FULTON Vantage VTG Series Installation And Operation Manual page 78

MAINTENANCE
PROBLEM
Main flame fails
Boiler fails while
modulating
Poor combustion
Manual Reset limit device
trips
Power outage to the boiler
room
Gas Pressure alarm is
annunciated
High water temp alarm is
annunciated
4-10
CAUSE
Gas actuator not set properly
Air actuator not set properly
Flame detector failure
Insufficient Gas Supply
Air supply blocked (direct vent only)
Gas actuator not set properly
Air actuator not set properly
Air supply blocked (direct vent only)
Gas actuator not set properly
Air actuator not set properly
Manual Reset Limits include: Flame safeguard, high
or low gas pressure, high temperature limit
Entire boiler system is disabled and de-energized.
Insufficient gas pressure for safe and proper
operation of the boiler. This shuts down the burner.
When gas pressure is restored, the annunciated
alarm will remain on and the boiler will remain
locked out until the gas pressure switch is manually
reset.
Boiler water has exceeded both the operating and
high-limit temperature. When the water temperature
falls below the high-limit temperature, the boiler will
remain locked out until the controller is manually
reset.
VTG-IOM-2016-1214
CHECK
1. Verify the last elbow gas pressure matches the
start up report.
2. Adjust actuator setting.
1. Verify the over burner pressure matches the start
up report.
2. Adjust actuator motor.
1. Visually verify the flame through the sight glass.
2. Remove flame detector and visually verify the
flame through the scanner tube.
3. Verify the flame detector eye is not dirty.
4. Replace scanner.
1. Verify the manual shut down valves are open,
allowing gas flow through the gas train.
2. Adjust incoming gas pressure to match the start
up report.
Verify venting is not obstructed.
1. Verify the last elbow matches the start up report.
2. Adjust actuator setting.
1. Verify the over burner pressure matches the start
up report.
2. Adjust actuator setting.
Verify venting is not obstructed.
Adjust actuator setting.
Adjust actuator setting.
DO NOT reset without determining and correcting
the cause.
When power has returned, the boiler will have to be
manually reset, as it will be in the lockout position
Locate cause and correct. Qualified service
personnel must correct the problem before
restarting the boiler.
Locate cause and correct. Once the control is reset,
the sequence returns to normal operation provided
that the other limits are satisfied.
SECTION 4
© The Fulton Companies 2016