Honeywell Y343B1002 User Manual
Honeywell
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Honeywell
THE
Y343B
IGNITION
PACKAGE
PROVIDES
DIRECT
SPARK
IGNITION
(DSI)
FOR
GAS
HEATING
SYSTEMS.
THE
PACKAGE
IN
CLUDES
THE
S87D
ELECTRONIC
MODULE,
Q354A FLAME SENSOR, Q347A SPARK IG
NITER-SENSOR
AND
392286-1
IGNITION
CABLE.
DEPENDABLE BURNER IGNITION
□ Spark generated by electronic module and
internal step-up transformer.
SOLID STATE DESIGN
□
Compact, solid state components provide
accurate, long-lasting performance.
□ No mechanical friction or wear.
MAXIMUM OPERATING SAFETY
□ Proves presence of flame on burner igni
tion, then protects against burner flame-out
and interruption of electric power or gas sup
ply during run cycle.
□ Open or short circuit in any electronic com
ponent results in safety shutdown.
USES FLAME RECTIFICIATION PRINCIPLE
□ Any false flame signal, including electrical
short or ground, results in safety shutdown.
□ Ignition is started, main burner is ignitied,
burner
flame
is
proved
and
continuously
monitored during main burner-on period. Ig
nition spark is discontinued when flame is
proved.
CONVENIENT REMOTE
RESTART PROCEDURE
□ After safety shutdown, equipment must be
manually reset from remote thermostat or
temperature controller.
□
System
automatically
locks
out
after
trial-for-ignition. If malfunction exists, correc
tion must be made before system is manually
reset.
LOW VOLTAGE CONTROL CIRCUIT
□ Permits use of 24 V thermostat for op
timum temperature control.
□ Reduced wiring costs — both on appliance
and on job.
GAS VALVE CONTROL
□ S87D internal relay switches the gas valve
on and off.
□ System can be used with a 2-stage gas
valve, if desired.
ALARM CONTROL
□ Optional alarm circuit provides 24 Vac for
an automatic visual or audible signal if any
part of system malfunctions and causes a
lockout.
Y343B1002
L.H.
1-83»
Form Number
68-0014
©Honeywell Inc. 1983
Document Outline
- S87D CONTROL MODULE
- Q347A SPARK IGNITER-SENSOR
- Q354A FLAME SENSOR
- 392286-1 IGNITION CABLE
- GAS CONTROLS
- AUXILIARY CONTROLS
- S87D CONTROL MODULE
- Q347A SPARK IGNITER-SENSOR
- WIRING
- Q354A FLAME SENSOR
- AUXILIARY CONTROLS
- S87D CONTROL MODULE
- Q347A SPARK IGNITER AND IGNITION CABLE
- Q354A FLAME SENSOR
- START SYSTEM
- CHECK SAFETY LOCKOUT
- RESET S87 AFTER SAFETY LOCKOUT
- CHECKOUT
- OPERATION
- PRELIMINARY CHECK
- S87D COMPONENT CHECKS
- IGNITION CABLE
- GROUNDING CONNECTIONS
- FLAME SENSOR CIRCUIT
- LOW OR UNSTEADY FLAME CURRENT
- CHECKOUT AFTER SERVICE