UTICA BOILERS UB90 125 Installation Manual And Operating Instructions page 30

DETAILED SEQUENCE OF OPERATION
END OF NORMAL SEQUENCE OF OPERATION
THERMOSTAT ENDS CALL FOR HEAT.
GAS VALVE AND CIRCULATOR PUMP ARE DE-ENER-
GIZED, VALVE AND FLAME LIGHTS GO OUT.
BLOWER RUNS FOR 30 SECONDS POST PURGE,
PURGE LIGHT IS ON.
BLOWER IS DE-ENERGIZED AFTER 30 SECONDS,
PURGE LIGHT SHUTS OFF.
BOILER STAND BY FOR NEXT CALL FOR HEAT.
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