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Fig. 6—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with a two-stage gas control and
power-assisted combustion.
7 69-0463
5
MV MV/PV PV
GND
(BURNER)
24V
GND
24V
TH-W
(OPT)
VENT
DAMPER
PLUG (OPT)
SPARK
5
S8600F,H,M; S8610F,H; S8660D; S8670D
PILOT
BURNER
GROUND
PILOT GAS
SUPPLY
Q345, Q346,
Q348, Q362,
Q381PILOT
BURNER/
IGNITER-
SENSOR
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG, CONNECT THERMOSTAT TO TH-W. LEAVE
24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
1
2
3
4
5
M1178C
AIR
PROVING
SWITCH
COMBUSTION
AIR BLOWER
RELAY
L1
(HOT)
L2
1
COMBUSTION
AIR BLOWER
MOTOR
THERMOSTAT
L2
1
LIMIT
CONTROLLER
L1
(HOT)
RW2W1
2ND
OPERATOR
1ST
OPERATOR
COM
MAIN
VALVE
STAGE 1
TWO STAGE DUAL VALVE
COMBINATION GAS CONTROL
PILOT
GROUND
MAIN
VALVE
STAGE 2
4
2