Sequence Of Operation - Space-Ray LTU SERIES Installation And Operation Instructions Manual

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SEQUENCE OF OPERATION

INSUFFICIENT AIRFLOW —
SYSTEM SHUTS OFF
(RED light OFF)
IF NO SPARK,
SYSTEM GOES INTO LOCKOUT
(AMBER light OFF)
IF POWER INTERRUPTED,
SYSTEM SHUTS OFF UNTIL
POWER IS RESTORED
(ALL lights OFF)
NOTES:
-- Insufficient airflow indicates defective draft inducer or restricted flue.
-- Corrective action and system reset are necessary.
-- If burner does not re-ignite, system goes into lockout. Corrective action and system reset are necessary.
-- Octagons represent actions resulting from possible malfunction.
Form #43155260
Mar–05
THERMOSTAT (or Controller) CALLS FOR HEAT
(GREEN light ON)
DRAFT INDUCER STARTS
(Purge Period)
DIAPHRAGM AIR SWITCH ON
(RED light ON)
SPARK ON
(AMBER light ON)
BURNER IGNITES —
SPARK CUTS OFF
THERMOSTAT (or Controller)
SATISFIED, BURNER OFF
(ALL lights OFF)
–39–
SYSTEM GOES INTO LOCKOUT
VALVE OPENS
(AMBER light ON)
IF FLAME-OUT OCCURS, SPARK
RETURNS FOR RE-IGNITION
FAILURE TO IGNITE —
(AMBER light OFF)