Weil-McLain GOLD CGa Installation And Maintenance Manual page 38

GOLD
9a
Operation —
Figure 25a Schematic wiring diagram — Spark-ignited pilot system
• The control module is polarity-sensitive to the
incoming 120 VAC power. If polarity is reversed,
control will flash the
and will not cycle boiler.
• All contacts shown without power applied.
• Connector and status light locations/orientations
may vary.
White
Plug-in
connectors
Red
W
TRANSFORMER
B
R
BR
W
SPILL SWITCH
B
WATER
TEMPERATURE
LIMIT SWITCH
Y
59347b
38
CGa Gas-Fired Water Boiler
spark-ignited pilot system
POWER light when powered
Items not provided
CIRCULATOR
W Y
B
Y
W
W
B
Y
ROLLOUT TFE
Y
Additional limits,
if used (note 7)
120 VAC — Hot
SERVICE
SWITCH
Wire nuts
Black
White
Junction box,
boiler left side
CONTROL MODULE
B
G
G B
G
Y
W
R
R B
G
3 1
4 2
Y
VENT DAMPER
continued
Neutral Gnd THERMOSTAT THERMOSTAT
FIELD
WIRING
Ground
screw
Green Black
Jacket opening,
boiler left side
B
Y
BL R W
B
B
BURNER
R
BR
W
(Honeywell VR8204 shown)
"C"
"A"
"B"
Terminal block
GAS VALVE
(See Table G)
Part Number 550-110-593/1099
70
70
Black
PILOT
O
BL
W
R