Wiring Diagrams And Operating Sequence - Lennox G32 SERIES Unit Information

VII−WIRING DIAGRAMS & SEQUENCE OF OPERATION
FURNACE MAY BE CONTROLLED BY EITHER
A SINGLE OR TWO STAGE THERMOSTAT
(TWO STAGE THERMOSTAT SHOWN)
THERMOSTAT
C R
W2 W1 G
Y
TO COMPRESSOR
CONTACTOR
Two−Stage
Thermostat*
Y
G
INDOOR BLOWER
W1
2ND STAGE HEAT
W2
R
C
TYPICAL G32 FIELD WIRING DIAGRAM
FLAME
ROLLOUT
SWITCH
LOW HEAT
PRESSURE
SWITCH
(−75 ONLY)
GAS
VALVE
Y G W
SURELIGHT CONTROL
G32 and CONDENSING UNIT
THERMOSTAT DESIGNATIONS
(Refer to specific thermostat and outdoor unit.)
SureLight
Control Board
COOLING
Y
G
HEAT
W
POWER
R
COMMON
C
IGNITION
LIMIT
CONTROL
HIGH HEAT
FIELD
PRESSURE
MAKE−UP
SWITCH
BOX
COMBUSTION
AIR BLOWER
TRANSFORMER
CONTROL
BOX
R C DOOR
INTERLOCK
SWITCH
TWO STAGE RELAY CONTROL PIGTAIL
W2
FIELD INSTALLED CLASS II 24V VOLTAGE
FIELD INSTALLED LINE VOLTAGE
FIGURE 44
Condensing Unit
COMPRESSOR
COMMON
*Single−stage thermostat does not contain W2 terminal
and W1 terminal is designated as W.
FIGURE 45
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L1 N GND
BLACK
WHITE
J69
BROWN
TO ACCESSORY IF USED.
(ELECTRONIC AIR CLEANER)
IF NOT NEEDED, DO NOT INSTALL
ACCESSORY WIRE IN J69.
HS UNIT
COMPRESSOR
G32 TWO−STAGE CONTROL
BOARD PIGTAIL LEAD
W2
HS UNIT
COMMON