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R
Y1
O
BGE
W2
LC
Y2
APRILAIRE MODEL 8336 HEAT PUMP THERMOSTAT
R-VR
Y1
O
F
E
W1
X
LENNOX LOW
VOLTAGE TERMINAL BOARD
APRILAIRE MODEL 8336 HEAT PUMP THERMOSTAT CONVERSION TO LENNOX
HP21 WITH CB21 PCB HEAT PUMP SYSTEMS
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
24 VAC, RETURN
COMPRESSOR CONTACTOR
REVERSING VALVE [COOLING MODE]
FAN CONTACTOR CIRCUIT
EMERGENCY HEATING CIRCUIT
2ND. STAGE HEATING CIRCUIT
24 VAC, COMMON
L
Y2
R
Y1
O
BGE
W2
LC
Y2
APRILAIRE MODEL 8336 HEAT PUMP THERMOSTAT
R-VR
M
R
F
E
Y
X
LENNOX LOW
VOLTAGE TERMINAL BOARD
APRILAIRE MODEL 8336 HEAT PUMP THERMOSTAT CONVERSION TO LENNOX
HP22 WITH CB19 PCB HEAT PUMP SYSTEMS
THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR
FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS
24 VAC, RETURN
COMPRESSOR CONTACTOR
REVERSING VALVE [HEATING MODE]
FAN CONTACTOR CIRCUIT
EMERGENCY HEATING CIRCUIT
2ND. STAGE HEATING CIRCUIT
SYSTEM MONITOR LED
24 VAC, COMMON
2ND. STAGE COOLING CIRCUIT
L
Y2