S89E,F DIRECT SPARK IGNITION CONTROL MODULE
11
68-0066—05
Fig. 8. S89E simplified control system schematic.
M19842A
LIMIT
CONTROL
24 V
THERMOSTAT
SAFE START
CHECK
CIRCUIT
ALTERNATE
LIMIT
ON-OFF
SWITCH
24 V
(GND)
GND
(BURNER)
SENSE
WHITE
FLAME
SENSOR
SPARK
IGNITER
RELAY
BLUE
BLUE
BLACK
WIRING EXTERNAL TO S89
WIRING INSIDE S89
2K1
1K2
2K2
SPARK
IGNITER
SPARK
GENERATOR
VALVE
SPARK
IGNITER
RELAY
1K
2K
VALVE
(GND)
SENSOR
CIRCUIT
TIMING
CIRCUIT
DUAL
VALVE
L1
(HOT)
L2