Installation manual

Page 48 IM-487
Wiring Diagrams
Legend
Designation Description Std. Location
ACT1 .....................................................................Actuator Motor, Supply Fan Vanes.........................................................................................Supply Air Sect.
ACT2 .....................................................................Actuator Motor, Return Fan Vanes.........................................................................................Return Air Sect.
ACT3, 4 .................................................................Actuator Motors, Economizer Dampers .................................................................................Economizer Sect.
ACT5 .....................................................................Actuator Motor, Discharge Isolation Damper..........................................................................Discharge Sect.
ACT6 .....................................................................Actuator Motor, Return Air Isolation Damper..........................................................................Return Air Sect.
ACT 10, 11.............................................................Actuator Motors, Exhaust Dampers .......................................................................................Return Air Sect.
ADI.........................................................................ADI Board...............................................................................................................................Main Control Box
AS..........................................................................Blower Air Switch ...................................................................................................................Furnace Sect.
BM .........................................................................Burner Blower Motor ..............................................................................................................Furnace Sect.
Cl, 5 .......................................................................Power Factor Capacitors. Compressor #1 .............................................................................Condenser Sect.
C2, 6......................................................................Power Factor Capacitors, Compressor #2 .............................................................................Condenser Sect.
C9, 10....................................................................Power Factor Capacitors, Supply Fan....................................................................................Supply Air Sect.
C11 ........................................................................Capacitor, Speed Trol (Circuit #1)..........................................................................................Cond. Bulkhead
C19. 20..................................................................Power Factor Capacitors, Return Fan....................................................................................Return Air Fan
C21........................................................................Capacitor, SpeedTrol (Circuit #2)...........................................................................................Cond. Bulkhead
COMPR.#1, 2 ........................................................Compressors 1 & 2.................................................................................................................Condenser Sect.
CS1, 2....................................................................Control Switches, Refrigerant Circuits....................................................................................Cond. Control Box
DHL .......................................................................Duct High Limit.......................................................................................................................Main Control Box
DS1........................................................................Disconnect, Total Unit or Condenser/Heat .............................................................................Main Control Box
DS2........................................................................Disconnect, SAF/RAF/Controls..............................................................................................Main Control Box
DS3........................................................................Disconnect, Electric Heat .......................................................................................................Electric Heat Sect.
DS4........................................................................Disconnect, Condenser..........................................................................................................Cond. Control Box
Fl............................................................................Fuse, Control Circuit...............................................................................................................Main Control Box
F2 ..........................................................................Fuse, Control Circuit...............................................................................................................Cond. Control Box
F3 ..........................................................................Fuse, Burner Motor ................................................................................................................Main Control Box
FBi, 2 .....................................................................Fuseblocks, Compressor #1 & #2 ..........................................................................................Cond./Fuse Ctrl Box
FB8........................................................................Fuseblock, Main Transformer.................................................................................................Main Control Box
FB9, 10..................................................................Fuseblocks, Supply Fan.........................................................................................................Main Control Box
FB11-18 .................................................................Fuseblocks, Condenser Fans.................................................................................................Cond. Control Box
FB19, 20................................................................Fuseblocks, Return Fan ......................................................................................................... Main Control Box
FB31-40.................................................................Fuseblocks, Electric Heat (Top Bank) ....................................................................................Electric Heat Sect.
FB41-50.................................................................Fuseblocks, Electric Heat (Bottom Bank)...............................................................................Electric Heat Sect.
FD..........................................................................Flame Detector.......................................................................................................................Furnace Sect.
FLC........................................................................Fan Limit Control....................................................................................................................Furnace Sect.
FS1........................................................................Freezestat Control..................................................................................................................Heat Sect.
FSG .......................................................................Flame Safeguard....................................................................................................................Furnace Sect.
GFS1/GFR1...........................................................Ground Fault Sensor/Relay, RPS Unit ...................................................................................Main Control Box
GFS3/GFR2...........................................................Ground Fault Sensor/Relay, RCS Unit...................................................................................Cond. Control Box
GRD.......................................................................Ground ...................................................................................................................................All Control Boxes
GV1 .......................................................................Gas Valve, Pilot ......................................................................................................................Furnace Sect.
GV2, 3 ...................................................................Gas Valves, Main ...................................................................................................................Furnace Sect.
HL1-10...................................................................High Limits, Elec. Heaters, Power (Top Bank) .......................................................................Electric Heat Sect.
HL11-20.................................................................High Limits, Elec. Heaters, Power (Bottom Bank).................................................................. Electric Heat Sect.
HL22......................................................................High Limit, Gas Heat (Prefilters).............................................................................................Supply Air Sect.
HL23......................................................................High Limit, Gas Heat (Final Filter)..........................................................................................Final Filter Sect.
HL31-40.................................................................High Limits, Elec. Heaters, Control (Top Bank)...................................................................... Electric Heat Sect.
HL41-50.................................................................High Limits, Elec. Heaters, Control (Bottom Bank) ................................................................Electric Heat Sect.
HP1, 2....................................................................High Pressure Controls, Refrigerant ......................................................................................On Compr. #1, #2
HP5........................................................................High Pressure Control. Gas ...................................................................................................Furnace Sect.
HS1........................................................................Heat Switch, Electric, Shutdown ............................................................................................Main Control Box
HTR1, 2 .................................................................Crankcase Heaters.................................................................................................................On Compr. #1. #2
IT ...........................................................................Ignition Transformer ...............................................................................................................Furnace Sect.
LP1, 2 ....................................................................Low Pressure Controls, Refrigerant .......................................................................................On Compr.
LP5 ........................................................................Low Pressure Control, Gas ....................................................................................................Furnace Sect.
LT2.........................................................................Light, Furnace On...................................................................................................................Furnace Sect.
LT3.........................................................................Light, Pilot Gas Valve On .......................................................................................................Furnace Sect.
LT4.........................................................................Light, Main Gas Valve On.......................................................................................................Furnace Sect.
LT10.......................................................................Light, Supply Fan ...................................................................................................................Supply Air Sect.
LT11.......................................................................Light, Return Fan....................................................................................................................Return Air Sect.
LT12.......................................................................Light, Heat Section.................................................................................................................Heat Sect.
LT13.......................................................................Light, Filter Section.................................................................................................................Filter Sect.
LT14.......................................................................Light, Final Filter Section........................................................................................................Final Filter Sect.
LTI 5.......................................................................Light, Discharge Section ........................................................................................................Discharge Sect.
LT16.......................................................................Light, Blow-through Coil Section ............................................................................................Blow-thru Coil Sect.
LT17.......................................................................Light, Evaporator Coil Section................................................................................................Evaporator Coil Sect
LT18.......................................................................Light, Preheat Section............................................................................................................Preheat Sect.
LT19.......................................................................Light, Blank Section................................................................................................................Blank Sect.
LT20.......................................................................Light, Blank Compartment......................................................................................................Blank Compartment
LT22.......................................................................Light, Condenser Section.......................................................................................................Condenser Sect.
M1, 5......................................................................Contactors, Compressor #1 ...................................................................................................Cond. Control Box
M2, 6......................................................................Contactors, Compressor #2 ...................................................................................................Cond. Control Box
Mg, 10....................................................................Contactors, Supply Fan..........................................................................................................Main Control Box
M11-18...................................................................Contactors, Condenser Fans, Circuit #1 ................................................................................Cond. Control Box
M19, 20..................................................................Contactors, Return Fan..........................................................................................................Main Control Box
M21-28 ..................................................................Contactors, Condenser Fans, Circuit #2................................................................................Cond. Control Box
M29........................................................................Contactor, Burner Motor.........................................................................................................Furnace Sect.
M31-39 ..................................................................Contactors, Elec. Heaters (Top Bank) ....................................................................................Electric Heat Sect.
M41-50 ..................................................................Contactors, EIec. Heaters (Bottom Bank) ..............................................................................Electric Heat Sect.
MAT .......................................................................Mixed Air Temperature Sensor...............................................................................................Supply Air Sect.
MCB1.....................................................................Microprocessor Control Board #1...........................................................................................Main Control Box
MJ..........................................................................Mechanical Jumpers ..............................................................................................................Terminal Blocks
MP1, 2 ...................................................................Motor Protectors, Compressor #1, #2 ....................................................................................On Compr. #1, #2
NB1, 2....................................................................Neutral Blocks ........................................................................................................................Main Control Box
NB3........................................................................Neutral Block..........................................................................................................................Cond. Control Box
OAE.................................................................. Outside Air Enthalpy Control.......................................................................................................Economizer Sect.
OAT .................................................................. Outside Air Temperature Sensor.................................................................................................Discharge Bulkhead
OBA.................................................................. Output Board A, Standard...........................................................................................................Main Control Box
OBB.................................................................. Output Board B, Cooling .............................................................................................................Main Control Box
OBC.................................................................. Output Board C, Heating............................................................................................................. Main Control Box
OL9, 10............................................................. Overload Relays, Supply Fan .....................................................................................................Main Control Box
OL19, 20........................................................... Overload Relays, Return Fan .....................................................................................................Main Control Box
OP1, 2 .............................................................. Oil Pressure Controls, Compr. #1, #2 .........................................................................................Cond. Control Box