Harman Stove Company PB 105, Installation & Operating Manual

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Burnpot cleaning:
The burnpot should be cleaned no less than once a week.
For best operation the burnpot should be cleaned every time the
hopper is filled with pellets. The fire does not have to be out to
scrape the burnpot although it is recomended the boiler be on
minimum burn at the time of cleaning.
Note: Scraping can be done while in operation if per-
formed throug the firebox door opening. See Fig. 17
Use the flat end of the scraper provided to scrape down
over the holed surface of the burnpot grate. See Fig. 18. It is
not necessary to clean out the scrapings from this cleaning be-
cause they will be pushed out the next time the auger operates.
Note: Make a special effort to scrape the bottom in-
side corners of the burnpot where the auger tube enters the
burnpot. Carbon deposits can build up over time in this area
that may cause a restriction to the flow of pellets into the
burnpot.
Note: An old long shank screwdriver with the end sharp-
ened is an ideal aid in the removal of these deposits.
Cleaning the burnpot air chamber:
This area only needs to be cleaned twice a heating season,
unless excessive buildup is noticed during scheduled cleanings.
There is a cover on the front of the burnpot to gain access
to the air chamber and igniter. The cover is held into place by
two thumb screws. Loosen the thumb screws and remove the
cover. See Fig. 19. The air chamber can be cleaned of any ash
that has fallen through the holes during operation and cleaning.
Also at this time, remove the feeder assembly cover and remove
any fines that may have accumulated.
NOTE: ALWAYS REMEMBER TO CLOSE THE
CLEANOUT COVER AFTER CLEANING.
Feeder Chamber (Fig. 20):
This chamber may get a buildup of fines from the feeder
mechanism movement. This area should be checked and cleaned
at least once a year.
To remove the feeder cover:
• Lossen the 5/16" wing nut.
• Slide the cover off of the threaded stud and lift upward.
• Inspect and clean the inner chamber if necessary. See Fig. 20.
• Reinstall the cover making certain it is centered on the feeder
body and tighten as tightly as you can by hand.
Fig. 18
Maintenance
Fig. 17
Fines cleanout cover
Fig. 19
Scrape burnpot to remove any carbon
build-up that may have occurred
Scraping can be done while in operation if
performed through the firebox door
opening
Fig. 20
Fines area
Feeder cover