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Honeywell
--
THE S89E,F
MODULES
CONTROL
THE IGNITION
SEQUENCE
AND GAS CONTROL
OPERATION
IN
DIRECT
SPARK
SYSTEMS
USED PRIMARILY
ON
GAS-FIRED ATMOSPHERIC
AND POWER BURNERS
IN RESIDENTIAL
FURNACES
AND HEATING APPLI-
ANCES.
0 Requires separate
120 Vat spark generator.
Cl S89E has 10 second max. delay for safe start check
before ignition.
0 S89F has 30 second min. delay for safe start check
plus prepurge before ignition.
0 Available
with 4 or 11 second (nominal) lockout tim-
ing.
0
100 percent shutoff for use with all heating gases.
0 Ambient temperature
rating is minus 40° F to plus
-
175O F [minus 40" C to plus 80" C].
•i Separate
electrodes
for spark
ignition
and flame
sensing.
0 Uses Honeywell
or any other 2 A or less dual valve
combination
gas control designed for DSI applications.
0 Locks out system after trial for ignition if malfunction
exists or main burner fails to ignite.
III Flame rectification
principle
used to monitor flame;
false flame signal resulting from short to ground results
in safety shutdown.
Cl After safety shutdown, S89E and Fcan be reset from
the thermostat.
J.A.
Rev. lo-90
Form Number 68-0066-3
@Honeywell Inc. 1990
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