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S89E,F DIRECT SPARK IGNITION CONTROL MODULE
L1
(HOT)
AIR PROVING
SWITCH
24 V
WIRING EXTERNAL TO S89
WIRING INSIDE S89
Automation and Control Solutions
Honeywell International Inc.
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
68-0066—4
G.R. Rev. 12-03
ON-OFF
LIMIT
SWITCH
CONTROL
L2
COMBUSTION
L1
AIR BLOWER
(HOT)
COMBUSTION
ALTERNATE
AIR BLOWER
LIMIT
RELAY
THERMOSTAT
1K2
2K1
2K2
Fig. 9. S89F simplified control system schematic.
SPARK
IGNITER
BLUE
RELAY
BLUE
SPARK
GENERATOR
WHITE
BLACK
SENSE
2K
SENSOR
CIRCUIT
1K
SAFE START
CHECK/
VALVE-ON
DELAY
CIRCUIT
SPARK
IGNITER
RELAY
TIMING
CIRCUIT
VALVE
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
L2
24 V
(GND)
SPARK
IGNITER
GND
(BURNER)
FLAME
SENSOR
DUAL
VALVE
VALVE
(GND)
M19843A
www.honeywell.com
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