Weil-McLain GOLD GV 3 Series Manual page 71

• Installation • Start-Up • Parts • Maintenance
Figure 34 GCM (control module) harness plug receptacle and indicator light locations.
White
120 VAC N
Green
Ground
Black
120 VAC H
120 VAC IN
White
120 VAC N
Black
120 VAC H
120 VAC to
transformer
POWER
TSTAT CIRC
LIMIT
PRES SWITCH
FLAME
Indicator lights
Part number 550-141-850/0699
White
120 VAC N
Green
Ground
Black
120 VAC H
120 VAC to
blower motor
Yellow wires
to limit control
and block temp
switch
Black wires to
thermostat circuit
White
120 VAC N
Green
Ground
Black
120 VAC H
to System
circulator
(long harness)
120 VAC
to circulators
Red wires to
pressure switch
Blue wires to
gas valve
24 VAC control
Black leads
circuits
temperature
120 VAC IN
120 VAC to transformer
120 VAC to blower motor
120 VAC to circulators
24 VAC control circuits
water temp sensor
24 VAC from transformer
120 VAC to igniter
85051
White
120 VAC N
Green
Ground
Black
120 VAC H
to Bypass
circulator
(short harness)
to water
sensor
water temp
sensor
24 VAC
24 VAC from transformer
120 VAC to igniter
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