Weil-McLain GOLD CGt Manual page 54

GOLD CGt Gas-Fired Water Boiler — Boiler Manual
11d
Troubleshooting — common problems
Common Problems Common Causes
Rapid cycling — burner
turns on and off
frequently.
Need to frequently add
makeup water.
Popping or percolating
noise heard in boiler.
Black water condition.
Frequent release of
water through relief
valve.
54
Thermostat installed where
drafts or heat affect reading.
Heat anticipator in
thermostat adjusted
incorrectly.
Incorrect high limit setting.
Leaks in boiler or piping.
Mineral deposits in sections
due to constant use of
makeup water, or incorrect
pH.
Oxygen corrosion due to
leaks in piping.
Expansion tank sized too
small or water-logged.
Possible Corrections
Locate thermostat on inner wall
away from heat sources or cool
drafts.
Adjust heat anticipator to match
current draw. Refer to boiler
wiring diagram.
Have qualified service
technician increase limit setting
to decrease cycling. Maximum
setting 220˚F.
Have qualified service
technician repair leaks at once
to avoid constant use of makeup
water.
Have qualified service
technician repair leaks at once
to avoid constant use of makeup
water and check pH (between
7.0 and 8.5).
Have qualified service
technician repair leaks at once
to avoid constant use of makeup
water and check pH (between
7.0 and 8.5).
Have qualified service
technician check expansion
tank operation.
Part Number 550-110-290/0501