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AireLogic Digital Control System User Manual

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1. AireLogic Digital Control System User Manual Rev 04 11 13 Table of Contents DVERVIEW RAO Ce hi 6 NETWORKING oer eee OM e Rea 8 AIRELOGIC DEFAULT SETTINGS 12 sse 8 UNIT OPERATING 9 a aaa 9 UNIT OEE MODE ern err Pr ea unt FO TRO ER n assy E b rd D eta Ee 9 UNITE MANUAL MODE retra np Re tH UP REBEL 10 UNIT AUTO MODE RE abana 10 IVD COONS eMe tua tiui celsa aay 10 MODE ett eto Igea NU tenir etre Mice Atel edd Sones 10 UNIT MANUAL ene ouem 10 UNEIFAUTO MODE often itr ee e ivt tte ea et ege pete 10 MRT Expert CORIFOIS eei dte ORE t E Rr R d que Edd Din 10 UNIT OQEE MODE erre re ripe i p eiii e ep eti pete e i pe ip den eet t pell Pe 10 UNIT MANUAL MODE rnt t Be te e et don eger o m a ed en ede ritus 11 UNIT AUTO MODE ve fe nes een ne ee ded oo e endure 11 Scheduling Time Clock 11 Heating Night Setback REESE PEE heri bue 14 Cooling Night Setback 14 Auxiliary Unit Enable 5 ti eas ete ttu e RR ba dana ERR OR 14 MD TEXDSIPOOBIIOISA erit i ate Res e ete 15 UNIT
2. The output impedance must not exceed 10KQ The input impedance of the controller is 1MQ 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 2 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 Direct Acting 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 Control setpoint the output could increase from 0 to 100 as the input variable increases from the User Control setpoint to the Max User setpoint In this situation the output value is the greater of t
3. E 34 Diagnostics Critical Alarm Codes 1 1 sse 34 ALARM CODE Low Discharge Temperature sse 34 SOLUTION If burner was operating prior to shutdown check prior alarm log 34 SOLUTION If burner was not operating prior to shutdown check prior alarm log 35 ALARM CODE Safety Circuit Open esses entente tentent 37 SOLUTION If fan is not running check prior alarm log 0 eee eee eesceeecesecesecsecnaecaeecaeeeseseaeeneeeseeees 37 SOLUTION If fan is running check prior alarm 109 37 ALARM CODE Burner STANTS aiti am dd md deae eg trita eisdem 38 SOLUTION Inspect burner control circuit and burner 38 ALARM CODE Burner Malis RH asia e a NE e 39 SOLUTION Inspect burner control circuit This alarm has the potential to be a very serious problem Close the manual gas valves immediately if the fan is not running sse 39 ALARM CODE Flamedallife et ro adeo eta eeiam odes 40 SOLUTION Investigate flame relay un cesses teen Ue rete te otto geo 40 Diagnostics Non Critical Alarm Codes 1 1 1 2 2 esee 40 ALARM CODE Unit OFF ANON uis iata d etit erbe lr iei 40 SOLUTION If fanas Tunning s eo eren 40 SOLUTION If fanis NOL running eno D po Rb elis pta elei aeu 41 ALARM COD
4. a TS O3 LED 122 ER Pareto BURNER CONTROL s vo la 206 RE 34 edad 205 RE 28 ovo 204 SC REST rel SHIELDED CABLE COMPONENT IDENTIFICATION Do Not Ground Transformer Usi Shielded Signal Conductors TC 0 Es SH He ie Only N O NGHT FL 02 HIGH TEMPERATURE LIMIT SWITCH zi TR 05 24 ve 2 bo 30 FL 06 SUPPLY AIR FIRE STAT OPTIONAL FL 05 RETURN AIR FIRE STAT 209 202 Te DDC Control 0 10 vdc Input Fu 0s CONTROL CIRCUIT TRANSFORMER FUSE KEYPAD DISPLAY MODULE OPTIONAL BURNER ON HOLE REMOTE FAN ON LIGHT REMOTE v6 07 SW 19 FL 06 po Pol ke v CUSTOMER EXHAUST Am OR OK FAN INTERLOCK C TO LINE BLOCK OR OPTIONAL JUMPER IF NOT USED DISCONNECT COOLING ON LIGHT REMOTE 103 24 Fu 09 SWITCH TR 01 CLOGGED FILTER LIGHT REMOTE hoq UNIT ENABLE POTENTIOMETER OPTIONAL MAIN SUPPLY FAN MOTOR DANPER MOTOR 5 11 PS 10 FL 02 5 04 5 07 114 115 116 TL Lore LOW GAS PRESSURE SWITCH O
5. Minimum Ventilation Setpoint 25 Outside Air 25 100 75 25 direct fired heaters Unit Model As specified IFL20 IFL40 IFL60 OTHER User PID Select Direct Acting DIRECT REVERSE High Input Value 0 00 9999 99 99999 99 Low Input Value 0 00 9999 99 99999 99 User Control Setpoint 0 00 9999 99 99999 99 Maximum User Setpoint 0 00 9999 99 99999 99 Minimum User Setpoint 0 00 9999 99 99999 99 UNIT OPERATING MODES There are three different modes that control the supply fan and unit operation e Off e Manual e Auto There are also four different methods for controlling the operating modes e a remote control panel with one or two rotating adjustment knobs MRT and MDT controls e an intelligent room sensor and BACview panel with LCD display MRT Expert controls e an BACview panel with LCD display MDT Expert controls e any of the these controls with an internet based WebCTRL interface or other 3 party building automation system MHT Controls Modulating room temperature MRT control is the most basic AireLogic 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 AireLogic units configured for MRT or MRT Expert controls will have a fixed discharge temperature of 70 F if the room temperature sensor is disconnected or otherwise fails to communicate with the unit c
6. er 23 COOLING INTERLOCK EXHAUST INTERLOCK RELAY RE 78 RE 35 H 208 230 460 575 NOLT s A a ne 3 PHASE HERTZ 3 9 3 24 ST 01 5 WIRE MAIN GAS VALVE z AUXILIARY GAS VALVE MODULATING GAS VALVE 60 MT O1 34 EXHAUST FAN INTERLOCK 36 31 32 ST 01 H H 3 PILOT DUTY RATED
7. Additionally on all controls systems except the MDT and MDT EXPERT the control system modulates the burner to maintain the supply air temperature within a defined operating window This window defines the maximum and minimum discharge temperatures 19 To change the desired minimum supply or discharge air temperature scroll through the SETPOINTS menu tree locate the MIN DA Setpoint and enter a new temperature This temperature 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 Setpoint The allowable temperature range is 40 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 AireLogic DDC system can accommodate three distinct types of recirculating direct fired units those that return air before the burner and employ a special airflow station those that return air
8. 44 7 Remove both of the plastic tubes from the airflow station pressure transducer and gently blow into the HIGH side port Caution The transducer is extremely sensitive Blowing too hard into the sensing tube may damage the transducer Is there approximately 5VDC across the controller input terminals that are connected to the transducer a Yes There is a problem with the controller Replace it b No There is an open in the wiring between these pressure transducer and the AireLogic controller terminals Locate and rectify SOLUTION If less outside air is desired 1 Is heat required a Yes The AireLogic 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 b No Continue 2 Is cooling or ventilation required a Yes The AireLogic 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 b No Contact factory ALARM CODE Invalid Damper Control Mode PROBLEM The user has selected Mixed Air Temperature control mode for damper operation and the unit is configured for MDT
9. AIRFLOW STATION SHEET METAL STRIP L EXTERIOR INSULATION FIELD PROVIDED WHEN MOUNTED OUTDOORS 54 Appendix IIl POWER REQUIREMENTS 24V AC x 10 20VA NETWORK COMMUNICATION BACnet ARCNET and MS TP Modbus RTU or N2 bus at up to 76 8K baud or 156K baud over ARCnet LonWorks and Ethernet using plug in communications board USER INTERFACE MDT modulating discharge temperature control with manually adjusted potentiometer at remote control panel MRT modulating room temperature control with manually adjusted potentiometer at remote control panel MRT Expert modulating room temperature control with intelligent room sensor and BACview LCD control panel MDT Expert modulating discharge temperature control with 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 O F to 130 F 10 to 95 RH non condensing INPUTS OUTPUTS 8 Universal Inputs e Inputs 1 amp 2 o Dry thermistor 0 5VDC e Inputs3 6 o Dry thermistor e Inputs 7 amp 8 55 I O Zone 583 Controller Specifications o 1 10 pot 5 Digital Outputs e Relay contacts rated at 1A Resistive 9 24VAC e LED indication 3 Analog Outputs e 0 10 VDC OUTPUT ASSIGNMENTS ANALOG AOI Burner gas firing rate 0 10 VDC 2 RA or Mixing Damper Control User Configured 0 10VDC AO3 Bu
10. Previous Home Setpoints Help UNIT SETUP HOTKEY 9 Access to the Unit Setup page requires the Admin Password Changes to the Unit Setup page after the unit leaves the factory can adversely affect unit operation in the field Do not make changes to the parameters on the Unit Setup page without first contacting the factory Brand Applied Air Temprite Sterling Trane LJ Wing Fuel Type Natural Gas Propane Duct Furnace Size IFD 160 IFD 320 IFD 480 Other Control System MRT modulating room temperature MDT modulating discharge temp 52 Appendix 1 10KQ Thermistor Output Curve 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 Resistance Ohms 86 95 104 113 122 131 140 149 Temperature in Degrees F Typical 10 000 Ohm Thermistor Output Curve Resistance Ohms 32 41 50 59 68 77 86 95 Temperature in Degrees F 53 Appendix Il Airflow Station Layout AIRFLOW STATION LAYOUT NOTE RUN TUBE CONNECTIONS HEATER TO TRANSDUCER 15 IN CASING UNIT CONTROL ENCLOSURE LOW PRESSURE HIGH PRESSURE RA DAMPER TUBE CONNECTION TUBE CONNECTION __ TOTAL PRESSURE SENSING TUBE STATIC PRESSURE SENSING TUBE AIR FLOW BULLET AMPLIFIER WING
11. Expert and MDT Expert Controls eese nne 25 Mixed Air Temperature cama ands ONG AS ER or 26 MRT Control aee eco et ek I LI PH orat eoe tuts Celtic DESEE etel inserire tin 26 MRT5Expert Control Sotto remet lee ote e e Ente heit te Ete eri 26 MDT and MDT Expert Kosa EE COOP trennen rene entrent 26 Building Pressure MOOB s scis raodo et ebat LU S 26 MRT and MDT Controls n nn Ee rene p PIERII DRE ERU REDE ER 26 MRT Expert and MDT Expert Controls pente ttp eti te e Ree Pe RD er 26 100 Outside iia a ut e ag o ce ted ee La d odas 27 Minimum Ventilation elei A E de da dre ata 27 Freezestat o occae aen as Ades ansa dide ai qui tid Geta secus detulit 27 Clogged FHTOE c E Em cui aat 27 User Configured PID Control eee 27 Direct PCH ING Goes a its 28 Reverse Acting mE 29 Unit Resets ee aaa 31 ALARM RM 31 CALIBRATE i e iit ele UE E anges E R 32 tuse ente deste dep ee eU a M AM OAM 32 HEATING COUNT SOE i 32 COOLING COUN Tiirinen e e 33 Multiplexed Inputs e tmc ta edP iR 33 CLOCK Set ooo erg etie tance pecu aed
12. However an alarm will regenerate if the alarm condition that triggered it is 3l still present after power is restored no matter which method was used to reset the alarms For example if the Room Sensor Failure alarm is active when the alarms are reset but the unit is still configured for MRT control and the room sensor is disconnected the Room Sensor Failure alarm will regenerate To reset an alarm on an MRT Expert or MDT Expert system 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 See the Menu Selection Tree for BACview section of this manual for more information about navigating the BACview menus Always change the Alarm Reset parameter to OFF after resetting the alarms If the Alarms Reset parameter was left in the ON state continuously the alarms can still trigger on alarm conditions however to reset the alarms from this state you must move change the Alarm Reset parameter to OFF then ON then OFF again Otherwise the alarms will not reset and you will not be alerted if an alarm that was previously triggered happens to trigger again during the period the alarm remained active A history of alar
13. Status e Alarm SETPOINTS HOTKEY 3 Htg Occupied F range 40 130 Htg Setback F range 40 130 e Htg Min DA F range 40 130 e Htg Max DA F range 40 130 e Clg Occupied F range 40 130 e Clg Setback F range 40 130 e Clg Min DA F range 40 130 e Clg Max DA F range 40 130 e Man Vent OA range 0 100 e Mixed Air F range 30 90 e Bldg Pres WC range 0 10 0 10 e Min Vent range 0 100 Htg Economizer Temp F range 40 130 e Clg Economizer Temp E range 40 130 e Freeze Stat F range 35 80 e OA Temp for Htg Clg Changeover F range 40 130 e Htg DA Temp F range 40 130 e Clg DA Temp F range 40 130 e Home e Status e Alarm e Resets STATUS MENU HOTKEY 4 The Status Menu always displays the current status of the fan burner and cooling e Room Temp F e OA or Inlet Temp F e DA Temp F e MA Temp F e Outside Air e Bldg Pres WC e Energy Save Mode e Fan Cycles e Fan Hours e Bnr Cycles e Bnr Hours e Clg Cycles e Clg Hours e Damper VDC e Burner VDC e Burner Gas VDC 49 e Burner Air VDC e Safety Ckt Open Closed e ActEQ Temp F e MaxEQ Temp F e Home e Alarm e Resets e Help ALARM HOTKEY 1 e Module Event History 100 Most Recent Active Alarms Active Alarms Returned To Normal Manually Cleared Previous RESETS 6 e Alarm e Burner Reset Fan Count Cooling Reset Calibrate Home Schedules Clock Set Help SCHEDULES HOTKEY 7 e 24 hr O
14. 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 rate be maintained to dilute these emissions AireLogic 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 AireLogic system accurately measures the ratio of outside and return air calculates the allowable equivalent temperature rise and automatically limits the burners firing rate This insures 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 equivalent temperature rise The maximum allowable equivalent temperature rise for 20 outside air is 48 9 F The maximum allowable equivalent temperature rise increases 1 22 F for each 1 increase in outside air AireLogic units that recirculate air before the burner and do
15. change to 40 F or less 1 No There is a short in the controller input Replace the controller 2 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 10KQ See thermistor output curve for other temperatures If it is not shorted there is a short in the wiring between the sensor and the input plug Determine cause and rectify Refer to Appendix I for a typical 10KQ thermistor output curve b No Continue 2 Is the discharge air temperature DA Temp displayed on the BACview remote reading 40 F or less a 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 1 No There is an open in the controller input Replace the controller 2 Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is open replace the sensor At 77 the resistance should be 10 See thermistor output curve for other temperatures If it is not open there is a break in the wiring between the sensor and the input plug Determine cause and rectify b No Continue 34 3 Reset the alarm Check and note the DC voltage at output for the gas valve modulation Set the Heating Setpoint for 130 F Set the MAX DAT and MIN DAT Setpoints for 130 F Did the Burner VDC displayed on the BACview remote increase a No Unless the outside air temp
16. 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 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 0 10 Low Input Val 0 10 User Ctrl SP 0 03 Max User SP 0 05 Min User SP 0 00 Max User SP 05 096 Input 03 override scaler 03 100 03 PID 0 100 03 0 User Ctrl SP 0 100 Output override scaler Input 03 Min User SP 00 100 30 The pressure transducer compares the pressure outside the space to the pressure inside the space and transmits a corresponding signal to the AireLogic controller The controller compares this signal to the desired user control setpoint 0 03 and uses the PID loop to modulate the output from 0 100 0 10Vdc The output is connected to the that changes speed to maintain the specified
17. jumper between terminals 213 and 216 on the main terminal strip MRT 1 Remove the jumper between terminals 213 and 216 on the main terminal strip and connect the unit enable potentiometer to terminals 214 215 and 216 2 Disconnect the BACview remote panel from the local access connection on the front of the unit control module Leave the room sensor connected MDT 1 Remove the jumper between terminals 213 and 216 on the main terminal strip and connect the unit enable potentiometer to terminals 214 215 and Expert 216 2 Change the Control System parameter on Unit Modes screen of BAC view to MDT 3 Disconnect the BACview remote panel from the local access connection on the front of the unit control module MDT Expert 1 Change the Control System parameter on Unit Modes screen of BAC view to MDT MRT 1 Remove the jumper between terminals 213 and 216 on the main terminal strip and connect the unit enable potentiometer to terminals 214 215 and 216 2 Change the Control System parameter on Unit Modes screen of BACview to MRT 3 Disconnect the BACview remote panel from the local access connection on the front of the unit control 4 Order room sensor from the factory and wire it into the four wire Rnet MDT input on the left side of the unit control module MDT Expert 1 Remove the jumper between terminals 213 and 216 on the main terminal strip and connect the unit enable potentiometer to terminals 214 215 a
18. link key corresponding to the Home field on the screen to return to the Home screen The sample schedule is programmed and the units will automatically switch between Occupied and Unoccupied modes based on the daily holiday and override schedules Heating Night Setback The Heating Night Setback function automatically cycles the unit on if the room temperature falls below the Heating Setback temperature setpoint and the unit is scheduled to be off If the unit is scheduled to be and the Heating Setback function turns the unit the unit will be cycled off once the room air temperature has risen 2 above the Heating Setback setpoint The default for this setpoint is 55 F To change the Heating Setback setpoint scroll through the SETPOINTS menu tree locate the Heating Setback setpoint and enter a new temperature The allowable temperature range is 40 F 130 F Cooling Night Setback The Cooling Night Setback function automatically cycles the unit if the room temperature rises above the Cooling Setback temperature setpoint and the unit is scheduled to be off If the unit is scheduled to be off and the Cooling Setback function turns the unit the unit will be cycled off once the room air temperature has fallen 2 below the Cooling Setback setpoint This function toggles digital output DOI The default for this setpoint is 100 F To change the Cooling Setback setpoint scroll through the SETPOINTS
19. place the damper operation in Mixed Air Temperature Mode on and MRT Expert control system 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 the desired temperature The allowable range is 30 F 90 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 minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation MDT and MDT Expert Controls The MDT and MDT Expert control systems do not support mixed air temperature control mode 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 AireLogic 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 MRT and MDT Controls The MRT and MDT control systems do not support building pressure control mode MRT Expert and MDT Expert Controls To place the damper operation in Building Pressure Mode on an MRT Expert or MDT E
20. provided to assist the reader in understanding distinctive terms and phrases These terms and phrases appear in italics LJ Wing s Digital Control System AireLogic is designed to give the user the ultimate in unit performance and operational flexibility adaptability and reliability in a user friendly package The AireLogic DDC system is a standard component on LJ Wing heating and cooling units Because the AireLogic system encompasses a wide variety of unit types not all of the system s capabilities and functions are relevant to all units Where a function is similar but different between recirculating and non recirculating units or direct fired or indirect fired units the function is explained separately AireLogic accepts single or multiple units on the system network Each unit can be provided with a BACview The BACview connects to the unit control module via the Local Access Port see Figure 1 for the location of the Local Access Port The operating parameters for individual units may be input through the BACview A PC may also be connected to the network This allows the user to configure each unit separately or all units can be configured simultaneously A controls contractor can provide assistance in networking Local access port connection for BACview Figure 1 The BACview ships with a cable One end of the cable consists of a pre wired black screw terminal connector while the other end consists of a 5 pin red tipped plu
21. 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 For example when the optional clogged filter switch is closed between the 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 BACview See the table below for a complete list of inputs in the multiplexed circuits and how their open and closed states relate to the resistance in the circuit and the voltage at controller inputs IN 3 and IN 4 RESISTOR VALUE RESISTOR ID SWITCH CLOSED OHMS IN CIRCUIT ZN 583 VOLTS DC 1000 RS1 RS1 2 3 4 0 0 2000 RS2 RS2 3 4 1000 0 30 4020 RS3 RS1 3 4 2000 0 55 8060 RS4 RS3 4 3000 0 76 RS1 2 4 4020 0 95 RS2 4 5020 1 10 RS1 4 6020 1 24 RS4 7020 1 36 RS1 2 3 8060 1 47 RS2 3 9060 1 57 MULTIPLEXED VOLTAGE VALUES RS1 3 10060 1 65 RS3 11060 1 73 RS1 2 12080 1 80 RS2 13080 1 87 RS1 14080 1 92 NONE 15080 1 98 UNPLUGGED NA 3 30 IN 3 JUMPER RS 04 MIXED AIR TEMP RE 56 RS 03 SAFETY CKT STATUS RE 09 RS 02 FLAME FAILURE SW 72 RS 01 100 OA or 100 OUTPUT IN 4 RE 27 RS 04 BURNER STATUS RE 65 RS 03 FAN STATUS RE 12 RS 02 CLOGGED FILTER SW 09 RS 01 AUXILIARY UNIT ENABLE 33 Clock Set The Cl
22. the Rnet port on the left hand side of the controller because it sacrifices the convenience of portability LJ Wing s AireLogic system also includes operational modes such as 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 AireLogic to detect the exact ratio of outside and return air entering the unit Then AireLogic 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 AireLogic diagnostic capabilities insure swift response to abnormal unit conditions An alarm is generated anytime a discrepancy exists between operational parameters and actual unit operation An alarm indication is displayed at the BACview and system PC in text format In the Diagnostics section of this manual is a list of all alarms and possible causes and solutions All of the features of the AireLogic system are designed t
23. the controller program Call factory b No Continue 3 Is controller output contact for the unit enable output closed a Yes Turn off the power to the controller and recheck If contact is still closed the controller output is shorted Replace the controller b No Continue 4 Isthe unit enable relay energized a Yes There is a short or jumper in the wiring Determine cause and rectify b No Continue 5 Is motor starter energized a Yes There is a short or jumper in the wiring Determine cause and rectify b No Continue 6 Is the fan status relay energized a Yes There is a short or jumper in the wiring Determine cause and rectify b No Continue 7 Is the fan status relay s normally open contact closed a Yes Replace relay b No Continue 8 Is there continuity between at the controller between the fan status terminals a Yes There is a short in the wiring between these terminals Determine cause and rectify b No Replace controller 40 SOLUTION If fan is not running 1 Is the fan status relay s normally open contact closed a Yes Replace relay b No Continue 2 Is there approximately 5VDC at both controller terminals used for the fan status a Yes There is a short in the wiring between these terminals Determine cause and rectify b No Replace controller ALARM CODE Unit on Fan off PROBLEM The controller has activated the unit enable output to start the fan but the fan status inpu
24. the outside air damper to a fixed position MRT and MDT Controls To place the damper operation in Manual Mode on an MDT or MRT control system be sure the appropriate terminals in the unit control 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 control 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 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 If the unit served by this control is a direct fired heater that recirculates air after the burner it is designed to provide a minimum of 25 outside air Therefore the damper control knob on the remote control panel has no effect below 25 See Minimum Ventilation MRT Expert and MDT Expert Controls To place the damper operation in Manual Mode on an MRT Expert or MDT Expert control system 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 heater that recirculates air after the burner the unit is desig
25. was 67 F when room sensor was disconnected the displayed room temperature will be 67 F for approximately 5 minutes After this period has elapsed the unit will default to a failsafe mode during which the discharge air temperature will be maintained at 70 F The displayed room temperature on the BACview will be 45 F If the unit control module then loses power any time after the loss of communications and is repowered the room temperature will be displayed as until the communications failure is rectified Is the room sensor wired correctly and securely in the terminal connectors on the back of the room sensor as well as at the Rnet input on the left side of the unit control module a No Correct wiring and securely tighten connections Check to see if the alarm has turned off indicating the problem has been resolved b Yes Internal room sensor failure Replace room sensor Glossary BACview A four line by forty character display used to change setpoints and monitor the unit s operation See BACview Equivalent temperature rise Simply stated this value is the actual temperature rise generated by the unit at any given time More precisely stated it is the quantity of outside air raised to the discharge air temperature plus the quantity of return air raised to the discharge air temperature It is equivalent to the heat actually delivered to the space The purpose for this in the burner control scheme is to limit the bu
26. week of Thanksgiving when the units will be Unoccupied However they will be Occupied each weekday during Thanksgiving week from 8 00 AM until noon while a maintenance crew 11 is in the building The maintenance crew will come in at 5 00 AM on Friday to complete preliminary tasks in preparation for the week We will use this sample schedule as our guide in programming the sample schedule Refer to the Menu Selection Tree for BACview section of this manual for more information about the BACview buttons hotkeys and menus The sample schedule and instructions below are just a guide you may skip the rest of the Scheduling Time Clock section of this manual if you are already comfortable programming daily holiday and override schedules Simply determine when you want the unit to operate on the Occupied and Unoccupied setpoints and set the schedule in the BACview accordingly 1 Use the FN 7 hotkey to jump directly to the Schedules screen of the menu tree While holding the FN key press the 7 key and the Schedules screen will appear The BACview may prompt you for the User password The default password is 0000 2 Navigate to the Daily field and press the Enter button The screen will show a blank daily schedule 3 To enable the Daily schedule set the Use field to Yes The Stat field indicates whether the schedule on that screen is currently active so you may see either ON or OFF in this field Navigate to the Start Time field an
27. 9 STATUS MENU HOTKEY v4 aeos sitet a Spp suele ett bod 49 ALARM SHOVTRE YF cic aesti best b eerte beendet aene bere it 50 RESETS HOTKEY ater inq b a UI GU I REY eth 50 SCHEDULES IBIQ IRE one ere Ra EU edi 50 GEOCKSET HOTKEY tend ter tr e toco qe te 51 HELP HOTKEY Sisena deo Ob tiat Re o Iu diets 51 USER CONFIGURABLE OUTPUT HOTKEY 6 netos tto 52 manm E 53 TORO Thermistor Output GUI ea doses o ex ut DISPO EN 53 Appendix IL ahaa acl an 54 Airflow Station Layout us a to erit is 54 Append t o De ite sha ha Diu reete disce e 55 VO Zone 583 Controller Specifications essere 55 Append De IV soni dul 56 VO Zone 583 Controller Battery 56 Append V oinei antis cut He lo SEO ee Rive exte e Qu 57 Control System 57 Typical Wiring Schematic sse nennen nnns 59 RECIRCULATING WDF MODEL DIAGRAM sess 59 NON RECIRCULATING WDF MODEL DIAGRAM Q 0 ccccccccssessesessesseseesessesseseescseeseesens 60 OVERVIEW A glossary has been
28. E Unit on Fan Offi caccia et 41 SOLUTION If fan motoras running iine prete tete 41 SOLUTION If fan motor is not 41 ALARM CODE Check Airflow Switches eerte tette dentnie endete es 42 SOLUTION If high airflow switch is opening Do not adjust the switch setpoints ssessse 42 SOLUTION If low airflow switch is opening Do not adjust the switch setpoints ssessss 42 ALARM CODE Clogged Filter Switch sse 43 SOLUTION It clogsged filterswitchas closing eti eoe ette RU oed e 43 ALAFIM CODE InsuliGIGnt CM ota uns tt En beu lei t pope de idee ois 44 SOLUTION Ift heat 15 desired eese op ROG OD A GAIA Cave HERD 44 SOLUTION If less outside air 1s desired ten nre e e gre tli 45 ALARM CODE Invalid Damper Control Mode seen 45 SOLUTION If the unit is configured for MRT or MRT Expert controls see 45 SOLUTION If the unit is configured for MDT or MDT Expert controls 45 ALARM CODE Sensor Failure essent 45 SOLUTION lnvestigate Toorm sensor oo gementes renee eee 45 GIS 1 1 A A EIER I ME 46 Menu Selection Tree for BACview 1 271 0 esee eee 47 MODBSTAT sot R Ee Ee 46 UNIEMODES 48 SEIPOINTS HOTKEY 3 nb eb oed a neuen a tts 4
29. F the resistance should be 10KQ See thermistor output curve for other temperatures If it is not shorted there is a short in the wiring between the sensor and the input plug Determine cause and rectify Refer to Appendix I for a typical 10KQ thermistor output curve b No Continue 3 Is the discharge air temperature DA Tempt displayed on the BACview remote reading 40 F or less a 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 1 No There is an open in the controller input Replace the controller 2 Yes Disconnect the discharge air temperature 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 10KQ See thermistor output curve for other temperatures If it is not open there is a break in the wiring between the sensor and the input plug Determine cause and rectify b No Continue 4 Reset the alarm Check and note the DC voltage at controller s analog output for the heating signal Set the Heating Setpoint for 130 F Set MAX DA and HTG MIN DA Setpoints for 130 F Did the Burner VDC displayed on the BACview remote increase a No Unless the outside air temperature is extremely warm 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 tem
30. Mode allows the supply fan to turn on regardless of the Time Clock function 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 two different functions that control the supply fan and unit operation They are a time clock function 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 MDT EXPERT control does not support the night setback functions 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 different schedules available 24 hour continuous operation daily holiday and override The daily schedule can be programmed for up to 4 separate On Off events with any combination of days The daily schedule sets the typical operational 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 The overrid
31. OFF RES A A A de ee ne ds 15 UNIT MANUAL MODE batt RR see EGRE EIEEE A RT te ap dee eee ete 15 UNIT AUTO UR IRR E Hee At Mete OS 15 Scheduling Time Clock EEE 15 Auxiliary Unit Enable see A Rr ed t MS UE EP SENE ERREUR ERR Te 18 Heating Ventilating Cooling Operating 19 Mode ei PER ii entr NC M ee 19 General Burner Controle iicet erc od e eo iro pte hie ree tie tree eerte 19 Recirculating Direct Fired Heaters eese eene trennen eeose vee emet enne tenerent entren trennen 20 Energy Savings Mode 1 Mixing Box Recirculating Units eese nenne 21 Energy Savings Mode 1 Non Recirculating Units esee ener eene en eene 21 Energy Savings Mode 2 Mixing Box Recirculating Direct Fired Units eee 21 Energy Savings Mode RU eren Bene got eaten tiae pe DIRE RE Ed 21 Ventilation ode censos ra atraer dor ditatus e d P RUN 21 GOOMMO OGG He E 24 General Cooling Control x epe e ete Rigen ee 24 Energy Savings Mode4 eee eet E dedi ere Pie Mettre ee dete eee poderes 24 Damper Control Modes ote ENG RR IER EUG I GUN 25 Manual Mode 25 and MDT Control steve caeteri rr etc Pr de cree bte estie eee en Ee PEDE tes eie Dec 25 MRT
32. OW GAS PRESSURE SWITCH OPTIONAL HIGH GAS PRESSURE SWITCH OPTIONAL HIGH VELOCITY SWITCH LOW VELOCITY SWITCH CLOGGED FILTER SWITCH OPTIONAL BUILDING PRESSURE TRANSDUCER OPTIONAL AIRFLOW PRESSURE TRANSDUCER OPTIONAL BURNER RELAY CLOGGED FILTER RELAY OPTIONAL 7 DAY TIME CLOCK OPTIONAL ELECTRONIC RELAY MAIN GAS VALVE RELAY COOLING ENABLE RELAY COOLING INTERLOCK RELAY BURNER ENABLE RELAY SAFTEY CIRCUIT STATUS RELAY UNIT ENABLE RELAY FAN STATUS RELAY EXHAUST INTERLOCKING RELAY OPTIONAL RESISTOR 1K OHM RESISTOR 2K OHM RESISTOR 4 02K OHM RESISTOR 8 06K OHM RESISTOR 10 OHM RE 57 Fe 9 kii 5 11 PS 10 FL 02 PS O4 PS 07 TO THE LATEST PROVISIONS OF NEC RE 274 m ub ts FIELD PURGE sep ict 2 VG O3 WG 02 56 ens 11 110 TIMER LOCATION H H 02 RE 27 112 GEOSG MAIN SUPPLY FAN MOTOR STARTER MAIN DISCONNECT SWITCH ra AUXILIARY UNIT ENABLE BY OTHERS DOOR SWITCH 100 QUTSIDE AIR SWITCH BY OTHERS NIGHT SETBACK THERMOSTAT CONTROL CIRCUIT TRANSFORMER MODULATING VALVE TRANSFORMER LOW VOLTAGE TRANSFRMER OUTSIDE AIR TEMPERATURE SENSOR SPACE TEMPERATURE SENSOR OPTIONAL DISCHARGE AIR TEMPERATURE SENSOR UNIT CONTROL MODULE MAIN GAS VALVE AUXIUARY GAS VAL
33. PTIONAL HIGH GAS PRESSURE SWITCH OPTIONAL HIGH VELOCITY SWITCH Dr ae LOW VELOCITY SWITCH 111 FIELD PURGE 02 UNIT SHALL BE GROUNDED ACCORDING TO THE LATEST PROVISIONS OF NEC 27 k VG G3 VG 02 117 CLOGGED FILTER SMTCH OPTIONAL TIMER 110 BURNER RELAY CLOGGED FILTER RELAY OPTIONAL LOCATION 56 RE 27 7 DAY TIME CLOCK OPTIONAL ELECTRONIC RELAY MAIN GAS VALVE RELAY COOLING ENABLE RELAY COOLING INTERLOCK RELAY BURNER ENABLE RELAY 112 SAFTEY CIRCUIT STATUS RELAY UNIT ENABLE RELAY FAN STATUS RELAY EXHAUST INTERLOCKING RELAY OPTIONAL RESISTOR 1K OHM RESISTOR 2K OHM RESISTOR 4 02K OHM RESISTOR 8 06 OHM RESISTOR 10 OHM MAIN SUPPLY FAN MOTOR STARTER MAIN DISCONNECT SWITCH MT 13 L AUXILIARY UNIT ENABLE DANPER INTERLOCK SWITCH DOOR SWITCH 100 OUTPUT SWITCH BY OTHERS NIGHT SETBACK THERMOSTAT CONTROL CIRCUIT TRANSFORMER MODULATING VALVE TRANSFORMER LOW VOLTAGE TRANSFRMER OUTSIDE AIR TEMPERATURE SENSOR SPACE TEMPERATURE SENSOR OPTIONAL DISCHARGE AIR TEMPERATURE SENSOR UNIT CONTROL MODULE CAUTION OPEN MAIN DISCONNECT SWITCH BEFORE SERVICING EQUIPMENT TO CONTROL CIRCUITS 5 01 SW 18 ST 01 i LoL
34. SW 08 6 85 02 1 85 01 4 SHIELDED CABLE 5 0 RE 12 NODI ONLY of amp or Pasto DAMPER CONTROL BURNER CONTROL RE 34 RE 28 RE 57 gt bow voz x COMPONENT IDENTIFICATION HIGH TEMPERATURE LIMIT SWITCH RETURN AIR FIRE STAT ea SUPPLY AIR FIRE STAT OPTIONAL CONTROL CIRCUIT TRANSFORMER FUSE KEYPAD DISPLAY MODULE OPTIONAL BURNER ON LIGHT REMOTE FAN LIGHT REMOTE COOLING ON LIGHT REMOTE DDC Control 0 10 vdc Input 25 Do Not Ground Transformer Use Only Shielded Signal Conductors NGHT ache Teg 21 Hi TR 05 zy 209 292 120 x uu 24 6 07 CLOGGED FILTER LIGHT REMOTE FL 05 103 50 19 ll TR 04 Fu ge OR OPTIONAL F 24 255 DISCONNECT SWITCH TR 01 s DANPER CONTROL POTENTIOMETER OPTIONAL UNIT ENABLE POTENTIOMETER OPTIONAL 102 UNIT SHALL BE GROUNDED ACCORDING MAIN SUPPLY FAN MOTOR ST O14 DAMPER MOTOR L
35. VE MODULATING GAS VALVE EQUIPMEN i m 3 PH CAUTION OPEN MAIN DISCONNECT SWITCH BEFORE SERVICING 5 01 208 230 460 575 VOLT 2 u TO CONTROL CIRCUITS COOLING INTERLOCK 102 Te DOC 210 Control 9e O A N C R A N O oao fio SHS ST 01 RE 78 23 TO LINE BLOCK EXHAUST INTERLOCK RELAY RE 35 H Ho 36 30 31 i ASE MER M 60 HERTZ 0 B4 3 WIRE ST 01 39 EXHAUST FAN INTERLOCK D 32 ST 01 344 H re PILOT DUTY RATED CUSTOMER EXHAUST FAN INTERLOCK JUMPER IF NOT USED NON RECIRCULATING WDF MODEL DIAGRAM Uc 01 MP 15 01 75 02 CHD HHEI E THs In 82 Gov TART RE S6 ES 85 05 65 04 Bi BAUD hste Ave pad we ASW 72 am RS G2 RS 01 pa AW p ve pad RE 65 2 RS 03 24 emol 5 01 RS 04 pA N Ve ins ASW os 5 6 85 02 65 01 pod Wve Bod Wo RE 12
36. ater than the minimum discharge air temperature setpoint and the room air temperature is 5 F above the room air temperature 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 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 temperature 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 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 Energy Savings Mode 3 Energy Savings Mode 3 will automatically disable the b
37. b No Continue 2 Set Unit Mode to Manual Did fan start a No See the Diagnostic section for Unit On Fan Off b Yes Continue SOLUTION If fan is running check prior alarm log 1 Is the high temperature limit tripped a Yes Determine cause and rectify b No Continue 2 Is the low gas pressure switch closed a 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 37 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 b Yes Continue Is the high gas pressure switch closed a No Verify the firing rate pressure at full input is as specified on the unit rating plate The high gas pressure switch 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 b Yes Continue Is the safety circuit relay energized a No Check for loose wiring and rectify b Yes Continue Is the safety circuit relay s normally open contact closed a No Replace the relay b Yes Continue Is there continuity at the controller between the safety status terminals a No Th
38. building pressure If the building pressure is 0 03 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 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 Unit Resets This section should assist the user in resetting alarms and cycle counters which have been displayed on the BACview ALARM There are two methods that can be used to reset alarms on an MRT or MDT system The first is to remove the green screw terminal connector that has eight screw terminals on the left hand side of the unit control module See Figure 4 below This connector corresponds to IN 1 IN 2 IN 3 IN 4 and their respective grounds The plastic connector can be removed directly from the side of the module without having to disconnect individual wires from the screw terminal connector Leave the connector disconnected for three seconds before plugging it back into the controller Do not leave the connector disconnected for longer than three seconds Remove this connector for 3 seconds to reset alarms Figure 4 The second method is to turn off the unit s main disconnect switch active alarms will be cleared
39. d events with any combination of days The override schedule sets the Occupied times that will override the holiday schedule This scheduling system allows the user to program a diverse array of Occupied Unoccupied operations The AireLogic DDC system has no preset Occupied Unoccupied schedule To set the Occupied Unoccupied times of the unit scroll through the SCHEDULES menu tree and locate the desired Daily Holiday or Override branch Enter the days and times for the unit to run in Occupied mode In the Daily or Override section these times should correspond to the desired Occupied times for the unit s operation In the Holiday section these times should correspond to the desired Unoccupied times for the unit s operation For any schedule to function the Use tab must be set to yes To set the time clock function for 24 hour continuous operation scroll through the menu tree and locate the SCHEDULES page Set the 24 Hr Operation to yes Enter the Daily section of the menu and set the Use tab to yes Finally select the days for 24 hour operation The unit uses the Occupied setpoints in 24 hour continuous operation mode See the CLOCK SET section of this manual for setting the time date and Daylight Savings function The following instructions demonstrate how to set up a sample schedule using the BACview remote An example of a typical schedule would be to have the unit Occupied Monday through Friday from 6 00 AM to 5 00 PM except during the
40. d set the start time for 6 00 AM Be aware that times are programmed in a 24 hour format For example 2 00 PM would be programmed as 14 00 which will show up on the BACview screen as 14 0 4 Navigate to the Stop Time field and set the stop time for 5 00 PM 17 00 in the 24 hour format 5 Navigate to the Days fields making sure the cursor surrounds the first hyphen Press the Enter button and then press the link key that corresponds to INCR on the screen The field will now show MON indicating that this schedule will be active every Monday from 6 00 AM to 5 00 PM Repeat this process for each of the remaining Days fields except for SAT and SUN Your screen should now look like this 6 The week of Thanksgiving for 2012 is from Sunday November 18 to Saturday November 24 We want the unit to operate in Occupied mode each weekday from 8 00 AM to 12 00 PM while the maintenance crew is in the building during that week We will need to set up a few Holiday schedules to accomplish this Since the unit normally runs in the Occupied mode from 6 00 AM to 5 00 PM on weekdays we need to set the Unoccupied periods in the Holiday schedules The Unoccupied period we want to schedule then is from 6 00 AM to 8 00 AM and 12 00 PM to 5 00 PM We will use 10 Holiday schedules to accomplish this two for each weekday 7 Navigate back to the Schedules screen using the FN 7 hotkey Move the cursor to select the Holiday field and pre
41. e Unit Setup page requires the Admin Password Changes to the Unit Setup page after the unit leaves the factory can adversely affect unit operation in the field Do not make changes to the parameters on the Unit Setup page without first contacting the factory The default User Password is 0000 Contact the factory for the Admin password BACview Function key Link keys The following procedure describes how to change an operational parameter of the unit via the BACview In this example we will use the Unit Modes screen to change the unit mode from Off to Manual 1 The Home screen shows contact information on the backlit display From the Home screen press the MODES link key that corresponds to the Unit Modes screen The link keys are located just below the backlit display as shown in the previous figure 47 2 The Unit Modes screen will appear the backlit display The unit ships from the factory with the Auto Off Manual parameter set to Of f To change this parameter to Manual or Auto use the arrow keys to move the cursor so that Off is selected When Of is selected by the cursor it will appear on the screen surrounded by brackets Off 3 Press the ENTER button Off will flash on the screen indicating that this value is now editable Use the link keys corresponding to INCR and DECR to scroll through the available parameter values which are Auto and Manual Set the value of the pa
42. e is an open in the wiring between these terminals Determine cause and rectify b Yes Continue 4 Is the unit enable relay s normally open contact closed 41 a No Replace relay b Yes Continue 5 Is the motor overload relay tripped a Yes Determine cause rectify and reset b No Continue 6 Is the motor starter energized a No There is an open or break in the wiring Determine cause and rectify b Yes Check motor and motor wiring ALARM 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 controller has detected several short momentary openings of the fan status input The momentary openings must occur at least 4 times within 15 seconds This alarm 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 a No Install filters and continue b Yes Continue 2 Does the external static pressure match that listed on the rating plate a No Verify all associated ductwork is installed and continue b Yes Continue 3 Does the fan RPM match that listed on the Spec Sheet a No Correct to reduced fan speed and continue b Yes Continue 4 Are the airflow switches sensing tubes obstructed a Yes Clear a
43. e range is 55 F 90 F The cooling will be disabled when the temperature drops to the Cooling Setpoint 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 40 F 130 F Additionally on all controls systems except the MDT and MDT EXPERT 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 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 CLG MAX DA Setpoint and enter a new temperature This temperature must not be less than the CLG MIN DA Setpoint The allowable temperature range is 40 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 too closely together the condenser may cycle excessively Energy Sav
44. e 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 The AireLogic DDC system has no preset On Off schedule To set the On Off times of the unit scroll through the SCHEDULES menu tree and locate the desired Daily Holiday or Override branch Enter the days and times based on the desired schedule 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 For any schedule to function the Use tab must be set to yes 15 To set the time clock function for 24 hour continuous operation scroll through the menu tree and locate the SCHEDULES page Set the 24 Hr Operation to yes Enter the Daily section of the menu and set the Use tab to yes Finally select the days for 24 hour operation See the CLOCK SET section of this manual for setting the time date and Daylight Savings function The following instructions demonstrate how to set up a sample schedule using the BACview remote 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 week of Thanksgiving when the units will be Off However they will be On each weekday during Thanksgiving week from 8 00 AM until noon while a maintenance crew is in the building The main
45. e to the Stop Time field and set the stop time for 5 00 PM 17 00 in the 24 hour format Navigate to the Days fields making sure the cursor surrounds the first hyphen Press the Enter button and then press the link key that corresponds to INCR on the screen The field will now show MON indicating that this schedule will be active every Monday from 6 00 AM to 5 00 PM Repeat this process for each of the remaining Days fields except for SAT and SUN Your screen should now look like this The week of Thanksgiving for 2012 is from Sunday November 18 to Saturday November 24 We want the unit to be On each weekday from 8 00 AM to 12 00 PM while the maintenance crew is in the building during that week We will need to set up a few Holiday schedules to accomplish this Since the unit is normally On from 6 00 AM to 5 00 PM on weekdays we need to set the Off periods in the Holiday schedules The Off period we want to schedule then is from 6 00 AM to 8 00 AM and 12 00 PM to 5 00 PM We will use 10 Holiday schedules to accomplish this two for each weekday Navigate back to the Schedules screen using the FN 7 hotkey Move the cursor to select the Holiday field and press Enter Set the start time to 6 00 AM and the stop time to 8 00 AM Remember the Holiday schedules represent the period during which the unit is to be Off Set the Month field to 11 November and the Day field to 19 Monday the first weekday that week Your scree
46. e wiring of the multiplexed resistors Determine cause and rectify b No There is an internal short in the controller Replace the controller 43 ALARM 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 This alarm will automatically clear about 5 seconds after the alarm is corrected SOLUTION If heat is desired 1 Are the outside air hood filters or bird screen or any associated outside air ductwork obstructed a Yes Clear obstruction or change filters b No Continue 2 Are the outside air and return air dampers and actuators working properly a Yes Continue b 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 a Yes Continue b 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 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 open a Yes Continue b No Check the damper motor and linkage connections When 24VAC is
47. erature is extremely warm 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 1 Yes There is a problem with the controller program or controller itself Contact the factory 2 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 b 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 1 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 2 Yes Continue Is there 24VAC on the signal conditioner power terminals a No Determine cause and rectify b Yes Continue Is there twice the DC voltage on the signal conditioner s output terminals as there is on the signal conditioner s input terminals a No Replace the signal conditioner b Yes Continue Is the DC voltage on the modulating valve terminals the same as the DC voltage on the signal conditioner s output terminals a No There is a brea
48. ere is an open in the wiring between these terminals Determine cause and rectify b Yes Replace controller ALARM 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 Is there a prior alarm such as Unit On Fan Off Airflow Sw or Safety Circuit a Yes See the Diagnostic section for the previous alarm b No Continue Is the burner enable relay energized a No There is an open in the 24VAC circuit Determine cause and rectify b Yes Continue Is the burner enable relay s normally open contact closed a No Replace relay b Yes Continue 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 b Yes Continue Is the flame relay or ignition module main valve terminal energized No Refer to the Installation Operation and Maintenance Manual for guidance in troubleshooting the flame relay or ignition module b Yes Continue Is the gas valve burner status relay energized 38 a No There is an open in the main valve control circuit Determine cause and rectify b Yes Continue 7 Is the gas valve burner status relay s normally open contact closed a No Replace relay b Yes Continue 8 Is there continuity at the control
49. exed Input sections of this manual for more information User Configured PID Control This function is applicable to units without modulating return air dampers 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 27 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 9999 99 The analog input and output are polarity sensitive and can be configured for different types of inputs See the Typical Wiring and Unit Controller Specification sections of this manual for more information regarding the inputs and outputs The analog input must be connected to IN 2 This input must be configured for either of two different types of input signals 0 5
50. g For MRT and MRT Expert systems plug the pre wired black screw terminal connector into the back of the BACview and plug the 5 pin red tipped plug into the bottom of the room sensor Because the room sensor is hard wired to the controller via the Rnet port on the left hand side of the controller and the BACview is connected to the room sensor via the plug connection on the bottom of the room sensor this creates a communications link between the BACview and the controller without having to directly wire the BACview to the controller It is easy to move the BACview between the location of the room sensor in the space and the unit s location without having to do any additional wiring Simply unplug the BACview from the bottom of the room sensor in the space and take it to where the unit is located Then plug BACview into the Local Access Port on the controller as shown in Figure 1 To go from where the unit is located to the room sensor in the space unplug the BACview from the Local Access Port and take it to the room sensor Then plug the BACview into the bottom of the room sensor For MDT and MDT Expert systems simply plug the BACview into the Local Access Port on the controller as shown in Figure 1 as a room sensor is not provided with these systems If there are multiple units at the jobsite the BACview can easily be unplugged from one unit and plugged into another For this reason it is not recommended to hardwire the BACview into
51. g 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 32 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 input A switch is used in conjunction with each resistor When a
52. gured for either of these control systems General Burner Control In the Heating Mode the burner will modulate to maintain a constant temperature To change the desired heating discharge or room temperature of an MDT or MRT control system rotate the temperature setpoint knob on the remote control panel clockwise to the desired temperature The allowable temperature range is 55 F 90 F AireLogic units configured for MRT or MRT Expert controls will have a fixed discharge temperature of 70 F if the room temperature sensor is disconnected or otherwise fails to communicate with the unit control module 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 40 F 130 F The burner will modulate using a loop to maintain this temperature To change the desired heating discharge temperature of a MDT Expert control system scroll through the SETPOINTS menu tree using the BACview locate the OA for Htg Clg Changeover Setpoint and enter the desired temperature The allowable temperature range is 40 F 130 F Next scroll through the SETPOINTS menu tree using the BACview locate the Discharge Heating Setpoint and enter a new temperature The allowable temperature range is 40 F 130 F The burner will modulate using a PID loop to maintain this temperature
53. he 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 output or the override output See the following example 28 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 50 F 85 F The user would like the supply air temperature to be 75 F but does not want it to drop below 70 F or go above 80 F The parameters entered on the keypad display will be PID Select Direct as input increases output increases High Input Val 85 F Low Input Val 50 F User Ctrl SP 75 User SP 80 F Min User SP 70 F The temperature transducer senses the supply air temperature and sends a corresponding signal to the AireLogic controller The controller compares this signal to the desired user control setpoint 75 F and uses the PJD 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 75 F the output from the controller will be determined b
54. he battery on the controller Check once a month to verify that the charge of the battery is 3 VDC Figure 5 56 Appendix V Control System Field Conversion The unit can be converted to a different control system in the field Locate the unit s current control system in the From column and the new control system in the To column that is in the same row as the current control system Follow the steps outlined in the New column to complete the field conversion NOTE Contact the factory for the BACview Admin password if required and to have the wiring diagram updated when doing a control system field conversion Failure to do so will result in inaccurate documentation that can complicate possible future troubleshooting efforts From To MDT 1 Order a BACview remote panel from the factory and plug it into the local access connection on the front of the unit control module 2 Change the Control System parameter on Unit Modes screen of BAC view to MDT MRT Expert 1 Order a BACview remote panel from the factory and plug it into the local access connection on the front of the unit control module Leave the room sensor connected MRT 2 Disconnect the unit enable potentiometer from terminals 214 215 and 216 and place a jumper between terminals 213 and 216 on the main terminal strip MDT Expert 1 Order a BACview remote panel from the factory and plug it into the local access connecti
55. ings Mode 4 Energy Savings Mode 4 will automatically disable the cooling if the outside air temperature is below the Cooling Economizer setpoint This function is similar to an inlet duct thermostat The cooling will cycle back on if the outside air temperature rises 3 F above the Cooling Economizer setpoint To change the desired cooling economizer temperature scroll through the SETPOINTS menu tree locate the COOLING ECONOMIZER Setpoint and enter a new temperature The default for this setpoint is 55 F The allowable temperature range is 40 F 130 F 24 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 BACview PC Not all damper modes are available on all units The sequence described in the following paragraph overrides manual mixed air temperature and building pressure control modes during the Unoccupied period of Auto mode It does not override the 100 outside air function Outside air dampers will remain in the fully closed position during the Unoccupied period of Auto mode unless a minimum percentage of outside air 2096 or 2596 is required for ventilation as described in the following paragraphs of this section of the manual Manual Mode Manual Mode is the default damper operational mode This will set
56. irculates 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 By physical design direct fired heaters that recirculate air after the burner supply a minimum of 25 outside air Freezestat The Freezestat function automatically cycles the unit off if the supply air temperature drops below the Freezestat setpoint for 3 continuous minutes On all units there is an initial 8 minute delay prior activation 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 80 F Clogged Filter An optional clogged filter switch is required for this function The Clogged Filter function automatically notifies the user of a dirty filter condition A Clogged Filter indication will appear on the BACview 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 Multipl
57. it 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 fan and burner See Heating Ventilating Cooling Modes and Energy Saving Modes of this manual for more information UNIT AUTO MODE The MDT control does not support the time clock night setback or auxiliary unit enable functions MHT Expert Controls The AireLogic MRT Expert modulating room temperature control system provides full information regarding unit operation and allows the user to adjust all operational parameters using the BACview panel See the Menu Selection Tree for BACview section of this manual for more information about navigating the BACview menus AireLogic units configured for MRT or MRT Expert controls will have a fixed discharge temperature of 70 F if the room temperature sensor is disconnected or otherwise fails to communicate with the unit control module 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 AUTO 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 10 UNIT MANUAL MODE Manual Mode allows the supply fan to turn on regardless
58. k in the wiring between the signal conditioner and the modulating valve terminals Determine cause and rectify b Yes The electronics are working to this point Continue Is there sufficient temperature rise for the amount of outside air that is being delivered to the space a 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 outside air that is being delivered to the space 1 No Contact the factory 2 Yes Continue b Yes Continue 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 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 a Yes See the Diagnostic section for the previous alarm b No Continue 35 2 Is the room air Room Temp displayed on the BACview remote reading 150 F or more a Yes The sensor circuit or the sensor itself is shorted Unplug the input jack from the AireLogic controller Did the display change to 40 F or less 1 No There is a short in the controller input Replace the controller 2 Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is shorted replace the sensor At 77
59. ler between the burner status terminals a No There is an open in the wiring between these terminals Determine cause and rectify b Yes Replace controller ALARM 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 alarm has the potential to be a very serious problem Close the manual gas valves immediately if the fan is not running 1 Is the controller s burner enable output LED lit a Yes Close manual gas valves There is a problem with the controller program Contact factory b No Continue 2 Are the main automatic gas shutoff valves energized a No The main automatic gas shutoff valves are leaking Turn off unit and close manual gas valves Determine cause of valve failure and rectify b Yes Continue 3 Is the flame relay energized a No There is a short in the wiring of the gas valves Close manual gas valves Determine cause of short and rectify b Yes Continue 4 Is the burner enable relay energized a Yes There is a short in the wiring of the flame relay Close manual gas valves Determine cause of short and rectify b No Continue 5 Is the burner enable relay s normally open contact closed a Yes Close manual gas valves Replace the relay b No Continue 6 Unplug the input terminals from the input jack Is there continuity at the cont
60. menu tree locate the Cooling Setback setpoint and enter a new temperature The allowable temperature range is 40 F 130 F Auxiliary Unit Enable The Auxiliary Unit Enable function overrides all other Auto Mode functions and automatically cycles the unit into operation 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 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 14 switch exhaust fan interlock or any other dry contact to override the time clock schedule MDT Expert Controls The AireLogic MDT Expert modulating discharge temperature control system provides full information regarding unit operation and allows the user to adjust all operational parameters using the BACview panel See the Menu Selection Tree for BACview section of this manual for more information about navigating the BACview menus 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 AUTO 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 function UNIT MANUAL MODE Manual
61. ms can be viewed on the Alarms screen of the BACview To view the alarms history locate the Alarms page in the BAC view menu tree The alarms history shows active alarms alarms that have returned to normal and manually cleared alarms 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 flashing Repeat this process so the word OFF is displayed and not flashing The calibration has now been initiated and the Calibration function has been rearmed The Calibrate function will occur automatically each day At 3 00 AM a flag is set within the controller This flag instructs the controller to recalibrate the return air flow station immediately if the fan is running or at the next fan start FAN COUNT Fan Count records each fan start 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 flashin
62. n should now look like this 8 Press the link key corresponding to the Next field on the screen This will take you to Holiday Schedule 2 Set the start time for Holiday Schedule 2 to 12 00 PM and the stop time to 5 00 PM Set the Month field to 11 November and the Day field to 19 Monday the first weekday that week Your screen should now look like this Repeat this step for the 20 aq zgd and 23 Tuesday Wednesday Thursday and Friday using Holiday Schedules 3 through 10 then proceed to the next step 9 Since the maintenance crew will be in the building at 5 00 AM on Monday we will need an override schedule to override part of the Holiday schedule we just created Navigate back to the Schedules screen using the FN 7 hotkey Move the cursor to select the Override field and press Enter Set the start time to 5 00 AM and the stop time to 8 00 AM Remember the Override schedules override the Holiday schedules and represent the period during which the unit is to be On Set the Month field to 11 November and the Day field to 19 Monday the first weekday of Thanksgiving week in 2012 Your screen should now look like this 10 Press the link key corresponding to the Home field on the screen to return to the Home screen The sample schedule is programmed and the units will automatically switch between On and Off modes based on the daily holiday and override schedules Auxiliary Unit Enable The Auxiliary Unit Enable f
63. nd 216 2 Disconnect the BACview remote panel from the local access connection on the front of the unit control module MRT Expert 1 Order a room sensor from the factory and wire it into the four wire Rnet input on the left side of the unit control module 2 Change the Control System parameter on Unit Modes screen of BACview to MRT 58 Typical Wiring Schematic RECIRCULATING WDF MODEL DIAGRAM d Note Piping from unit into building for pressure transducer PT 13 is by others High side port tube piped into building and low side port tube piped to atmosphere Note Piping between unit and flow station for transducer PT 15 is by others Tube uc on air entering side of flow station is pipad to 15 high side port and tube on air leaving side piped to low side port 01 TS 02 Ha poer ROI 234 233 232 JUMPER HERE FOR 231 DAMPER CONTROL bye 4 RS 03 H RS 04 Som esto 7 Janse ENI RS 02 RS 0t Eig AN ve pad Ww ASW 72 rentin VOLE RE 65 RS 03 e prd RS 04 TS 01 A
64. nd continue b No Continue 5 Contact factory SOLUTION If low airflow switch is opening Do not adjust the switch setpoints 1 Does low airflow switch open when the burner is off a 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 1 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 2 Yes Continue 2 Are all of the filters dirty a Yes Install clean filters and continue b No Continue 3 Does the external static pressure match that listed on the rating plate 42 a No Verify all associated ductwork is installed as designed and are no obstructions Continue b Yes Continue 4 Does the fan RPM match that listed on the Spec Sheet a No Correct to increased fan speed and continue b Yes Continue 5 Are the airflow switches sensing tubes obstructed a Yes Clear and continue b No Continue 6 Contact factory ALARM CODE Clogged Filter Switch PROBLEM The filter air
65. ned to provide a minimum of 25 outside air 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 25 Mixed Air Temperature Mode The Mixed Air Temperature mode varies the percentages of outside air and return air to maintain a constant mixed air temperature The AireLogic controller computes the mixed air temperature using the outside air and return air temperatures and the ratio of their respective airflows Direct fired units that recirculate after the burner do not have mixed air temperature control MRT Control To place the damper operation in Mixed Air Temperature Mode on an 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 control panel to the desired mixed air temperature The allowable range is 55 F 90 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 minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation MRT Expert Control To
66. ng 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 or outside air temperature rises to the heating setpoint the heating mode will be disabled and the unit will be in the ventilation mode Cooling mode T T Cooling E 2 F of cooling SP mode J M cooling enable M P P R ee R T T 0 U R Ventilation R 2 F of heating SP heating enable i Heatin 8 L mode Heating mode Figure 3 23 Cooling Mode General Cooling Control Depending on the control type the Occupied Cooling Mode allows the cooling to operate as needed and is activated whenever the room or outside air temperature is 2 above the cooling setpoint During the Unoccupied Cooling Mode the cooling is activated whenever the room or outside air temperature is at the cooling setpoint and is deactivated 2 F below the cooling setpoint In the Cooling Mode the cooling output will cycle to maintain a constant room temperature The cooling outputs are protected by an anti cycle timer which has a 3 minute off 3 minute on delay Additionally the fan is required to be running before any cooling outputs are enabled To change the desired cooling temperature of an MDT or MRT control system rotate the temperature setpoint knob on the remote control panel clockwise to the desired temperature The allowable temperatur
67. 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 testing agency but do use the equivalent temperature rise control scheme to limit burner modulation The maximum allowable equivalent temperature rise for 2096 outside air is 48 9 F The maximum allowable equivalent temperature rise increases 1 22 F for each 1 increase in outside air For AireLogic units that recirculate air before the burner and use the MDT or MDT Expert control the maximum burner firing rate is limited by the discharge setpoint or the maximum allowable equivalent temperature rise whichever is less 20 AireLogic 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 These units are not listed by an independent third party testing agency and do not use the equivalent temperature rise control scheme to limit burner modulation In order of lowest to greatest priority the burner modulation parameters 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 mixed air temperature is equal to or gre
68. o provide the user with real time information At any time the user can display all of the operational parameters make changes if necessary and observe the various temperature pressure and damper readings The system s diagnostic capabilities provide the user with up to the minute status reporting BACview remote keypad or WebCTRL internet connection is required for these features NETWORKING AireLogic 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 56 or EIA 485 communication networks See Appendix III for specific controller specifications The AireLogic system can be connected to most existing building automation systems Some systems may require the use of special controllers and network communication devices AIRELOGIC DEFAULT SETTINGS The following is a list of AireLogic DDC controller defaults These are the default operating parameters set at the factory prior to shipment ITEM DEFAULT RANGE Unit Network Address varies 000 100 rotary switches Unit Operating Mode Off Auto Off Manual Control System As specified MRT modulating room temperature control MDT modulating discharge temperature control Time Clock Schedule None 4 Daily 12 Holiday 2 Override schedules Damper Operating Mode As specified Manual Building Pressure Mixed Air Temperatu
69. ock Set function is used to set the current time and date as well as enabling 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 Select DST to enable Daylight Saving Time Daylight Saving Time is the default For your 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 If your area does not subscribe to Daylight Saving Time set the AMOUNT value to 000 Diagnostics Critical Alarm Codes This section should assist the user in troubleshooting critical alarm codes messages that have been displayed on the BAC view These alarms almost always require the operator to correct the condition and reset the alarm before normal unit operation resumes Exceptions to this rule are noted in the alarm problem descriptions that follow ALARM 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 a Yes That sensor circuit or the sensor itself is shorted Unplug the input jack from the AireLogic controller Did the display
70. of the Time Clock or Night Setback functions Heating and cooling functions use the Occupied 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 fan and unit operation They are a time clock function 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 unit s occupied and unoccupied periods There are four different schedules available 24 hour continuous operation daily holiday and override The daily schedule can be programmed for up to 4 separate On Off events with any combination of days The daily schedule sets the typical Occupied Unoccupied times for the unit The holiday schedule can be programmed for up to 12 separate Occupied Unoccupied events with any combination of days The holiday schedule sets the Unoccupied times for holidays and other shutdown periods The override schedule can be programmed for up to 2 separate Occupied Unoccupie
71. on on the front of the unit control module 2 Disconnect the unit enable potentiometer from terminals 214 215 and 216 and place a jumper between terminals 213 and 216 on the main terminal strip 3 Change the Control System parameter on Unit Modes screen of BACview to MDT MRT 1 Order a BACview remote panel and a room sensor from the factory 2 Plug the BACview into the local access connection on the front of the unit control module 3 Wire the room sensor into the four wire Rnet input on the left side of the unit control module 4 Change the Control System parameter on Unit Modes screen of BACview MDT to MRT MRT Expert 1 Order a BACview remote panel and a room sensor from the factory 2 Disconnect the unit enable potentiometer from terminals 214 215 and 216 and place a jumper between terminals 213 and 216 on the main terminal strip 3 Plug the BACview into the local access connection on the front of the unit control module 34 From To MRT Expert continued 4 Wire the room sensor into the four wire Rnet input on the left side of the unit control module 5 Change the Control System parameter on Unit Modes screen of BACview to MRT MDT Expert 1 Order a BACview remote panel from the factory and plug it into the local access connection on the front of the unit control module 2 Disconnect the unit enable potentiometer from terminals 214 215 and 216 and place a
72. ontrol module 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 fan on 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 and enable the fan and burner See Heating Ventilating Cooling Modes and Energy Saving Modes of this manual for more information UNIT AUTO MODE The MRT control does not support the time clock night setback or auxiliary unit enable functions MDT Controls Modulating discharge temperature MDT control is the most basic AireLogic control for discharge temperature The MDT 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 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 fan on light The OFF mode prevents the unit from starting UNIT MANUAL MODE Manual Mode allows the un
73. or MDT Expert control or communications between the room sensor and the unit control module have failed This alarm will automatically clear after the alarm is corrected SOLUTION If the unit is configured for MRT or MRT Expert controls 1 Is the room sensor wired correctly and securely in the terminal connectors located on the back of the room sensor as well as at the Rnet input on the left side of the unit control module a No Correct wiring and securely tighten connections b Yes Internal room sensor failure Replace room sensor SOLUTION If the unit is configured for MDT or MDT Expert controls 1 Select either the Manual or Building Pressure damper control modes Mixed Air Temperature control mode is incompatible with MDT and MDT Expert control systems Mixed Air Temperature control mode requires that the unit be configured for MRT or MRT Expert controls and that a room sensor be installed and functioning ALARM CODE Room Sensor Failure PROBLEM The unit is configured for MRT or MRT Expert control and communications between the room sensor and the unit control module have failed This alarm will automatically clear after the alarm is corrected SOLUTION Investigate room sensor 1 When room sensor communications are interrupted the displayed room temperature will be equal to the last good temperature reading received from the room sensor for approximately 5 minutes following the interruption For 45 example if the room temperature
74. peration yes no e Daily Schedule 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 O O O O VVVVVVVV e Holiday o Holiday typical 1 through 12 gt Use yes no gt Stat Time hr min gt Stop Time hr min Month 1 12 Day 1 31 Previous 50 gt Next gt Home gt Logout e Override Override typical 1 through 2 gt Use yes no gt Statt Time hr min gt Stop Time hr min Month 1 12 Day 1 31 Previous Next Home gt Logout CLOCKSET HOTKEY 0 e Time hh mm ss e Date dd mm yy e Previous e DST o Start Time hh mm o Amount 060 o Beg 11 2012 End Nov 04 2012 o Beg 10 2013 End Nov 03 2013 o Beg Mar092014 End Nov 02 2014 o Beg 08 2015 End Nov 01 2015 o Beg 132016 End Nov 06 2016 o Beg Mar122017 End Nov 05 2017 o Beg Mar112018 End Nov 04 2018 o Beg Mar102019 End Nov 03 2019 o Beg Mar082020 Nov 01 2020 o Beg 14 2021 End Nov 07 2021 o Previous HELP HOTKEY 5 Fan Sequence Room Sensor Heating Sequence Cooling Sequence Schedule Sequence Calibrate Sequence Previous Home Alarm User Config User Configured Output 51 USER CONFIGURABLE OUTPUT HOTKEY 8 User Control Setpoint User Input Variable User Output PID Select Direct Acting Reverse Acting High Input Value Low Input Value Maximum User Setpoint Minimum User Setpoint
75. perature Is it less than 130 F 1 Yes There is a problem with the controller program or controller itself Contact the factory 2 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 b 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 1 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 36 2 Yes Continue 5 Is there 24VAC on the signal conditioner power terminals a No Determine cause and rectify b 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 a No Replace the signal conditioner b 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 a No There is a break in the wiring between the signal conditioner and the modulating valve terminals Determine cause and rectify b Yes The electronics are working to this point Continue 8 I
76. powering the damper actuator and the control signal is OVDC 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 24V AC at the COM and EXC terminals on the airflow station pressure transducer a Yes Continue b No Is there 120VAC on the primary side of the low voltage transformer and 24V AC volt at the transformer secondary 1 Yes There is an open in the wiring between the transformer and the transducer Locate the wiring problem and rectify 2 No If there is 120VAC on the primary and OVAC on the secondary replace the transformer If there is OVAC 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 tubes from the airflow station pressure transducer and gently blow into the HIGH side port Caution The transducer is extremely 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 a Yes Continue b No The pressure transducer is defective Replace it
77. pressure switch has closed between the appropriate 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 This alarm will automatically clear about 5 seconds after the alarm is corrected SOLUTION If clogged filter switch is closing 1 Are the filters dirty a Yes Install clean filters and continue b No Continue 2 Are the airflow switch sensing tubes obstructed a Yes Clear and continue b No Continue 3 Is the airflow switch setpoint properly adjusted a No Adjust setpoint b Yes Continue 4 Are the wires connected to the air pressure switch s normally open contact a No Rewire switch and continue b Yes Continue 5 Is the air pressure switch s normally open contact open a No Disconnect the sensing tubes and recheck Replace the switch if contacts do not open b 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 a Yes There is short in the wiring between the terminal strip and the switch Determine cause and rectify b No Continue 7 Unplug the connector from the controller that is connected to the multiplexed input Does this clear the alarm a Yes There is short in th
78. rameter to Manual and press the ENTER button 4 Once the system has accepted this new parameter value the unit will run continuously in Manual mode Use a similar procedure to make changes to other operational parameters and setpoints as necessary MODSTAT The modstat module status screen allows the user to check the program version number and whether the programs are initialized and running If the red error LED is flashing on the module a modstat is a useful troubleshooting tool Perform the modstat by pressing and holding the FN key and then pressing the period key and then releasing both keys at the same time Scroll down until you see the following message 2 PRGs initialized 2 PRGs running If this message is not visible anywhere on the modstat screen after scrolling through the whole screen contact the factory to troubleshoot the issue with the unit control module There is likely an issue with the unit control module that is preventing the unit from functioning correctly The name of the main control program and its version number can also be seen on the modstat screen for example Application Software Version ifrrecircz583_032813 For networking purposes the device instance number can also be accessed via the modstat function for example Device Instance 0024009 UNIT MODES HOTKEY 2 e Auto Off Man o Auto o Off o Manual e Damper Mode o MATempCtrl o BldgPressCtrl o ManualCtrl 48 e Home e Setpoints e
79. re Fuel Selection As specified Natural Propane Heating Unoccupied Setpoint 55 F 40 F 130 F Cooling Unoccupied Setpoint 100 F 40 F 130 F Remote Temperature Setpoint OFF 55 F 90 F Heating Occupied Setpoint 65 F 40 F 130 F Cooling Occupied Setpoint 73 F 40 F 130 F Outside Temperature for 55 40 130 Heating Cooling Changeover Setpoint MDT Expert Control Freezestat 45 F 35 F 80 F Heating Economizer Setpoint 65 F 40 F 130 F Cooling Economizer Setpoint 55 F 40 F 130 F Minimum Heating Discharge 55 F 40 F 130 F Temperature Setpoint Maximum Heating Discharge 100 F 40 F 130 F Temperature Setpoint Minimum Cooling Discharge 55 F 40 F 130 F Temperature Setpoint Maximum Cooling Discharge 75 F 40 F 130 F Temperature Setpoint Heating Discharge Setpoint 65 F 40 F 130 F MDT Expert Control ITEM DEFAULT RANGE Cooling Discharge Setpoint 73 40 130 MDT Expert Control Remote Damper Position Setpoint 0 Outside Air 0 100 Mixed Air Temperature Setpoint 50 F 30 F 90 F Building Pressure Setpoint 0 00 0 10 0 10 W C Manual Damper Position Setpoint 20 Outside Air 0 100 Minimum Ventilation Setpoint 20 Outside Air 0 100 Manual Damper Position Setpoint 25 Outside 25 100 75 25 direct fired heaters
80. rner gas firing rate OUTPUT ASSIGNMENTS DIGITAL DO1 Unit Enable DO2 Burner Enable DO3 Stg 1 Cooling Enable DO4 Stg 2 Cooling Enable DOS 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 Flame Failure Alarm Safety Circuit Status Manual Mixed Air Dmpr Control IN4 Multiplexed e Auxiliary Unit Enable e Clogged Filter e Fan Status e Burner Status Outside Air sensor Discharge Air sensor Unit Enable Remote Setpoint Damper Control RNET Room Air sensor Appendix IV I O Zone 583 Controller Battery Checkout The battery on the unit control module retains the controller s memory in the event of power failure The 10 year Lithium CR2032 battery provides a minimum of 10 000 hours of data retention during power outages Remember to check the battery periodically once a month or so to verify that its voltage is approximately 3 VDC If the voltage is not approximately 3 VDC replace the battery so that the controller s program is not lost during a power outage Loss of the program will require the controller to be shipped back to the factory for reprogramming because the unit will not function without the program Make sure the controller is powered any time the battery is removed or the controller s memory may be lost Figure 5 shows the location of t
81. rner s firing rate based on the percentage of outside air and thus the carbon monoxide generated by the unit Expressed mathematically it is Teg Taa Toa Tra PID Control or loop Proportional Integral Derivative control a common control scheme used in modulating HVAC systems Remote Control Panel The remote control panel is a cover plate with one or more of the following controls and indicators unit enable remote temperature setpoint pot remote damper control pot speed control switch fill drain switch fan on clogged filter high speed low speed burner on cool on lights This cover plate fits on a standard 3 gang electrical switch box See BACview WebCTRL A web based graphical user interface which provides the user access to the unit via the internet 46 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 Links to other menu headings are also available by pressing one of the 4 keys located directly below the screen Special Functions EN MUTE Clear Alarms FN period Module Status modstat FN 9 Unit Setup Access to th
82. roller between the burner status terminals a No Close manual gas valves There is a short in the wiring between the burner status relay and the burner status terminals Determine cause and rectify b Yes Close manual gas valves Replace the controller 39 ALARM CODE Flame Failure This alarm code is not applicable to all unit types PROBLEM The controller has received a signal from the flame relay indicating a flame failure SOLUTION Investigate flame relay 1 Is there a prior alarm such as Unit On Fan Off Airflow Sw or Safety Circuit a Yes See the Diagnostic section for the previous alarm b No Continue 2 See flame relay troubleshooting information in unit Installation Operation and Maintenance Manual Diagnostics Non Critical Alarm Codes This section should assist the user in troubleshooting non critical alarm code messages that have been displayed on the BACview Most of these alarms are automatically reset once the alarm is corrected or condition changes Exceptions to this rule are noted in the alarm problem descriptions that follow ALARM 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 alarm will automatically clear about 15 seconds after the alarm is corrected SOLUTION If fan is running 2 Is controller unit enable output LED for lit a Yes There is a problem with
83. s there sufficient temperature rise for the amount of outside air that is being delivered to the space a 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 outside air that is being delivered to the space 1 No Contact the factory 2 Yes Continue b 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 ALARM CODE Safety Circuit Open PROBLEM The controller has detected a failure in the safety circuit This alarm does not disable the burner and does not affect actual operation of the unit in any way It merely provides status information to the user indicating that the safety circuit tripped Though the condition may have already been rectified automatically the alarm must be manually reset in order to be cleared from the system Requiring the manual reset gives the user the ability to know that the alarm occurred at some previous time should they wish to further investigate the situation See the Unit Resets section of this manual for information on how to manually reset the alarm 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 a Yes See the Diagnostic section for the previous alarm
84. ss Enter Set the start time to 6 00 AM and the stop time to 8 00 AM Remember the Holiday schedules represent the period during which the unit is to be Unoccupied Set the Month field to 11 November and the Day field to 19 Monday the first weekday that week Your screen should now look like this 8 Press the link key corresponding to the Next field on the screen This will take you to Holiday Schedule 2 Set the start time for Holiday Schedule 2 to 12 00 PM and the stop time to 5 00 PM Set the Month field to 11 November and the Day field to 19 Monday the first weekday that week Your screen should now look like this Repeat this step for the 20 217 250 and 23 Tuesday Wednesday Thursday 13 and Friday using Holiday Schedules 3 through 10 then proceed to the next step 9 Since the maintenance crew will be in the building at 5 00 AM on Monday we will need an override schedule to override part of the Holiday schedule we just created Navigate back to the Schedules screen using the FN 7 hotkey Move the cursor to select the Override field and press Enter Set the start time to 5 00 AM and the stop time to 8 00 AM Remember the Override schedules override the Holiday schedules and represent the period during which the unit is to be Occupied Set the Month field to 11 November and the Day field to 19 Monday the first weekday of Thanksgiving week in 2012 Your screen should now look like this 10 Press the
85. t is not receiving a signal that the fan is running This alarm will automatically clear about 60 seconds after the alarm is corrected Turning the unit off and then on will clear this alarm at any time SOLUTION If fan motor is running 1 Is the BACview remote indicating an alarm a Yes Check previous alarms and continue b No Continue 2 Is the motor starter s normally open auxiliary contact closed a No Replace contact b Yes Continue 3 Are the high and low velocity airflow switch contacts closed a No Are the belts on and is the fan motor 1 Yes Contact factory Do not adjust the switches setpoints 2 No Determine cause and rectify b Yes Continue 4 Is the fan status relay energized a No There is an open or break in the wiring Determine cause and rectify b Yes Continue 5 Is the fan status relay s normally open auxiliary contact closed a No Replace relay b Yes Continue 6 Is there continuity at the controller between the fan status terminals a No There is an open in the wiring between these terminals Determine cause and rectify b Yes Replace controller SOLUTION If fan motor is not running 1 Is the BACview remote indicating an alarm a Yes Check previous alarms and continue b No Continue 2 Is controller output LED for the unit enable output lit a No There is a problem with the controller Replace controller b Yes Continue 3 Is the unit enable relay energized a No Ther
86. tenance crew will come in at 5 00 AM on Friday to complete preliminary tasks in preparation for the week We will use this sample schedule as our guide in programming the sample schedule Refer to the Menu Selection Tree for BACview section of this manual for more information about the BACview buttons hotkeys and menus The sample schedule and instructions below are just a guide you may skip the rest of the Scheduling Time Clock section of this manual if you are already comfortable programming daily holiday and override schedules Simply determine when you want the unit to operate on the Occupied and Unoccupied setpoints and set the schedule in the BACview accordingly 1 Use the FN 7 hotkey to jump directly to the Schedules screen of the menu tree While holding the key press the 7 key and the Schedules screen will appear The BACview may prompt you for the User password The default password is 0000 2 Navigate to the Daily field and press the Enter button The screen will show a blank daily schedule To enable the Daily schedule set the Use field to Yes The Stat field indicates whether the schedule on that screen is currently active so you may see either ON or OFF in this field Navigate to the Start Time field and set the start time for 6 00 AM Be aware that times are programmed in a 24 hour format For example 2 00 PM would be programmed as 14 00 which will show up on the BACview screenas 14 0 Navigat
87. that is 2 F below the cooling setpoint the cooling and fan will be disabled Follow the dashed line downward If the room temperature falls to the heating setpoint the fan and 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 a temperature that is 2 F above the heating setpoint the heating and fan will be disabled Cooling mode cooling SP cooling enable Cooling mode 2 F of cooling SP cooling disable 2 F of heating SP heating disable T T P R R A A T T U U R R heating SP heating enable 1 DW Heating Heating mode Heating mode Figure 2 22 Figure 3 Occupied Example except MDT and MDT Expert Start at point The unit is in the ventilation mode and the room or outside air temperature is rising Follow the dashed line upward If the room or outside air temperature 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 Follow the solid line clockwise Once the room or outside air temperature has fallen to the cooling setpoint the cooling mode will be disabled and the unit will be in the ventilation mode Follow the dashed line downward If the room or outside air temperature falls to a temperature that is 2 F below the heati
88. unction overrides the time clock function and automatically cycles the unit into operation 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 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 AireLogic DDC controller automatically switches between the heating ventilating and cooling modes of operation The previous sections described the Heating and Cooling Setback operation This section concentrates primarily on the Occupied operating modes Figures 1 and 2 provide a pictorial representation of the slight differences between the occupied and unoccupied periods Heating Mode Depending on the control type the Occupied Heating Mode allows the burner to operate as needed and is activated whenever the room or outside air temperature is 2 F below the heating setpoint During the Unoccupied Heating Mode the burner is activated whenever the room or outside air temperature is at the heating setpoint and is deactivated 2 F above the heating setpoint MDT and MDT Expert control systems do not require a room sensor As such one is not provided for units that ship from the factory confi
89. urner if the outside air temperature is above the Heating Economizer setpoint This function is similar to an inlet duct thermostat The burner will cycle back on if the supply air temperature drops 3 below the Heating Economizer setpoint To change the desired heating economizer temperature scroll through the SETPOINTS menu tree locate the HEATING ECONOMIZER Setpoint and enter a new temperature The default for this setpoint is 65 F The allowable temperature range is 40 F 130 F Ventilation Mode Ventilation Mode occurs when the fan is running but the unit is not providing heating or cooling The ventilation mode is dependent on the room MRT and MRT Expert or outside air MDT and MDT Expert temperature The heating ventilation cooling operation is 21 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 diagrams on the following pages to determine the mode of operation Figure 2 Unoccupied Example except MDT and MDT Expert Start at point A The unit is off because neither heating nor cooling is required and the room temperature is rising Follow the dashed line upward If the room temperature rises to the cooling setpoint the fan and cooling will be enabled and the unit will be in the cooling mode Follow the solid line clockwise Once the room temperature has fallen to a temperature
90. xpert control system scroll through the menu tree locate the Damper Mode branch and select Bldg Pres Ctrl Next scroll through the menu tree locate the Setpoints branch select Bldg Pres and enter the desired pressure The allowable range is 0 05 wc to 40 05 we 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 26 the minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation 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 rec
91. y the PID control sequence and the override will have no effect on the output If the supply air temperature is more than 75 F the output from the controller will be determined by the PID control sequence or the override whichever is less If the supply air temperature is less than 75 F the output from the controller will be determined by the PID control sequence or the override whichever is more Max User SP 80 F 100 Input gt 75 F override scaler 75 F 0 75 F PID 0 100 75 F 100 User Ctrl SP 0 100 Output override scaler Input lt 75 F Min User SP 70 F 0 29 Reverse Acting The controller output AO 1 is modulated by a PJD loop from 0 to 100 based on the User Control setpoint and the input signal to IN 2 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 situation the output value is the lesser of the PID output or the override output If the input variable is below the User Control setpoint the output could increase

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