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23
15 - MAINTAINING YOUR BOILER
BURNERS
Beginning of heating season visually check pilot and main
burner fl ames. See Figure 16.
SAFETY RELIEF VALVE
Refer to page 7 for important information. To test safety
relief valve refer to valve manufacturer’s instructions
packaged with relief valve. Call Technical Support if
manufacturer’s instruction are not located.
EXPANSION TANK
Tank may become waterlogged, or may receive excess
of air. Frequent automatic opening of safety relief
valve indicates water logging. High boiler temperature
accompanied by unusually low radiation unit temperature
(and “knocking”) indicates excess air in tank.
To correct:
1.
Close valve between boiler and tank. Drain tank until
empty.
2.
Check all tank plugs and fi ttings. Tighten as necessary.
3.
Open valve between boiler and tank. Water will rise to
normal height in tank if you have automatic fi ll valve
(otherwise, manually refi ll system).
BOILER FLUE PASSAGES
Recommend following checked annually by qualifi ed service
agent.
• fl ue passages
• burner adjustment
• operation of controls
Before start of each season (or whenever system has been
shut down for some time) recheck whole system for leaks
and recheck boiler and vent pipe for leaks. Replace or patch
any boiler seals that are faulty.
VENT PIPE
Venting and piping should be checked at least once a
season. If vent piping shows any sign of leaking, replace
immediately.
WATER SYSTEM
If system is to remain out of service during freezing weath-
er, always drain it completely (water left in to freeze will
crack pipes and/or boiler).
CLEANING YOUR BOILER AND BURNERS
Flue passages between sections should be examined yearly
and cleaned if necessary.
To clean:
• Remove burners, pilot, and vent pipe.
• Remove top and front jacket panels.
• Remove two screws attaching intermediate front panel
to left and right side jacket panels.
• Remove draft diverter and intermediate front panel
together.
• Carefully remove cerafelt gasket strips.
• Clean passageways between sections with fl exible
handle wire brush. Remove dirt from bottom of boiler
and from between sections by vacuuming.
• Verify all fl ame ports in burners are open and clear.
Shake out or blow out all loose dirt in burners.
• Reseal seams between adjacent sections as necessary
with 400
°
F RTV silicone sealant.
• Reassemble all parts.
• Verify tightness of pilot connections and condition of
burner fl ames after reassembly. See Figures 16 and 17,
pages 21.
• Verify vent pipe connections to chimney are secure and
no obstructions are present.
HOUSEKEEPING
• Keep boiler area clear and free from combustible
materials, gasoline and other fl ammable vapors and
liquids.
• Keep boiler area clear of debris and other materials
obstructing fl ow of combustion and ventilation air.