Honeywell Y343B1002 User Manual

Honevwell
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-l IGNITION
CABLE.
DEPENDABLE BURNER IGNITION
0 Spark generated by electronic module and
internal step-up transformer.
SOLID STATE DESIGN
17 Compact, solid state components provide
accurate, long-lasting performance.
0 No mechanical friction or wear.
MAXIMUM OPERATING SAFETY
0 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.
0 Open or short circuit in any electronic com-
ponent results in safety shutdown.
USES FLAME RECTIFICIATION PRINCIPLE
0 Any false flame signal, including electrical
short or ground, results in safety shutdown.
0 Ignition is started, main burner is ignitied,
burner flame is proved and continuously
monitored during main burner-on period. lg-
nition spark is discontinued when flame is
proved.
CONVENIENT REMOTE
RESTART PROCEDURE
0 After safety shutdown, equipment must be
manually reset from remote thermostat or
temperature controller.
0 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
0 Permits use of 24 V thermostat for op-
timum temperature control.
0 Reduced wiring costs - both on appliance
and on job.
GAS VALVE CONTROL
0 S87D internal relay switches the gas valve
on and off.
0 System can be used with a P-stage gas
valve, if desired.
ALARM CONTROL
El Optional alarm circuit provides 24 Vat for
an automatic visual or audible signal if any
part of system malfunctions and causes a
lockout.
L.H.
Form Number
68-0014
1-630 0
Honeywell Inc. 1983