Harman Stove Company The Harman Accentra Pellet Insert - Manual (Page 29)

30 Maintenance - Cleaning
Cleaning the Heat Exchanger
The accordion heat exchanger surfaces are the pri-
mary source of heat transfer into the room. Therefore,
it is very important to keep them clean from flyash and
soot buildup.
•
The heat exchanger surfaces should be cleaned af-
ter approximately every 1 ton of pellets are used.
•
Use the scraper provided to clean all the way into the
point.
•
Note: An old paint brush works well to clean these
surfaces.
• Note: The unit “must be cold” before using anything
other than a wire brush.
•
There are 2 primary air inlet holes on the rear flange
of the burnpot. They should be checked for blockage
and cleaned with a vacuum if necessary. Note: The
bottom of the flame guide has 2 notches that match
the holes.
Cleaning the Heat Exchanger tubes
Using the cleaning brush provided, clean these tubes
after every 1 ton of pellets are used.
These tubes are an important part of the heat ex-
changer. Efficiency will be lost if they are not properly
maintained.
Note: The brust will only extend into the fight side tube
approximatlely 12”, but the left side tube requires the
total length of the brush to be used.
There is a 2" square exhaust tube on each side (lower
left and right corners) of the firebox. They can only be
seen with the cast heat exchanger covers removed.
Fig. 61
Fig. 62
Fig. 63
Primary Air Inlets
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