Slant/Fin VHS-180 - Manual (Page 23)

V
ICTORY
II
VHS Models
THERMOSTAT CALLS FOR HEAT
CIRCULATOR ON
IGNITION SPARK STARTS AND PILOT
VALVE OPERATOR OPENS
THERMOSTAT CALLS FOR
HEAT ENDS
CIRCULATOR OFF.
PILOT AND MAIN VALVE CLOSE.
INDUCER OFF
INDUCER (AIR BLOWER) ON
PILOT FLAME ESTABLISHED?
WAIT FOR NEXT CALL FOR HEAT
CIRCULATOR
CONTINUES TO
RUN
NATURAL GAS-S8600F
IGNITION SPARK CONTINUES.
PILOT VALVE REMAINS OPEN
UNTIL SYSTEM IS RESET.
SPARK GENERATOR OFF.
MAIN VALVE OPENS. MODULE
MONITORS PILOT FLAME
NO
NO NO
NO
YES
YES
YES
Victory II Boiler Sequence of Operations
BOILER WATER TEMPERATURE
IS BELOW HIGH LIMIT SETTING?
AIR PROVING SWITCH
PROVED CLOSED?
23
PROPANE GAS-S8600H
IGNITION SPARK CON-
TINUES FOR APPROXI-
MATELY 90 SECONDS.
IF PILOT FLAME NOT
ESTABLISHED, SYSTEM
LOCKS OUT; SYSTEM
MUST BE MANUALLY
RESET.