Union Steam GWA, Руководство пользователя

Страница: 12 / 12

12
Part Number 550-110-726/0703
GWA/GWI/GWS Gas-Fired Water Boilers – User’s Information Manual
W-T
8201 W. Calumet Rd.
Milwaukee, WI 53223
❏
Troubleshooting
Troubleshooting — Common problems and possible solutions
Symptom Common Causes Possible Corrections
Rapid cycling —
boiler turns on and
off frequently Thermostat installed where
drafts or heat affect reading Locate thermostat on inner wall away from heat sources or cool drafts.
Heat anticipator in thermostat
adjusted incorrectly Adjust thermostat per manufacturer's instructions.
Incorrect limit setting Set limit according to system needs. Maximum setting is 220˚F. Increase limit
setting to decrease cycling.
Insufficient water flow through
boiler Check all valves to and from boiler. Return to proper setting.
Confirm circulator size.
Frequent release of
water through relief
valve Expansion tank sized too small Call qualified service technician to check expansion tank operation and size.
Flooded expansion tank Call qualified service technician to check expansion tank operation.
Inoperative limit control Call qualified service technician to replace limit control.
Need to frequently
add makeup water
Leaks in boiler or piping Have qualified service technician repair leaks at once to avoid constant use of
makeup water. Makeup water can cause mineral deposits which, in turn, can
cause boiler section failure. Do not use petroleum-base stop-leak compounds.
Black water condition
Oxygen corrosion due to leaks in
boiler and piping Have qualified service technician repair at once. Keep pH of water between 7.0 to
8.5.
Popping or
percolating noise
heard in boiler Mineral deposits in sections due
to constant use of makeup water Call qualified service technician to de-lime boiler, if necessary. In some cases,
deposits will be too heavy to remove with de-liming procedures.
Have qualified service technician repair leaks to eliminate need for constant
makeup water.
Incorrect pH of boiler water Call qualified service technician to check pH level and correct. pH should be
maintained between 7.0 to 8.5.
Insufficient water flow through
boiler Check all valves to and from boiler. Return to proper setting.
Confirm circulator size.
Metal flakes found in
vent outlet or vent —
flueway corrosion
Contaminated combustion air
supply — See page 2 in this
manual. Remove any contaminating products. See page 2 in this manual.
Provide outside air for combustion. Kit available through local distributor. Have
qualified service technician pipe-up kit.
Condensation of combustion
gases in boiler sections Have qualified service technician inspect system piping and controls to verify
proper regulation of return water temperature.
Some radiators or
baseboard units do
not heat or are noisy Air in system Bleed air from system through air vents in radiators or baseboard units.
Low system pressure Fill to correct pressure.
Check for leaks in boiler or piping. Have qualified service technician repair at
once.
High limit set too low Adjust high limit to higher setting.