VMP-IOMM-2018-2
Fulton Ltd
Page 61
TROUBLESHOOTING - 6
Problem
Cause
Remedy
6. Poor Combustion
1. Refractory bricks
Check the bricks are not plugged with soot or broken into
pieces. Clean and replace as required.
2. Stainless Steel Ring
Check the ring is present (40J - 60J models) and fits tightly
against the furnace wall.
3. Main Air Adjustment
Check air adjustment. Air/fuel mixture may be off.
Open main air gate until the flame brushes the furnace
wall.
4. Secondary Air Adjustment
Check main air adjustment, reset as required and secure
in place.
Check CO
2
and O
2
levels.
5. Draft
Check draft with a gauge. Draft should be -.05 to -.10 mbar
with the burner off, or -.10 to -.15 mbar when operating.
A barometric damper may need to be installed.
6. Dirty Flue
Check flue for carbon build-up or blockage.
Clean the flue.
7. Negative Room Pressure
Ensure there are no exhaust fans running in the boiler
room.
8. Dirty Fan
Check fan for obstructions, clean as required.
7. Burner Back Fires
1. Refractory Bricks
Check the bricks are not plugged with soot or broken into
pieces. Clean and replace as required.
2. Ignition Electrodes
Check for cracks in porcelain,if found replace the
electrode. Check electrodes for carbon build-up.
Clean as required.
Check settings, adjust if required.
3. UV Detector
Check the detector is located correctly and clean.
4. Draft
Check draft with a gauge. Draft should be -.05 to -.10 mbar
with the burner off, or -.10 to -.15 mbar when operating.
A barometric damper may need to be installed.
5. Negative room pressure
Ensure no exhaust fans are running in the boiler room.
6. Air Settings
Check air adjustment. Air may be blowing flame away from
the UV detector. Open primary air until fire brushes the
furnace wall.
7. Gas Supply
Check gas pressure coming into the gas train, if low
contact the gas supplier.
Check the setting on the gas valve regulator, adjust as
required.
8.
Dirty flue
Check flue for Carbon build-up or blockage. Clean flue
passages with brush.
6.1
TROUBLESHOOTING
GAS BOILER
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