Fulton Vantage (VTG) Fully Condensing Hydronic Boiler - Manual (Page 63)

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SECTION 4
VTG-IOM-2013-0815
MAINTENANCE
4-11
PROBLEM CAUSE CHECK
Main fl ame fails Gas actuator not set properly 1. Verify the last elbow gas pressure matches the
start up report.
2. Adjust actuator setting.
Air actuator not set properly 1. Verify the over burner pressure matches the start
up report.
2. Adjust actuator motor.
Flame detector failure 1. Visually verify the fl ame through the sight glass.
2. Remove fl ame detector and visually verify the
fl ame through the scanner tube.
3. Verify the fl ame detector eye is not dirty.
4. Replace scanner.
Insuffi cient Gas Supply 1. Verify the manual shut down valves are open,
allowing gas fl ow through the gas train.
2. Adjust incoming gas pressure to match the start
up report.
Gas Filter Blocked Replace gas fi lter.
Air supply blocked (direct vent only) Verify venting is not obstructed.
Boiler fails while
modulating
Gas actuator not set properly 1. Verify the last elbow matches the start up report.
2. Adjust actuator setting.
Air actuator not set properly 1. Verify the over burner pressure matches the start
up report.
2. Adjust actuator setting.
Air supply blocked (direct vent only) Verify venting is not obstructed.
Poor combustion Gas actuator not set properly Adjust actuator setting.
Air actuator not set properly Adjust actuator setting.
Manual Reset limit device
trips
Manual Reset Limits include: Flame safeguard, high
or low gas pressure, high temperature limit
DO NOT reset without determining and correcting
the cause.
Power outage to the boiler
room
Entire boiler system is disabled and de-energized. When power has returned, the boiler will have to be
manually reset, as it will be in the lockout position
Gas Pressure alarm is
annunciated
Either insuffi cient gas pressure or the gas pressure
to the manifold is too high 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.
Locate cause and correct. In the event of a high
gas manifold pressure condiƟ on, qualifi ed service
personnel must correct the problem before
restarƟ ng the boiler.
High water temp alarm is
annunciated
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.
Locate cause and correct. Once the control is reset,
the sequence returns to normal operation provided
that the other limits are satisfi ed.