Controls Programming Guide Direct-Fired Indoor and Outdoor Make-Up Air Units DFIA DFOA January 2007 MUA-SVP01A-EN
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.
NETWORKING AdaptAire is adaptable to a variety of different network architectures and protocols. Each controller has built-in protocol translation and can be configured 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.
Table 1. Default settings (continued) ITEM 4 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.
Contents NETWORKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ADAPTAIRE DEFAULT SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Unit Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 MDT Controls: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 MRT Controls: . . . . . . . . . . . . . . . . . . .
Contents ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOTKEY - 145 RESETS HOTKEY - 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 SCHEDULES HOTKEY- 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 USER CONFIGURABLE OUTPUT HOTKEY - 8 . . . . . . . . . . . . . . . . . . . . . . . . . 46 CLOCKSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 We
Unit Operating Modes MRT Controls: 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 switches. 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.
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 functions that control the unit operation. They are a time clock, heating and cooling night setbacks, and a signal from an external source.
Unit Operating Modes to be "off" and the Cooling Night Setback function turns 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.
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 schedule sets the Off times for holidays and other shutdown periods. The override schedule can be programmed for up to 2 separate On/Off events with any combination of days.
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.
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.
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.
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.
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 setpoint 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.
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.
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.
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.
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.
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 value is the lesser of the PID utput or the override output. See the following example.
Functions Figure 2. Direct acting Max User SP 80ºF 100% override scaler 0% 75ºF User Ctrl SP 75ºF PID 0-100% 75ºF > = < 0-100% Output 100% override scaler Min User SP 70ºF 0% REVERSE ACTING The controller output AO-1 is modulated by a PID loop from 0% to 100% 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.
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 High Input Val Low Input Val User Ctrl SP Max User SP Min User SP Reverse (as input increases output decreases) .10 -0.10 0.03 0.05 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.
Functions Unit Resets 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.
Functions input. A switch is used in conjunction with each resistor. When a switch 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 each different resistance with a specific function.
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.
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 the alarm and recheck when the outside air temperature is much cooler. – Yes. This signal is fed to the gas valve modulation signal conditioner.
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 from the AdaptAire controller. Did the display change to -40°F or less? – No.
Diagnostics – Yes. This signal is fed to the signal conditioner. Disconnect the wires from the signal conditioner's input signal terminals 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 wire from the controller's ground terminal is connected to the signal conditioner's ground terminal. – Yes.
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. Verify the inlet gas pressure is as specified on the gas piping diagram. The low gas pressure switch setpoint should not be adjusted. The inlet gas pressure must remain as specified when unit fires at full input.
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.
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. Determine cause of valve failure and rectify. – Yes. Continue. 3. Is the flame relay energized? – 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.
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.
Diagnostics – Yes. There is a short in the wiring between these terminals. Determine 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.
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.
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 approximately the midpoint between the high and low airflow switch setpoints? – No.
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 recheck. Replace the switch if contacts do not open. – Yes. Continue. 6.
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 from the AdaptAire controller. Did the display change to -40°F or less? – No. There is a short in the controller input.
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.
Diagnostics SOLUTION: If OAT, RoomT or DAT are such that heat is required 1. Is the outside air temperature (OA Temp), displayed 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.
Diagnostics 4. Do the dampers track with a change in the %OA setpoint? The dampers utilized on the unit are not linear with respect to airflow 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.
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%.
Menu Selection Menu Selection Tree for BACview This section will assist the user in navigating the menu functions 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.
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.
Menu Selection STATUS MENU HOTKEY - 4 Note: The Status Menu always displays the current status of the fan, burner and cooling.
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) – Da
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 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 HELP HOTKEY - 5 Fan Sequence Room Sensor Heating Sequence Cooling Sequence Calibrate Sequence Schedule Sequence Previous Home MUA-SVP01A-EN • Direct-Fired Ind
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
Thermostat Output Curve 10 K Ohms Thermistor Output Curve Figure 5. Uses FG.figure# Resistance (Ohms) Typical 10,000 Ohm Thermistor Output Curve 180000 170000 160000 150000 140000 130000 120000 110000 100000 90000 80000 70000 60000 50000 40000 30000 20000 10000 0 -22 -4 14 32 41 50 59 68 77 86 95 104 113 122 131 140 149 Temperature in Degrees F Figure 6. Uses FG.
Airflow Station Layout Figure 7.
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.
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
Typical Wiring Schematic Figure 8.
Typical Wiring Schematic Figure 9.
Typical Wiring Schematic Figure 10.
Typical Wiring Schematic Figure 11.
Typical Wiring Schematic MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 57
Trane 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.
