Sequence Of Operation Of Galaxy Boilers - Slant/Fin Galaxy GG Series Installation And Operating Instructions Manual

14
SEQUENCE OF OPERATION FOR GALAXY BOILERS
CIRCULATOR IS OFF UNTIL
BOILER WATER TEMPERATURE
REACHES 120˚F
L.P. PROPANE GAS
(S8600M AND S8670E)
IGNITION TRIAL CONTIN-
UES FOR 90 SECONDS.
AFTER TRIAL FOR IGNI-
TION, SYSTEM SHUTS OFF.
AFTER 5 MINUTES MOD-
ULE RE-INSTATES TRIAL
FOR IGNITION. IF PILOT
FLAME NOT ESTABLISHED,
IGNITION TRIAL, SYSTEM
SHUT-OFF AND 5 MINUTES
WAIT SEQUENCE REPEATS
CONTINUOUSLY.
SPARK GENERATOR OFF. MAIN VALVE OPERATOR OPENS. MODULE MONITORS PILOT FLAME.
WHEN THERMOSTAT IS SATISFIED OR WHEN HIGH LIMIT, LOW LIMIT, OR LOW WATER CUT-OFF CONTACTS ARE OPEN,
VALVE OPERATORS CLOSE, VENT DAMPER CLOSES. CIRCULATOR OFF. SYSTEM GOES TO STANDBY.
THERMOSTAT CALLS
FOR HEAT
HIGH-LIMIT CONTACTS CLOSED?
VENT DAMPER RELAY ENERGIZED.
VENT DAMPER MOTOR MOVES OPEN VENT DAMPER.
IGNITION CONTROL ENERGIZED
SPARK GENERATOR MODULE POWERED
S8600F OR S8600M: IGNITION SPARK STARTS AND PILOT VALVE OPERATOR OPENS.
S8670E: IGNITION SPARK AND PILOT VALVE OPERATOR DELAYED FOR 30-70 SECONDS.
NO
THE PILOT FLAME ESTABLISHED?
LOW LIMIT (FOR BOILERS WITH
TANKLESS COIL) CALLS
OR
YES
END SWITCH CLOSES.
YES
FOR HOT WATER
NO
NO
GALAXY
NO FURTHER
ACTION
NATURAL GAS (S8600F)
IGNITION SPARK CON-
TINUES. PILOT VALVE
REMAINS OPEN UNTIL
SYSTEM IS RESET.