Harman Accentra User manual

How to Clean the Harman Accentra
Here are step-by-step instructions for cleaning your Harman Accentra
Pellet Stove. Please read through this guide before starting. These
instructions are to be used in conjunction with the owner’s manual that
came with your stove. If you have any questions about the procedure
please don’t hesitate to call your local dealer.
In order to maintain top efficiency it is important to clean and vacuum
the inside of the stove 3 or 4 times per burn season or once per ton of
pellets burned (you will know you have burned a ton of pellets when the
ash pan is full). The stove is designed to be very easy to clean, it should
take about an hour to an hour and a half to do a good job.
A thorough cleaning is required at the end of each heating season. Keep in mind that
cleaning both your insert and venting system is essential. Cleaning boosts heat output and keeps
the stove running at maximum efficiency. Many Harman dealers offer annual cleaning services
for their customers.
TOOLS YOU WILL NEED:
Dust Mask & Safety Goggles Paper towels
Shop vacuum w/fine dust (HEPA) filter Rubber gloves (soot really gets into pores)
Standard socket set or nut driver set Drop cloth
Tooth brush Flashlight or drop light
Flexible brush that came with your stove 3” to 4” paintbrush for cleaning
3 in. flexible brush (for vent pipe) Small putty knife
Burn pot scraper (included w/stove) Hearth glass cleaner
TIPS BEFORE YOU START:
Be sure the stove is completely out and cool (and unplugged from electrical power!).
The stove must be completely out before cleaning. Every part must be cool to
the touch, including the pellets that are left in the burn pot. Live pellets are a
fire hazard – especially if they get sucked into a vacuum cleaner. Every year
there are stories of house vacuums catching fire by inadvertently sucking up hot
ashes. Worse still this can be the source of a house fire!
Hot ashes should be stored in a metal container with a tight fitting lid. When the
ashes are completely out they can be used as a soil conditioner for your lawn or
garden.
Wear a dust mask! This is important! Don’t be foolhardy when it comes to
protecting your lungs (Fig. 1). Wear a mask and protective goggles. Professional
chimney sweeps wear both while performing cleaning tasks.
Fig. 1

STEP #1: PREPARE THE WORK AREA
Start by placing a drop cloth on the floor in front of your stove.
Alternatively you can use newspaper. Keep your tools on the drop
cloth so you can wrap them in it and take them outside for cleaning
when you are done.
STEP #1: REMOVE SOOT DEPOSITS FROM WITHIN THE BURN POT WITH THE VACUUM.
Remove the flame guide and vacuum the ash from the burn pot and above the burn pot (Fig. 2).
STEP #2: CLEAN THE BURN POT USING THE SCRAPER PROVIDED
Use the flat end of the scraper to remove the carbon from the burn pot (Fig. 3). Alternatively use a
hammer and a straight tip screw driver to tap the deposits loose. When the burn pot has been
scraped, use a vacuum to remove the ash and carbon deposits.
Remove the ash pan from the stove (Fig. 4), dump out the ashes and clean out the interior and
exterior. Vacuum the lower area of the firebox while the ash pan is removed.
STEP #3: CLEAN ASH FROM INSIDE THE BURN POT
Remove the clean out plate under the burn pot by loosening
the two wing nuts holding the plate in place (Fig. 5). You
many need to use pliers to loosen the wing nuts initially and
then vacuum ash from the inside of the pot. Use your finger
to brush out any ash that can’t be reached with the nozzle of
the vacuum. After cleaning, be sure the plate is fully closed
before hand tightening the wing nuts.
(Note: You don’t need to tighten the wing nuts with pliers.)
Fig. 2
Fig. 3 Fig. 4
Fig. 5

STEP #4: REMOVE THE HEAT EXCHANGER CHANNEL COVERS
Remove the channel covers from the firebox by the sides of the
“compass”. Turn the swing latches at the upper right and left of the
baffles (Fig. 6) and lift slightly on the cover in order to remove
them.
STEP #5: NEXT REMOVE THE COMBUSTION INTAKE BLOWER COVER
Remove the combustion intake blower cover. The combustion
intake housing assembly is held in place with two swing latches (Fig.
7). Swing each latch until it hangs down away from the retainer
stud. Once the latches are free, swing the right side of the cover out
and clear of the door frame then pull the housing out on a diagonal.
STEP #6: CLEAN THE HEAT EXCHANGER AREA BEHIND THE HEAT EXCHANGER CHANNEL
COVERS AND THE SIDE INTERIOR WALLS.
Using the pointed end of the burn pot scraper (included with the stove)
and scrape the V-shaped accordion style heat exchangers (Fig. 8). This
will not require heavy scraping as the buildup in this area is really light
soot. After scraping the area use the paintbrush and putty knife to clean
the remaining soot in the heat exchanger and the interior walls.
STEP #7: CLEAN THE INSIDE OF THE COMBUSTION BLOWER AREA.
The inside of the combustion blower area will accumulate sooty dust. This needs to be brushed
and vacuumed. The fan (right center of Fig. 9) needs to be carefully cleaned with a light brush
(Fig. 10). Be careful not to bend the fins on the combustion blower fan as this may cause an
imbalance or interference with the inside of the blower housing when it is reassembled.
Fig. 6
Fig. 7
Fig. 8
Figures 9 & 10

STEP #8: VACUUM THE INSIDE OF THE STOVE
You can now do a final brush and vacuum of the inside of the stove. Reinstall the combustion
intake blower cover remembering to swing the latches back in place. Install the cast iron heat
exchanger channel covers remembering to swing the latches back in place on these as well.
Replace the flame guide on the burn pot, replace the ash pan and you are through on the inside.
STEP #9: CLEAN THE INSIDE OF THE PELLET AUGER DRIVE BOX AND A GENERAL
CLEANUP OF THE BACK OF THE STOVE
Start by loosening the screws (highlighted in the pictures) on the back of the stove and sliding the
sheet-metal covers off.
Under the back covers you will find the auger assembly cover on
the left side (as you are facing the rear of the stove ) you will
need to remove the wing nuts on the top and bottom of the cover
(Fig. 13) and remove the cover.
** Tip-You will save yourself from losing wing nuts by holding
your left hand under the cover to catch the wing nuts in case you
drop them while removing them.
After removing the cover, clean out the inside of the
auger housing with a small brush and a vacuum (Fig.
14). You can now clean out the rest of the “engine
housing”.
Replace the auger assembly cover and wing nuts then
the two rear insulated sheet metal covers, tighten the
screws snuggly and you are done with the “engine
housing”.
Figures 11 & 12
Figure 13
Figure 14

STEP #10: SWEEP THE ENTIRE FLUE SYSTEM
It is very important that you inspect and clean your
entire flue system once per year. In order to clean the
flue system you will need to sweep it from its exit point
using rods and an appropriately sized brush (Fig. 15).
You will find a section for cleaning flue systems in
another section of this web-site.
Figure 15