Weil-McLain GOLD CGa Installation And Maintenance Manual page 39

Boiler Manual
Figure 25b Ladder wiring diagram — Spark-ignited pilot system
Electrical shock hazard — can cause
severe injury or death. Disconnect
power before installing or servicing.
Legend for ladder wiring diagram
120 VAC field wiring
Low voltage field wiring
120 VAC factory wiring
Low voltage factory wiring
High voltage spark ignition wiring
Ground connectors
Table G: Gas valve terminals and anticipator settings
Gas valve "A"
Honeywell VR8204
MV/PV
Honeywell VR8304
MV/PV
Robertshaw 7200
C
White-Rodgers 36C
2–4 *
* Terminals 2–4 are factory-jumpered on the
White-Rodgers 36C gas valve.
1. All wiring must be installed in accordance with:
A. U.S.A. — N.E.C. And any other national, state,
or local code requirements.
B. Canada — C.S.A. C22.1 C.E.C. Part 1 and any
other national, provincial, or local code require-
ments.
2. Pilot lead wires are not field replaceable. Replace pi-
lot assembly if necessary.
3. If any of the original wire as supplied with the ap-
pliance must be replaced, use minimum 105 °C
wire or equivalent. Exception — wires to a rollout
TFE must be 200 °C or equivalent.
4. Thermostat anticipator setting (single zone) — see
Table G for anticipator setting, depending on
which gas valve is installed in boiler.
5. For multiple zoning, use either zone valves or
circulators. Refer to the component manufac-
turer's instructions and this manual for applica-
tion and wiring suggestions.
6. Refer to control component instructions packed
with the boiler for application information.
7. Wire any additional limit controls (low water cut-
off, additional high limit, etc.) in series with boiler
limit control as shown.
Part Number 550-110-593/1099
Anticipator
"B" "C"
amps
0.6
MV PV
MV
PV 0.8
M P 0.55
1 3 0.7
59347a
Hot
120 VAC
SERVICE
SWITCH
CONTROL
HIGH
VOLTAGE MODULE
120 VAC
SECTION
PILOT
IGNITION
ELECTRODE
THERMOSTAT
Additional
limits
SPILL
(note 7)
SWITCH
ROLLOUT
WATER
TFE
TEMPERATURE
LIMIT SWITCH
DAMPER END SWITCH
(INTERNAL TO DAMPER)
HIGH
VOLTAGE
PILOT
FLAME
SENSOR
Neutral
CIRCULATOR
120 VAC
24 VAC
24VAC
CONSTANT
POWER
G
VENT
DAMPER
TSTAT/CIRC
R
24VAC
CALL FOR
HEAT
LIMIT
R
PILOT GAS
CONTROL MODULE VALVE
LOW VOLTAGE
"C"
SECTION
"A"
DAMPER
R
"B"
MAIN GAS
VALVE
See Table G
FLAME
R
Gnd
39