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L1 HOT
INTERLOCK
SWITCH
WARNING-
ELECTRIC SHOCK HAZARD,CAN CAUSE INJURY
OR DEATH.UNIT MUST BE GROUNDED IN ACCORDANCE
WITH NATIONAL AND LOCAL CODES.
NOTE-
IF ANY WIRE IN THIS APPLIANCE IS REPLACED,IT
MUST BE REPLACED WITH WIRE OF LIKE SIZE,
RATING, INSULATION THICKNESS, AND TERMINATION
Page 42 of 53
CHOKE
(IF USED)
120V
24V
ROLLOUT
ROLLOUT
SWITCH
SWITCH
(IF USED)
LIMIT
PRESSURE
PRESSURE
SWITCH
SWITCH
(LOW)
(HIGH)
WIRING SCHEMATIC
Figure 64. Typical Field Wiring Diagram
120/1/60
FP
IGN
IND HIGH
IND LOW
HUM
EAC
CIRCULATION
BLOWER
MOTOR
TRANSFORMER
TR
TH
HLO
HPS1
MVH
LPS1
MVL
IGNITION
CONTROL
HLI
W1 W2
R G
C
W1 W2 Y R G
THERMOSTAT
Issue 2341
FLAME
SENSOR
HOT SURFACE
IGNITER
INDUCED DRAFT
BLOWER
MOTOR
HUMIDIFIER
AIR CLEANER
2ND STAGE
1ST STAGE
GAS VALVE
MOTOR
Y
CONDENSER
LINE VOLTAGE FIELD INSTALLED
LINE VOLTAGE - FACTORY
CLASS II VOLTAGE FIELD WIRING
LOW VOLTAGE - FACTORY
HEATING UNITS-GAS
GAS FIRED TWO STAGE
FURNACE
NEUTRAL
Supersedes
508405-01
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