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Controls Programming Guide
Direct-Fired Indoor and Outdoor Make-Up
Air Units
DFIA
DFOA
January 2007 MUA-SVP01A-EN
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Overview
A glossary has been provided to assist the reader in understanding distinctive
terms and phrases. These terms and phrases appear in italics.
Trane's Digital Control System, AdaptAire, is designed to give the user the
ultimate in unit performance and operational flexibility, adaptability, and
reliability in a user-friendly package. The AdaptAire DDC system is a standard
component on Trane heating and cooling units. Non-recirculating units,
equipped with the AdaptAire system, do not have return air
capabilities, and all functions related to recirculating units are not
relevant. Where a function is similar but different between recirculating and
non-recirculating units, the function is explained separately.
AdaptAire accepts single or multiple units on the system network. Each unit can
be provided with a local user interface. The operating parameters for individual
units may be input through the local interface. A PC may also be connected to the
network. This allows the user to configure eac h unit separately, or all units can be
configured simultaneously. A controls contractor can provide assistance in
networking.
Operational modes include time scheduling, filter monitoring, and multiple
damper control and temperature control schemes. All of these modes provide
the maximum in unit operational flexibility.
The optional airflow station imparts unparalleled adaptability into the operation
of each unit. A daily self-calibration enables AdaptAire to detect the total air
volume and the exact ratio of outside and return air entering the unit. Then
AdaptAire daily fine-tunes the unit's operation based on these new parameters.
Air volume can vary because of changes in static pressure conditions due to
loading filters, VAV boxes, and building dynamics. These varying conditions
influence the ventilation air provided by the unit. On certain models of
recirculating direct-fired heaters this impacts the allowable equivalent
temperature rise of the unit that is allowed under the latest ANSI standard for
direct-fired heaters.
AdaptAire diagnostic capabilities insure swift response to abnormal unit
conditions. A fault is generated anytime the operational parameters and actual
unit operation are at odds. An indication of trouble is displayed at the local user
interface and system PC in text format. In the Diagnostics section of this manual
is a list of all faults and possible causes and solutions.
All of the features of the AdaptAire system are designed to provide the user with
real time information. At any time the user can display all of th e o per at io n al
parameters, make changes, if necessary, and observe the various temperature,
pressure, and damper readings. The system's diagnostic capa bilit ies provide the
user with up to the minute status reporting. (BACview service module or
WebCTRL internet connection is required for these features.)
© 2005 American Standard Inc. All rights reserved MUA-SVP01A-EN
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NETWORKING
AdaptAire is adaptable to a variety of different network architectures and
protocols. Each controlle r h as built-in pr otocol t ran slation a nd ca n be conf ig ured
for operation on ARCnet156 or EIA-485 communication networks. See Appendix
IV for specific controller specifications.
The AdaptAire system can be connected to most existing building automation
systems. Some systems may require the use of special controllers and network
communication devices. See Appendix I for Device Parameters and Cache Setup
information.
ADAPTAIRE DEFAULT SETTINGS
The following is a list of AdaptAire DDC controller defaults. These are the def ault
operating parameters set at the factory prior to shipment.
Table 1. Default settings
ITEM DEFAULT RANGE
Unit Network Address 002 binary dips 000 – 255 binary dips
Unit Operating Mode OFF OFF – MANUAL - AUTO
Time Clock Schedule None 4 Daily - 12 Holiday - 2
Heating/Cooling Operating
Mode
Damper Operating Mode Manual MANUAL - BUILDING
Fuel Selection Natural Gas NATURAL - PROPANE
Heating Night Setback 55°F 40°F - 80°F
Cooling Night Setback 100°F 75°F - 120°F
Room Temperature Setpoint 65°F 55°F - 90°F
Freezestat 45°F 35°F - 50°F
Outside Air Economizer
Setpoint
Minimum Discharge
Temperature Setpoint
Maximum Discharge
Temperature Setpoint
Mixed Air Temperature
Setpoint
Building Pressure Setpoint 0” W. C. -0.05” - +0.05” W. C.
Manual Damper Position
Setpoint
Minimum Ventilation
Setpoint
User PID Select Direct Acting DIRECT -REVERSE
High Input Value 0 -9999.99 – 99999.99
Override schedules
Heating HEATING - COOLING
PRESS - MIXED AIR
TEMP
65°F 40°F - 80°F
55°F 40°F - 130°F
100°F 55°F - 130°F
50°F 30°F - 90°F
20% Outside Air 0% - 100%
20% Outside Air 0% - 100%
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 3
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Table 1. Default settings (continued)
ITEM DEFAULT RANGE
Low Input Value 0 -9999.99 – 99999.99
User Control Setpoint 0 -9999.99 – 99999.99
Maximum User Setpoint 0 -9999.99 – 99999.99
Minimum User Setpoint 0 -9999.99 – 99999.99
4 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Contents
NETWORKING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ADAPTAIRE DEFAULT SETTINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MDT Controls:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MRT Controls: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MRT-Pro Controls: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MRT-Expert Controls:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Heating/Ventilating/Cooling Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . 12
Heating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Ventilation Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Cooling Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Damper Control Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
100% Outside Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Minimum Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Freezestat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Clogged Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
User Configured PID Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DIRECT ACTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
REVERSE ACTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Unit Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Multiplexed Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Clock Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Critical Fault Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Discharge Temperature26
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Circuit Open29
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Burner Status30
FAULT CODE: Burner Hand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flame Failure32
Diagnostics - Non-Critical Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unit off/Fan on33
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unit on/Fan off34
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check Airflow Switches35
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clogged Filter Switch36
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Energy Save Mode 137
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Energy Save Mode 238
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Energy Save Mode 339
FAULT CODE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Insufficient OA40
Menu Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Menu Selection Tree for BACview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
UNIT MODES HOTKEY - 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
SET POINTS HOTKEY - 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
STATUS MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HOTKEY - 445
MUA-SVP01A-EN 5
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Contents
ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOTKEY - 145
RESETS HOTKEY - 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
SCHEDULES HOTKEY- 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
USER CONFIGURABLE OUTPUT HOTKEY - 8. . . . . . . . . . . . . . . . . . . . . . . . . 46
CLOCKSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOTKEY - 047
HELP HOTKEY - 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
FUEL SELECT HOTKEY - 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Thermostat Output Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10 K Ohms Thermistor Output Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Airflow Station Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
I/O Zone 583 Controller Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6 MUA-SVP01A-EN
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MDT Controls:
Unit Operating Modes
There are three different modes that control the supply fan and unit operation:
•Off
•Manual
•Auto
There are also four different methods for controlling the operating modes:
• "a remote panel with two rotating knob adjustments ( MDT and MRT controls)
• "a remote panel with one rotating knob and an intelligent room sensor (MRTPro controls)
• "an intelligent room sensor and local user interface panel with LCD display
(MRT-
• any of the above controls with a internet-base WebCTRL interface.
MDT, modulating discharge temperature, is the most basic AdaptAire control for
discharge temperature . The MDT control syste m includes a re mote control pan el
equipped with 1 or 2 potentiometers, 3 or more pilot lights, and up to 2 switc hes.
UNIT OFF MODE
Off Mode is the default unit operational mode. To place the unit in the Off Mode,
rotate the "temperature setpoint" knob on the remote control panel
counterclockwise to the stop. This will place the unit in the OFF mode and
extinguish the "unit enable" light. The OFF mode prevents the unit from starting
UNIT MANUAL MODE
Manual Mode allows the unit to turn on. To place the unit in the Manual Mode,
rotate the "temperature setpoint" knob on the remote control panel clockwise to
the desired discharge air temperature setpoint. This will place the unit in the
MANUAL mode and enable the burner. See Heating/Ventilating/Cooling Modes
and Energy Saving Modes of this manual for more information.
UNIT AUTO MODE
Auto Mode has four different funct ions that cont rol the unit o peration. They are a
time clock, heating and cooling night setbacks, and a signa l from an external
source.
The MDT control does not support the time clock, night setback, or auxiliary unit
enable functions.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 7
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MRT Controls:
Unit Operating Modes
MRT, modulating room temperature, is the most basic AdaptAire control for
room temperature. The MRT control system includes a remote control panel
equipped with 1 or 2 potentiometers, 3 or more pilot lights, and up to 2 switc hes.
UNIT OFF MODE
Off Mode is the default unit operational mode. To place the unit in Off Mode
rotate the "temperature setpoint" knob on the remote control panel
counterclockwise to the stop. This will place the unit in the OFF mode and
extinguish the "unit enable" light. The OFF mode prevents the unit from starting.
UNIT MANUAL MODE
Manual Mode allows the unit to turn on To place the unit in Manual Mode rotate
the "temperature setpoint" knob on the remote control panel clockwise to the
desired room temperature setpoint. This will place the unit in the MANUAL
mode. The burner will be enabled if the room air temperature is 2° below the
room temperature setpoint and will be deactivated when the room air
temperature is above the room temperature setpoint. The cooling output will be
enabled if the room air temperature is 2° above the room temperature setpoint
and will be deactivated when the room air temperature is below the room
temperature setpoint.
MRT-Pro Controls:
UNIT AUTO MODE
Auto Mode has four different funct ions that cont rol the unit o peration. They are a
time clock, heating and cooling night setbacks, and a signa l from an external
source.
The MRT control does not support the time clock, night setback, or auxiliary unit
enable functions.
The AdaptAire MRT-Pro, modulating room temperature control, provides some
limited information regarding unit operation on an LCD display and allows the
user to adjust a few basic operational parameters. The MRT-Pro must be placed
in the MANUAL or AUT O mode in the contro ller progr am using a BA Cv iew or PC
in order for it to operate. The Off, Manual, and Auto modes will then function as
described in the following sections.
UNIT OFF MODE
Off Mode is the default unit operational mode. The OFF mode prevents the unit
from starting and overrides the Time Clock and Night Setback functions. A
BACview or PC is required to change from this mode. See the section related to
the MRT Expert for instructions on how to use the BACview for programming.
8 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Unit Operating Modes
UNIT MANUAL MODE
Manual Mode allows the unit to turn on regardless of the Time Clock or Night
Setback functions. A BACview or PC is required to change to this mode. See the
section related to the MRT Expert for instructions on how to use the BACview for
programming.
UNIT AUTO MODE
Auto Mode has four different funct ions that cont rol the unit o peration. They are a
time clock, heating and cooling night setbacks, and a signa l from an external
source. A BACview or PC is required to change to this mode. See the section
related to the MRT Expert for instructions on how to use the BACview for
programming.
Unoccupied/Occupied Control. Once the unit is placed in the Auto Mode, the
unit can be controlled from the keypad on the MRT-Pro room sensor. The MRTPro room sensor display will indicate the unit is in the un-occupied period. To
turn the unit on and place it in the occupied per iod press the " Manual On" b utton
on the face of the MRT-Pro room sensor. Pressing the "Warmer" button can
increase the amount of "on" time. Pressing the "Cooler" button can decrease the
amount of "on" time. Each press decreases the time in 30-minute increments.
Each press increases the time in 30-minute incr ements to a maximum of 9 hours
of "on" time.
To turn the unit off and place it in the un-occupied period press the "Manual On"
button on the face of the MRT-Pro room sensor. The display will indicate the
amount of "on" time remaining. Press the "Cooler" button repeatedly until the
time reaches zero, and the unit shuts off. Each press decreases the time in 30minute increments.
Auto Mode has four different funct ions that cont rol the unit o peration. They are a
time clock, heating and cooling night setbacks, and a signa l from an external
source.
Scheduling Time Clock. This function requires the purchase of a BACview or a
direct PC interface to the unit controller. See the section related to the MRT
Expert for instructions on how to use the BACview for programming.
Heating Night Setback. The Heating Night Setbac k function automatica lly cycles
the unit "on" if the room temperature falls below the Heating Night Setback
temperature setpoint, and the unit is sc heduled to be "off". If t he unit is sc heduled
to be "off" and the Heating Night S etbac k f unction turns the unit "on", the unit will
be cycled "off" once the room air temperature has risen 2° above the Heating
Night Setback setpoint. The default for this setpoint is 55°F and is fixed at 10°
below the Heating setpoint. Changing the Heating setpoint changes the Heating
Night Setback setpoint
Cooling Night Setback. The Cooling Night Setbac k funct ion automatically cycle s
the unit "on" if the room temperature rises above the Cooling Night Setback
temperature setpoint, and the unit is sc heduled to be "off". If t he unit is sc heduled
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Unit Operating Modes
to be "off" and the Cooling Night S etbac k function t urns the unit "on", the unit will
be cycled "off" once the room air temperature has fallen 2° below the Cooling
Night Setback setpoint. The default for this setpoint is 100°F and is fixed at 27°
above the Cooling setpoint. Changing the Cooling setpoint changes the Cooling
Night Setback setpoint.
Auxiliary Unit Enable. The Auxiliary Unit Enable function overrides all other
Auto Mode functions and automatically cycles the unit into operati on. This
function is activated whenever a contact is closed between the appropriate
terminals on the unit's terminal strip located in the unit's main control panel. S ee
the Typical Wiring Schematic and Multiplexed Input sections of this manual for
more information. This function can be used with a twist timer, toggle switch,
door switch, exhaust fan interlock, or any other dry contact to override the time
clock schedule.
MRT-Expert Controls:
The AdaptAire MRT-Expert, modulating room temperature control, provides full
information regarding unit operation and allows the user to adjust all operational
parameters using the include d BACview panel.
UNIT OFF MODE
Off Mode is the default unit operational mode. To place the unit in Off Mode
scroll through the Unit Modes menu tree, locate the AUT O/OFF/MANUAL branch,
and select OFF. This will place the unit in the OFF mode. The OFF mode prevents
the fan and burner from starting. This mode will override the Time Clock and
Night Setback functions.
UNIT MANUAL MODE
Manual Mode allows the supply fan to turn on regardless of the Time Clock or
Night Setback functions. Heating and cooling functions use the Night Setback
Setpoints. To place the unit in Manual Mode scroll through the Unit Modes menu
tree, locate the AUTO/OFF/MANUAL branch, and select MANUAL. This will place
the unit in the MANUAL mode.
UNIT AUTO MODE
Auto Mode has four different functions that control the supply fa n and unit
operation. They are a time clock functi on, heating and cooling night setbacks,
and a signal from an external source to an auxiliary digital input. To place the unit
in Auto Mode scroll through the Unit Modes menu tree, locate the AUTO/OFF/
MAN branch, and select AUTO. This will place the unit in the AUTO mode. This
activates the four Auto mode functions.
Scheduling Time Clock. The primary Auto Mode function is the Time Clock
Schedule. The Time Clock function allows the user to schedule the operational
times of the unit. There are four dif ferent sc hedules ava ilable: 24 hour continuous
operation, daily, holiday, and override. The daily schedule can be programmed
10 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Unit Operating Modes
for up to 4 separate On/Off events with any combination of days. The normal
schedule sets the typical On/Off times for the unit. The holiday schedule can be
programmed for up to 12 separate On/Off events with any combination of days.
The holiday sche dule sets the Of f times for holidays and other shutdo wn periods.
The override schedule can be programmed for up to 2 separate On/Off events
with any combination of days. The ov erride schedule sets the On times that will
override the holiday schedule. This scheduling system allows the user to
program a diverse array of On/Off operations. An example of a typical schedule
would be to have the unit On Monday through Friday from 6:00 AM to 5:00 PM,
except during the weeks of Thanksgiving and Christmas when the units will be
Off. Howeve r they will run eac h weekday during the Thanksgiving shutdown
from 8:00 AM until noon while a maintenance crew is in the building. AdaptAire
has no preset operational schedule.
To set the time clock function for 24 hour continuous ope ration scroll through the
menu tree and locate the SCHEDULES page. Set the 24 Hr Op eration to yes. E nter
the Daily section of the menu and set the Use tab to yes. Finally select the days
for 24 hour operation.
To set the operational times of the unit scroll through the SCHEDULES menu
tree, and locate the desired Daily, Holiday, or Override bra nc h. Enter the days and
times for the unit to operate. In the Daily or Override section these times should
correspond to the desired "on" times for the unit's operation. In the Holiday
section these times should correspond to the desired "off" times for the unit's
operation.
See the CLOCK SET section of this manual for setting the time, date and Daylight
Savings function.
Heating Night Setback. The Heating Night Setbac k function automatica lly cycles
the unit "on" if the room temperature falls below the Heating Night Setback
temperature setpoint, and the unit is sc heduled to be "off". If t he unit is sc heduled
to be "off" and the Heating Night S etbac k f unction turns the unit "on", the unit will
be cycled "off" once the room air temperature has risen 2° above the Heating
Night Setbac k setpoint. The def ault for this setpoint is 55°F. To change the Heating
Night Setback setpoint scroll through the SETPOINTS menu tree, locate the
Heating Night Setback setpoint and enter a new temperature. The allowable
temperature range is 40°F - 80°F.
Cooling Night Setback. The Cooling Night Setbac k funct ion automatically cycle s
the unit "on" if the room temperature rises above the Cooling Night Setback
temperature setpoint and the unit is sc heduled to be "o f f". If the unit is scheduled
to be "off" and the Cooling Night S etbac k function t urns the unit "on", the unit will
be cycled off once the room air temperature has fallen 2° below the Cooling
Night Setback setpoint. This function toggles digital output DO1. The default for
this setpoint is 100°F. T o c hange the Cooling Night Setbac k setpoint scroll through
the SETPOINTS menu tree, locate the Cooling Night S etback setpoint and enter a
new temperature. The allowable temperature range is 75°F - 125°F.
Auxiliary Unit Enable. The Auxiliary Unit Enable function overrides all other
Auto Mode functions and automatically cycles the unit into operati on. This
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Unit Operating Modes
function is activated whenever a contact is closed between the appropriate
terminals on the unit's terminal strip located in the unit's main control panel.
Heating and cooling functions use the Night Setback Setpoints. See the Typical
Wiring Schematic and Multiplexed Input sections of this manual for more
information. This function can be used with a twist timer, toggle switch, door
switch, exhaust fan interlock, or any other dry contact to override the time clock
schedule.
Heating/Ventilating/Cooling Operating Modes
The AdaptAire DDC controller automatically switches between the heating,
ventilating and cooling modes of operation.
Heating Mode
Heating Mode allows the burner to operate as needed a nd is activated when ever
the room temperature is 2° below the heating setpoint.
General Burner Control
In the Heating Mode the burner will modulate to maintain a constant
temperature. To change t he desired heating di sc harge or room temperature of a n
MDT or MRT control system, rotat e the tempe rature set point knob on the remote
panel clockwise to the desired temperature.
To change the desired heating room temperature of an MRT-Pro control system,
depress the Warmer button to increase the desired room temperature setpoin t or
depress the Cooler button to decrease the desired room temperature setpoint.
Each push of a button changes the temperature setpoint by 1°F. The setpoint can
be changed a maximum of ±10°F from the default of 72°F.
To change the desired heating room temperature of an MRT-Expert control
system, scroll through the SETPOINTS menu tree using the BACview, locate the
Occupied Heating Setpoint, and enter a new temperature. The allowable
temperature range is 55°F - 90°F. The burner will modulate using a PID loop to
maintain this temperature.
Additionally, on all controls systems except the MDT the control system
modulates the burner to maintain the suppl y air temperature within a defined
operating window. This window defines the maximum and minimum discharge
temperatures.
To change the desired minimum supply or discharge air temperature scroll
through the SETPOINTS menu tree, locat e the HTG MIN D A S etpoint, and enter a
new temperature. This temperat ure must not be greater than the HTG MAX DA
Setpoint. The allowable temperature range is 40°F - 130°F. This sets the lowest
discharge air temperature that will leave the unit.
To change the desired maximum supply or discharge air temperature scroll
through the SETPOINTS menu tree, locate the HTG MAX DA Setpoint, and enter
a new temperature. This temperature must not be less than the HTG MIN DA
12 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Unit Operating Modes
Setpoint. The allowable temperature range is 55°F - 130°F. This sets the highest
discharge air temperature that will leave the unit.
If the maximum and minimum discharge temperature setpoints are set for the
same temperature, the supply air temperature will be the same as the setpoint
regardless of the room temperature setpoint or actual room temperature.
Recirculating Direct-Fired Heaters. Using different controller software, the
AdaptAire DDC system can accommodate three distinct types of recircu la t in g
direct-fired units: those that return air before the burner and employ a special
airflow station, those that return air before the burner and do not employ a
special airflow station, and those that recirculate air after the burner.
Recirculating direct-fired units, like all direct-fired units, deliver all of their
products of combustion directly to the heated air space. For this reason it is
extremely important that the proper ventilation ra te be maintained to dilute these
emissions.
AdaptAire units, that recirculate air before the burner and employ an airflow
measuring station, utilize a control scheme that measures air pressure to
determine the ratio of outside air and return air. These units are listed by an
independent third party testing agency and use the equivalent temperature rise
control scheme to limit burner modulation. The AdaptAire system accurately
measures the ratio of outside and return air, calculates the allowable equivalent
temperature rise and automatically lim its the burne rs firing rate. This in sures the
products of combustion, delivered to the space by the unit, are held at or below
allowable OSHA thresholds. The outside air percentage is the driving parameter
for this function. A greater percentage of outside air or dilution air enables the
unit to generate a higher allowable equi valent temperature rise.
AdaptAire units that recirculate air before the burner and do not employ an
airflow measuring station utilize a control scheme that measures damper
position to determine the percentage of return air. These units are not listed by
an independent third party te sting a gency but do use the equivalent temperature
rise control scheme to limit burner modulation.
AdaptAire units that recirculate air after the burner are physically constrained to
limit the percentage of return air. These constraints are meant to provide the
proper dilution air . An independent third party testing agency and do not use the
equivalent temperature rise control scheme to limit burner modulation does not
list these units.
In order of lowest to greatest priority the burner modulation parame ters are:
room temperature, discharge or supply air temperature, and equivalent
temperature rise.
There are three Energy Savings modes that could disable the burner.
Energy Savings Mode 1—Mixing Box Recirculating Units. Energy Savings Mode
1 will automatically disable the burner if the mixe d ai r te mperatu re i s e qual t o or
greater than the minimum discharge air temperature setpoint, and the room air
temperature is 5°F above the room air tempe r ature setpoint. This function is
intended to restrain the room temperature from rising uncontrollably in buildings
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 13
Page 14
Unit Operating Modes
with internal heat gain. In certain conditions it may be necessary to readjust the
minimum discharge air or room temperature setpoint upward or adjust the
outside/return air ratio to provide a warmer supply air temperature.
Energy Savings Mode 1—Non-Recirculating Units. Energy Savings Mode 1 will
automatically disable the burner if the outside air temperature is equal to or
greater than the minimum discharge air temperature setpoint, and the room air
temperature is 5°F above the room air tempe r ature setpoint. This function is
intended to restrain the room temperature from rising uncontrollably in buildings
with internal heat gain. In certain conditions it may be necessary to readjust the
minimum discharge air or room temperature setpoint upward or adjust the
outside/return air ratio to provide a warmer supply air temperature.
Energy Savings Mode 2—Mixing Box Recirculating Direct-Fired Units. Energy
Savings Mode 2 will automatically disable the burner if the burner's minimum
firing rate exceeds the allowable equivalent temperature rise. This condition is
unlikely to occur unless the burner's minimum firing rate is misadjusted and set
too high, or the inlet air opening is restricted.
Ventilation Mode
Energy Savings Mode 3. Energy Savings Mode 3 will automatically disable the
burner if the outside air temperature is above the Outside Air Economizer
setpoint. This function is similar to an inle t duct thermo stat. The burn er will cycle
back on if the supply air temperature drops 3°F be low the Outside Air Economiz er
setpoint.
To change the desired outside air economizer temperature scroll through the
SETPOINTS menu tree, locate the ECONOMIZER Setpoint, and enter a new
temperature. The default for this setpoint is 65°F. The allowable temperature
range is 40°F - 80°F.
Ventilation Mode occurs when the fan is running but the unit is not providing
heating or cooling.
On an MDT control system the heating mode is activated when the remote
temperature setpoint knob is turned to start the unit. See Energy Savings Modes
for more information.
On all other systems the ventilation mode is dependant on the room
temperature. The heating/ventilation/cooling operation is demonstrated below.
The dotted line in the middle of the diagram represents the change between
room temperature rise and room temperature fall. Select a point on the heavy
line in the diagram to determine the mode of operation.
EXAMPLE: Start at point "A". The unit is in the ventilation mode and the room
temperature is rising. Follow the dashed line upward. If the room temperatu r e
rises to a temperature that is 2°F over the cooling setpoint, the cooling will be
enabled, and the unit will be in the cooling mode. Fo llow the solid line clockwise.
Once the room temperature has fallen to the cooling setpoint, the cooling mode
will be disabled, and the room will be in the ventilation mode. Follow the dashed
14 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Unit Operating Modes
line downward. If the room temperature falls to a temperature that is 2°F below
the heating setpoint, the heating will be enabled, and the unit will be in the
heating mode. Continue following the solid line in a clockwise direction to the
heating setpoint. Once the room temperature rises to the heating setpoint, the
heating mode will be disabled, and the room will be in the ventilation mode.
Figure 1. Cooling Mode
Cooling mode
T
E
M
+2°F of cooling SP
cooling enable
P
E
Ventilation
R
mode
A
T
U
R
E
heating SP
R
I
S
E
Heating
mode
Cooling mode
-2°F of heating SP
cooling SP
heating enable
Cooling
mode
Ventilation
mode
Heating
mode
T
E
M
P
E
R
A
T
U
R
E
F
A
L
L
Heating mode
Cooling Mode
Cooling Mode allows the cooling to operate as needed a nd is activated whenever
the room temperature is 2° above the cooling setpoint. In the Cooling Mode the
cooling output will cycle to maintain a constant room temperature. The cooling
output does not have an anti-cycle delay.
The MDT control system does not support the Cooling Mode.
To change the desired cooling room temperature of an MRT control system,
rotate the temperature setpoint knob on the remote panel clockwise to the
desired temperature. The allowable temperat ure range is 55°F - 90°F. The cooling
will be disabled when the room temperature drops to the Cooling Setpoint.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 15
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Unit Operating Modes
To change the desired cooling room temperature of an MRT-Pro control system,
depress the Warmer button to increase the desired room temperature setpoin t or
depress the Cooler button to decrease the desired room temperature setpoint.
Each push of a button changes the temperature setpoint by 1°F. The setpoint can
be changed a maximum of ±10°F from the default of 72°F.
To change the desired cooling room temperature of an MRT-Expert control
system, scroll through the SETPOINTS menu tree using the BACview, locate the
Occupied Cooling Setpoint, and enter a new temperature. The allowable
temperature range is 61°F - 96°F. The burner will modulate using a PID loop to
maintain this temperature.
Additionally, on all controls systems except the MDT the control system cycles
the cooling output to maintain the supply air temperature within a defined
operating window. This window defines the maximum and minimum discharge
temperatures.
To change the desired minimum supply or discharge air temperature scroll
through the SETPOINTS menu tree, locate the CLG MIN DA Setpoint, and enter a
new temperature. This temperature must not be greater than the CLG MAX DA
Setpoint. The allowable temperature range is 55°F - 130°F. This sets the lowest
discharge air temperature that will leave the unit.
To change the desired maximum supply or discharge air temperature scroll
through the SETPOINTS menu tree, loca te the CLG MAX DA S etpoint, and enter a
new temperature. This temperature must not be less than the CLG MIN DA
Setpoint. The allowable temperature range is 55°F - 130°F. This sets the highest
discharge air temperature that will leave the unit.
If the maximum and minimum discharge temperature setpoints are set for the
same temperature, the supply air temperature will be the same as the setpoint
regardless of the room temperature setpoint or actual room temperature.
Damper Control Modes
There are four different modes that control the unit damper operation: Manual,
Mixed Air Temperature, Building Pressure, and 100% Outside Air. Except for the
100% Outside Air mode, these operating modes are selected through the menu
tree of the local user interface or PC. Not all damper modes are available on all
units.
Manual Mode
Manual Mode is the default damper operational mode. This will set the outside
air damper to a fixed position.
MDT and MRT Controls. To place the damper operation in Manual Mode on an
MDT or MRT control sy st em b e sure th e ap propria te termin als in the unit cont rol
panel are not shorted. See the Typical Wiring Schematic and Multiplexed Input
sections of this manual for more information. Rotate the damper control knob on
the remote panel to the desired percentage of outside air. If the unit served by
this control is a direct-fired heater, that recirculates air before the burner, and is
16 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
Page 17
Unit Operating Modes
operating in the heating mode, the unit will automatically keep the minimum
outside air at 20%. If the outside air drops below 20%, the burner will cycle off.
See Minimum Ventilation.
MRT-Pro Controls. To change the damper mode on an MRT-Pro control system
requires the use of a BACview or PC. See the section related to the MRT Expert
for instructions on how to use the BACview for programming.
MRT-Expert Control. To place the damper operation in Manual Mode scroll
through the menu tree, locate the Damper Mode branch and select Manual Pos.
Next, scroll through the menu tree, locate the Setpoints branch, select Man Vent
SP, and enter the desired damper position. The allowable range is 0% to 100%. If
the unit served by this control is a direct-fired heate r, that recirculates air before
the burner, and is operating in the heating mode, the unit will automatically keep
the minimum outside air at 20%. If the outside air drops below 20%, the burner
will cycle off. See Minimum Ventilation.
Mixed Air Temperature Mode
The Mixed Air Temperature mode varies the percentages of outside air and
return air to maintain a constant mixed air t emperature. The AdaptA ire controller
computes the mixed air temperature using the outside air and return air
temperatures and the ratio of their respective airflows.
MDT and MRT Controls. To place the damper operation in Mixed Air
Temperature Mode on an MDT or MRT control system be sure the appropriate
terminals in the unit control panel are shorted. See the Typical Wiring Schematic
and Multiplexed Input sections of this manual for more information. Rotate the
damper control knob on the remote panel to the desired mi xed air temperature. If
the unit served by this control is a direct-fired heate r, that recirculates air before
the burner, and is operating in the heating mode, the unit will automatically keep
the minimum outside air at 20%. If the outside air drops below 20%, the burner
will cycle off. See Minimum Ventilation.
MRT-Pro Controls. To change the damper mode on an MRT-Pro control system
requires the use of a BACview or PC. See the section related to the MRT Expert
for instructions on how to use the BACview for programming.
MRT-Expert Control. To place the damper operation in Mixed Air Temperature
Mode scroll through the menu tree, locate the Damper Mode branch and select
MA Temp Ctrl. Next, scroll through the menu tree, locate the Setpoints branch,
select Mixed Air , and enter th e desired temperature. The allow able range is 30°F -
80°F. If the unit served by this control is a direct-fired heater, that recirculates air
before the burner, and is operating in the heating mode, the unit will
automatically keep the min imum outside air at 20%. If the outside air drops
below 20%, the burner will cycle off. See Minimum Ventilation.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 17
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Unit Operating Modes
Building Pressure Mode
The Building Pressure mode varies the percentages of outside air and return air
to maintain a constant pressure within the space. A pressure transducer
compares the pressure outside the space to the pressure inside the space and
transmits a corresponding signal to the AdaptAire controller. The controller
compares this signal to the desired building pressure setpoint and uses a PID
loop to modulate the outside air and return air dampers to maintain the specified
building pressure.
MDT and MRT Controls. The MDT and MRT control systems do not support
building pressure control mode.
MRT-Pro Controls. To change the damper mode on an MRT-Pro control system
requires the use of a BACview or PC. See the section related to the MRT Expert
for instructions on how to use the BACview for programming.
MRT-Expert Control. To place the damper operation in Building Pressure Mode
scroll through the menu tree, locate the Damper Mode branc h and select Bld g Prs
Ctrl. Next, scroll through the menu tree, locate the Setpoints branch, select Bldg
Prs, and enter the desired pressure. The allowable ran ge is -0.0 5"wc to +0.05"wc.
If the unit served by this control is a direct-fired heater, that recirculates air before
the burner, and is operating in the heating mode, the unit will automatically keep
the minimum outside air at 20%. If the outside air drops below 20%, the burner
will cycle off. See Minimum Ventilation.
18 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Functions
100% Outside Air
The 100% Outside Air function automatically opens the outside air dampers and
closes the return air dampers. This function is activated whenever a contact is
closed between the appropriate terminals on the unit's terminal strip located in
the unit's main control panel. See the Typical Wiring Schematic and Multiplexed
Input sections of this manual for more information. The 100% Outside Air
function overrides all other damper control functions. See User Configured PID
Control for use with non-recirculating units.
Minimum Ventilation
To change the Minimum Ventilation requires the use of a BACview or PC. The
Minimum Ventilation function defines the minimum outside air percentage and
automatically prevents the dampers from modulating below this point. This
function can be used in heating or cooling mode. If the unit served by this control
is a direct-fired heater, that recirculates air before the burner, and is operating in
the heating mode, the unit will automatically keep the minimum outside air at
20%. If the outside air drops below 20%, the burner will cycle off. To specify the
Minimum Ventilation scroll through the menu tree, locate the Setpoints branch
and select Min Vent, and enter the desired outside air percentage. The allowable
range is 0% - 100% outside air.
Freezestat
Clogged Filter
To change the Minimum Ventilation requires the use of a BACview or PC. The
Freezestat function automatically cycles the unit off if the supply air temperature
drops below the Freezestat setpoint for 3 continuous minutes. There is an initial
8-minute delay prior activation on recirculating units, and an initial 6-minute
delay on non-recirculating units. The Freezestat function prevents the unit from
starting. The default for this setpoint is 45°F. To change the Freezestat setpoint
scroll through the menu tree, locate the Setpoints branch, select Freezestat SP,
and enter a new temperature. The allowable temperature range is 35°F - 50°F.
An optional clogged filter switch is required for this function. The Clogged Filter
function automatically notifies the user of a dir ty filter condit ion. A Clogged Filter
indication will appear on the remote panel or local user interface. This function is
activated whenever a contact is closed between the appropriat e terminal s on the
unit's terminal strip located in the unit's main control panel. See the Typical
Wiring Schematic and Multiplexed Input sections of this manual for more
information.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 19
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Functions
User Configured PID Control
This function is applicable to non-recirculating units only. The User Configured
PID Control function allows the user to control an analog output based on a user
defined analog input and setpoint. See the Typical Wiring and Unit Controller
Specification sections of this manual for more information regarding the inputs
and outputs. This function also allows the user to select the PID type (direct or
reverse acting) and establish upper and lower control limits. Five keypad entries
define the operational parameters. These parameters are: User Control Setpoint,
Minimum User Setpoint, Maximum User Setpoint, Low Input Value, and High
Input Value. The low and high input values describe the input transducer range.
The control setpoint is the primary operational parameter while the minimum
and maximum setpoints describe the extents of the desired operating range and
provide secondary control as described below. The allowable range for all of
these parameters is -9999.99 - +99999.99.
The analog input and output are polarity sensitive and can be configured for
different types of input s. See the Typical Wir ing an d Unit Contro ller Speci ficati on
sections of this manual for more information regarding the inputs and outputs.
DIRECT ACTING
The analog input must be connected to IN-1. This input must be configured for
either of two different types of input signals:
• 0-5Vdc: The output impedance must not exceed 10K?. The input impedance
of the controller is 1M?. This input is polarity sensitive. Be sure the
connections from the source are correctly polarized at the controller.
• Thermistor: Precon type 2 (10k ohm at 77°F) Input voltages should range
between 0.489V and 3.825V. See the wiring diagrams for recirculating model
units for typical connections of transducers.
• The IN-1 configuration jumpers on the controller must be set for the
appropriate input signal.
A contact closure between the appropriate terminals on the unit's
terminal strip located in the unit's main control panel will drive the
output to 100%. See the Typical Wiring Schematic and Multiplexed Input
sections of this manual for more information.
The controller output is modulated by a PID loop from 0% to 100% based on the
User Control setpoint and the input signal. As the input signal increases the
output voltage increases. Additionally, a secondary control acts to override the
PID loop to scale the output as follows.
If the input variable equals the User Control setpoint, the output will be
determined by the PID loop. In this situation the override has no effect on the
output value.
If the input variable is above the User Co ntrol setpoin t, the out put could increase
from 0% to 100% as the input variable increases from the User Control setpoint
20 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Functions
to the Max User setpoint. In this situation the output value is the greater of the
PID output or the override output.
If the input variable is below the User Control setpoint, the output could decrease
from 100% to 0% as the input variable decreases from the User Control setpoint
to the Min User setpoint. In this situation the output va lue is the lesser of the PID
utput or the override output. See the following example.
Assume the user wishes to control a chilled water valve using a temperature
transducer. The control variable will be supply air temperature. As the supply air
temperature increases, the chilled water valve should open to lower the
temperature. The temperature transducer has a range of 50ºF - 85ºF. The user
would like the supply air temperature to be 75ºF but does not want it to drop
below 70ºF or go above 80ºF. The parameters entered on the keypad display will
be:
Direct (as input increases
PID Select
High Input Val 85ºF
Low Input Val 50ºF
User Ctrl SP 75ºF
Max User SP 80ºF
Min User SP 70ºF
output increases)
The temperature transducer senses the supply air temperature and sends a
corresponding signal to the AdaptAire controller. The controller compares this
signal to the desired user control setpoint (75ºF) and uses the PID loop to
modulate the output from 0-100% (0-10Vdc). The output is connected to the
chilled water valve that opens or closes to maintain the specified supply air
temperature.
If the supply air temperature is 75ºF, the output from the controller will be
determined by the PID control sequence, and the override will have no effect on
the output.
If the supply air temperature is more than 75ºF, the output from the controlle r will
be determined by the PID control sequence or the override whichever is less.
If the supply air temperature is less than 75ºF, the output from the controller will
be determined by the PID control sequence or the override whichever is more.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 21
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Functions
User Ctrl SP
Figure 2. Direct acting
REVERSE ACTING
Max User SP
Min User SP
80ºF 100%
override
scaler
75ºF 0%
75ºF PID 0-100%
75ºF 100%
override
scaler
70ºF 0%
>
=
0-100%
Output
The controller output AO-1 is modulated by a PID loop fro m 0% to 1 00% based on
the User Control setpoint and the input signal to IN-9. As the input signal
increases the output voltage decreases. Additionally, a secondary control acts to
override the PID loop to scale the output as follows.
If the input variable equals the User Control setpoint, the output will be
determined by the PID loop. In this situation the override has no effect on the
output value.
If the input variable is above the User Control setpoint, the output could decrease
from 100% to 0% as the input variable increases from the User Control setpoint
to the Max User setpoint. In this si tuation th e output value i s the le sser of t he PID
output or the override output.
If the input variable is below the User Contr ol setpoin t, the output could increase
from 0% to 100% as the input variable decreases from the User Control setpoint
to the Min User setpoint. In this situation the output value is the greater of the
PID output or the override output. See the following example.
Assume the user wishes to control the fan speed using a variable frequency drive
(VFD). The VFD input is 0-10Vdc. The control variable will be building pressure.
As the building pressure increases, the fan speed should decrease. The building
pressure transducer has a range of -0.1" to +0.1". The user would like the building
22 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Functions
pressure to be+0.03" but does not want it to drop below 0.0" or go above +0.05".
The parameters entered on the keypad display will be:
PID Select Reverse (as input increases output decreases)
High Input Val .10
Low Input Val -0.10
User Ctrl SP 0.03
Max User SP 0.05
Min User SP 0.00
The pressure transducer compares the pressure outside the space to the
pressure inside the space and transmits a corresponding signal to the AdaptAire
controller. The controller compare s this signal to the desired user control
setpoint (0.03") and uses the PID loop to modulate the output from 0-100% (010Vdc). The output is connected to the VFD that changes speed to maintain the
specified building pressure.
If the building pressure is 0.03", the output from the controller will be deter mined
by the PID control sequence, and the override will have no effect on the output.
If the building pressure is more than 0.03", the output from the controller will be
determined by the PID control sequence or the override whichever is less.
If the building pressure is less than 0.03", the output from the controller will be
determined by the PID control sequence or the override whichever is more.
Figure 3. Reverse acting
User Ctrl SP
Max User SP
Min User SP
.05” 0%
override
scaler
.03” 100%
.03” PID 0-100%
.03” 0%
override
scaler
.00” 100%
Input > .03”?
Input < .03”?
>
=
0-100%
Output
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 23
Page 24
Unit Resets
Functions
This section should assist the user in resetting alarms and cycle counters which
have been displayed on the BACview.
ALARM. To reset an alarm scroll through the menu tree, locate the Unit Resets
branch and select Alarm. Press the Enter key. The word OFF should flash. Now
press the INC key and the word ON should flash on the display. Press the Enter
key again and ON should stop flashing. Repeat this process so the word OFF is
displayed and not flashing. The alarm has now been cleared and the Alarm RS
function has been rearmed.
CALIBRATE. The Calibrate function forces the controller to recalibrate the return
air flow station. The recalibration will occur immediately if the fan is running or at
the next fan start. To recalibrate scroll through the menu tree, locate the Unit
Resets branch and select Calibrate. Press the Enter key. The word OFF should
flash. Now press the INC key and the word ON should flash on the display. Press
the Enter key again and ON should stop flash ing. Repe at this process so the word
OFF is displayed and not flashing. The calibration has now bee n initiated and t he
Calibration function has been rearmed.
FAN COUNT. Fan Count records each fan star t. To reset a fan count scroll through
the menu tree, locate the Unit Resets branch and select Fan Count. Press the
Enter key. The word OFF should flash. Now press the INC key and the word ON
should flash on the display. Press the Enter key again and ON should stop
flashing. Repeat this process so the word OFF is displayed and not flashing. The
fan count has now been cleared and the Fan Count function has been rearmed.
HEATING COUNT. Heating Count records each burner start. To reset a heating
count scroll through the menu tree, locate the Unit Resets branch and select
Heating Count. Press the Enter key. The word OFF should flash. Now press the
INC key and the word ON should flash on the display. Press the Enter key again
and ON should stop flashing. Repeat this process so the word OFF is displayed
and not flashing. The heating count has now been cleared and the Heating Count
function has been rearmed.
COOLING COUNT. Cooling Count records each cooling start. To reset a cooling
count scroll through the menu tree, locate the Unit Resets branch and select
Cooling Count. Press the Enter key. The word OFF should flash. Now press the
INC key and the word ON should flash on the display. Press the Enter key again
and ON should stop flashing. Repeat this process so the word OFF is displayed
and not flashing. The cooling count has now been cleared and the Cooling Count
function has been rearmed.
Multiplexed Inputs
DDC controllers are designed with a finite number of inputs and outputs.
Multiplexing expands the functionality of the controller by allowing multiple
devices to effectively share the same input. This is usually accomplished by
connecting resistors, either in a series or parallel configuration, to an analog
24 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
Page 25
Clock Set
Functions
input. A switch is used in conjunctio n with each resistor. When a switc h is closed,
the resistance at the controller input changes. This allows the controller to
identify which switch has closed. The controller is programmed to associate eac h
different resistance with a specific function. For example when the optional
clogged filter switch is closed between t he appropriate terminals on the unit's
terminal strip located in the unit's main control panel, this tells the controller that
the filters are clogged, and it notifies the user through the local user interface.
See the Typical Wiring Schematic section of this manual for more information.
The Clock S et function i s used to set the cur rent time and date as well as enabl ing
Daylight Saving Time. To set the clock scroll through the menu tree, locate the
Clockset branch, select Date, and enter a new date and time. S elect DST to enable
Daylight Saving Time. Daylight Saving Time is the default. If the unit is installed
in the southern hemisphere, Sou Hem must be enabled. The default is not Sou
Hem. For you convenience Daylight Saving Time has been preprogrammed for
the next several years. To reset the starting and ending DST dates scroll through
the DST menu tree, locate the desired year, and enter a new date.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 25
Page 26
Diagnostics
Critical Fault Codes
This section should assist the user in troubleshooting critical fault codes
messages that have been displayed on the local user interface. These faults
require the operator to correct the condition and reset the alarm before normal
unit operation resumes.
FAULT CODE: Low Discharge Temperature
PROBLEM: The controller has detected a low temperature at the fan
outlet and has shut off the unit. See Freezestat section of this manual.
SOLUTION: If burner was operating prior to shutdown (check prior alarm log)
1. Is the outside air (OA Temp) or room air (Room Temp) displayed on the
BACview remote, reading 150°F or more?
– Yes. That sensor circuit or the sensor itself is shorted. Unplug the input
jack fr om the Ad apt Air e con tro ll er. Did the display change to - 40 °F o r le ss?
– No. There is a short in the controller input. Replace the controller.
– Yes. Disconnect the sensor wiring at the sensor. Connect an ohmmeter
to the sensor. If it is shorted replace the sensor. At 77°F the resistance
should be 10K?. See thermistor output curve for other temperatures. If
it is not shorted, there is a shor t in the wiring between the sensor and
the input plug. Determine cause and rectify. Refer to Appendix II for a
typical 10K? thermistor output curve.
– No. Continue.
2. Is the discharge air temperature (DA Temp), displayed on the BACview
remote, reading -40°F or less?
– Yes. That sensor circuit or the sensor itself is open. Jumper the input for
the sensor. Did the display change to 150°F or more?
– No. There is an open in the controller in pu t . Replace the co n tro lle r.
– Yes. Disconnect the sensor wiring at the sensor. Connect an ohmmeter
to the sensor. If it is open replace the sensor. At 77°F the resistance
should be 10K?. See thermistor output curve for other temperatures. If
it is not open, there is a break in the wiring between t he sensor and the
input plug. Determine cause and rectify.
– No. Continue
3. Reset the alarm. Check and note the DC voltage at output for the gas valve
modulation. Set the Heating Setpoint f or 90°F. Set the MAX DAT and MIN DAT
Setpoints for 130°F. Did the Burner VDC, displayed on the BACview remote,
increase?
– No. Unless the outside air temperature is extremely w arm the Burner VDC
should have increased to 7.5VDC or more. Close the manual main gas
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Diagnostics
valve closest to the burner and measure the discharge air temperature. Is
it less than 130°F?
– Yes. There is a problem with the controller program or controller itself.
Contact the factory.
– No. The outside air temperature is too hot to determine the actual
cause of the problem. Reset t he alarm and recheck when the outside air
temperature is much cooler.
– Yes. This signal is fed to the gas valve modulation signal conditioner.
Disconnect the wires from input signal terminals on the signal conditioner
and measure the voltage on the wires. Is it the same as the voltage
coming from the controller?
– No. There is an open in the wiring from the controller output. Correct
wiring and reconnect the wires to the terminals on the signal
conditioner. Be sure the ground wire from the controller output
terminal is connected to the signal conditioner's negative terminal.
– Yes. Continue.
4. Is there 24VAC on the signal conditioner power terminals?
– No. Determine cause and rectify.
– Yes. Continue.
5. Is there twice the DC voltage on the signal conditioner's output terminals as
there is on the signal conditioner's input terminals?
– No. Replace the signal conditioner.
– Yes. Continue.
6. Is the DC voltage on the modulating valve terminals the same as the DC
voltage on the signal conditioner's output terminals?
– No. There is a break in the wiring between the signal conditioner and the
modulating valve terminals. Determine cause and rectify.
– Yes. The electronics are working to this point. Continue.
7. Is there sufficient temperature rise for the amount of outside air that is being
delivered to the space?
– No. Follow the instructions in this manual for placing the unit in Manual
damper control mode. Adjust the Man. Vent setpoint to 20% outside air. Is
there sufficient temperature rise for the amount of outsid e air that is being
delivered to the space?
– No. Contact the factory.
– Yes. Continue.
– Yes. Continue.
8. Verify there is sufficient inlet gas pressure. Verify the modulating valve is
properly adjusted. Verify the burner orifices are clear of obstruction. Contact
the factory.
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Diagnostics
SOLUTION: If burner was not operating prior to shutdown (check prior
alarm log)
1. Is there a prior alarm such as Safety Ckt., Airflow Sw., or Flame Failure?
– Yes. See the Diagnostic section for the previous alarm.
– No. Continue.
2. Is the room air (Room Temp) displayed on the BACview remote, reading
150°F or more?
– Yes. The sensor circuit or the sensor itself is shorted. Unplug the input
jack fr om the Ad apt Air e con tro ll er. Did the display change to - 40 °F o r le ss?
– No. There is a short in the controller input. Replace the controller.
– Yes. Disconnect the sensor wiring at the sensor. Connect an ohmmeter
to the sensor. If it is shorted replace the sensor. At 70°F the resistance
should be 10K?. See thermistor output curve for other temperatures. If
it is not shorted, there is a shor t in the wiring between the sensor and
the input plug. Determine cause and rectify. Refer to Appendix II for a
typical 10K? thermistor output curve.
– No. Continue.
3. Is the discharge air temperature (DA Tempt), displayed on the BACview
remote, reading -40°F or less?
– Yes. The discharge air temperature sensor circuit or the sensor itself is
open. Jumper the input for the sensor. Did the display change to 150°F or
more?
– No. There is an open in the controller in pu t . Replace the co n tro lle r.
– Yes. Disconnect the discharge air temperature senso r wiring at the
sensor. Connect an ohmmeter to the sensor. If it is open replace the
sensor. At 70°F the resistance should be 10K?. See thermistor output
curve for other temperatures. If it is not open, th ere is a break in the
wiring between the sensor and the input plug. Determine cause and
rectify.
– No. Continue
4. Reset the alarm. Check and note the DC voltage at controller's analog output
for the heating signal. Set the He ating S etpoint for 9 0°F. Set the HTG MAX DA
and HTG MIN DA Setpoint s for 130°F. Did the Burner VDC, displayed on the
BACview remote, increase?
– No. Unless the outside air temperature is extremely w arm the Burner VDC
should have increased to 7.5VDC or more. Close the manual main gas
valve closest to the burner and measure the discharge air temperature. Is
it less than 130°F?
– Yes. There is a problem with the controller program or controller itself.
Contact the factory.
– No. The outside air temperature is too hot to determine the actual
cause of the problem. Reset t he alarm and recheck when the outside air
temperature is much cooler.
28 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Diagnostics
– Yes. This signal is fed to the signal conditioner. Disconnect the wires from
the signal conditioner's input signal terminals and measure the v oltage on
the wires. Is it the same as the voltage coming from the controller?
– No. There is an open in the wiring from the controller output. Correct
wiring and reconnect the wires to the terminals on the signal
conditioner. Be sure the wire from the controller's ground terminal is
connected to the signal conditioner's ground terminal.
– Yes. Continue.
5. Is there 24VAC on the signal conditioner power terminals?
– No. Determine cause and rectify.
– Yes. Continue.
6. Is there twice the DC voltage on the signal conditioner's output terminals as
there is on the signal conditioner's input terminals?
– No. Replace the signal conditioner.
– Yes. Continue.
7. Is the DC voltage on the modulating valve terminals the same as the DC
voltage on the signal conditioner's output terminals?
– No. There is a break in the wiring between the signal conditioner and the
modulating valve terminals. Determine cause and rectify.
– Yes. The electronics are working to this point. Continue.
8. Is there sufficient temperature rise for the amount of outside air that is being
delivered to the space?
– No. Follow the instructions in this manual for placing the unit in Manual
damper control mode. Adjust the Man. Vent setpoint to 20% outside air. Is
there sufficient temperature rise for the amount of outsid e air that is being
delivered to the space?
– No. Contact the factory.
– Yes. Continue.
– Yes. Continue.
9. Verify there is sufficient inlet gas pressure. Verify the modulating valve is
properly adjusted. Verify the burner orifices are clear of obstruction. Contact
the factory.
FAULT CODE: Safety Circuit Open
PROBLEM:The controller has detected a failure in the safety circuit.
SOLUTION: If fan is not running (check prior alarm log)
1. Is there a prior alarm such as Unit On/Fan Off or Airflow Sw?
– Yes. See the Diagnostic section for the previous alarm.
– No. Continue.
2. Set Unit Mode to Manual. Did fan start?
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Diagnostics
– No. See the Diagnostic section for Unit On/Fan Off.
– Yes. Continue.
SOLUTION:If fan is running (check prior alarm log)
1. Is the high temperature limit tripped?
– Yes. Determine cause and rectify.
– No. Continue.
2. Is the low gas pressure switch closed?
– No. V erify the inlet g as pressur e is as specified on the g as piping diagram.
The low gas pressure switc h setpoin t should not be adjusted. The inlet g as
pressure must remain as specified when unit fires at full input. Cor rect g as
pressure and reset switch. If the switch cannot be reset, replace it. See
Installation, Operation and Owners Manual for more information.
– Yes. Continue.
3. Is the high gas pressure switch closed?
– No. Verify the firing rate pressure at full input is as specified on the unit
rating plate. The high gas pressure switc h setpoint should not be adjusted.
The firing rate pressure must remain as specified when unit fires at full
input. Correct gas pressure and reset switch. If the switch cannot be reset,
replace it. See Installation, Operation and Maintenance Manual for more
information.
– Yes. Continue.
4. Is the safety circuit relay energized?
– No. Check for loose wiring and rectify.
– Yes. Continue.
5. Is the safety circuit relay's normally open contact closed?
– No. Replace the relay.
– Yes. Continue.
6. Is there continuity at the controller between the safety status terminals?
– No. There is an open in the wiring between these terminals. Determine
– Yes. Replace controller.
FAULT CODE:Burner Status
PROBLEM: The controller has activated the burner enable output, but the
burner status input is not receiving a signal that the burner is on.
SOLUTION:Inspect burner control circuit and burner
1. Is there a prior alarm such as Unit On/Fan Off, Airflow Sw., or Safety Circuit?
– Yes. See the Diagnostic section for the previous alarm.
cause and rectify.
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Diagnostics
– No. Continue.
2. Is the burner enable relay energized?
– No. There is an open in the 24VAC circuit. Determine cause and rectify.
– Yes. Continue.
3. Is the burner enable relay's normally open contact closed?
– No. Replace relay.
– Yes. Continue.
4. Is there a pilot flame present?
– No. Refer to the Installation, Operation and Maintenance Manual for
guidance in troubleshooting the flame relay or ignition module.
– Yes. Continue.
5. Is the flame relay or ign ition module main valve terminal energized?
– No. Refer to the Installation, Operation and Maintenance Manual for
guidance in troubleshooting the flame relay or ignition module.
– Yes. Continue.
6. Is the gas valve/burner status relay energized?
– No. There is an open in the main valve control c ircuit. Determine cause
– Yes. Continue.
7. Is the gas valve/burner status relay's normally open contact closed?
– No. Replace relay.
– Yes. Continue.
8. Is there continuity at the controller between the burner status terminals?
– No. There is an open in the wiring between these terminals. Determine
– Yes. Replace controller.
FAULT CODE: Burner Hand
PROBLEM: The controller has not activated the burner enable output, but
the burner status input is receiving a signal that the burner is on.
SOLUTION:Inspect burner control circuit. This fault has the potential to
be a very serious problem. Close the manual gas valves immediately if
the fan is not running.
and rectify.
cause and rectify.
1. Is the controller's burner enable output LED lit?
– Yes. Close manual gas valves. There is a problem with the controller
program. Contact factory.
– No. Continue.
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Diagnostics
2. Are the main automatic gas shutoff valves energized?
– No. The main automatic gas shutoff valves are leaking. Turn off unit and
close manual gas valves. Deter mi ne cause of valve failure and rectify.
– Yes. Continue.
3. Is the flame relay ene r gized?
– No. There is a short in the wiring of the gas valves. Close manual gas
valves. Determine cause of short and rectify.
– Yes. Continue.
4. Is the burner enable relay energized?
– Yes. There is a short in the wiring of the flame relay. Close manual gas
valves. Determine cause of short and rectify.
– No. Continue.
5. Is the burner enable relay's normally open contact closed?
– Yes. Close manual gas valves. Replace the relay.
– No. Continue.
6. Unplug the input terminals from the input jack. Is there continuity at the
controller between the burner status terminals?
– No. Close manual gas valves. There is a short in the wiring between the
– Yes. Close manual gas valves. Replace the controller.
FAULT CODE: Flame Failure
Note: This fault code is not applicable to all unit types.
PROBLEM:The controller has received a signal from the flame relay
indicating a flame failure.
SOLUTION:Investig ate flame relay
1. Is there a prior alarm such as Unit On/Fan Off, Airflow Sw., or Safety Circuit?
– Yes. See the Diagnostic section for the previous alarm.
– No. Continue.
2. See flame relay troubleshooting information in unit Installation, Operation,
and Maintenance Manual.
burner status relay and the burner status terminals. Determine cause and
rectify.
Diagnostics - Non-Critical Fault Codes
This section should assist the user in troubleshooting non-critical fault code
messages that have been displayed on the local user interf ac e. Most of these
faults are automatically reset once the fault is corrected or condition changes.
32 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Diagnostics
FAULT CODE: Unit off/Fan on
PROBLEM: The controller has not activated the unit enable output to start the
fan, but the fan status input, is receiving a signal that the fan is running. This fault
will automatically clear about 15 seconds after the fault is corrected.
SOLUTION: If fan is running
1. Is controller unit enable output LED for lit?
– Yes. There is a problem with the controller program. Call factory.
– No. Continue.
2. Is controller output contact for the unit enable output closed?
– Yes. Turn off the power to the controller and recheck. If contact is still
closed the controller output is shorted. Replace the controller.
– No. Continue.
3. Is the unit enable relay energized?
– Yes. There is a short or jumper in the wiring. Determine cause and rectify.
– No. Continue.
4. Is motor starter energized?
– Yes. There is a short or jumper in the wiring. Determine cause and rectify.
– No. Continue.
5. Is the fan status relay energized?
– Yes. There is a short or jumper in the wiring. Determine cause and rectify.
– No. Continue.
6. Is the fan status relay's normally open contact, closed?
– Yes. Replace relay.
– No. Continue.
7. Is there continuity between at the controller between the fan status
terminals?
– Yes. T he re is a sh ort in the wiri ng between these terminals. De te rmine
cause and rectify.
– No. Replace controller.
SOLUTION: If fan is not running
1. Is the fan status relay's normally open contact, closed?
– Yes. Replace relay.
– No. Continue.
2. Is there approximately 5VDC at both controller terminals used for the fan
status?
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Diagnostics
– Yes. T he re is a sh ort in the wiri ng between these terminals. De te rmine
cause and rectify.
– No. Replace controller.
FAULT CODE:Unit on/Fan off
PROBLEM:The controller has activated the unit enable output to start the fan , but
the fan status input, is not receiving a signal that the fan is running. This fault will
automatically clear about 60 seconds after the fault is corrected. Turning the unit
off and then on will clear this fault at any time.
SOLUTION:If fan/motor is running
1. Is the BACview remote indicating an alarm?
– Yes. Check previous alarms and continue.
– bContinue.
2. Is the motor starter's normally open auxiliary contact, closed?
– No. Replace contact.
– Yes. Continue.
3. Are the high and low velocity airflow switch co ntacts, closed?
– No. Are the belts on and is the fan motor.
– Yes. Contact factory. Do not adjust the switches setpoints.
– No. Determine cause and rectify.
– Yes. Continue.
4. Is the fan status relay energized?
– No. There is an open or break in the wiring. Determine cause and rectify.
– Yes. Continue.
5. Is the fan status relay's normally open auxiliary contact, closed?
– No. Replace relay.
– Yes. Continue.
6. Is there continuity at the controller between the fan status terminals?
– No. There is an open in the wiring between these terminals. Determine
cause and rectify.
– Yes. Replace controller.
SOLUTION: If fan/motor is not running
1. Is the BACview remote indicating an alarm?
– Yes. Check previous alarms and continue.
– No. Continue.
2. Is controller output LED for the unit enable output lit?
– No. There is a problem with the controller. Replace controller.
34 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Diagnostics
– Yes. Continue.
3. Is the unit enable relay energized?
– No. There is an open in the wiring between these terminals. Determine
cause and rectify.
– Yes. Continue.
4. Is the unit enable relay's normally open contact, closed?
– No. Replace relay.
– Yes. Continue.
5. Is the motor overload relay tripped?
– Yes. Determine cause, rectify and reset.
– No. Continue.
6. Is the motor starter energized?
– No. There is an open or break in the wiring. Determine cause and rectify.
– Yes. Check motor and motor wiring.
FAULT CODE: Check Airflow Switches
PROBLEM: The controller has activated the unit enable output to start the fan,
and detected that the fan is running from a signal at the fan status input.
Subsequently, the cont roller has detected a momentary ope ning of the fan status
input. The momentary opening must occur within two seconds of the previous
closure for this fault to occur. This fault requires the operator to correct the
condition and reset the alarm before normal unit operation resumes.
SOLUTION:If high airflow switch is opening. Do not adjust the switch
setpoints
1. Are all of the filters in place?
– No. Install filters and continue.
– Yes. Continue.
2. Does the external static pressure match that listed on the rating plate?
– No. Verify all associated ductwork is installed and continue.
– Yes. Continue.
3. Does the fan RPM match that listed on the Spec. Sheet?
– No. Correct to reduced fan speed and continue.
– Yes. Continue.
4. Are the airflow switches' sensing tubes obstructed?
– Yes. Clear and continue.
– No. Continue.
5. Contact factory.
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Diagnostics
SOLUTION:If low airflow switch is opening. Do not adjust the switch
setpoints
1. Does low airflow switch open when the burner is off
– No. Disconnect both pressure sensing tubes from one of the airflow
switches and measure the differential pressure by connecting the high
sensing port of a manometer to one of the airflow sensing tubes and the
low sensing port to the other. Is the differential pressure approxim ately
the midpoint between the high and low airflow switch setpoints?
– No. Close the profile opening until the differential pressure is
approximately the midpoint between the high and low airflow switch
setpoints. Reconnect the sensing tubes, restart the burner, and verify
the airflow switch remains closed when the burner is at the maximum
rated input. Continue.
– Yes. Continue.
2. Are all of the filters dirty?
– Yes. Install clean filters and continue.
– No. Continue.
3. Does the external static pressure match that listed on the rating plate?
– No. Verify all associated ductwork is installed as designed, and there are
no obstructions. Continue.
– Yes. Continue.
4. Does the fan RPM match that listed on the Spec. Sheet?
– No. Correct to increased fan speed and continue.
– Yes. Continue.
5. Are the airflow switches' sensing tubes obstructed?
– Yes. Clear and continue.
– No. Continue.
6. Contact factory.
FAULT CODE: Clogged Filter Switch
PROBLEM: The filter air pressure switch has closed between the appropriat e
terminals on the unit's terminal strip located in the unit's main control panel
indicating a clogged filter. See the Typical Wiring Schematic, Multiplexed Input,
and Clogged Filter sections of this manual for more information.
SOLUTION:If clogged filter switch is closing.
1. Are the filters dirty?
– Yes. Install clean filters and continue.
– No. Continue.
2. Are the airflow switch sensing tubes obstructed?
36 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Diagnostics
– Yes. Clear and continue.
– No. Continue.
3. Is the airflow switch setpoint properly adjusted?
– No. Adjust setpoint.
– Yes. Continue.
4. Are the wires connected to the air pressure switch's normally open contact?
– No. Rewire switch and continue.
– Yes. Continue.
5. Is the air pressure switch's normally open contact open?
– No. Disconnect the sensing tubes and rec heck. Replace the switch if
contacts do not open.
– Yes. Continue.
6. Find the clogged filter switch on the electrical schematic and identify the
control panel terminals to which it is connected. Disconnect the wire from
these terminals. Does this clear the alarm?
– Yes. There is short in the wiring between the termin al strip and the switc h.
Determine cause and rectify.
– No. Continue.
7. Unplug the connector from the controller that is conne cted to the multiplexed
input. Does this clear the alarm?
– Yes. There is short in the wiring of the multiplexed resistors. Determine
cause and rectify.
– No. There is an internal short in the controller. Replace the controller.
FAULT CODE:Energy Save Mode 1
PROBLEM: The controller has turned off the burner enable output because it
determined the mixed air temperature is equal to or greater than the minimum
discharge air temperature setpoint, and the room air temperature is 5°F above
the room air temperature setpoint. See t he Energy S avings Mode 1 section of this
manual for more information.
SOLUTION:If setpoints are misadjusted
1. Is the mixed air temperature (MA Temp), displayed on the BACview remote,
greater than or equal to the minimum discharge air temperature setpoint?
– Yes. Increase the HTG MIN DAT setpoint. See Heating Mode - General
Burner Control section of this manual for more information.
– No. Continue.
2. Is the room temperature more than 5°F above the room air temperature
setpoint?
– Yes. I ncrease the HTG OCCUPIED setpoint. See Heating Mode - General
Burner Control section of this manual for more information.
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Diagnostics
– No. Continue.
SOLUTION:If setpoints are not misadjusted
1. Is there a prior alarm such as Insufficient OA?
– Yes. See the Diagnostic section for the previous alarm.
– No. Continue.
2. Is the discharge air temperature (DA Temp), displayed on the BACview
remote, reading 150°F or more?
– Yes. That sensor circuit or the sensor itself is shorted. Unplug the input
jack fr om the Ad apt Air e con tro ll er. Did the display change to - 40 °F o r le ss?
– No. There is a short in the controller input. Replace the controller.
– Yes. Disconnect the sensor wiring at the sensor. Connect an ohmmeter
to the sensor. If it is shorted replace the sensor. At 70°F the resistance
should be 10K?. See thermistor output curve for other temperatures. If
it is not shorted, there is a shor t in the wiring between the sensor and
the input plug. Determine cause and rectify. Refer to Appendix II for a
typical 10K? thermistor output curve.
– No. Contact factory.
FAULT CODE:Energy Save Mode 2
PROBLEM: The controller has turned off the burner enable output because it
determined the burner's minimum firing rate exceeds the allowable equivalent
temperature rise. See the Energ y Savi ngs Mode 2 section of this manual for mor e
information.
SOLUTION: If OAT, RoomT or DAT are such that heat is required
1. Are the outside air hood filters or bird screen or any associated outside air
ductwork obstructed?
– Yes. Clear obstruction or change filters.
– No. Continue.
2. Are the outside air and return air dampers and actuators working properly?
– Yes. Continue.
– No. Make necessary adjustments and force the unit to recalibrate. See
Calibrate in the Resets Section of this manual.
3. If equipped, are the flow measuring station pitot tubes and pressure tubing
clear?
– Yes. Continue.
– No. Clean and force the unit to recalibrate. See Calibrate in the Resets
Section of this manual.
4. Do the dampers track with a change in the %OA setpoint? The dampers
utilized on the unit are not line ar with respect to air flow and openness, and as
such, the proportion of outside air to damper movement will not be exactly
38 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Diagnostics
equal to the %OA setpoint. However, at 20% OA the dampers should be at
least ½" open.
– Yes. Continue.
– No. Check the damper motor and linkage connections. When 24VAC is
powering the damper actuator and the control signal is 0VDC, the outside
air damper should be close to a "rattle tight" position and the return air
damper should be open. If the 24VAC power is removed, the actuator will
draw the outside air damper tightly closed and the return air damper
tightly open. When 24VAC is powering the damper actuator and the
control signal is 10VDC, the outside air damper should be fully open and
the return air damper should be closed.
5. Is there approximately 24VAC at the COM and EXC terminals on the airflow
station pressure transducer?
– Yes. Continue.
– No. Is there 120VAC on the primary side of the low voltage transformer
and 24VAC volt at the transformer secondary?
– Yes. There is an open in the wiring between the transformer and the
transducer. Locate the wiring problem and rectify.
– No. If there is 120VAC on the primary and 0VAC on the secondary,
replace the transformer. If there is 0VAC on the primary, there is an
open in the wiring supplying power to the transformer. Locate the
wiring problem and rectify.
6. Remove both of the plastic t ubes from the airflow stat ion pressure transducer
and gently blow into the HIGH side port. Ca ution: The transducer is extremel y
sensitive. Blowing too hard into the sensing tube may damage the
transducer. Is there approximately 5VDC across the COM and OUT terminals
of the pressure transducer?
– Yes. Continue.
– No. The pressure transducer is defective. Replace it.
7. Remove both of t he plastic tubes from t he airflow station pressure t ransducer
and gently blow into the HIGH side port. Ca ution: The transducer is extremel y
sensitive. Blowing too hard into the sensing tube may damage the
transducer. Is there appr oximately 5VDC across the contro ller input terminals
that are connected to the transducer?
– Yes. The re is a problem wit h the controller. Replace it.
– No. There is an open in the wiring between these pressure tr ansducer and
the AdaptAire controller terminals. Locate and rectify.
FAULT CODE:Energy Save Mode 3
PROBLEM: The controller has turned off the burner enable output because it
determined the inlet air temperature exceeds the Economizer setpoint. See the
Energy Savings Mode 3 section of this manual for more information.
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 39
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Diagnostics
SOLUTION: If OAT, RoomT or DAT are such that heat is required
1. Is the outside air temperature (OA Temp), disp layed on the BACview remote,
reading 150°F or more?
– Yes. The outside air sensor circuit or the sensor itself is shorted.
Unplug the input jack from the AdaptAire controller. Did the display
change to -40°F or less?‘
– No. There is a short in the controller input. Replace the controller.
– Yes. Disconnect the sensor wiring at the sensor. Connect an ohmmeter
to the sensor. If it is shorted replace the sensor. At 70°F the resistance
should be 10K?. See thermistor output curve for other temperatures. If
it is not shorted, there is a shor t in the wiring between the sensor and
the input plug. Determine cause and rectify. Refer to Appendix II for a
typical 10K? thermistor output curve.
2. Is the outside air sensor in the direct sunlight?
– Yes. Provide shade for the sensor so the direct sun does not affect it.
– No. Contact factory.
SOLUTION: If setpoints are misadjusted
1. Is the Econmzr Setpoint set for 80°F?
– Yes. The outside air temperature is over 80°F and there should be no need
– No. Increase the ECONMZR SP setpoint. See Heating Mode - Energy
FAULT CODE:Insufficient OA
PROBLEM: The controller has turned off the burner enable output because the
percentage of outside air has dropped below 20% for more than five minutes,
and the unit is in the Heating mode.
SOLUTION:If heat is desired
1. Are the outside air hood filters or bird screen or any associated outside air
ductwork obstructed?
– Yes. Clear obstruction or change filters.
– No. Continue.
2. Are the outside air and return air dampers and actuators working properly?
– Yes. Continue.
for heat. If this is not the case, contact factory.
Savings Mode 3 section of this manual for more information.
– No. Make necessary adjustments and force the unit to recalibrate. See
Calibrate in the Resets Section of this manual.
3. Are the flow measuring station pitot tubes and pressure tubing clear?
– Yes. Continue.
– No. Clean and force the unit to recalibrate. See Calibrate in the Resets
Section of this manual.
40 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Diagnostics
4. Do the dampers track with a change in the %OA setpoint? The dampers
utilized on the unit are not line ar with respect to air flow and openness, and as
such, the proportion of outside air damper movement will not be exactly
equal to the %OA setpoint. However, at 20% OA the dampers should be
approximately ½" open.
– Yes. Continue.
– No. Check the damper motor and linkage connections. When 24VAC is
powering the damper actuator and the control signal is 0VDC, the outside
air damper should be close to a "rattle tight" position and the return air
damper should be open. If the 24VAC power is removed, the actuator will
draw the outside air damper tightly closed and the return air damper
tightly open. When 24VAC is powering the damper actuator and the
control signal is 10VDC, the outside air damper should be fully open and
the return air damper should be closed.
5. Is there approximately 24VAC at the COM and EXC terminals on the airflow
station pressure transducer?
– Yes. Continue.
– No. Is there 120VAC on the primary side of the low voltage transformer
and 24VAC volt at the transformer secondary?
– Yes. There is an open in the wiring between the transformer and the
transducer. Locate the wiring problem and rectify.
– No. If there is 120VAC on the primary and 0VAC on the secondary,
replace the transformer. If there is 0VAC on the primary, there is an
open in the wiring supplying power to the transformer. Locate the
wiring problem and rectify.
6. Remove both of the plastic t ubes from the airflow stat ion pressure transducer
and gently blow into the HIGH side port. Ca ution: The transducer is extremel y
sensitive. Blowing too hard into the sensing tube may damage the
transducer. Is there approximately 5VDC across the COM and OUT terminals
of the pressure transducer?
– Yes. Continue.
– No. The pressure transducer is defective. Replace it.
7. Remove both of t he plastic tubes from t he airflow station pressure t ransducer
and gently blow into the HIGH side port. Ca ution: The transducer is extremel y
sensitive. Blowing too hard into the sensing tube may damage the
transducer. Is there appr oximately 5VDC across the contro ller input terminals
that are connected to the transducer?
– Yes. The re is a problem wit h the controller. Replace it.
– No. There is an open in the wiring between these pressure tr ansducer and
the AdaptAire controller terminals. Locate and rectify.
SOLUTION:If less outside air is desired
1. Is heat required?
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 41
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Diagnostics
– Yes. The AdaptAire control system must be in the Heating mode. In this
mode the smallest allowable amount of outside air is 20%. Verify the
system is in the Heating mode and the MIN VENT SP is set for 20%. See
Heating/Cooling Mode and Minimum Ventilation Sections of this manual.
– No. Continue.
2. Is cooling or ventilation required?
– Yes. The AdaptAire control system must be in the Ventilation/Cooling
mode. In this mode the smallest allowable amount of outside air is 0%.
Verify the system is in the Cooling mode and the MIN VENT SP is set for
the desired percent of outside air. See Heating/Ventilating/Cooling Mode
and Minimum Ventilation Sections of this manual.
– No. Contact factory.
42 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Menu Selection
Menu Selection Tree for BACview
This section will assist the user in navigating the menu fu nctions of the control
program. For convenience Hotkeys are provided to allow the user to jump
directly to a specific menu heading. Simply press and hold the FN key. While
holding the FN key, press the number key of the desired menu, and it will appear.
The number key associated with the menu heading is shown below. Links to
other menu headings are also available by pressing one of the 4 keys located
directly below the screen.
Figure 4. Menu selection tree for BACview
UNIT MODES HOTKEY - 2
Auto/Off/Man
•Auto
•Off
•Manual
Damper Mode
•MA Temp Ctrl
• Bldg Pressure Ctrl
•Manual Ctrl
Home
Setpoints
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 43
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Menu Selection
Status
Alarm
SET POINTS HOTKEY - 3
Htg Occupied °F range 55-90
Htg Setback °F range 40-80
Htg Min DA °F range 40-130
Htg Max DA °F range 55-130
Clg Occupied °F range 61-96
Clg Setback °F range 75-130
Clg Min DA °F range 40-130
Clg Max DA °F range 55-130
Man Vent %OA range 0-100
Mixed Air °F range 30-80
Bldg Prs "WC range -0.05-+0.05
Min Vent % range 0-100
Economizer Temp °F range 40-80
Freeze Stat °F range 35-80
Home
Status
Alarm
Resets
44 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Menu Selection
STATUS MENU HOTKEY - 4
Note: The Status Menu always displays the current status of the fan, burner and
Room Temp °F
OA Temp °F
DA Temp °F
MA Temp °F
Outside Air %
Bldg Pres "wc
Fan Cycles
Fan Hours
Bnr Cycles
Bnr Hours
Clg Cycles
Clg Hours
Damper VDC
Burner VCD
Safety Ckt Open/Closed
ActEQ Temp °F
MaxEQ Temp °F
User In
User Out %
Home
Alarm
Resets
Schedules
cooling.
ALARM HOTKEY - 1
Alarm History (64 Most Recent)
• Active Critical Alarms
• Active Non-Critical Alarms
• Alarms Return-To-Normal
•Previous
RESETS HOTKEY - 6
Alarm
Burner Reset
Fan Coun t
Cooling Reset
Calibrate
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 45
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Menu Selection
Home
Schedules
Clock Set
Help
SCHEDULES HOTKEY- 7
Daily
– Schedule1 (typical 1 through 4)
–Use — yes/no
– Start Time — hr:min
– Stop Time— hr:min
– DAYS — SUN, MON, TUE, WED, THU, FRI, SAT
– Previous
– Next
–Home
– Logout
Holiday
– Holiday1 (typical 1 through 12)
– Use yes/no
– Start Time hr:min
– Stop Time hr:min
– Month (1-12)
– Day(1-31)
–Previous
–Next
–Home
– Logout
Override
– Override1 (typical 1 through 2)
– Use yes/no
– Start Time hr:min
– Stop Time hr:min
– Month (1-12)
– Day (1-31)
–Previous
–Next
–Home
– Logout
USER CONFIGURABLE OUTPUT HOTKEY - 8
PID Select — Direct Acting/Reverse Acting
High Input Value
46 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Menu Selection
Low Output Value
User Control Setpoint
Maximum User Setpoint
Minimum User Setpoint
Previous
Home
Setpoints
Help
CLOCKSET HOTKEY - 0
Time hh:mm:ss
Date dd-mm-yy
HELP HOTKEY - 5
Previous
DST
– Enable No/Yes
– Sou Hem No/Yes
– 06Beg Apr /02
– 06End Oct /29
– 07Beg Apr /01
– 07End Oct /28
– 08Beg Apr /06
– 08End Oct /26
–09Beg Apr /05
– 09En d Oct /25
Fan Sequence
Room Sensor
Heating Sequence
Cooling Sequence
Calibrate Sequence
Schedule Sequence
Previous
Home
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 47
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Menu Selection
Alarm
Fuel Select
FUEL SELECT HOTKEY - 9
Fuel Type Natural Gas/Propane
Login
Home
Previous
Unit Modes
48 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Thermostat Output Curve
Typical 10,000 Ohm Thermistor Output Curve
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
110000
120000
130000
140000
150000
160000
170000
180000
-22 -4 14 32 41 50 59 68 77 86 95 104 113 122 131 140 149
Temperature in Degrees F
Resistance (Ohms)
Typical 10,000 Ohm Thermistor Output Curve
0
5000
10000
15000
20000
25000
30000
32 41 50 59 68 77 86 95 104
Temperature in Degrees F
Resistance (Ohms)
10 K Ohms Thermistor Output Curve
Figure 5. Uses FG.figure#
Figure 6. Uses FG.figure#
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 49
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Airflow Station Layout
Figure 7. Airflow station layout
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 50
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I/O Zone 583 Controller Specifications
POWER REQUIREMENTS. 24VAC ± 10%, 20VA
NETWORK COMMUNICATION
BACnet (native), Modbus RTU, or N2 bus at up to 76.8K baud or 156K baud over
ARCnet. LonWorks using plug-in communications board.
USER INTERFACE
MDT: modulating discharge temperature control with manually adjusted
potentiometer at remote panel.
MRT: modulating room temperature control with manually adjusted
potentiometer at remote panel.
MRT-Pro: modulating room temperature control with intelligent room
thermostat.
MRT-Expert: modulating room temperature control with intelligent room sensor
and BACview LCD control panel.
MEMORY
1M bytes of flash memory and 512K
bytes of non-volatile battery-backed
RAM
REALTIME CLOCK
Battery-backed to keep time in event of power failure.
TEMPERATURE OPERATING RANGE
0°F to 130°F, 10% to 95% RH non-condensing
INPUTS/OUTPUTS
8 Universal Inputs
• Inputs 1 & 2
– Dry, thermistor, 0-5VDC
• Inputs 3 - 6
–oDry, thermistor
• Inputs 7 & 8
– 1k -10k pot
• 5 Digital Outputs
– Relay contacts rated at 1A Resistive @ 24VAC
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 51
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I/O Zone 583 Controller Specifications
– LED indication
• 3 Analog Outputs
–0 - 10 VDC
OUTPUT ASSIGNMENTS - ANALOG
AO1 Burner firing rate (to signal conditioner) 0 - 10 VDC
AO2 RA or Mixing Damper Control/ User Configured 0 - 10VDC
AO3 Unassigned
OUTPUT ASSIGNMENTS - DIGITAL
DO1 Unit Enable
DO2 Burner Enable
DO3 Cooling Enable
DO4 Alarm
DO5 Pilot to Main Flame Sensor Changeover Switch
INPUT ASSIGNMENTS - UNIVERSAL
IN1 Pressure Transducer for Building Pressure Control or User Configured
IN2 Pressure Transducer for Flow Station
IN3 Multiplexed
• 100% Outside Air/100% Output
• F lam e Failure Alarm
• Safety Circuit Stat u s
• Manual/Mixed Air Dmpr Control
IN4 Multiplexed
• Auxiliary Unit Enable
• Clogged Filter
• Fan Status
• Burner Status
IN5 Outside Air sensor
IN6 Discharge Air sensor
IN7 Unit Enable/Remote Setpoint
IN8 Damper Control
RNET MRT-Pro or Room Air sensor
52 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Typical Wiring Schematic
Figure 8. Non-recirculating with evap DFOA and DFIA model diagram
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 53
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Typical Wiring Schematic
Figure 9. Non-recirculating with evap DFOA and DFIA model diagram
54 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Typical Wiring Schematic
Figure 10. Recirculating DFOA and DFIA model diagrams
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 55
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Typical Wiring Schematic
Figure 11. Recirculating DFOA and DFIA model diagram
56 Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN
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Typical Wiring Schematic
MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 57
Page 58
Tran e
A business of American Standard Companies
www.trane.com
For more information, contact your local Trane
office or e-mail us at comfort@trane.com
Literature Order Number MUA-SVP01A-EN
Date January 2007
Supersedes New
Trane has a policy of continuous product and product data improvement and reserves the right to
change design and specifications without notice.
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