Slant/Fin VSPH-180 Vsph Boiler Sequence Of Operation, VICTORY VSPH Models, Inducer Blower On

VICTORY VSPH Models 21

VSPH BOILER SEQUENCE OF OPERATION

THERMOSTAT CALLS FOR HEAT

CIRCULATOR ON

NO BOILER WATER TEMPERATURE IS

BELOW HIGH LIMIT SETTING?

YES

PRESSURE SWITCH CONTACTS PROVED			NO
	OPEN WITHIN 45 SECONDS?
		YES
	INDUCER (BLOWER) ON

CONTROL LOCKOUT.

POWER AND

PRESSURE

SWITCH LED’S

FLASHING.

1 HOUR WAIT

PERIOD.

4 TIMES RE-TRIALS

FOR IGNITION

CONTROL RE-INSTATE TRIAL FOR IGNITION WITH 30 SECONDS INTER-PURGE

PILOT LIGHTS AND YES FLAME SENSED?

NO

CONTROL LOCKOUT

FLAME LED FLASHING. 1/2 HOUR WAIT PERIOD

PRESSURE SWITCH CONTACTS CLOSED			NO
	WITHIN 5 MINUTES?
		YES
	30 SECONDS PRE-PURGE PERIOD

TRIAL FOR IGNITION-15 SECONDS

PILOT VALVE OPENS. IGNITION SPARK STARTS.

NO	PILOT LIGHTS AND FLAME IS SENSED
	DURING TRIAL FOR IGNITION?
		YES

SPARK OFF. MAIN VALVE OPENS. BOILER HEATING PERIOD

STARTS

CONTROL CONTINUOUSLY MONITORS THERMOSTAT, HIGH

LIMIT, PRESSURE SWITCH AND FLAME SENSOR.

THERMOSTAT CALLS FOR HEAT ENDS.

CIRCULATOR OFF, PILOT AND MAIN VALVE CLOSE.

15 SECONDS POST PURGE

BOILER WAITS FOR NEXT CALL FOR HEAT.