Dunkirk XEB-2 Installation Instructions Manual page 27

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. Split the
silicone seal on the flue collector and the clean
out plates with a razor knife. Remove flue collector.
Remove clean out plates by tapping upwards on
the bottom of the plate with a hammer. Remove
loose silicone sealant from sections, flue collector,
and clean out plates. Clean passageways
between sections with a flexible handle wire brush
and a straightened out wire coat hanger. Remove
dirt from the bottom of the boiler and from
between sections by vacuuming. Make sure all
flame ports in burners are open and clear. Shake
out or blow out all loose dirt in burners. Reassemble
all parts. Seal flue collector and clean out plates to
sections with silicone sealant (400 ° F RTV silicone
sealant or equivalent). Reseal seams between
adjacent sections where necessary. All joints must
be airtight. Be sure to check tightness of pilot
connections and condition of burner flames after
reassembly (see Figure 16). Be sure vent pipe
connections to chimney are secure and no
obstructions are present.
BLOWER
The blower motor features a permanently lubricated
ball bearing construction. Lubrication is not
required.
CIRCULATOR PUMP ISOLATION VALVES
The isolation valves in the circulator pump flanges
should be operated manually once or twice per
year to prevent the valves from becoming stuck in
the open position. Rotate the valves from the open
position to the closed position and back to the
open position.
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