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These diagrams below are provided for new installations or unreferenced wires.
TYPICAL HOOKUP FOR 2-WIRE
24V HEATING SYSTEM AND
MILLIVOLT SYSTEM
G
Y
VALVE
TRANSFORMER
TYPICAL COOLING AND
HEATING SYSTEM
(4-WIRE)
G
Y
W RH RC
GAS
FAN
VALVE
COOL
COMP
Figure 10
if you have an electric system and the blower does not operate after installation, find the factory installed yellow wire
currently attached to the "Y" terminal and move it to the "A" terminal on the sub-base.
W RH RC
GAS
24 VAC
OR
THERMOPILE
110
Figure 8
24 VAC HEAT
TRANSFORMER
110
N O T E
TYPICAL HOOKUP FOR 3-WIRE
HEAT SYSTEM IF THIRD
WIRE IS FAN WIRE
G
Y
W RH RC
GAS
VALVE
FAN
24 VAC
TRANSFORMER
110
Figure 9
TYPICAL COOLING AND
HEATING SYSTEM
(5-WIRE)
G
Y
W RH RC
GAS
FAN
VALVE
REMOVE
JUMPER
COOL
BETWEEN
COMP
RH & RC
24 VAC HEAT
TRANSFORMER
110
Figure 11
24 VAC COOL
TRANSFORMER
110
3
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