CONNECTION DIAGRAM
SEE RATING PLATE FOF
MODEL PLUG USE
NOTES:
HSI LO
I
BRN BRN
o H_LHL_ CAP-
--me
i i
o_
Qm_
1. If any of the original equipment wire is replaced use wire rated for 105°C.
2. Use only copper wire between the disconnect switch and the
furnace junction box (JB).
3. This wire must be connected to furnace sheet metal for control
to prove lame.
4. Symbols are electrical representation only.
5. Solid lines inside PCB are printed circuit board conductors and
are Rotincluded in legend.
6. Replace only with a 3 amp fuse.
7. Inductor is used with 3/4 hp and 1 hp ECM Blower motors.
8. Factory connected when (LGPS) not used.
9. Blower off-delay, gas heating selections are (90, 120, 150, 180)
seconds, cooling or heat pump 90 seconds or 5 seconds when
dehumidify call is active.
10. Ignition lockout will occur after four consecutive usuccessful
trials for ignition. Control will auto-reset after three hours.
11. Inducer motor (IDM) contains internal auto-reset thermal overload switch.
12. Any of the 5 wires shown within the NEUTRAL L2 box can be
connected to any terminal within the box.
13. Blower motor (BLWM) is locked rotor overload protected by redundant
electronic control circuits.
SCHEMATIC DIAGRAM
TO115VACFIELD-DISCONNECTSWITCH
K _L2 EQUIPMENT
GROUND _"
PL31_ _ _ _1 PL13
_ PLY2 _ _PL12 r _ nlwM 1
< --4qA ....... )
I rr-e \ j
EAC [ _
__EAO-_ EAC-__
FRS2 LS FRS1
PL1-6
HUM
_ FACTORYPOWERWIRING(115VAC)
JUNCTIONTERMINAL
0 CONTROLTERMINAL FACTORYCONTROLWIRING(24VAC)
I I1_ CONTROLTERMINAL
FIELDCONTROLWIRING(24VAC)
"J'- FIELDEARTHGROUND -- CONDUCTORONCONTROL
I _-- _ FIELDWIRINGSCREWTERMINAL
/-)7 EQUIPMENTGROUND --4 e,-, PLUGRECEPTACLE
NC AirConditioning(AdjustableAirflow-CFM) ILK BlowerDoorInterlockSwitch,SPST(N,O,)
ACR Air ConditioningRelay,SPST(N.O.) IND Inductor(Note#7)
ACRDJ AirConditioningRelayDefeatJumper LED LightEmittingDiodefor StatusCodes
BLWM BlowerMotor(ECM) LOPS LowGasPressureSwitch,SPST(N,O,)
CF ContinuousFan AdjustableAirflow-CFM LPS Low-HeatPressureSwitch,SPST N.O.
CAP-f Capacitor LS Lm tSw tch,Auto-Reset,SPST N,C,
COMMR CommunicationRelay,SPDT PCB PrintedCircuitBoard
CPU Microproceasor/Cirouitty PL1 12-CircuitConnector
DHUM DHUMConnection24VAC) PL2 4-CircuitHSI &IDMConnector
EAC-1 EectronoArC eanerConnecton PL3 4-ClmuitECMBLWMConnector
(115VAC1,0AmpMax,) PL4 4-CircuitModelPlugConnector
EAC-2 ElectronicAirCleanerConnectionCommon) PL7 4-CimuitCommunicationConnector
FRS-I,2 Fame-RooutSwitch,Man,Reset,SPST N,C, PL9 2-CircuitOATConnector
FSE Flamee-ProvingSensorElectrode PLfO 2-CgcuitHSl Connector
FU1 Fuse,3Amp,AutomotiveBladeType PLff 12-Circul IDMConnector
FactoryInstalled PL12 1-CircuitInductorSpliceConnector
FU2 FuseorDisconnect PLf3 5-CircuitBlowerGirl,Connector
GV GasValve PU4 4-CircuitBlowerPowerConnector
GVR GasValveRelay,DPST(N,O,) SWI-1 ManualSwitch,StatusCodeRecall
HPS High-HeatPressureSwitch,SPST(N.O.) SWl-2 ManualSwitch,MinimumHeatOnly
HPSR High-HeatPressureSwitchRelay,SPST N,C, SWl-3 ManualSwitch,MWIntHeatRiseAdj.
HSI HotSurfaceIgniter(115VAC) SW1-4 ManualSwitch,Comfort/Effy,Ad,
HSlR HotSurfaceIgniterRelay,SPST(N.O.) SW1-5 ManualSwitch,CoolingCFM/Ton
HUM 24VACHumidifierConnection(0,5AmpMax,) SWf-6 ManualSwitch,ComponentTest
HUMR HumidifierRelay,SPST N,O, SWl-7,8 ManualSwitches,BlowerOff-Delay
IDM InducedDraftMotor,2-Speed,PSC SW4-1 ManualSwitch,TwinningMain(OFF)/Sec,
IDR InducerMotorRelay,SPST(N,O,) SW4-2&3 ForFutureUse
IHI/LOR InducerMotorSpeedChangeRelay,SPDT TRAN Transformer,115VAC/24VAC
338308:20] Rev. E
Al1597
Fig. 64 - Wiring Diagram
87
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