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24 VOLT CIRCUIT
With Interface Board 806-3398 or 106-0386 and
One 807-3366 (FV) Ignition Module
NOTE: Some units may
be wired in this manner.
IGNITION
MODULE
V1S
PWR (left side)
V2S
LED 5 (GV)
J3 PIN 9
Jumper
LED 3 (24V)
24V
TRANSFORMER
IGNITION
MODULE
PWR (right side)
V1D
LED 5 (GV)
J3 PIN 9
J3 PIN 8
LED 4 (PWR)
HIGH
LIMIT
SWITCH
GAS
VALVE
High Voltage
to Left Ignitor
High Voltage
to Right Ignitor
Left Flame
Sensor
Right Flame
Sensor
DRAIN
SAFETY
SWITCH
This switch used only with
built-in filtration systems.
Heat Relay
(K2 Fixed)
(K3 Replaceable)