Fulton Classic ICX or FB-F Vertical Tubeless Boilers (Hot Water), Gas_Oil Fired - Manual (Page 38)

© The Fulton Companies 2014
MAINTENANCE
ICW-IOM-2014-0410
SECTION 4
4-8
!
WARNING
Extreme caution must be exercised
when checking a failing transformer.
They are capable of producing very
high voltages which may result in
personal injury and death.
3. With microampmeter in place, turn power to the panel ON.
4. During the ignition trial period, determine if the microampmeter exceeds
#1. If yes, it is likely picking up ignition interference and realignment is
necessary. It may be necessary to place a reduced scanner orifi ce plug into
the scanner eye area.
5. Repeat steps 1 - 3 until a reading of #1 or less is achieved on the
microampmeter.
6. Turn power OFF. Hook the wire up again, and turn power ON. Start boiler
to ensure the safety light is off .
Procedure for Removing/Cleaning the Burner
Perform the following steps:
1. Remove all bolts that connect the transition elbow to the burner plate, and
to the scroll tube.
2. Pull burner out of unit by fl ange.
3. Inspect burner and wipe off (do not scrub or use wire brush) any soot or
foreign material that may have accumulated. If available, use compressed
air to clear the burner. Wipe out the inside of the burner with a clean cloth.
4. Reverse removal steps for reinstallation of the burner assembly.
5. Test fi re the boiler and use a combustion analyzer to ensure that the fuel/
air ratio is set correctly throughout the range. Refer to the Fulton factory
test fi re sheet for combustion settings.
Procedure for Controls Voltage Transformer
Inspection
The controls voltage transformer supplies a suitable power supply to the controls
circuit in situations where the mains supply voltage diff erent than the controls
voltage. The controls voltage can vary depending on application. Refer to the
electrical print supplied with the boiler to determine the controls voltage.
To verify controls transformer voltage, use a DMM (digital multi-meter or
equivalent):
1. Measure the voltage on the secondary side of the transformer.
2. Compare this voltage to the voltage stated on the electrical drawing.
Typical 120VAC controls allow for a +10% and a -15% voltage fl uctuation.
3. Replace the controls voltage transformer as necessary.