THE 24 VAC CIRCUIT IN FBR18 UNITS
24V
TRANSFORMER
J3 PIN 8
LED 3 (24V)
RELAY K2 ON EARLY DESIGN BOARDS
OR
RELAY K3 ON LATER DESIGN BOARDS
LED 4 (PWR)
RIGHT PWR TERMINAL
J2 PIN 7
BLOWER
CENTRIFUGAL
SWITCH
RIGHT
IGNITION
MODULE
J2 PIN 5
V1S TERMINAL
LED 2 (PWR)
LEFT PWR TERMINAL
J2 PIN 2
LEFT
IGNITION
MODULE
J2 PIN 4
V2S TERMINAL
LED 5 (GV)
J3 PIN 9
GAS
VALVE
