. This can only occur if the Space Sensor Type is set to T56. Note that only an open circuit results in an alarm. A short across this input offsets the setpoints negatively by the amount configured by configuration Setpoint Adjustment Range.

Switch Configuration

This occurs if more than one binary input (inputs 3, 5, 8, and 9) is configured for the same function. When this happens the two inputs (or more) configured wrong will be disabled as an inputs. This alarm will automatically be cleared when configuration is corrected.

An example of this would be: Input 3 = Compressor Safety, input 5 = Fan Status, input 8 = Fan Status, and input 9 = Humidistat; the alarm would be active, unit would run, compressor safety and humidistat would function normally, and Fan Status (inputs 5 & 8) will be interpreted as “No Function.”

Analog Input Configuration

This occurs if more than one analog input (inputs 1 & 2) is configured for the same sensor. When this happens the

two inputs will be disabled as inputs. This alarm will automatically be cleared when configuration is corrected.

An example of this would be: Input 1 = IAQ Sensor, input 2 = IAQ Sensor; the alarm would be active, unit would run, but the IAQ Sensor (inputs 1 & 2) will be interpreted as “No Function.”

Space Relative Humidity

This alarm indicates the space humidity fell below the alarm configuration Low Space Humidity Alarm Limit or exceeded the alarm configuration High Space Humidity Alarm Limit for 10 minutes. This alarm is inhibited until the RTU runs for 15 minutes to allow for system stabilization after startup.

Indoor Air Quality

This alarm indicates the space CO2level exceeds the alarm configuration Occupied High CO 1-minute. This alarm will be inhibited until the RTU has been running for 2-minutes to allow for system stabilization after startup.

Alarm Limit for

Supply Fan Runtime

This alarm indicates the accumulated runtime exceeds the unit configuration Supply Fan Service Alarm Timer value (when not set to 0). This alarm is most commonly used to indicate an equipment maintenance interval is due. The supply fan runtime accumulator may be reset by setting the maintenance point Reset Supply Fan Runtime Alarm to Clear, and then back to Run – acknowledging each selection by clicking the OK button when it appears. Setting unit configuration Supply Fan Service Timer value to 0 disables the supply fan runtime alarm function.

Compressor 1 Runtime

This alarm indicates the accumulated runtime exceeds the unit configuration Compressor 1 Service Alarm Timer value (when not set to 0). This alarm is most commonly used to indicate an equipment maintenance interval is due. The Compressor 1 Runtime accumulator may be reset by setting the maintenance point Reset Comp 1 Runtime Alarm to Clear, and then back to Run – acknowledging each selection by clicking the OK button when it appears. Setting unit configuration Compressor 1 Service Timer value to 0 disables the Compressor 1 Runtime alarm function.

Compressor 2 Runtime

This alarm indicates the accumulated runtime exceeds the unit configuration Compressor 2 Service Alarm Timer value (when not set to 0). This alarm is most commonly used to indicate an equipment maintenance interval is due. The Compressor 2 runtime accumulator may be reset by setting the maintenance point Reset Comp 2 Runtime Alarm to Clear, and then back to Run – acknowledging each selection by clicking the OK button when it appears. Setting unit configuration Compressor 2 Service Timer value to 0 disables the Compressor 2 runtime alarm function. Note that this function is unavailable if the service configuration Compressor Stages value is not set to Two Stages.

Filter

This alarm indicates the accumulated runtime exceeds the unit configuration Filter Service Alarm Timer value (when not set to 0). This alarm is most commonly used to indicate a filter replacement is due. Reset the filter service

Page 31

runtime accumulator by setting the maintenance point Reset Filter Runtime Alarm to On, back to Off, and clicking the OK button after each setting. Setting unit configuration Filter Service Alarm Timer value to 0 disables the filter service alarm function.

Airside Linkage Alarm

This alarm indicates that RTU Open was connected to a zoned system using Airside Linkage and it lost communications with its linkage master or it is receiving data from multiple masters.

Performance

Current Performance Data

The RTU Open collects performance data during operation. The data can be used to monitor the operation of the unit over time.

Equipment Runtime

The RTU monitors the supply fan and records the amount of time the unit has been operating. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will also automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Economizer Utilization

The amount of time the equipment has operated in the economizer mode as a percentage of the equipment runtime above. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

DCV Utilization

The amount of time the equipment has provided Demand Controlled Ventilation as a percentage of the equipment runtime above. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Unocc Free Cool Utilization

The amount of time the equipment has provided Free Cooling while unoccupied as a percentage of the equipment runtime above. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Part Load Cooling Utilization

The amount of time the equipment has operated in the cooling mode but at less than 100% full cooling capacity as a percentage of the equipment runtime above. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Full Load Cooling Utilization

The amount of time the equipment has operated in the cooling mode at 100% full cooling capacity as a percentage of the equipment runtime above. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will automatically reset

every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Heating Utilization

The amount of time the equipment has operated in the heating mode as a percentage of the equipment runtime above. This value will continue to accumulate runtime until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Recorded High OAT

The highest value of OAT noted since the last reset occurred. This value will continue to update until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable.

Recorded Low OAT

The lowest value of OAT noted since the last reset occurred. This value will continue to update until Performance Data has been changed to Reset or will automatically reset every 24 hours at midnight if Save Performance Data Daily is set to Enable

Performance Data

Indicates the mode that is currently in effect. This point is used to reset all of the above performance data manually at any time.

Range = Collect/Reset Default = Collect

Historical Performance Data

The RTU Open collects historical performance every time the performance data above has been reset.

Save Performance Data Daily

If set to Enable, the control will automatically transfer the Current Performance Data directly to the Historical Performance Data values for each entry once every 24 hours at midnight. All Historical data will only be available for viewing for the next 24 hours. Also, all current performance data will be reset after the data has been transferred.

Range = Disable/Enable Default = Enable

Equipment Runtime

The value of the equipment runtime when the current performance data was last reset.

Economizer Utilization

The value of the Economizer Utilization when the current performance data was last reset.

DCV Utilization

The value of the DCV Utilization when the current performance data was last reset.

Unocc Free Cool Utilization

The value of the Unocc Free Cool Utilization when the current performance data was last reset.

Part Load Cooling Utilization

The value of the Part Load Cooling Utilization when the current performance data was last reset.

Full Load Cooling Utilization

The value of the Full Load Cooling Utilization when the current performance data was last reset.

48---50LHTCQ---01T

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Heating Utilization

The value of the Heating Utilization when the current performance data was last reset.

Previous High OAT

The value of the Recorded High OAT when the current performance data was last reset.

Previous Low OAT

The value of the Recorded Low OAT when the current performance data was last reset.

Table 5 – Manufacture Date

When troubleshooting, you may need to know a control module’s manufacture date.

Obtain the manufacture date from a... Notes

Module status report (modstat) To obtain a modstat with Field Assistant:

Sticker on the control board “Serial No: OR2YMCxxxP” (Bar Coded & Typed Number)

48---50LHTCQ---01T

1. Press Function (FN) key and hold.

2. Then press period (.)

3. Release both buttons. ThereportshowsthedateunderMain board hardware.

The serial numbers are unique and contain embedded information, for example OR2420042P:

“OR2” --- These first three digits are unique to RTU Open and are used as an identifier.

“YM” --- These two digits identify the last digit of the year and month (in hex, A=10/Oct)

of manufacture. “42” would represent a date of manufacture of “Feb 2014”. “C” --- T h o u s a n d s c o u n t e r 0 --- 9 a n d A --- Z ; A = 1 0 ; Z = 3 5 “xxx” --- These three digits represent the sequential number of units produced for a given

product for the mentioned manufacturing time period.

“P” --- This final digit represents the decade and toggles between “N” and “M” every

ten years.

Third Party Networking

Third party communication and networking troubleshooting should be done by or with assistance from the front end 3rd party technician. A Module Status Report (Modstat) can be run from Field Assistant or Equipment Touch (see Table 5 to perform). This lists information about the board status and networking state. For basic troubleshooting, see Table 6. Refer to the RTU Open v3 Integration Guide for additional information.

Table 6 – Basic Protocol Troubleshooting

Problem Possible cause Corrective action

No communication with 3rd party vendor

Incorrect settings on SW1, SW2 and SW3 V erify and correct switch settings. Cycle

RS485 Port has no voltage output

(check with RTU Open disconnected from RS485 communication bus):

•Bacnet

• Bacnet @ 38.4K --- .06 to .09vdc

• Bacnet @ 76.8K --- .1vdc

• Modbus @ 9600 --- 76.8K --- .124vdc

• N2 @ 9600 --- .124vdc

Verify devices are daisy chained and repeaters an d bias terminators are correctly installed.

@ 9600/19.2K --- .01 to .045vdc

powertoRTUOpenafterchangingswitch settings.

Verify RTU Open has correct power supply.

Possible bad driver on board.

Check RS485 bus for external voltage before reconnecting to the bus.

Check 3rd party vendor RS485 communication wiring guidelines and troubleshooting procedures.

Page 33

APPENDIX A -- USER INTERFACE MENUS

Field Assistant Navigation

Properties

Control Program

Status

Configuration

Unit Configuration

Setpoints

Alarm Configuration

Service Configuration

Maintenance

Performance

Alarms

Linkage

48---50LHTCQ---01T

C14143

Page 34

Equipment Touch Menu

RTU Properties Menu> Status

48---50LHTCQ---01T

RTU Properties Menu> Unit Configuration>

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Level

3=ADMIN

2=USER

1=No P W

3, 2, 1 Equi pment Status mode_status 1=Disabl ed

3,2,1 Syst em Mode run_status 1=O ff

3,2,1 S F an Status sf an_status Off/Running N/A

N/A Supply Fan S tatus

3,2,1 Supply F an VFD 3,2,1 Space T emperature - P rime Variabl e space_tem p xxx °F 3,2,1 Supply A ir Temperat ure sa_temp xxx °F 3,2,1 Outdoor A ir Temperat ure oa_temp xxx °F 3,2,1 Space R elative Humi dity space_rh 0- 100 % 3,2,1 Indoor A ir CO2 iaq 0-5000 ppm 3,2,1 Outdoor A ir CO2 oaq 0-5000 ppm 3,2,1 Economi zer Output econ_output 0-100 % open 3,2,1 Shutdow n shutdow n Inactive/Active

3 Fan Mode fan_mode 1=Auto

3 Pow er Fail Res tart Delay start_delay 0-30 sec 5

3 Minimum Cooli ng SAT sat_cl_min 45-75_F 50 3 Maximum Heating SAT sat_ht_max 85-150_F 120 N/A Vent Dm pr Pos / DC V Min Pos econ_min 0-100% Open 20 N/A Economizer P urge Min Pos ec on_purge_min 0-100% O pen 40 N/A LowFanEconMinPos N/A DCV M ax Vent Damper P os iaq_dpr_max 0-75% Open 50 N/A S Fan Service AlarmTimer sfan_service_hrs 0-9999 hr 600 N/A

N/A 3 Supply F an Service Al arm Timer sf an_service_hrs 0-9999 hr 600

N/A Comp 1 S ervice Alarm T imer comp1_servic e_hrs 0-9999 hr 0 N/A Comp 2 S ervice Alarm T imer comp2_servic e_hrs 0-9999 hr 0 3 Filter ServiceAlarm Timer filter _service_hrs 0-9999 hr 600 N/A Door Al arm Delay door_al arm_delay 0-180 sec 60 3 Pushbut ton Override pb_enabl e Disable/ Enable Enable 3 Set point Adjustment stpt_adj_enable Di sable/Enable Enable 3 Set point Adjustment Range stpt_adj_r ange +/-0-5_F 5 3 Cool ing Lockout Temperat ure oat _cl_lockout 0-80_F 45 3 Economi zer High OA T Lockout Temp oat_ec_lock out 55-80_F 75 N/A HP Rev C ycle Lockout Temp N/A HP Aux Heat Lockout T emp 3 Heat ing Lockout Temperat ure oat_ht _lockout 35-150_F 65 N/A Pre Occupanc y Purge preocc _purge Disabl e/Enable Disable 3 Purge Time purge_t ime 0-240 mi n 60 min 3 Unocc F ree Cool ntfc_ena Disable/E nable Disable N/A Min Set point Separati on min_stpt_sep 2-10_F 5 N/A Occupancy Sour ce occ_source 1=A lways Occupied

= This point is only visible when Input 3, 5, 8, or 9 i s confi gured for Fan Status

= This point will be hidden f rom vi ew if U ni t Type is configured for LC WeatherExpert

= This point is only visible when Fan Control is configured for Variable Speed

= This point is only visible when Fan Control is configured for Two Speed

= This point is only visible when Uni t Type is configured for HP O/B Ctrl or HP Y 1/W1 Ctrl

POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu

Fan / S peed

Fan OffDelay fan_delay_off 0-180 sec 90

STATUS

2=Test 3=Run

2=Fan Onl y 3=Economizer Cooling 4=Cooling 5=Heating 6=Dehumidi fication 7=Test 8=Shutdown 9=Unocc F ree Cooling 10=Fire S hutdown 11=IAQ Ov erride 12=Pre-occ P urge 13=IGC Over ride

sfan_status Off/Running fan_run 1=Off

2=Low 3=Med 4=High 5=On

vfd_output 0-100 %

UNIT CONFIGURATION

2=Continuous 3=Always On

econ_min_2 0-100% Open 33

hp_rev_cycle_lockout -20- 65_F -3 oat_auxht_lockout -20-65_F 40

2=BACnet Schedule 3=BAS on/ off 4=Remote O cc Input

Properties>Control Program >Status

Continuous Properties>Control Program>

Configuration> Unit Configuration

Always O ccupied

Page 35

Equipment Touch Menu

RTU Properties Menu> Startu p Wizard

Field A ssistant Only

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Level

3=ADMIN

2=USER

1=No P W

3 Input 1 Functi on ai1_funct ion 1=No Sensor

3 Input 2 Functi on ai2_funct ion 1=No Sensor

3 Input 3 Functi on di3_funct ion 1=No Funct ion

N/A Input 3 Sw itch Configur ation di3_t ype N/O

3 Input 5 Functi on di5_funct ion 1=No Funct ion

3 Input 5 Swit ch Configurati on di5_type N/O

3 Input 8 Functi on di8_funct ion 1=No Funct ion

3 Input 8 Swit ch Configurati on di8_type N/O

3 Input 9 Functi on di9_funct ion 1=No Funct ion

3 Input 9 Swit ch Configurati on di9_type N/O

N/A ZS S ensor Binder zs_bi nder Rnet/ Unused Rnet N/A ZS ZoneTemp zs_zone_temp Zone Temp ( 1-5) Mai n ZS Sensor N/A ZS Z one Humidity zs_zone_humidit y Zone Hum idity (1-5) Mai n ZS Sensor N/A ZS ZoneCO2 zs_zone_co2 Z one CO2 (1-5) Main Z S Sensor

POINT NAME BACnet Object RANGE DEFAULT Fi eld Assistant Menu

INPUT CONFIGURATION

2=IAO S ensor 3=OAQ S ensor 4=Space RH Sensor

2=Compressor S afety 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact

N/C

2=Fire S hutdown 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact

N/C

2=Enthalpy S witch 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact

N/C

2=Humidi stat 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact 7=IGC Over ride

Space sensor t ype spt_type 1=T55

SENSOR CALIBRATION

Space Tem perature l cl_space_temp Space Tem p Calibration spt_offset - 9.9-10°F 0 Space RH lcl_space_rh 0-100% Space AQ lcl_space_aq 0- 5000ppm Supply A ir Temperatur e lcl_sa_tem p -56-245°F Supply A ir Temp Cal ibration sat_offset -9. 9-10°F 0 Outdoor A ir Temperatur e lc_oa_temp -56-245°F Outdoor A ir Temp Cal ibration oat_of fset -9.9-10°F 0

N/C

2=T56 (use f or T59) 3=SPT S ensor 4=None 5=ZS S ensor

IAQ S ensor Properties>Control Program>

No Sensor

Compressor S afety

N/O

Fire S hutdown

N/C

Enthalpy S witch

N/O

Humidis tat IGC O verride (48 Ser ies LC WeatherExpert units)

N/O

None

Configuration> Unit Configuration> Input Configuration

Properties>Control Program> Configuration> Unit Configuration> Sensor Calibration

48---50LHTCQ---01T

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Equipment Touch Menu

RTU Properties Menu> Unit Configuration>

RTU Properties Menu> Alarm Configuration>

48---50LHTCQ---01T

RTU Properties Menu> Alarm Configuration>

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Level

3=ADMIN

2=USER

1=No P W

3 Occupi ed Heating Set point occupied_heat _setpoint 40-90 °F 70 Properties>Control Program>

3 Occupi ed Cooling Set point oc cupied_cool_setpoint 55- 99 °F 76 3 Unoccupi ed Heating Set point unoccupied_heat_s etpoint 40-90 °F 55 3 Unoccupi ed Cooling Set point unoccupi ed_cool_setpoint 45-99 °F 90 N/A Effect ive Heat Set point eff ective_heat_setpoint 0-120 °F N/A Effect ive Cool Set point ef fective_cool_setpoi nt 0-120 °F 3 Optimal Start opt m_start 0-4 hr 1 3 Optimal Start Type start_type 1=N one

3 Heat S tart K f actor (min/deg) h_kf actor 0- 99 15 3 Cool Start K factor ( min/deg) c_kfactor 0-99 15 3 Occ Rel ative Humidi ty Setpoint occ_dehum_stpt 0-unocc setpoi nt %rh 60 3 Unocc R elative Humidi ty Setpoint unocc _dehum_stpt 30- 100 %rh 95 3 DCV Max Ctr l Setpoint iaq_stpt _max 0-9999 ppm 650 3 Pow er Exhaust Setpoi nt

3 Occupi ed Alarm Hyst eresis occ_spt_alrm_hyst 0-20°F 5

N/A Alarm D elay (min/deg) spt _alrm_delay 0-60 mi nutes 10 3 Unoccupi ed Low SPT A larm Limit uno_spt_alr m_lo_lmt 35- 90 °F 45 3 Unoccupi ed High SPT Alarm Li mit uno_spt_alr m_hi_lmt 45- 100 °F 95

3 Low SAT Alarm Limit sat_l o_alrm_lim 15- 90 °F 38

3 High SAT Alarm Limit sat _hi_alrm_lim 90-175 °F 160

3 Occupi ed High RH A larm Limit (%RH) sprh_hi_alr m_lim 0- 100%rh 70%rh

3 Al arm Delay (mi n/%RH) sprh_delay 0-30 mi n 5min 3 Unoccupi ed High RH A larm Limit

N/A Low RH A larm Limit (%RH) sprh_lo_alrm_l im 0-100%rh 30%rh

3 Occupi ed High CO2 A larm Limit (ppm) iaq_occ_hi_l mt 0-9999 ppm 1200 Properties>Control Program>

= This point is hidden from view when Continuous Occupied Exhaust is enabled

= This menu is hidden from view when RH Control is set to Disable

=ThismenuishiddenfromviewwhenDCVControlissettoDisable

POINT NAME BACnet Object RANGE DEFAULT Fi eld Assistant Menu

(%RH)

SETPOINT

2=Temp C ompensated 3=Learning A daptive

pexh_stpt 20-90 %O pen 50

SPACE TEMPERATURE ALARM

SUPPLY TEMPERATURE ALARM

SPACE HUMIDITY ALARM

unocc_sprh_lmt 0-100%r h 100%rh

IAQ / VENTILATION ALARM

Temperatur e Compensated

Configuration>Setpoints

Properties>Control Program> Configuration> Alarm Configuration> Space T emperature Al arm

Properties>Control Program> Configuration> Alarm Configuration> Supply TemperatureAlarm

Properties>Control Program> Configuration> Alarm Configuration> Space H umidity A larm

Configuration> Alarm Configuration> IAQ /Ventilation Alarm

Page 37

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Equipment Touch Menu

RTU Properties Menu> Startu p Wizard

= This point is visible when Fan Control is configured for Variable Speed and not LC WeatherExpert

= This point is visible when Unit Type is confi gured for HP O/B Ctrl

= These points are not visible when uni t type is configured for LC WeatherExpert

Level

3=ADMIN

2=USER

1=No P W

3 Unit Type unit_type 1=Heat/C ool

3 Compressor Stages

N/A FaceSplit Coil 3 Economizer Exists econ_exi st No/Yes No (No FIOP)

3 Fan Cont rol

N/A VFD Input vfd_in_type 0- 10Vdc/2-10Vdc 2-10Vdc N/A Max VFD Out put max_vfd_spd 33-100% 100% N/A Min VFD Output min_vfd_spd 15- 100% 40% N/A Dehum Min V FD Output dehum_min_v fd 50-100% 60% 3 Reversi ng Valve Output 3 Heat T ype heat_ty pe Electric/Gas Gas (48 S eries Units)

3 Number of Heat S tages heat_stages 1=1 st age

N/A Continuous Occupi ed Exhaust occ_exh No/Yes No 3 RH Control rh_enable Disable/Enabl e E nable (Units wi th Humidi- MiZerR)

3 DCV Control dcv_enable Disable/E nable Disable N/A Indoor CO2 S ensor Value @ Mi n mA i aq_ref_lo_ppm 0-9999ppm 0 N/A Indoor CO2 S ensor Value @ Max m A iaq_ref_hi _ppm 0-9999ppm 2000 N/A Outdoor CO2 S ensor Value @ Mi n mA oaq_r ef_lo_ppm 0-9999ppm 0 N/A Outdoor CO2 S ensor Value @ Max mA oaq_ref_hi _ppm 0-9999ppm 2000

N/A System Space T emperature system_spt N/A System Space R H system_rh N/A System Space A Q system_i aq N/A System Out door AQ system_oaq N/A System Cool Demand Level cool_dem and_level 0-3 0 N/A System Heat Demand Level heat_demand_level 0-3 0 N/A System Out door Air Tem perature syst em_oat

3 Economizer High OA T Lockout Temp oat_ec_lockout 55-80_F 75

3 Vent D mpr Pos / D CV Min Pos econ_min 0- 100% Open 20

3 Economizer Purge Mi n Pos econ_purge_min 0- 100% Open 40

3 LowFanEconMinPos ec on_min_2 0-100% Open 33

3 DCV Max V ent Damper Pos iaq_dpr_max 0-75% Open 50

3 HP Rev C ycle Lockout Temp hp_rev_cycle_lockout - 20-30_F -3

3 Occupancy S ource occ_source 1=Always Oc cupied

POINT NAME BACnet Object RANGE DEFAULT F ield Assistan t Menu

9, 11

comp_stages 1= One Stage

face_split Yes/No No

fan_type 1=Singl e Speed

rev_vlv_type O out put type/B output type O out put type

SERVICE CONFIGURATION

2=LC Weather Expert 3=HP O /B Ctrl 4=HP Y1/W1 Ctrl

2=Two S tages

2=Two S peed 3=Variabl e Speed

2=2 stages 3=0 stage

2=BACnet Schedule 3=BAS On/Off 4=Remote O cc Input

Heat/Cool (TC/ HC models, and LC sizes 04-06) ) LC WeatherE xpert (LC si zes 07-26) HP Y1/ W1 Cltl ( TCQ and HCQ models)

One Stage ( sizes 04-07, and A08-A12) Two S tages (TC/HC sizes 08-30 and LC sizes 04- 06) Three S tages (LC WeatherE xpert sizes 07-26)

Yes (FIOP) Single S peed (04-07 and A08-12)

Two S peed (units wit h SAV™ option) Variabl e (LC WeatherExper t sizes 07-26)

Electr ic (50 Seri es Units) 0 ( 50 series cooli ng only units)

1 (All TCQs and HCQs,

Low Nox uni ts, single phase gas units, TC04-09 l ow and TC05-07 m ed heat 3 phase gas units)

2 ( TC 04 and 08-09 med,

TC05-09 hi gh heat 3 phase gas units, HC04-09 3 phase gas units and al l 12-20 gas units, i ncluding all LC uni ts)

Disable ( Units w/o H umidi-MiZerR)

Always O ccupied

Properties> Control Program> Configuration> Service Configuration

Equipment T ouch Only

48---50LHTCQ---01T

Page 38

Equipment Touch Menu

RTU Properties Menu> Maintenance (Unit)

48---50LHTCQ---01T

Field A ssistant Only

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Level

3=ADMIN

2=USER

1=No P W

3 O ccupancy Status occ_status Occupi ed/Unoccupied Properties>Control Program

N/A Temp Com pensated Start

3 P re Occupancy Purge purge Inactive/Active N/A Space T emp Sensor spt_status 1= Sensor Failur e

3 E ffective Heat Setpoint effect ive_ht_stpt 0-120° F 3 E ffective Cool Setpoint eff ective_ci_stpt 0-120° F N/A Relat ive Humidit y Source rh_sour ce 1=N/ A

N/A IAQ S ource iaq_source 1=N/A

N/A OAQ S ource oaq_sourc e 1=N/A

N/A Outdoor A ir Temperatur e Source oat_s tatus 1=N /A

N/A System Status N/A Safet y Chain Feedback safety_status Off/Run Enabled N/A Fir e Shutdown St atus firedow n_status Run Enabled/ Shutdown N/A Compress or Safety St atus comp_status Normal/ Trouble N/A Calcul ated Min Econ P os cal _min_econ_pos 0-100% N/A Calcul ated PE Set point cal_pe_st pt 0-100% 3 A ctive Compressor Stages comp_r un 0-2 3 A ctive Heat S tages heat _run 0-2 N/A Enthal py Status enthalpy_st atus High/Low N/A Enthal py BACnet oae H igh/Low N/A Humi distat Input S tatus humstat_st atus High/ Low N/A Fil ter Status filter_status Clean/Dir ty N/A Door Cont act Status door_contact_status Off/On 3 R eset Supply Fan R untime Alarm sfan_r ntm_clr Run/Clear Run N/A Reset C omp 1 Runtime A larm comp1_rnt m_clr Run/Cl ear Run N/A Reset C omp 2 Runtime A larm comp2_rnt m_clr Run/Cl ear Run 3 Reset Filter Runtime Alarm fil ter_rntm_clr Off/On Off

POINT NAME BACnet Object RANGE DEFAULT Fi eld Assistan t Menu

SERVICE TEST

ServiceTest test_enabl e Disable/Enabl e Disable Fan Test fan_test Disabl e/Enable Disable High S peed Fan Test hi_spd_test Disable/E nable Disable Compressor 1 Test comp1_test Di sable/Enable Disabl e Compressor 2 Test comp2_test Di sable/Enable Disabl e Heat 1 T est heat1_test Disabl e/Enable Disabl e Heat 2 T est heat2_test Disabl e/Enable Disabl e Reversing Valve T est rev_vl v_test Disabl e/Enable Disabl e Dehumidif ication Test dehum_test Disable/ Enable Disable Power E xhaust Test pexh_test Di sable/Enable Disabl e Economizer T est econ_t est 0-100 %Open 0 VFD S peed Test vfd_spd_test 0-100% 0

UNIT MAINTENANCE

-Or-

Learning A daptive Start

tcs_status

-Or-

aos_status

Inactive/Active

2=SPT S ensor 3=T55/T 56 4=Networ k 5=Airsi de Linkage 6=Locked Val ue

2=Local 3=Networ k 4=Linkage 5=Locked Val ue 6=Linkage&Local

2=Local 3=Networ k 4=Linkage 5=Locked Val ue

Properties>Control Program> Configuration> Service Configuration>Service Test

Maintenance>Unit

Page 39

Equipment Touch Menu

RTU Properties Menu> Maintenance (Occupancy)

Field A ssistant Only

RTU Properties Menu> Maintenance(Airside Linkage)

RTU Properties Menu> Performance

Field A ssistant Only

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Level

3=ADMIN

2=USER

1=No P W

3 BAS On / Off keypad_ovrde 1=I nactive

3 Pushbutt on Override pb_status Off/Active N/A Occupancy Contact occ_cont act_status Off/On 3 Override Time Remaining ovrde_time 0-240 m in 3 Schedules schedule Unoccupi ed/Occupied

3 Supply F an Runtime sfan_rntm xxxxx hr Properties>Control Program

3, 2, 1 Equipment Runtime equip_rntm xxxxx hr

3, 2, 1 Economi zer Utilization econ_ut il 0-100% 3, 2, 1 DCV Utilization dcy_util 0-100% 3, 2, 1 Unocc Free CoolUtilization ntf c_util 0-100% 3, 2, 1 Part Load C ooling Utilization par tload_cool_util 0- 100% 3, 2, 1 Full Load Cooli ng Utilization cool_ut il 0-100% 3, 2, 1 HeatingUtilization heat_util 0-100% 3, 2, 1 Recorded Hi gh OAT rec_hi _oat -xxx - xxx_F 3, 2, 1 Recorded Low O AT rec_lo_oat -xxx - xxx_F N/A Performance D ata Collect /Reset

POINT NAME BACnet Object RANGE DEFAULT Field A ssistant Menu

OCCUPANCY (MAINTENANCE)

2=Occupied 3=Unoccupied

RUNTIME (MAINTENANCE)

Supply F an Runtime sfan_rntm xxxxx hr Compressor 1 Runti me comp1_r ntm xxxxx hr Compressor 2 Runti me comp2_r ntm xxxxx hr Filt er Runtime filter_r ntm xxxxx hr

AIRSIDE LINKAGE (MAINTENANCE)

CURRENT PERFORMANCE DATA

HISTORICAL PERFORMANCE DATA

Save Per formance Daily s ave_perf_data Disabl e/Enable Disabl e Equipment R untime pre_equip_r ntm xxxxx.x hr Economizer U tilization pre_econ_ut il 0-100% DCV Utilization pre_dcv_util 0-100% UnoccFree Cool Utilization pre_ntfc_uti l 0-100% Part Load C ooling Utilization pr e_pl_cool_util 0-100% Full Load C ooling Utilization pre_cool_uti l 0-100% Heating Utilization pre_heat_util 0- 100% Recorded Hi gh OAT pre_hi _oat -xxx - xxx_F Recorded Low O AT pre_lo_oat -xxx - xxx_F

Inactive Properties>Control Program

Maintenance>Occupancy

Properties>Control Program Maintenance>Runtime

Linkag e>Airside L inkage

Properties>Control Program> Perfor mance>Current Performance Data

Properties>Control Program> Perfor mance>Histori cal Performance Data

48---50LHTCQ---01T

Page 40

Equipment Touch Menu

RTU Properties Menu> Alarms

48---50LHTCQ---01T

RTU Properties Menu> Maintenanc e ( Airside Linkage)

APPENDIX A -- USER INTERFACE MENUS (CON’T)

Access

Level

3=ADMIN

2=USER

1=No PW

3, 2, 1 Safety Chain safe ty_alar m Normal/Alarm Propert ies>Control Program>

3, 2, 1 Space Temperatur e Alar m Status spt_ alrm_ status Normal/Alarm

3, 2, 1 ZS Temp Sensor N/A

3, 2, 1 ZS Sensor Configuration N/A

3, 2, 1 Space Temp Sensor sp t_fail Normal/Alarm

3, 2, 1 Supply Air Temperature sat_ alarm Normal/Alarm

3, 2, 1 Supply Air Temp Sensor loc_sat_sensor _fail Normal/Alarm

N/A Supply Fan Failure sfan_fail _alarm Normal/Alarm

3, 2, 1 Supply Fan in Hand sfan_hand _alarm Normal/Alarm

3, 2, 1 Supply Fan Runtime N/A

3, 2, 1 Indoor Air Quali ty iaq_ alarm Normal/Alarm

3, 2, 1 Indoor Air Quali ty Sensor iaq_sensor_alarm Normal/Alarm

3, 2, 1 Space Relative Humid ity sp rh_hi _alarm Normal/Alarm

3, 2, 1 Space Relative Humid ity Sensor sprh_ sensor_ fail Normal/Alarm

3, 2, 1 Filter filter_ alarm Clean/ Dirty

3, 2, 1 Local OAT Se nsor loc_oat_sensor _fail Normal/Alarm

3, 2, 1 Econom izer Op eration econ_opr Normal/Alarm

3, 2, 1 Switch Configuration di_cfg_alarm Normal/Alarm

3, 2, 1 Analog I nput Config uration ai_cfg_alarm Normal/Alarm

3, 2, 1 Supply Fan Runtime sfan _rntm _alarm Normal/Alarm

3, 2, 1 Compr essor 1 Run time comp1_rntm_alarm Normal/Alarm

3, 2, 1 Compr essor 2 Run time Comp2_rntm_alarm Normal/Alarm

3, 2, 1 Airside Linkage Alarm air_l inkage _fail Normal/Alarm

N/A Linkage Colle ctor link_collector Properties>Control Program

3 Airside Linkage Status a_link_status Not Active/Active

N/A Air Source Mod e link_ahu_mode 1=Off

N/A Air Source Supply Air Temp link_sat xxx_F

N/A Air Source O utdoor Air T emp link_ahu_oat xxx_F

N/A Num ber of Pr ovider s link_collector/4602 xx

N/A Occ upancy S tatus link_occ Unoccupied/Occupie d

N/A Space Temperature link_stp xxx_F

N/A Occupied Cooling Setpoint link_occ_ cl_stpt 55---80_F

N/A Occupied Heating Setpoint link_occ_Ht_stpt 55---80_F

N/A Unoccup ied Cooling Setpoint link_unocc_cl_stpt 75 ---130_F

N/A Unoccupied Heating Setpoint link_unocc_ht_stpt 55 ---85_F

N/A Indoor Air CO2 (ppm) link_iaq xxx p p m

N/A Space Relative Hum idity lin k_sprh xxx%

N/A Link age Max Dam per Position link_max_dmpr 0 ---100%

N/A Link age Op timal Star t a_link_opt_start Inactive/Active

POINT NA ME BACnet Object RANGE DEFAULT Field Assistant Menu

ALARMS

Alarms

AIRSIDE LINKAGE

Maintenanc e>Airside Linkage

2=Warmup 3=Heating 4=Cooling 5=Freecool 6=Pressu re 7=EVAC 8=Vent

If “Airside Link age Statu s is “ Active”, the following ar e shown as ap plicabl e:

Page 41

APPENDIX B -- THIRD PARTY POINTS LIST

RTU Open Protocol Maps

Point Name

SPT Sensor Read O nly °F input_1 Read O nly no uni ts ai_1 AI:1001 Input R egister (Fl oat) 21 AI 2 Select input_2 Read O nly no uni ts ai_2 AI:1002 Input R egister (Fl oat) 23 AI 3 Select input_6 Read O nly °F ai _6 AI:1006 Input R egister (Fl oat) 5 AI 7 Select input_7 Read O nly °F ai _7 AI:1007 Input R egister (Fl oat) 25 AI 4 Select input_10 Read Onl y °F ai_10 AI: 1010 Input Register ( Float) 27 AI 5 Select input_11 Read Onl y other ai_11 AI:1011 Input R egister (Fl oat) 29 AI 6 Select slidepot vol tage reading Read O nly no uni ts slidepot_v olts A I:1012 Input Register (Float) 7 AI 8 Select Active C ompressor Stages Read Onl y no uni ts comp_run AV :2020 I nput Register ( Float) 31 ADF 10 S NVT_count_inc(9) nvoCmpStages Active H eat Stages Read Only no uni ts heat_run AV:2003 Input Register ( Float) 33 ADF 11 S NVT_count_inc(9) nv oHtStgs Air S ource Outdoor Ai r Temp Read Only °F link_ahu_oat AV:2609 I nput Register ( Float) 11 ADF 2 Select Air S ource Supply Ai r Temp Read Only °F link_sat A V:2608 Input Regis ter (Float) 13 ADF 3 Select Compressor 1 Runti me Read Onl y hr comp1_r ntm A V:2017 I nput Register ( Float) 35 ADF 12 Select Compressor 1ServiceAlarm Timer R/W hr comp1_serv ice_hrs AV:83006 Holding Regi ster (Float ) 37 ADF 13 Select Compressor 2 Runti me Read Onl y hr comp2_r ntm A V:2018 I nput Register ( Float) 39 ADF 14 Select Compressor 2ServiceAlarm Timer R/W hr comp2_serv ice_hrs AV:83007 Holding Regi ster (Float ) 41 ADF 15 Select Cooling Lockout Temperatur e R/W °F oat_cl_l ockout AV :9002 H olding Register ( Float) 43 ADF 16 S NVT_temp_p(105) nviClLckTemp DCV M ax Ctrl Set point R/W ppm iaq_st pt_max AV: 3013 Hol ding Register ( Float) 45 ADF 17 SNV T_ppm(29) DCV M ax Vent Damper P os R/W %Open iaq_dpr_m ax AV:9011 H olding Register (Float) 47 ADF 18 SN VT_lev_percent(81) nvi DCVMaxPos Dehum Mi n VFD Output R/W % dehum_min_vfd A V:3028 Select.. Select.. Select Economizer H igh OAT Lockout Temp R/W °F oat_ec_loc kout AV:9008 Holding R egister (Fl oat) 49 ADF 19 Select Economizer O utput Read O nly %Open econ_output A V:2022 Input Regist er (Float) 51 ADF 20 SNVT _lev_percent(81) nvoEconOut Economizer P urge Min Pos R/W %Open econ_purge_m in AV:9029 Hol ding Register (F loat) 75 ADF 5 S NVT_lev_percent( 81) nvoEcnPr gMin Economizer T est R/W %Open econ_t est AV:81001 Holding R egister (Fl oat) 53 ADF 21 Select Effect ive Cool Set point Read Only °F eff_cl_stpt AV:3005 Input Regi ster (Float ) 55 ADF 22 SNVT _temp_p(105) nvoEffCool SP Effect ive Heat Set point Read O nly °F ef f_ht_stpt AV:3006 Input R egister (Fl oat) 57 ADF 23 SNVT _temp_p(105) nvoEffH eatSP Factory T est Analog 1 C ontrol R/W % ao1_fac_test AV :91001 Hol ding Register ( Float) 59 ADF 24 Select Factory T est Analog 2 C ontrol R/W V ao2_fac_t est AV: 91002 Holdi ng Register (F loat) 61 ADF 25 Select Fan OffDelay R/W seconds fan_del ay_off AV:9024 H olding Register (Float) 63 ADF 26 Select Filt er Runtime Read Only hr filt er_rntm AV: 2015 Input R egister (Fl oat) 65 ADF 27 Select Filter Service Alarm Timer R/W hr fi lter_service_hrs A V:2019 H olding Register (Float ) 67 ADF 28 SNVT _count_inc(9) nviFltAlmTm Heating Lockout Temperatur e R/W °F oat_ht_lockout AV:9003 Hol ding Register ( Float) 69 ADF 29 S NVT_temp_p(105) nviH tLckTmp HP Aux Heat Lockout T emp R/W °F oat_auxht_lockout AV: 3025 Select.. Select.. Select HP Rev C ycle Lockout Temp R/W °F hp_rev_cycle_lockout A V:9004 Holding Regi ster (Float ) 71 ADF 30 SNVT _temp_p(105) nviHPRvClLk Indoor Ai r Quality C O2 (ppm) R ead Only ppm iaq AV:1009 Input Regi ster (Float ) 73 ADF 31 S NVT_ppm(29) nvoIAQ Linkage Max Dam per Position Read Only % link_max_dmpr AV:2611 Input Register ( Float) 77 ADF 6 Select LowFanEconMinPos R/W %Open econ_mi n_2 AV:9030 H olding Register (Float) 89 ADF 32 SN VT_lev_percent(81) nvi LwFnEcnMn Max VF D Output R/W % max_vfd_spd A V:3026 Select.. Select.. Select Maximum Heating SAT R/W °F sat_ht_max AV :83004 Hol ding Register ( Float) 79 ADF 34 Select Min VF D Output R/W % min_vfd_spd A V:3027 Select.. Select.. Select Minimum Cooling SAT R/W °F sat_cl_mi n AV :83003 Hol ding Register (F loat) 81 ADF 35 Select Occ Rel ative Humidit y Setpoint R/W %rh occ_dehum_stpt AV:3011 H olding Register (Float) 83 ADF 36 SN VT_lev_percent(81) nviOcRHSP Optimal Start R/W hr optm_star t AV:9026 H olding Register (Float ) 147 ADF 61 S NVT_count_inc(9) nviOptmSt art Outdoor A ir Qualit y CO2 (ppm) Read O nly ppm oaq A V:1012 Input Regist er (Float) 85 ADF 37 SNVT _ppm(29) nvoO AQ Outdoor A ir Temperatur e Read Onl y °F oa_temp A V:1003 Input Regist er (Float) 87 ADF 38 SNVT _temp_p(105) nvoOAT Override T ime Remaining Read Only min ovrde_time AV:2016 Input Register ( Float) 93 ADF 41 S NVT_count_inc(9) nv oOvrTmRem Password P rotected Output V ariable R/W no uni ts ppo AV:90000 Holding Regi ster (Float) 95 ADF 42 Select Power E xhaust Setpoint R/W %Open pexh_st pt AV :3010 Hol ding Register ( Float) 97 ADF 43 S NVT_lev_percent( 81) nviPw rExhSP Power F ail Restart Delay R/W seconds s tart_delay AV:9007 Hol ding Register ( Float) 127 ADF 58 SNV T_count_inc(9) nvi UntStrDly Setpoint R/W °F occ_cl_stpt AV:3001 H olding Register ( Float) 9 ADF 4 SNV T_temp_p(105) nviOccC oolSP Setpoint R/W °F occ_ht_stpt AV:3002 Hol ding Register (F loat) 19 ADF 9 S NVT_temp_p(105) nvi OccHeatSP Setpoint R/W °F unocc_cl_stpt AV :3003 Hol ding Register ( Float) 15 ADF 7 SNVT_temp_p( 105) nv iUnoccClSP Setpoint R/W °F unocc_ht_stpt AV: 3004 Hol ding Register ( Float) 17 ADF 8 SNV T_temp_p(105) nviUnocc HtSP Setpoint Adjustment R ead Only °F stpt_adj A V:1006 Input Regist er (Float) 99 ADF 44 SNVT _temp_p(105) nvoSPAdjust Setpoint Adjustment Range R/W °^F stpt_adj_range AV: 9015 Hol ding Register ( Float) 101 ADF 45 SNV T_count_inc(9) nviSPAdjRng Space Rel ative Humidit y Read Onl y %rh space_rh AV:1011 I nput Register ( Float) 103 ADF 46 SNVT_l ev_percent(81) nvoSpaceRH Space Tem perature - Pri me Variable Read Only °F space_temp AV:2007 I nput Register ( Float) 107 ADF 48 SNVT_t emp_p(105) nvoSpaceTemp Space Tem perature Offset P ot Read Only °F stpt_adj_offset AV: 91006 Input R egister (Fl oat) 105 ADF 47 Select

Point

Access

Units

BACnet Info Modbus Info N2 Info LonWorksInfo

BACnet

Point Name

zone_temp_zone_temp

BACnet

Object I D

Modbus Register Type

AI:1 Select.. Select.. Select

Modbus

N2 Network

Point Type

N2 Network

Point

Address

SNVT Type SNVT Name

nviDCVMaxPPM

48---50LHTCQ---01T

Page 42

APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)

RTU Open Protocol Maps

Point Name

SPT Sensor Read O nly min zone_temp_over-

Stage 1SAT Stpt R/W °F stg_1_sat AV:83008 Input R egister (Fl oat) 161 ADF 66 Select Stage 2SAT Stpt R/W °F stg_2_sat AV:83009 Input R egister (Fl oat) 157 ADF 64 Select Stage 3SAT Stpt R/W °F stg_3_sat AV:83010 Input R egister (Fl oat) 159 ADF 65 Select Supply A ir Temperatur e R ead Only °F sa_temp AV: 1008 Input Register ( Float) 109 ADF 49 SNVT_t emp_p(105) nvoSAT Supply F an Runtime Read Onl y hr sf an_rntm A V:2014 Input Regis ter (Float) 111 ADF 50 Select Supply F an Service Al arm Timer R/W hr sfan_ser vice_hrs AV: 83005 Holdi ng Register (F loat) 113 ADF 51 Select Supply F an VFD Read Onl y % vfd_out put A V:2027 Input Regi ster (Float) 91 ADF 33 Select System C ooling Demand Level Read O nly no uni ts cool_demand_level AV :9006 I nput Register (F loat) 115 ADF 52 Select System H eating Demand Level Read Onl y no uni ts heat_demand_level A V:9036 Input Regist er (Float) 117 ADF 53 Select System O AT Master R ead Only °F mstr_oa_temp A V:80001 I nput Register (F loat) 121 ADF 55 Select System O utdoor Air T emperature R/W °F syst em_oat A V:1901 Holding Regi ster (Float ) 119 ADF 54 SNVT_t emp_p(105) nviSysOAT System O utdoor AQ R/W no units syst em_oaq A V:1908 Holding Regi ster (Float ) 155 ADF 63 Select System S pace AQ R/W no units system_iaq AV: 1903 Hol ding Register ( Float) 149 ADF 39 SNV T_count_inc(9) nvi SysSpAQ System S pace RH R/W % system_rh AV: 1904 Hol ding Register (F loat) 151 ADF 40 SNV T_lev_percent(81) nviS ysSpRH System S pace Temperature R/W °F system_spt AV :1902 Hol ding Register ( Float) 123 ADF 56 SN VT_temp_p(105) nviS ysSpTmp T5x Over ride Duration R/W hr ovr_dur A V:9023 Holding R egister (Fl oat) 125 ADF 57 Select

48---50LHTCQ---01T

Unocc Rel ative Humidi ty Setpoint R/W %rh unocc_dehum_stpt AV:3012 Holding R egister (Fl oat) 129 ADF 59 SNVT _lev_percent(81) nviUnoccR HSP Vent Dm pr Pos / DC V Min Pos R/W %O pen econ_min A V:9005 H olding Register (Float ) 131 ADF 60 SNVT_l ev_percent(81) nvi DCVMinPos VFD S peed Test R/W % vfd_spd_test AV: 81002 Holdi ng Register (F loat) 153 ADF 62 Select input_3 Read O nly di _3 BI:1003 Di screte Input 1 BI 1 Select input_4 Read O nly di _4 BI:1004 Di screte Input 2 BI 2 Select input_5 Read O nly di _5 BI:1005 Di screte Input 3 BI 3 Select input_8 Read O nly di _8 BI:1008 Di screte Input 4 BI 4 Select input_9 Read O nly di _9 BI:1009 Di screte Input 5 BI 5 Select Airside Linkage Read O nly air_li nkage_fail BV:7030 Di screte Input 26 BI 26 Select Analog I nput Configurati on Read Onl y ai_cf g_alarm B V:7026 Discrete I nput 36 BI 36 Select Compressor 1 Relay State Read Onl y com p_1 BV:2005 Discr ete Input 6 BI 6 Select Compressor 1 Runti me Read Onl y comp1_r ntm_alarm BV :7014 Di screte Input 28 BI 28 Select Compressor 1 Test R/W comp1_test B V:81005 Coil 1 BO 1 Select Compressor 2 Relay State Read Onl y com p_2 BV :2004 D iscrete Input 7 BI 7 Select Compressor 2 Runti me Read Onl y comp2_r ntm_alarm BV :7015 Di screte Input 29 BI 29 Select Compressor 2 Test R/W comp2_test B V:81004 Coil 2 BO 2 Select Compressor S afety Status Read O nly comp_status BV:1008 Di screte Input 8 BI 8 Select Compressor Status Read O nly c omp_alarm BV:7013 D iscrete Input 30 BI 30 SN VT_switch(95) nvoCmpSafet y Continuous Oc cupied Exhaust R/W occ_exh BV :9002 Coil 3 BO 3 Select DCV Control R/W dcv _enable B V:1027 Select.. Select.. Select Dehumidif ication Read Onl y dehum BV :2006 D iscrete Input 9 BI 9 Select Dehumidif ication Test R/W dehum_test BV: 81006 Coil 4 BO 4 Select Door Cont act Status Read Only door_contact_stat us B V:1010 Discrete I nput 10 BI 10 Select Economizer E xists R/W econ_exist BV:99001 Coil 5 BO 5 Select Economizer O peration Read Onl y econ_opr BV: 7054 Select.. Select.. Select Enthalpy ( BACnet) R/W oae BV:1901 Coil 6 BO 6 SNV T_switch(95) nviSysEnt h Enthalpy S tatus Read Onl y ent halpy_status BV:1002 Di screte Input 11 BI 11 Select Factory T est R/W fac_t est_enable B V:91000 Coil 7 BO 7 Select Factory T est Relay 1 C ontrol R/W rel ay1_fac_test B V:91001 Coil 8 BO 8 Select Factory T est Relay 2 C ontrol R/W rel ay2_fac_test B V:91002 Coil 9 BO 9 Select Factory T est Relay 3 C ontrol R/W rel ay3_fac_test B V:91003 Coil 10 BO 10 Select Factory T est Relay 4 C ontrol R/W rel ay4_fac_test B V:91004 Coil 11 BO 11 Select Factory T est Relay 5 C ontrol R/W rel ay5_fac_test B V:91005 Coil 12 BO 12 Select Factory T est Relay 6 C ontrol R/W rel ay6_fac_test B V:91006 Coil 13 BO 13 Select Factory T est Relay 7 C ontrol R/W rel ay7_fac_test B V:91007 Coil 14 BO 14 Select Factory T est Relay 8 C ontrol R/W rel ay8_fac_test B V:91008 Coil 15 BO 15 Select Filter Read Only filter _alarm BV:7017 Discr ete Input 31 BI 31 S NVT_switch( 95) nvoFilter Filt er Status Read O nly filter_status BV: 1004 Di screte Input 12 BI 12 Select Fire / Smoke Shut down Read Onl y fi re_alarm B V:7007 Discrete I nput 32 BI 32 SNV T_switch(95) nvoFrShtdw n Fire S hutdown Status Read Only firedown_status BV: 1005 Di screte Input 13 BI 13 Select Gas Valve Read O nly igc_alarm BV :7050 D iscrete Input 40 BI 40 SNVT _switch(95) nv oGasVlvAlm

Point

Access

Units

BACnet Info Modbus Info N2 Info LonWorksInfo

BACnet

Point Name

ride_ti me_remaining

BACnet

Object I D

Modbus Register Type

AV:1 Select.. Select.. Select

Modbus

N2 Network

Point Type

N2 Network

Point

Address

SNVT Type SNVT Name

Page 43

APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)

RTU Open Protocol Maps

Point Name

Heat 1T est R/W heat 1_test BV :81003 Coil 16 BO 16 Select Heat 2T est R/W heat 2_test BV :81002 Coil 17 BO 17 Select Heat St age 1 Relay St ate Read O nly heat _1 B V:2003 Discrete Input 14 BI 14 Select Heat St age 2 Relay St ate Read O nly heat _2 B V:2002 Discrete Input 15 BI 15 Select Heat T ype R/W heat _type BV:99002 Select.. Select.. Select High S pace Temperature Read Onl y spt _hi_alarm BV:7011 Di screte Input 35 BI 35 SNVT _switch(95) nvoHi SpTemp High S peed Fan Test R/W hi_spd_t est B V:81010 Coil 18 BO 18 Select Humidis tat Input St atus Read Onl y hums tat_status BV:1006 Discr ete Input 16 BI 16 Select IGC Override Read Onl y i gcovr_status BV :1022 D iscrete Input 22 BI 22 Select Indoor Ai r Quality Read Only i aq_alarm BV:7005 D iscrete Input 33 BI 33 SN VT_switch(95) nvoIAQA lm Indoor Ai r Quality S ensor Read Only iaq_sensor_fail BV :7039 Di screte Input 37 BI 37 SNVT _switch(95) nvoI AQSensor Local OA T Sensor R ead Only loc_oat _sensor_fail BV: 7003 Di screte Input 42 BI 42 Select Low Space T emperature Read Only spt_lo_alarm BV:7012 D iscrete Input 39 BI 39 SN VT_switch(95) nvoLoSpTmp Occupancy Cont act Read Only occ_contact_status BV :1007 D iscrete Input 17 BI 17 Select Occupancy St atus Read Only occ_status BV: 2008 Di screte Input 18 BI 18 SNVT _switch(95) nvoO ccStatus Outdoor A ir Qualit y Sensor Read Onl y oaq_f ail BV:7006 D iscrete Input 41 BI 41 SNV T_switch(95) nvoOAQSensor Outdoor A ir Temp Sensor Read Only oat_fail BV :7029 Di screte Input 27 BI 27 Select Power E xhaust Relay S tate Read Only pexh BV:2010 Di screte Input 19 BI 19 Select Power E xhaust Test R/W pexh_test BV: 81008 Coil 19 BO 19 Select Reset Com p 1 Runtime A larm R/W com p1_rntm_clr BV:7514 Coil 20 BO 20 Select Reset Com p 2 Runtime A larm R/W com p2_rntm_clr BV:7575 Coil 21 BO 21 Select Reset F ilter Al arm R/W fi lter_rntm_clr BV:7517 Coil 22 BO 22 SN VT_switch(95) nviRstFilAlm Reset S upply Fan Runti me Alarm R/W sfan_rntm_c lr BV: 7510 Coil 23 BO 23 Select Reversing V alve Output R/W rev_vlv_type BV:1026 Select.. Select.. Select Reversing Valve R elay State R ead Only aux_1 BV :2007 D iscrete Input 20 BI 20 Select RH Control R/W rh_enable BV:1025 Select.. Select.. Select Safety Chain R ead Only safety_al arm BV :7024 D iscrete Input 43 BI 43 SNV T_switch(95) nvoSftyC hain Safety C hain Feedback Read O nly safety_status BV:1009 Di screte Input 21 BI 21 Select Schedule R/W schedule B V:8000 Coil 24 BO 24 Select ServiceTest R/W test _enable BV :81000 Coil 25 BO 25 Select Setpoint Adjustment R/W st pt_adj_enable BV :1013 Coil 26 BO 26 SN VT_switch(95) nviSPAdjEnbl Setpoint Slider Read Only slidepot_alar m BV: 7002 Di screte Input 44 BI 44 Select Shutdown R/W shutdown BV:9001 Coil 27 BO 27 Select Space Rel ative Humidit y Read Onl y spr h_hi_alarm BV: 7018 Di screte Input 34 BI 34 SNVT _switch(95) nvoH iSPRHAlm Space Rel ative Humidit y Sensor Read O nly sprh_sensor_fai l BV: 7022 Dis crete Input 45 BI 45 SNVT_sw itch(95) nvoSpR HSenr Space Tem p Sensor Read Onl y spt_fail BV:7001 Di screte Input 46 BI 46 SNVT _switch(95) nvoSPTmpSen Space Tem perature Alarm S tatus Read Only spt_alrm_status BV:7056 Select.. Select.. Select SPT S ensor R ead Only spt_sensor _fail BV:7032 Disc rete Input 38 BI 38 Select Supply A ir Temp Sensor R ead Only loc_sat _sensor_fail B V:7020 Discrete I nput 51 BI 51 SNV T_switch(95) nvoSATS ensor Supply A ir Temperatur e R ead Only sat_al arm B V:7004 Discrete I nput 47 BI 47 SNVT _switch(95) nvoSATAlm Supply F an Failure Read Onl y sf an_fail_alarm BV:7008 Discr ete Input 48 BI 48 Select Supply F an in Hand Read Only s fan_hand_alarm BV:7009 Discret e Input 49 BI 49 Select Supply F an Relay Stat e Read Onl y sf an BV:2001 Dis crete Input 23 BI 23 SNVT_sw itch(95) nvoSF Alarm Supply F an Runtime Read Onl y sf an_rntm_alarm BV:7010 Dis crete Input 50 BI 50 Select Supply F an Status R ead Only sfan_st atus BV :1003 D iscrete Input 24 BI 24 SN VT_switch(95) nvoFanStat us Swit ch Configuration Read Onl y di_c fg_alarm B V:7025 Discrete I nput 52 BI 52 Select System i s shut down Read Only shutdown_status BV: 2011 Di screte Input 25 BI 25 Select Unocc Fr ee Cool R/W nt fc_ena BV:80001 Coil 28 BO 28 Select ZS S ensor Configurati on Read Onl y zs_conf ig_fail BV:7055 Di screte Input 63 BI 63 SNVT _switch(95) nvoZ sCfgFail ZS T emp Sensor Read Onl y zst_s ensor_fail BV: 7051 Select.. Select.. Select Air S ource Mode Read O nly link_ahu_mode MS V:2005 I nput Register (S igned) 4 ADI 17 Select BAS On / Off R/W keypad_ovr de MSV:1001 H olding Register (Signed) 133 ADI 1 SNVT_count _inc(9) nviBASOnOff Compressor S tages R/W com p_stages MSV: 91003 Select.. Select.. Select Equipment S tatus Read Only mode_status MS V:2001 I nput Register ( Signed) 3 ADI 16 Select Fan / S peed Read O nly f an_run MSV: 2004 Input R egister (Signed) 175 ADI 4 Select Fan Cont rol R/W fan_t ype MSV:9031 Select.. Select.. Select Fan Mode R/W fan_mode M SV:9032 Holding R egister (Si gned) 146 ADI 18 Select

Point

Access

Units

BACnet Info Modbus Info N2 Info LonWorksInfo

BACnet

Point Name

BACnet

Object I D

Modbus Register Type

Modbus

N2 Network

Point Type

N2 Network

Point

Address

SNVT Type SNVT Name

48---50LHTCQ---01T

Page 44

APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)

RTU Open Protocol Maps

Point Name

Input 1 F unction R/W ai1_funct ion MSV: 81001 Holding Regi ster (Signed) 134 ADI 2 Select Input 2 F unction R/W ai2_funct ion MSV: 81002 Holding Regi ster (Signed) 135 ADI 3 Select Input 3 F unction R/W di3_funct ion MSV: 81003 Holding Regi ster (Signed) 136 ADI 21 Select Input 3 Sw itch Configur ation R/W di3_ty pe MSV: 81013 Holding Regi ster (Signed) 137 ADI 5 Select Input 5 F unction R/W di5_funct ion MSV: 81005 Holding Regi ster (Signed) 138 ADI 6 Select Input 5 Sw itch Configur ation R/W di5_ty pe MSV: 81015 Holding Regi ster (Signed) 139 ADI 7 Select Input 8 F unction R/W di8_funct ion MSV: 81008 Holding Regi ster (Signed) 1 ADI 8 Select Input 8 Sw itch Configur ation R/W di8_ty pe MSV: 81018 Holding Regi ster (Signed) 141 ADI 9 Select Input 9 F unction R/W di9_funct ion MSV: 81009 Holding Regi ster (Signed) 142 ADI 10 Select Input 9 Sw itch Configur ation R/W di9_ty pe MSV: 81019 Holding Regi ster (Signed) 143 ADI 11 Select Number Of Heat S tages R/W heat_st ages MSV: 91004 Holding Regi ster (Signed) 149 ADI 19 Select Occupancy Sour ce R/W occ_source M SV:1002 Holding R egister (Si gned) 144 ADI 12 Select Optimal Start Type R/W start_type MSV :2009 Hol ding Register ( Signed) 154 ADI 20 SNVT _count_inc(9) nviOpt StType Space sensor t ype R/W spt_type MSV:9001 H olding Register (Signed) 145 ADI 14 Select Space Tem p Source Read Onl y spt_stat us MSV:2003 Input R egister (Si gned) 2 ADI 15 Select System M ode Read Onl y r un_status MSV:2002 Input Register ( Signed) 1 ADI 13 SNVT _count_inc(9) nvoOpMode Unit Type R/W uni t_type M SV:9018 Select.. Select.. Select

Point

Access

Units

48---50LHTCQ---01T

BACnet Info Modbus Info N2 Info LonWorksInfo

BACnet

Point Name

BACnet

Object I D

Modbus Register Type

Modbus

N2 Network

Point Type

N2 Network

Point

Address

SNVT Type SNVT Name

Page 45

APPENDIX C -- EQUIPMENT TOUCH NAVIGATION SCREENS

Equipment Touch is a touchscreen device with a 4.3 in. Color LCD display that can be connected to the RTU Open controller to view or change its property values, schedule equipment, view trends and alarms, and more, without having to access the Building Automation system’s server.

C14132

Fig. 20 -- Equipment Touch

Home

Displays:

S space temperature S current setpoints S mode S occupancy S OAT, if available

Allows:

S Pushbotton Override S Space Setpoint Offset Adjustment

Tap

on the right to navigate to the Snapshot screen.

Snapshot

C14134

48---50LHTCQ---01T

This appendix provides a brief overview of the screens used to navigate the Equipment Touch. For full details on installation and setup refer to the Equipment Touch Installation and Setup Guide (Catalog No. 11--808--443--01 or later).

NOTE: The System Touch when connected to the RTU Open controller over the BACnet MS/TP network will provide the same screens and function as the Equipment Touch.

Standby

C14133

The Standby screen displays after the Inactivity Timer expires (default is 5 minutes).

Displays:

S space temperature S current setpoints S mode S occupancy S OAT, if available

The Standby screen is not interactive. Touch anywhere on the screen to advance to the Home screen.

C14135

Displays:

S SAT S RH S IAQ S OAQ S OAT, if available

Navigates to:

S Filter Status

S Alarm History

S Schedules

S Trends

S Back to Home -- on the left S Forward to the next screen -- RTU Properties Menu --

on the right

Page 46

RTU Open Properties

Show/Hide Configuration

Navigates to the Property pages. Login with one of the following passwords:

S User level -- type user S Admin level -- type admin

NOTE: Only the buttons that are authorized for a specific password level are visible.

48---50LHTCQ---01T

C14136

C14137

You can configure Show/Hide conditions for values on the following screens:

S Standby S Home S Snapshot

NOTE: Only shown when logged in with the admin password. (See note above.)

Page 47

48---50LHTCQ---01T

Page 48

48---50LHTCQ---01T

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 48 --- 50LHTCQ--- 01T

R e p l a c e s : 4 8 --- 5 0 L C --- 7 --- 2 6 --- 2 T / 4 8 --- 5 0 H C T Q --- 0 2 T

Page 49

RTUOPENSTART--UPSHEET

RTU Model Number: Date:

RTU Serial Number:

Performed by:

RTU Open Software Version: Company:

Protocol and Baud Rate: Network Address:

CONFIGURATION POINTS

POINT NAME BACnet Object RANGE DEFAULT ENTRY

SETPOINT

Occupied H eating Setpoint occupied_heat_setpoint 40-90 °F 70 Occupied C ooling Setpoint occupied_cool_setpoint 55-99 °F 76 Unoccupied H eating Setpoint unoccupied_heat_setpoint 40-90 °F 55 Unoccupied C ooling Setpoint unoccupied_cool_set point 45-99 °F 90 Effect ive Heat Set point effective_heat _setpoint 0-120 ° F Effect ive Cool Set point effecti ve_cool_setpoint 0- 120 °F Optimal Start optm_start 0-4 hr 1 Optimal Start Type start_type 1=None

Heat St art K fact or (min/deg) h_kfactor 0- 99 15 Cool S tart K fact or (min/deg) c_kfactor 0-99 15 Occ Rel ative Humidit y Setpoint occ_dehum_stpt 0-unocc setpoi nt %rh 60 Unocc Rel ative Humidi ty Setpoint unocc_dehum_stpt 30-100 %r h 95 DCV M ax Ctrl Set point iaq_stpt _max 0-9999 ppm 650 Power E xhaust Setpoint

Occupied A larm Hysteresi s occ_spt_alrm_hyst 0-20°F 5 Alarm D elay (min/deg) spt_alrm_del ay 0-60 minutes 10 Unoccupied Low SPT Al arm Limit uno_spt_alrm_l o_lmt 35-90 °F 45 Unoccupied H igh SPT A larm Limit uno_spt_alrm _hi_lmt 45- 100 °F 95

Low SAT Alarm Limit sat _lo_alrm_lim 15-90 °F 38 High SAT AlarmLimit sat_hi_al rm_lim 90-175 ° F 160

Occupied H igh RH Alar m Limit ( %RH) sprh_hi_alrm_lim 0-100%rh 70%rh Alarm D elay (min/%RH ) spr h_delay 0-30 mi n 5min Unoccupied H igh RH Al arm Limit ( %RH) unocc_sprh_lmt 0-100%rh 100%rh Low RH A larm Limit (%RH) sprh_l o_alrm_lim 0-100%rh 30%rh

Occupied H igh CO2 Alar m Limit ( ppm) i aq_occ_hi_lmt 0-9999 ppm 1200

= This point is hidden from view when Continuous Occupied Exhaust is enabled

pexh_stpt 20-90 %O pen 50

2=Temp C ompensated 3=Learning A daptive

SPACE TEMPERATURE ALARM

SUPPLY TEMPERATURE ALARM

SPACE HUMIDITY ALARM

IAQ / VENTILATION ALARM

Temperatur e Compensated

48---50LHTCQ---01T

Page 50

48---50LHTCQ---01T

CONFIGURATION POINTS (CON’T)

POINT NAME BACnet Object RANGE DEFAULT ENTRY

UNIT CONFIGURATION

Fan Mode fan_mode 1=Auto

Power F ail Restart Delay start_del ay 0-30 sec 5 Fan OffDelay fan_delay_of f 0-180 sec 90 Minimum Cooling SAT sat_cl_min 45-75_F 50 Maximum Heating SAT sat_ht_max 85-150_F 120 Vent Dm pr Pos / DC V Min Pos econ_min 0-100% O pen 20 Economizer P urge Min Pos econ_purge_mi n 0-100% Open 40 LowFanEconMinPos DCV M ax Vent Damper P os iaq_dpr _max 0-75% Open 50 S Fan Service AlarmTimer sfan_ser vice_hrs 0-9999 hr 600 Supply F an Service Al arm Timer sfan_servi ce_hrs 0- 9999 hr 600 Comp 1 S ervice Alarm T imer comp1_service_hr s 0-9999 hr 0 Comp 2 S ervice Alarm T imer comp2_service_hr s 0-9999 hr 0 Filter Service Alarm Timer f ilter_service_hr s 0-9999 hr 600 Door Al arm Delay door_alarm_del ay 0-180 sec 60 Pushbutton Over ride pb_enable Disable/ Enable E nable Setpoint Adjustment stpt_adj _enable Disabl e/Enable E nable Setpoint Adjustment Range stpt_adj_range +/-0-5_F 5 Cooling Lockout Temperatur e oat_cl _lockout 0-80_F 45 Economizer H igh OAT Lockout Temp oat_ec _lockout 55-80_F 75 HP Rev C ycle Lockout Temp HP Aux Heat Lockout T emp Heating Lockout Temperatur e oat_ht_lockout 35-150_F 65 Pre Occupanc y Purge preocc_purge Disable/ Enable Di sable Purge Time purge_time 0-240 m in 60 mi n Unocc Fr ee Cool ntfc_ena Disabl e/Enable Disable Min Set point Separati on min_stpt_sep 2-10_F 5 Occupancy Sour ce occ_source 1=Alw ays Occupied

= This point is only visible when Fan Control is configured for Two Speed

= This point is only visible when Uni t Type is configured for HP O/B Ctrl or HP Y 1/W1 Ctrl

econ_min_2 0-100% Open 33

hp_rev_cycle_lockout -20-65_F -3 oat_auxht_lockout - 20-65_F 40

2=Continuous 3=Always On

2=BACnet Schedule 3=BAS on/ off 4=Remote O cc Input

Continuous

Always O ccupied

Page 51

CONFIGURATION POINTS (CON’T)

POINT NAME BACnet Object RANGE DEFAULT ENTRY

Input 1 F unction ai1_funct ion 1=No S ensor

Input 2 F unction ai2_funct ion 1=No S ensor

Input 3 F unction di3_funct ion 1=No F unction

Input 3 Sw itch Configur ation di 3_type N/O

Input 5 F unction di5_funct ion 1=No F unction

Input 5 Sw itch Configur ation di 5_type N/O

Input 8 F unction di8_funct ion 1=No F unction

Input 8 Sw itch Configur ation di 8_type N/O

Input 9 F unction di9_funct ion 1=No F unction

Input 9 Sw itch Configur ation di 9_type N/O

Space sensor t ype spt_type 1=T55

ZS S ensor Binder zs_binder Rnet /Unused Rnet ZS ZoneTemp zs_zone_temp Zone Temp(1-5) Main ZS S ensor ZS Z one Humidity zs_zone_humidi ty Z one Humidity ( 1-5) Main ZS Sensor ZS ZoneCO2 zs_zone_co2 Zone CO2 ( 1-5) Mai n ZS Sensor

Space Tem perature lcl _space_temp Space Tem p Calibration spt_offset -9.9-10°F 0 Space RH lcl_space_rh 0-100% Space AQ lcl_space_aq 0- 5000ppm Supply A ir Temperatur e lcl _sa_temp -56-245° F Supply A ir Temp Cal ibration sat_offset -9.9-10°F 0 Outdoor A ir Temperatur e lc_oa_temp -56-245°F Outdoor A ir Temp Cal ibration oat_of fset -9.9-10°F 0

INPUT CONFIGURATION

2=IAO S ensor 3=OAQ S ensor 4=Space RH Sensor

2=Compressor S afety 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact

N/C

2=Fire S hutdown 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact

N/C

2=Enthalpy S witch 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact

N/C

2=Humidi stat 3=Fan Status 4=Fil ter Status 5=Remote O ccupancy 6=Door C ontact 7=IGC Over ride

N/C

2=T56 (use f or T59) 3=SPT S ensor 4=None 5=ZS S ensor

SENSOR CALIBRATION

IAQ S ensor

No Sensor

Compressor Safety

N/O

Fire S hutdown

N/C

Enthalpy S witch

N/O

Humidis tat IGC Override (48 Series LC WeatherExpert units)

N/O

None

48---50LHTCQ---01T

Page 52

48---50LHTCQ---01T

CONFIGURATION POINTS (CON’T)

POINT NAME BACnet Object RANGE DEFAULT EN TRY

Unit Type unit _type 1=Heat/C ool

Compressor S tages

Face Split Coil Economizer E xists econ_exist No/Yes No (No FIOP)

Fan Cont rol

VFD I nput vfd_in_type 0-10Vdc/ 2-10Vdc 2-10Vdc Max VF D Output max_vf d_spd 33-100% 100% Min VF D Output min_vfd_spd 15- 100% 40% Dehum Mi n VFD Output dehum_m in_vfd 50-100% 60% Reversing V alve Output Heat T ype heat _type Electric/Gas Gas (48 Ser ies Units)

Number of Heat St ages heat_stages 1= 1 stage

Continuous Oc cupied Exhaust occ_exh No/Yes No RH Control rh_enable Disabl e/Enable Enable (U nits with H umidi-MiZerR)

DCV Control dcv_enable Disable/ Enable Disable Indoor CO 2 Sensor Value @ M in mA iaq_ref _lo_ppm 0-9999ppm 0 Indoor CO 2 Sensor Value @ M ax mA i aq_ref_hi_ppm 0- 9999ppm 2000 Outdoor C O2 Sensor Value @ Min mA oaq_ref_lo_ppm 0-9999ppm 0 Outdoor C O2 Sensor Value @ Max mA oaq_ref_hi _ppm 0-9999ppm 2000

System S pace Temperature system_spt System S pace RH system_rh System S pace AQ system_iaq System O utdoor AQ system_oaq System C ool Demand Level cool_demand_level 0-3 0 System H eat Demand Level heat_dem and_level 0-3 0 System O utdoor Air T emperature system_oat

Economizer H igh OAT Lockout Temp oat_ec_lockout 55-80_F 75 Vent Dm pr Pos / DC V Min Pos econ_mi n 0-100% Open 20 Economizer P urge Min Pos econ_purge_min 0-100% Open 40 LowFanEconMinPos econ_mi n_2 0-100% Open 33 DCV M ax Vent Damper P os iaq_dpr_max 0-75% Open 50 HP Rev C ycle Lockout Temp hp_rev_cycle_lockout -20-30_F -3 Occupancy Sour ce occ_source 1=A lways Occupied

ServiceTest test _enable Di sable/Enable Disabl e Fan Test fan_test Disable/ Enable Disable High S peed Fan Test hi_spd_test D isable/Enable Dis able Compressor 1 Test com p1_test D isable/Enable Dis able Compressor 2 Test com p2_test D isable/Enable Dis able Heat 1 T est heat1_test Disable/Enabl e Di sable Heat 2 T est heat2_test Disable/Enabl e Di sable Reversing Valve T est rev_vlv_test Di sable/Enable Dis able Dehumidif ication Test dehum_test Di sable/Enable Disabl e Power E xhaust Test pexh_test Disable/E nable D isable Economizer T est econ_test 0-100 %O pen 0 VFD S peed Test vf d_spd_test 0-100% 0

= This point is visible when Fan Control is configured for Variable Speed and not LC WeatherExpert

= This point is visible when Unit Type is confi gured for HP O/B Ctrl

= These points are not visible when uni t type is configured for LC WeatherExpert

4, 6

comp_stages 1=One S tage

face_split Yes/No No

fan_type 1= Single Speed

rev_vlv_type O output type/B out put type O output ty pe

SERVICE CONFIGURATION

2=LC Weather Expert 3=HP O /B Ctrl 4=HP Y1/W1 Ctrl

2=Two S tages

2=Two S peed 3=Variabl e Speed

2=2 stages 3=0 stage

2=BACnet Schedule 3=BAS On/Off 4=Remote O cc Input

SERVICE TEST

Heat/Cool (TC/ HC models, and LC s izes 04-06)) LC WeatherE xpert (LC si zes 07-26) HP Y1/ W1 Cltl ( TCQ and HCQ models)

One Stage ( sizes 04-07, and A 08-A12) Two S tages (TC/HC sizes 08-30 and LC s izes 04-06) Three S tages (LC WeatherE Xpert sizes 07- 26)

Yes (FIOP) Single S peed (04-07 and A08-12)

Two S peed (units wit h SAV™ option) Variabl e (LC WeatherExper t sizes 07-26)

Electr ic (50 Seri es Units) 0 ( 50 series cooli ng only units)

1 (All TCQs and HCQs,

Low Nox uni ts, single phase gas units, TC04-09 l ow and TC05-07 m ed heat 3 phase gas units)

2 ( TC 04 and 08-09 med,

TC05-09 hi gh heat 3 phase gas units, HC04-09 3 phase gas units and al l 12-20 gas units, i ncluding all LC uni ts)

Disable ( Units w/o H umidi-MiZerR)

Always O ccupied

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 48 --- 50LHTCQ--- 01T

R e p l a c e s : 4 8 --- 5 0 L C --- 7 --- 2 6 --- 2 T / 4 8 --- 5 0 H C T Q --- 0 2 T