IV. Boiler Cleaning
1.
CLEAN THE FIRETUBES
A. For access to reside of boiler, pull two halves of
Burner Swing Door Interlock wiring harness apart,
remove hex nuts holding door closed and open
swing door.
B. Prior to cleaning boiler, lay a protective cloth or
plastic over combustion chamber liner.
C. Using a 1 1/2" diameter wire brush (30" handle),
clean retubes. Measure 15" from end of brush
opposite handle, and mark handle. DO NOT allow
this mark to go past front end of retube during
cleaning, or brush will hit rear door insulation
piece.
2
. CLEAN THE COMBUSTION CHAMBER
Using wire or ber bristle brush, clean inside of
combustion chamber. DO NOT let brush hit rear door
insulation piece or combustion chamber liner.
3
. AFTER CLEANING
Vacuum debris inside bottom of rear door, remove
protective cloth, and vacuum remaining reside of
boiler as necessary. BE CAREFUL not to damage liner
or rear door insulation piece. Inspect front and rear door
insulation pieces, front door gaskets and combustion
chamber liner for damage. Replace any damaged
pieces.
4
. CLOSE BOILER
CAUTION: Do not start burner unless burner swing door is
securely closed. Close door, install hex nuts, and tighten
securely. Door should be parallel to tubesheet when
viewed from top and sides. Reconnect two halves of
Swing Door Interlock.
WARNING
The boiler must be connected to an approved
chimney in good condition. Serious property
damage could result if the boiler is connected
to a dirty or inadequate chimney. The interior of
the chimney ue must be inspected and cleaned
before the start of the heating season and
should be inspected periodically throughout the
heating season for any obstructions. A clean and
unobstructed chimney ue is necessary to allow
noxious fumes that could cause injury or loss
of life to vent safely and will contribute toward
maintaining the boiler's efciency.
WARNING
All boiler cleaning must be completed with burner service switch turned off. Boilers equipped with burner
swing door have a potential hazard which can cause severe property damage, personal injury or loss of
life if ignored. Before opening swing door, turn off service switch to boiler to prevent accidental ring of
burner outside the combustion chamber. Be sure to tighten swing door fastener completely when service is
completed.
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