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Firebox Maintenance
Cleaning
This cleaning should be done after each ton of pellets used.
The frequency of this cleaning will be directly related to the
quality and the ash content of the pellets being used. Keep
in mind that the cleaner the heat exchanger surface is kept,
the higher the heat transfer efficiency will be.
Due to it’s ease of restarting it is recommended that the boiler
be
OFF
and
COOl
before cleaning.
Start by actuating the (3) heat exchanger cleanout rods by
pulling and pushing these rods vigorously several times. This
action will remove any fly ash built up on the heat exchanger
tubes. This can also be done at any time during the operation
of the boiler to maintain higher efficiencies. Make sure that
these rods are pushed in when cleaning is completed.
Cleaning steps
1. Open the hopper swing plate to access burnpot and also
the firebox. With a wisp brush, wire brush, stiff bristled
paint brush or a soot vaccum, clean the firebox walls and
any fly ash that has accumulated on the ledges of the
burnpot, or burnpot opening. At this time you can scrape
and clean the burnpot and fines cleanout area.
2. Open firebox door and vacuum ash from ledges and ash
deflector. You can also clean the firebox door viewing
glass using a typical glass cleaner and soft cloth.
3. Open the ash door and remove the ash pan. Dispose of
any ash that has accumulated in the ash pan as well as
any fly ash from within the ash pan area.
4. Remove the (4) thumbscrews on the secondary ash
chamber access plate and remove it to access the
secondary ash chamber. Remove all fly ash from this
area. This process should be done as needed.
5. Inspect all sealing gaskets to ensure a proper seal and
re-install all components removed for cleaning.
NOTE: To minimize the amount of stress placed on the
hopper swing plate hinges, opening of the hopper swing
plate should be done with the least amount of fuel in the
hopper as possible.
Heat Exchanger Cleanout Rod Handles
Firebox Door
Heat Exchanger Tube
Secondary Ash
Chamber Access Plate
Ash Door
Firebox Wall
Fines Cleanout Cover
CAUTION
!
Cleanout of the heat exchanger, flue pipe, chimney,
and combustion blower fan housing, is especially
important at the end of the heating season to minimize
corrosion during the summer months, caused by
accumulated ash.
Summary of Contents for PB 105
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