Electrical Wiring Diagram - Williams 2903512 Installation Instructions And Owner's Manual

EV1 LOW FLAME COIL
EV2 HIGH FLAME COIL
M FAN MOTOR (2 MOTORS)
M1 OVERHEAT THERMOSTAT
M2 FAN THERMOSTAT
M9 MAIN FUSE – 5X20 size – 4A
NP PRESSURE SWITCH
RP8 FLAME SENSOR
RP7 SPARK IGNITER (2 pcs)
S COMBUSTION BLOWER MOTOR
SF FLAME VIEW LAMP (GREEN LAMP)

Electrical Wiring Diagram

SB LOCK-OUT LAMP (RED LAMP)
TR TRANSFORMER 120-24 V
Z1 RESET AND SUMMER – WINTER SWITCH (*)
Z2 HI-LO FLAME AND FAN SPEED SWITCH (*)
Z3 MANUAL – PROGRAM MODE SWITCH (*)
Z8 PROGRAMMABLE TIMER (*)
Z9 ROOM THERMOSTAT
L1 SUPPLY LINE – LIVE WIRE
L2 SUPPLY LINE – NEUTRAL WIRE
GND SUPPLY LINE – GROUND WIRE
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