Installation & Operating Manual
The Harman Accentra Pellet Insert
“Ce manuelest disponibleen Françaissur demande”
R3
SAFETY NOTICE
PLEASE READ THIS ENTIRE MANUALBEFORE YOUINSTALL AND USE YOURNEW ROOM HEATER. FAILURE TO
FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTYDAMAGE, BODILYINJURY, OR EVEN DEATH.
FOR USE IN THE U.S.AND CANADA. SUITABLE FOR INSTALLATION IN MOBILE HOMES
IF THIS HARMANACCENTRA PELLET INSERT IS NOT PROPERLY INSTALLED,AHOUSEFIRE MAYRESULT. FOR
YOURSAFETY, FOLLOWINSTALLATIONDIRECTIONS.
CONTACT LOCAL BUILDING OR FIRE OFFICIALSABOUT RESTRICTIONSAND INSTALLATION INSPECTION
REQUIREMENTS INYOUR AREA.
CONTACT YOUR LOCAL AUTHORITY (SUCHAS MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE
PREVENTION BUREAU,ETC.) TO DETERMINE THENEED FORA PERMIT.
CETTEGUIDE D'UTILISATIONEST DISPONIBLEENFRANCAIS.CHEZVOTRECONCESSIONNAIRE DEHARMANSTOVE
COMPANY.
SAVETHESEINSTRUCTIONS.
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4
Automatic Start Up
Starting First Fire
Igniter Switch to"AUTO" (up position)
Make sure the unit is plugged into a 120 VAC,
60 HZ electrical source. The power light should
betheonly lightlit.
1. Turn Mode Selector to "OFF".
2. Fill hopperwithpellets.1
3. Clean burn potwithscraper, ifnecessary.
See Note 7.
Fig. 1
1"
5
4. If starting after an empty hopper, turn Feed
Adjuster to "TEST" (for one 60 second cycle).2
Thiswill purgepelletsintotheauger tubeandalso
allowyoutocheckthemotorsforoperation.NOTE:
Theauger motor will not operatewith theview
door or ash pan door open.3
4
5. Turn Feed Adjuster to #4.
6. Flip the Igniter Switch up into the "AUTO"
position.
7. Turn the Temperature Dial to desired room
temperature.
8. Turn Mode Selector to Room Temperature or
StoveTemperature.
Fig. 2
1.Fines are small pieces of broken pellets(sawdust). Fines do
not floweasily and often build up on the hopperfunnel bottom
angles. These fines can be pushed into the feeder opening
and then fill the hopper with pellets. As the system works,they
will be burned.
2. The "TEST" cycle will operate the feeder motor for exactly
one minute. Turning to "TEST" again and againmay purge too
much fuel into the burn pot causing excessive smoke on start-
up.
3.Thefirebox low pressure switchwill notallow the augermotor
or the igniter element to operate if the view door is open.
4. Adjust Feed Rate. If this is your first fire or you are trying
different pellets, set the feed adjuster to #4, Fig. 1. This is a
conservative numberand will probably need to be increased.
After you know a feed rate setting that works well, use that
setting. Remember,ifyour feed rate is too high youmay waste
fuel.
9. Fill hopper withpellets andremoveashes as
required.6
10. Store pellet fuel in a dry area away from all
ignitionsources and aboveall limits of thestove's
clearance requirements to combustibles. Donot
storethe fuel were it interferes with the refueling
of the stove or emptying of ashes. Do not store
anyashes removed from the stovenear the fuel
orother combustiblematerials.
5.This is usually a weekly maintence procedure.Cleaning the
burn potwiththe scraper with asmall amount of new fuel in the
bottom is not a problem.First,scrape the ashes on the front of
the burn pot into the ash pan. Then scrape the holed surface
downward into the burn pot. When the stove is ignited these
scrapings will be pushed out by the feeder.
6.The ash pan can hold the ashes from approximately1 ton of
premium fuel. This means the ashes will only need to be
emptied a few times a year.
WARNING
BURNING GARBAGE, USE OF IMPROPER FUELS,
FIRE STARTERS ORALTERING THE STOVE FOR
HIGHER HEAT OUTPUT MAY CAUSE DAMAGE TO
THESTOVEANDCOULD RESULTINAHOUSE FIRE.
USE ONLY APPROVED FUELS AND OPERATION
GUIDELINES.
7. Setting the feed adjuster # for maximum burn:With the unit
burning in"AUTO",turn to "Stove Mode" and putthefan on "H".
Set theTemperature Dial to #7.Allow the unit to burn for about
30 minutes andcheck ash on frontof burn pot. Fig. 4.If the ash
line is largerthan 1",turn the feed adjuster from #4 to #5. Allow
another 30 minutes of burn time and check again. If , at #6
setting, a 1" orless ash bed is notobtainable,itisnota problem.
The 1" ash bed is only a maximum burn rate and at most
normal settings the ash bed will be larger.
WARNING
NEVERUSE GASOLINE,GASOLINE-TYPELANTERN
FUEL, KEROSENE, CHARCOAL LIGHTER FLUID,
OR SIMILAR LIQUIDS TO START OR'FRESHEN UP'
A FIRE INTHIS HEATER. KEEPALL SUCH LIQUIDS
WELL AWAYFROM THE HEATER WHILE INUSE.
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5
Automatic Ignition/Operation
The Accentra Insert is more thanjust automatic ignition, it is also automatic temperature
control. The automatic systemwill allow the fire size to be adjustedto matchthe heating
needs and even put the fire out if necessary. If heat is needed after the fire is out, the
Accentra Insert will automatically re-ignite and adjust the fire size to match the heating
need.The totallyautomatic roomsensor modeis recommendedbecause of its efficiency.
The unit can be switchedbetween "AUTO" and "MANUAL" at any time during operation.
Igniter switch to "AUTO"
Room Temperature Mode
In "Room Temp Mode" heat output is controlled au-
tomatically by the Room Sensing Probe. When the Room
Sensing Probe calls for heat, the stove will increase out-
put. When the Room Sensing Probe is getting close to
the set temperature, the stove will begin to level off out-
put and keep the fire burning at just the right temperature
to maintain that setting.
High output is determined by the feed rate set-
ting. This setting, generally on #4, can be increased if
higher burn rates are necessary (Fig. 1). The unit's maxi-
mum burn rate should not create less than 1" of ash on
the burn pot front edge(See Fig.2). Overfeeding is not a
Fig. 3
Room Temperature Mode: This setting will produce a room
temperature of 70 degrees with the distribution blower at medium
speed.
safety concern, but fuel may be wasted if unburned pel-
lets fall into the ash pan.
In "Room Temp Mode" a constant fuel consumption
rate is sacrificed for exact room temperature. Therefore,
as it gets colder more pellets will be burned automati-
cally.
Stove Temperature Mode
The distribution blower speed will vary according to
the position of the mode selector pointer, and fire size.
Igniter switch to "AUTO"
Stove Temperature Mode
This allows for automatic ignition upon start-up only.
The unit can then be set at any desired setting. The heat
output and fuel consumption will remain constant regard-
less of room temperature (See Fig 4). The unit's maxi-
mum feed rate should not create less than 1" of ash on
the burn pot front edge. See Fig 2.
The unit's low burn or maintenance setting is as low
as it will go. It will not go out unless it runs out of fuel or is
turned off.
This setting will produce medium heatwith the
distribution blower on "low".
Shut-Down Procedure
To killthe fire or stopburningthe stove, turnthe Mode
Selector to "OFF". This will cause the fire to diminish and
burn out. When the fire burns out and the stove cools
down everything will stop.
If you pull the plug to shut down the stove, all motors
will stop. This may cause incomplete combustion and
smoke inthe firebox. If theload door is openedthe smoke
may escape.
The best way to shut down the stove is simply let it
run out of pellets, then the stove will shut down automati-
cally.
This setting willproduce continuous maximum heat
output with the distribution blower atfull speed.
Fig. 4
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6
Manual Start Up
Starting First Fire
Igniter Switch to"MANUAL" (down position)
Fig. 6
Make sure the unit is plugged into a 120
VAC, 60 HZ electrical source. The power light
shouldbethe only lightlit.
Fig. 5
1. Turn FEED ADJUSTER to desired feed
See Note 7.
rate. No. 4 is good for most pellets.4
1"
2. Turn the MODE SELECTOR to “OFF” and
then to the desired mode. This will reset
control and start thecombustionmotor.
3. Turn the TEMPERATURE DIAL to the de-
sired setting.
5
4. Clean burn pot with scraper if necessary.
Fig. 7
5. Fill burn pot with pellets, only level with
1. Fines are small pieces of broken pellets (sawdust). Fines
do not flow easily and often build up on the hopper funnel
bottom angles. These fines can be pushed into the feeder
opening and then fill the hopper with pellets. As the system
works, they will be burned.
2. The "TEST" cycle will operate the feeder motor for exactly
one minute. Turning to "TEST" again and againmay purge too
much fuel into the burn potcausing excessive smoke on start-
up.
3. The firebox low pressure switch will not allow the auger
motor or the igniter element to operate if the view door or the
ash pan door are open.
4. Adjust Feed Rate. If this is your first fire or you are trying
different pellets, set the feed adjuster to #4, Fig. 5. This is a
conservative numberand will probably need to be increased.
After you know a feed rate setting that works well, use that
setting.Remember,ifyourfeed rateis too high you may waste
fuel.
front edge. (Do Not Over Fill).
6. Add starting gel on top of the pellets. Stir
gel intopellets for fastlighting.
7. Light starting gel with a match, and close
the door. Operation will begin when the fire
reaches the propertemperature.3
8. Fill hopper with pellets and remove ashes
as required.1, 6
Notice when using Optional Battery Back-Up:
If a power outage is expected, change the toggle
switch to Manual Mode. The Harman 502H Battery
5.This isusually a weekly maintence procedure. Cleaning the
burn pot withthe scraperwith a small amountof new fuel in the
bottom is nota problem. First,scrape the ashes on the front of Backup is incapable of powering the igniter. If an
the burn pot into the ash pan. Then scrape the holed surface
downward into the burn pot. When the stove is ignited these
scrapings will be pushed out by the feeder.
6.Theash pan can holdthe ashes from approximately 1 ton of
automatic ignition is attempted while the stoves is
being powered by the battery back up, it may cause
damage to both the stove and the battery backup
unit.
premium fuel. This means the ashes will only need to be
emptied a few times a year.
7. Setting the feed adjuster # for maximum burn: With the unit
burning in "AUTO",turn to "StoveMode" and putthe fan on "H".
Warning
Setthe Temperature Dial to #7.Allow the unit to burn for about
30 minutes and check ash on frontof burn pot. Fig. 9.Ifthe ash
line is largerthan 1",turn thefeed adjuster from #4to #5. Allow
another 30 minutes of burn time and check again. If , at #6
setting, a 1" or less ash bed is not obtainable, it is not a
problem. The 1" ash bed is only a maximum burn rate and at
most normal settings the ash bed will be larger.
NEVERUSE GASOLINE,GASOLINE-TYPELANTERN
FUEL, KEROSENE, CHARCOAL LIGHTERFLUID, OR
SIMILAR LIQUIDS TO START OR 'FRESHEN UP' A
FIRE IN THIS HEATER. KEEP ALL SUCH LIQUIDS
WELL AWAYFROM THE HEATER WHILE INUSE.
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7
Manual Ignition/Operation
The Accentra Insert is capable of manual operation. This also allows the operator to
manually control operation during an emergency (i.e. igniter failure, when using a 502H
battery backup, or when using certain generators.)
The unit can be switched between "AUTO" and "MANUAL" at any time during operation.
NOTE: When starting the unit in the "AUTO"
mode and switching to "MANUAL", the fire must be
large enough to start the distribution blower. The
starting of the blower is a signal that the start cycle
is completed and the fire will not go out.
Igniter Switch to "MANUAL"
Room Temperature Mode
The fire will have to be lit with starting gel and a
match, or started automatically, see "Automatic Opera-
tion". Turn to "Manual" position when the fire is estab-
lished.
The difference between "AUTO" Room Tempera-
ture Mode and "Manual" Room Temperature Mode is
that the fire willnot go out as the roomtemperature goes
above the control board setting. The unit can only go to
low burn and will remain there until it runs out of fuel or
until more heat is needed and the feed rate increases.
Feed rate adjustments and dial settings are the same
as "AUTO" settings.
Fig. 8
Room Temperature Mode: This setting will produce a room
temperature of 70 degrees with the distribution blower at medium
speed.
Manual Stove Temperature Mode
Igniter Switch to "MANUAL"
Stove Temperature Mode
The advantage of this mode is to allow the opera-
tor to have a large viewing fire without blowingextra heat
into the room.
During operation, with the temperature dial set at
#5 or less, the distribution fan will not operate. A #5 on
the temperature dial and a #5 on the feed adjuster is
approximately 80% output. It is not necessary to oper-
ate the distribution blower below this point. Therefore,
there can be a higher feed rate ( a larger viewing fire)
without an excess of hot air blowing into the room.
An example of when to use the Manual Stove Tem-
perature Mode is if you want to watch a large fire and
the room is aleady up to temperature. The Stove Tem-
perature Mode allows you to have a larger fire and a
lower sound level, without the distribution blower.
NOTE: During the useof this mode, if you keep
increasing the temperature dial setting to increase
the fire size, the distribution blower will automati-
cally come on when the ESP Temperature reaches
350o F, or 81%output.
This setting willproduce a large viewing fire without a
distribution blower operating.
Fig. 9
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8
ESP Control
Power Light
Indicates power to the
control.
Feed adjuster
Sets the maximum
feed rate
Test
Runsallmotorsatfull
speed forone minute
to check operation.
After twominutes the
stove will go to
minimum burn and
the blowers will
alternate fromhigh to
low every minute to
remind you that you
are still in "Test
Mode".
Status Light
Will be lit in either stove
orroom tempmode when
pointer is notwithin off
positionband except
after normalshutdown.
Blinks to indicate errors
listed below.
Indicates power to
distribution blower.
Igniter switch
Setto appropriate
Start-Up mode.
Indicates power to
combustion blower
Distribution Blower
speedadjustmentrange.
L = low
H = high
Indicates power to the
feed motor.
Variablespeedanywhere
between L and H;
although as the stove
temp. goes up ,so does
the L andH scale.
Indicates igniter is on.
Mode Selector
Temp dial
Dealer Diagnostic Port
For dealer maintenance
only. RequiresspecialDDM
monitor suppliedto Harman
Dealers exclusively.
Allowsyoutochoosebetween
Room Temp Mode, Stove
Temp Mode, or OFF. Also
allows you to vary the
distribution blower speed by
turning the knob to the high
or lowside ofeach mode.
Allows you to adjust the room temperature in Room Temp
Mode using the outer scalemarked in degrees Fahrenheit.
It also allows you to adjust the stove temperature while in
Stove Temp Mode usingthe innerscale markedfrom 1to 7.
Status light error messages:
1 Blink: Indicates controlboard self diagnostic fail- 6 Blinks : Indicates that the control has calculated
ure. This requires a manual reset*.
poor or incomplete combustion occurring for more
3 Blinks: Indicates ESP (Exhaust Sensing Probe)
failure. This requires a manual reset*.
4 Blinks: Can occur only in Room Temp Mode and
than 50 minutes.
A six blink status may be set if the stove is allowed
to run out of pellets. To reset, turn mode selector to
indicates Room Sensing Probe failed or not in- "OFF" then back on to the desired mode. If the unit
was not out of pellets, see Troubleshooting section,
Page 24, for more details.
* Manual reset- disconnect power cord for a few
seconds and reconnect. If error still occurs call your
Dealer.
stalled. If a Room Sensing Probe is then installed,
the status light will automatically reset.
NOTE: Unit will not start in "AUTO" with this status
error.
5 Blinks (In Igniter Auto. Mode Only): Indicates
that the unit has failed to light within the 36 minute
start cycle. To reset - Turn Mode Selector to "OFF",
then turn to either mode again.)
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9
Installation: Removing unit from skid
How to Reduce the Weight for Installation
1. Remove the top/lid assembly and side panels.
• Note: Removal of the cast hopper lid itself is
NOT necessary or recommended.
• Note: The hopper lid must be in the "OPEN" position
before the top/lid assembly can be lifted off or
reinstalled on the stove body.
Bolts require a
3/8" socket.
• There are (4) 1/4-20 x1/2" flange headbolts securing
the top/lid assembly to the stove body. They can be
removed from the underside with a 3/8" socket.
The cast top and lid assembly bolt down bars:
On each side of the stove body, underneath the cast
top, are (2) 1/4" flange head bolts.See Fig. 12.
These bolts pull the cast top and lid assembly down
onto the hopper gasket to seal the hopper.
They also allow for a small amount of front to back
adjustment for alignment of the top into the wing
pockets.
(View looking up under the cast top.)
Fig. 12
Top bolt down bar
Be careful not to
damage
the
distribution blower
located under the
insert. There are
guards on both
sides of the motor
to allow the insert
to rest on a flat
surface, however,
extra care should
be taken.
Remove the cast side panels by lifting them upward
off of the hinge pins. See Fig. 13.
Top and LidAssembly
DistributionBlower
ProtectorAngles: These angles aredesigned to
protect the blower motor from damage when
placed on a flat surface. Be careful where and
how the stove body is handled.
Fig. 10
Center
Medallion
Heat
Exchanger
Cover
(2)SpringLatches
(One oneach side)
Mounting Shell
Internal
Cast Iron
(4) pieces
Ash Pan
Flame Guide
Fig. 11
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10
Installation
Removing the Center Medallion
• Lift up on the 2 bottom corners of the medallion until
it is higher than the top of the flame guide.
• Pull the bottom edge of the medallion front approxi-
mately 1 inch.
• Pull downward on the corners of the medallion until
the top is released from the 2 retainers that keep the
top aligned when in place.
• Note: The heat exchanger covers will tilt to the front
when the center medallion is removed.pproximatlely
12”, but the left side tube requires the total length of the
brush to be used.
Center Medallion
Fig. 13
rd
rd
3 : DOWN
3 : DOWN
Lasered hinge pin
pivoting point
Cast side
panel hinge
1st:UP
2nd:OUT
Up and down clearance
adjustment slots.
Flameguide
How to Reduce the Weight for Installation, cont'd
2. Remove the door by swinging it open approximately
90o and lift it upward until it clears the hinge pins.
3. Remove the ash pan
Burn Pot
4. Remove the (4) internal pieces of cast iron. See Fig.
14 and 15.
Fig. 14
Removing the Heat Exchanger Covers
• Remove the heat exchanger cover by lifting it upward
about 1/2 inch and move the bottom edge front until it
sits flat on the firebox bottom.
• Rotate the edge of the heat exchanger closest to the
burnpot until it is in front of the burnpot.
• Tip the top of the heat exchanger toward the middle of
the opening until it can be lifted up and out.
Lifting tab
Fig. 15
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11
Installation
Beginning Installation
3" Outside Air
starter collar
IMPORTANT: The mounting frame/surround
assembly and flue piping is the most critical part of
theinstallation andmustbe done correctlyandinstalled
securely.
Notch
1.Choose the chimneyconfigurationthat is best suited
for the installation. See venting section.
• Note: If 100% outside air is desired or required, the
outsideair optionwill needto be installed onthe stoves
body. (See instructions included with outside air kit
(part #1-00-674080.) See Page 20.
2. Make sure the unit will fit into the fireplace opening.
See Fig # 17. When installing in smaller fireplaces,
test fit the mounting frame into the firebox. Note: The
unit overhangs to the rear.
3. Install the 3 piece cast surround set to the sides
and top of the mounting frame with the bolts and nuts
supplied. The left and rightside should be done before
the center section is installed. Make sure the bolts
are loose. Do not remove the side panel hinges. The
left and right side wings should be standing up aligned
with the side of the mounting frame and slid inward
towards the center. Note:The wings mount on the rear
side below the notch and on the front side above the
notch. See Fig. 16 & 18. Slide the cast ash lip onto
the frame and check to make sure it can go against
the roped frame rails and fits into the pockets on the
left and right cast sides. See Fig. 19.
Fig. 16
Ash lip slide rails
Install the center section.
4. If the wing extensions are required they should be
installed next.
Cast in front of
the frame. Use
(1)1/4-20 x 3/8
flange bolt from
the rear.
Fig. 17
Approximately 2" overhang
NOTE:The stovebody extends throughthemountingframe
inthe rear approximately 2".
Slide the ash lip
casting into the
frame, making
certain the ash lip
is sitting on the
slide rails on
either side. With
the ash lip in
place, adjust the
surroundsides so
there is an even
gapwheretheash
lip extends into the
surround side and
Castbehind the
mounting frame
flange. Use (2)
1 / 4 - 2 0 x5 / 8
flange bolts and
nuts with bolts
fromthe front.
tighten.
Fig. 18
Fig. 19
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12
Installation
Optional Wing Extensions
Connecting the cord retainer to the wing
Optional wing extensions are made for fireplace open-
ings which are larger than the cast wing. The 3 piece
wing extension is 48" wide by 34"high.
Custom oversized wing extensions can be purchased
from Harman for any fireplace openings larger than the
standard wing extension area.
These optional wing extensions will have a 1/2 inch re-
turn bend as shown in fig. 20. Custom oversized wing
extensions with a radius top can be ordered with a ra-
dius of your choosing. These radius top wings WILL
NOT have a return bend, although they will be made of
thicker metal to reduce warpage.
With the three wing pieces completed, the cord re-
tainer must be bolted to the bottom rear of the wing.
Either left exit (shown in fig. 22) or right exit.
At the bottom rear edge of the right and left wing there
is a small radius indent for the cord to exit between
the wing and the fireplace face.
1/4-20 x 3/8
bottom head bolts
(5/32" allenwrench)
(5/32" allenwrench)
Fig. 22
Fig. 20
5. The power cord can be installed exiting the left
(standard) or right side of the surround. If a right side
cord is desired, follow the instructions below.
Changing the cord exit location from the left side
to the right side:
Ground
Ty-raps
The cord is located on the left side, standard from
Harman. (See fig 21.)
To route the cord to the right side:
• Cut the tyraps looping the cord to the left
• Reroute the cord along the top of the steel angle and
down the right side.
• Re-tyrap (not supplied by Harman) the wire through
the notches providedin the mounting frame.Then down
the right side rail.
• Do not remove or move the cord retainer, it is made
to reach both the right and left sides.
Fig. 23
6. You must now decide whether to install the room
sensor as a wall sensor or as a return air sensor.
Harman highly recommends that the room sensor be
installed. If you are installing the room sensor as a wall
sensor, the long black 2 wire cable must be Ty-rapped
to the powercord. This wire is long enough to reach the
end of the power cord so the installer can reach past
the hearth to the location where the extension wire (18/
2 thermostat wire, not supplied by Harman) can be
spliced to go to the wall location chosen for the room
sensor.
Nothing can ex-
tend beyond this
DO
NOT
face to the back
side.
CUT.
Fig. 21
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13
Installation
8. Install the (4) 3/8-16 x 1" leveling bolts into the
threaded holes in the bottom pan of the mounting shell.
The front two leveing bolts may not be necessary, but
the back two will need to be used to level the wing so
that it is flush with the fireplace face. See Fig. 26.
7. If the room sensor is used as a return air sensor
rather than a room thermostat/sensor, the black cable
will not be used. The room sensor itself (gray cable
with black and red wires) will be connected to the blue
twisted wires from the control board.
Note: The stove body must be able to slide out of the
shell to the limit of the power cord wires for cleaning
andservice. Therefore, if the room sensor is connected
as a return air sensor, the wire should be connected
long enough to allow this, but not too long that it would
get tangled or pinched anywhere.
1/2" threaded
wedging rods
Notice: The male/female connections between the
mounting shell and the stove body should always be
maintained. Wirenut or taped splices should never be
used.
Connecting the room sensor as a return airsensor
• Insert the sensor end of the wire from the rear of the
mounting frame through the hole as shown in fig. 24 .
• Tyrap the sensor end so that the sensing tip is in the
middle of the front return air opening. See Fig. 25.
• Tyrap the sensor wire to the inside of the mounting
frame up to the cord grounding location. Follow the
power wiring to where you make the male/female ter-
minal connection to the twisted blue wires.
There are (2) crimp-on connectorsin the hardware pack
that must be installed on the internal ends of the room
sensor wires.
3/8 x 16 tapped
levelingbolt holes
(5) bolt downholes
Fig. 26
Fig. 24
Side ReturnAir Holes
Fig. 25
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14
Installation
9. Install the completed frame/surround assembly into the
firebox and level/plumbthe wingto the fireplace faceusingthe
leveling bolts as jacks.
* Ash protection must be used from hearth opening to 6" in
front of door glass and 6" to each side of the stove body to
protect any combustibles from hot ashes. A minimum size
will be 16.5" deep by 30" wide and be made of a non-
combustible materialor meet UL approval.
Fig. 28
Flue Pipe Stub Assembly
(from glass)
10. Test fit the cast ash lip (See fig. 25) on the shell frame
mounting rails. The ash lip should slide on these side rails
without liftingupward off of the rails as the ashlip is slid inward.
Asmallclearance of about 1/16"is anideal spacebetween the
legsoftheashlipandthehearth. Thiscast ashlipisa decorative
part that does not and should not support any weight.
There are three different diameter flue pipe stub
assemblys.
1. The unitcomes standard with the largest for use with 4”
stainless steel flex pipe.
2.Part #1-10-082745for use with 4” PL ventstarter pipe.
3. Part # 1-10-674039 for use with 3” PL vent starter
pipe and also for use with 3” aluminum flex duct for out-
side air connections.
11. Tightenthe (2) 1/2" threaded wedgingrods upagainst the
lintel of the fireplace opening. It is also recommended to use
some form ofanchoringscrews throughthe bottomof the shell
into the hearth. There are up to 5 holes provided. Note: It is a
good idea to check the ash lip again. The frame may have
shiftedwhenthe finalanchoring was completed. Seefig. 26.
The flue stub assembly base is a round plate which al-
lows it to swivel to allow the flue pipe to exit the mount-
ing frame in other positions rather than straight up. See
fig. 28.
12. Complete the flue piping, and outside air piping, if used.
Make sure the damper area is sealed.
CAUTION: IF THE STAINLESS STEEL FLUE PIPE DOES
NOT EXTEND FAR ENOUGH ABOVE THE OLD DAMPER
14. Install the flue pipe insulation wrap. See Fig. 27. This
ceramic insulation is precut to form around the flue pipe
stub, to reduce heat transfer into the area around the
OPENING, MAKE SURE THE FIBERGLASS INSULATION rear of the hopper and motor area. This insulation must
DOES NOT EXTEND UPWARD AND COVER THE PIPE
OUTLET.
WARNING DO NOT CONNECT THIS UNIT TO ANYAIR DIS-
TRIBUTION DUCT OR SYSTEM.
be installed in all configurations, ev en if a rear
discharge is used. See Fig. 29.
This picture shows the completed
insulation wrappedaround the flue pipe
fromthe mountingframe upward.
13. If arear exitflue configurationis used,withorwithout outside
air, makesure theflue pipeterminationclearances are followed
as per themanufacturers recommendations.
Twisted tie wire
d
t
,
e
Ash lip
:
mounting
t
rails
Fig. 29
Fig. 27
With larger flue pipes this bottom edge of the insulation will
need to be trimmed to complete the wrap.
Pre-cut ceramic insulationand (2) pieces of tie wire.
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15
Connecting the ground from the wing to the
Installation
15. Install the cast side panels by sliding them down
over the lasered hinge pin. Note: Check for rotational
swing, but finish with them in the open position. The
cast side panels may need adjustment after the stove
body is latched into place and the front door is closed.
stove body
• The green wire with a female terminal is the stove
body ground.
• On the combustion air inlet box there is a male ter-
minal ground.
• If service is performed on this stove,this ground
connection must be the first one on and the last
one off.
Fig. 30
Lasered hinge pin pivoting point
Cast side
panel hinge
Up and down clearance adjustment slots.
16. Place the stove body onthe mountingshell gasketed
rails and insert the body into the opening far enough
that it can't tip out. Note: A service rail kit (Part #1-00-
08007), ora pair of 2 x4'ssupported infront ofthe hearth
will make this job easier. See Fig. 31.
Fig. 32
Connecting the power cord
17. Complete the following electrical connections
(caution: Disconnect the power cord.) There are 5
connections that must be completed. See Fig. 33 & 34.
The white from the mounting frame connects to the
white of the insert body.The black from the mounting
frame connects to the brown of the insert body.
Fig. 33
2 x 4
Fig.31
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16
Installation
19. Inspect the silicone sponge gasket on the top edge
of the hopper.
• If it is okay, put the cast top/hopper lid assembly (see
Fig. 35) into place over the hopper.
• Make sure the hopper lid is open to install unit, then
close it to keep from getting pinched in case the lid falls
unexpectedly.
• Insert the (4) 1/4-20 x 1/2 flange head bolts into the
mounting hole but do not tighten them.See page 8, fig.
12.
Connecting the Room Sensor
Connecting the room sensor to the blue twisted wires
from the control board:
• (2) 3/16 inch maleterminals areprovided for the ends
of the room sensor wires.
• They will mate with the female terminals on the blue
twisted wires.
•These connections are “not polarity specific.”
20. "Test" the unit with the stove body pulled out. This
will allow you to see the motors in operation.
• Turn the control to the "OFF" position.
• Plug the unit into a 120 VAC 60 hz outlet.
• Turn the control to "test". All of the motors should
operate at full voltage for 60 seconds.
Note: The door must be closed for the feed motor to
operate.
• With the "Test" completed, unplug the unit.
21. Inspect the flue docking gasket. See Fig. 36.
Docking Gasket
Everytime the unit is pulled out of the mounting frame,
the orange high temperature docking gasket should be
inspected. Check for tears or signs that the gasket is
not sealing properly.
Fig. 34
18. Install the front door. Check the latch and gasketing.
Docking Gasket
Hopper Seal
Inspect the silicone sponge hopper to top seal gasket.
Look for tears or areas where the gasketmay not seal
properly to the bottom of the cast top. This only needs
to be done when the top is removed. This is NOT nec-
essary if the cast top is not removed. (Not part of any
monthly, semi-annual or annual maintenance.)
Hopper sealgasket (grayor orange)
Fig. 36
Fig. 35
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17
Installation
22. Slide the stove body into the mounting frame.
Cast Side Panel Installation
• Note: The two spring latches on the bottom
right and left side of the body must be in the proper
position to enter the latch holes. (See fig. 37).
• Latch the (2) spring latches into place.
• The stove body must be pulled out of the mounting
frame several inches to install the cast side panels.
• Slide the cast side panel down over the hinge pins.
• Slide the stove body in and latch into place.
• Note: The cast side panels must be left in the open
position to allow access to the latches.
• Slide the ash lip into place. (This would be inward
until the rear of the cast iron touches the mounting
frame front.)
23. Shift the cast top/hopper lid assembly inward as far
as possible to achieve a parallel fit with the surround
sides. See Fig. 39. Tighten the cast top/hopper lid
assembly bolts with a 3/8" socket. See page 8, Fig. 12.
• Close the cast side panels.
24.Install and adjust the side panel magnets.
• In the hardware pack are (2) magnets, (2) spacers and
(2) 10-32 x 1 1/4" bolts and nuts.
• Bolt the magnets through the cast iron hole provided.
Important: The spacer must be on top of the
hole, the magnet on top of the spacer with the
bolt going down through the hole with the nut at
the bottom, under the ash lip. See fig. 38.
• Check the gap alignment and the top and bottom
gap spacing.
• The topand bottomspacing canbe adjustedby loos-
ening the 3 bolts and sliding the hinge up or down
until the spacing suits.
• With the front door closed and latched, check the
vertical space alignment. The only method of chang-
ing or adjusting this gap is by bending (slightly) the
hinge angle. See fig. 39.
25. Check the fit of the cast ash lip to make sure that it
• Due to the use of all cast iron parts, some small
can be slid in and out easily. The cast ash lip can remain amounts of misalignment are expected. Since some
parts are angled and some have rounded edges, this
misalignment is very seldom noticable.
• It is very important that the cast side panels open
and close freely for good control board access.
in place at this time. Note: The cast side panel hinges
can be moved upward if necessary to gain clearance for
the cast ash lip.
Latch Hole
Spring Latch
Fit cast
Fit cast
Magnet
top/
top/
hopper
hopper
lid
lid
Fig. 37
parallel
parallel
with
with
Magnet
surround.
surround.
Side panel gap
Fig. 39
Fig. 38
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Installation
18
Wiring
Log Set Option
Always disconnect the power cord beforethe unit
is pulled from the mounting frame.
As you can see, the control board is easily accessible
from the rear with the body pulled out of the frame,
even if it is only pulled out several inches.
• Always inspect the wiring harness of the 11 pin sock-
ets (large white flat plug where all of the power wires
terminate.)
• Always inspect the wiring harness where the wires
transfer from the control to the rear inside of the body.
• Make sure there are no worn or frayed areas.
Inspect thewiring harness transition area:This is thearea
thatcomes closestto the mounting frame asthe unitis slid
in and out of the frame.
Thumb
Screws
Fig.42
Install the log bracket with the two thumb screws
provided.
6 amp
glass
fuse
11pin
socket
on rear
of control
board
Fig. 40
Fig. 43
Center the log in the firebox opening with the bottom
front edge over the thumb screws. The log branch
tips only rest on the bracket arms for easy installa-
tion and removal.
REMINDERS
• Do not allow pellets or sawdust to build up on the
hopper lip.
• Inspect the hopper lid gasket for damage. A good
hopper lid seal is very important for proper opera-
tion.
IMPORTANT NOTE: BEFORE CLEANING THE
HEAT EXCHANGERS, THE LOG AND THE
LOG BRACKET MUST BE REMOVED.
Hopper lid foam
gaskets
Cast Top
Fig. 41
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19
Low Draft Voltage Adjustment
After the installation is completed but before the first fire is lit,
check and record the high and low draft readings.
Combustion
Motor Speed
Control
Low draft only
set point.
The small
straight
screwdriverslot
is plastic;
therefore, the
unit can be
adjusted while
in operation.
Fig. 45
Draft Meter bolt hole location
Fig.44
The head of the plug bolt can be accessed through
the bottom distribution air inlet with the cast ash lip
removed.
These units are pre-tested at the factory with
exactly 120 Volts A.C., 60 Hz. They are checked and
adjusted for firebox tightness, gasket leakage, motor
operation and igniter operation. The stove is then
factory set at a high adjustment. NOTE: Low draft
adjustment maybe required.The factorylow draft
setting maynot be correct for theunits permanent
installation conditions.
The control board on the Accentra Insert is
equipped with a low draft adjustment port. Located
on the control face just to the right of the igniter light.
See Figure 44. This voltage adjustment is provided to
allowthe unit to be adjusted for the household voltage
where the unit is going to be in permanant operation.
NOTE: The line voltage varies from area to area and
often home to home.
The low draft voltage should be adjusted to
achieve the most efficient burn on low burn or
"maintenance". This voltage adjustment allows the
installer to change the low voltage set point
approximately 15 volts. This adjustment should be
done by the installer during set up because a draft
meter reading is required to insure proper set up.
If the unit is not adjusted properly, it does not
cause a safetyconcern. If the unitis adjustedtoo high,
only effiency is lost. If the unit is adjusted too low, the
low draft pressure switch will not allow the feeder
motor or the igniter to operate.
A simple draft test should be performed after
completing the flue pipe installation. To record the
results for future reference:
1. Plug unit into a 120VAC, 60 HZ outlet.
2. Close the hopper lid and front view door. Neither
pellets or a fire are required for this test.
3. With the mode selector in the "OFF" position, turn
the feed adjuster to "TEST".
4. Record the high draft_____in. W.C. (Normal is -
.45 to -.55) The control will be on the High Draft for a
total of 2 minutes.
5. After 2 minutes is up, the combustion motor will
go down to low draft and the distribution blower will
go on high. Allow approximately 15 seconds to pass
for the combustion motor to slowbefore checking the
low draft.
6. If the low draft is between .30 and .35, record the
reading _____ in. W.C. If the reading is higher, slowly
turn the set screw counter-clockwise until the draft
lowers. If the reading is lower, very slowlyturn the set
screw clockwise until the draft increases.
NOTE:The test mode alternates from high to low
draft every 60 seconds. If more time is needed
for draft adjustment, wait until the next low draft
cycle.
NOTE: In some cases, the draft may not go as
low as .30 even with the set screw completely
counter-clockwise.
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20
Mobile Home Installation
Safety Reminders
Mobile Home Installation
Mobilehome installation should bedone in
accordance with the Manufactured Home and
Safety Standard (HUD), CFR 3280, Part 24.
When installing the Accentra in a mobile home
several requirements must be followed:
1. The unit must be bolted to the floor. This can
be done with 1/4" lag screws through the 5 holes in
the base plate shown in Fig. 26.
2. The unit must also be connected for the out-
side air. See page 21.All mobile home installations
require the use of outside air, this willincrease the
heating efficiencyofthe unitand keepitfrom suffer-
ing any effects associated with room air starvation
such as poor combustion and or erratic operation.
Periodically check the air inlet for any obstructions
such as snow or ice build up.
Kitchen exhaust fans, clothes dryers and
other similar devices maycause improper operation
ofthe pelletstove, if,while inuse itkeeps the room in
a negative pressure thus allowingpipe joints notcom-
pletelysealed to leakexhaustinto the room. Be sure
to allow adequate ventilation while using such appli-
ances
When installing and operating your Harman
Accentra Insert, respect basic safety standards.
Readthese instructions carefullybeforeyou attempt
to install or operate the Accentra Insert. Failure to
do so may result in damage to property or personal
injury and may void the product warranty.
Consult with your local building code agency
andinsurance representative before youbegin your
installation to ensure compliance with local codes,
including the need for permits and follow-up inspec-
tions.
CAUTION: This appliance must be vented
to the outside.
Due to high temperatures, this stove should
be placed out of traffic and away from furniture and
draperies.
Children and adults should be alerted to the
hazards of high surface temperatures and should
stay away to avoid burn to skin and/or clothing.
Young children should be carefully supervised
when they are in the same room as the stove.
Clothing and other flammable materials should
not be placed on or near this stove.
Installation and repair of this stove should be
done by a qualified service person. The appliance
should be inspected before use and at least annu-
ally by a qualified service person. More frequent
cleaning will be required. It is imperative that control
compartments, burners, and circulating air pas-
sageways of this stove be kept clean.
3. Floor protection and clearances must be
followed.Floorprotectionandclearances to combus-
tibles mustbe followedas perinstallationinstructions
for the stove. Clearances may only be reduced by
means approved by the regulatory authority.
4. Unit must be grounded to the metalframe of the
mobile home.
5. Smoke alarms and smoke detectors are recom-
mended to be used with wood and biomass fueled
stoves. W hen opening the firebox door some ex-
haustmayescapeinto theroom andsetoffthe alarm.
If this should happen ventilate the room to remove
the smoke and resetthe alarm, ifthe alarm would go
offwhen no one was working with the stove ventilate
the room and have your home checked to find the
source ofthe leak.
CAUTION
THE STOVE IS HOT WHILE IN OPERATION.
KEEP CHILDREN, CLOTHING AND
FURNITUREAWAY. CONTACT MAY CAUSE
SKIN BURNS.
WARNING
KEEP COMBUSTIBLE MATERIALS SUCH
AS GRASS, LEAVES, ETC.AT LEAST 3 FEET
AWAY FROM THE POINT DIRECTLY UNDER
THE VENT TERMINATION.
WARNING
USE OF IMPROPER FUELS, FIRE STARTERS
ORALTERING THESTOVE FOR HIGHER HEAT
OUTPUTMAYCAUSEDAMAGETOTHE STOVE
AND COULD RESULT IN A HOUSE FIRE. USE
ONLY APPROVED FUELS AND OPERATION
GUIDELINES
WARNING
DO NOT INSTALL THIS UNIT IN ANY
SLEEPING ROOM
CAUTION
THE STRUCTURAL INTEGRITY OF THE
MOBILE HOME FLOOR, WALL, AND CEILING/
ROOF MUST BE MAINTAINED.
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21
Venting
A combustion blower is used to extract the com-
bustion gases from the firebox. This causes a negative
pressure in the firebox and a positive pressure in the
venting system as shown in fig. 46. The longer the vent
pipe and more elbows used in the system, the greater
the flow resistance.
The recommended maximum flue lengths for the
Accentra Insert are as follows:
4" StainlessSteel Flex: 30 Linealft. Vertical*
In flue pipe
Inside hopper
4" PL Vent Pipe:
4" PlVent Pipe: 30 Linealft. Vertical*
4" Pl Vent Pipe:14 ft. Vertical w/1-90o and12 linealft. horizontal*
If additional 4" PL Vent fittings are required, the overall
length must be reduced by:
Vertical 90o or T: 2.5'
Vertical 45o:
1.5'
Horizontal 90o or T: 5.0'
Horizontal 45o:
2.5'
3" PL Vent Pipe:
20 Linealft. vertical*
8 Linealft. verticalw/1-90o & 8lineal ft. horizontal*
Inside
firebox
In fan
chamber
&
starter
collar
If additional 3" PL Vent fittings are required, the overall
length must be reduced by:
Vertical 90o or T: 2.0'
Vertical 45o:
1.0'
Horizontal 90o or T: 4.0'
Horizontal 45o:
2.0'
Fig.46
+ = Positive static pressure
= Negative static pressure
* Longruns of flex orPL vent pipe installeddirectly vertical fromtheflue stub
may require more frequent cleaning due to fly ash falling off inside and
collecting directly abovethe combustion blower outlet.
Any use of horizontal venting will require more frequent cleaning. It is the
responsibility oftheinstaller to makesure allflue configurationare accessible
for cleaning.
4" stainless steel flex vent piping is only allowed
for use in masonry fireplaces and chimneys or factory
built wood burning fireplaces with class A metal chim-
neys. All pellet vent pipe whether flex type, PL or an-
other approved type must be secured together either
by means provided bypipe manufacturer or by3 screws
at each joint.
DO NOT INSTALL A FLUE DAMPER IN THE
EXHAUST VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE SERVING ANOTHER APPLAINCE.
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Venting
22
100% Outside Air Kit
Designedfor 3" flex pipe
Vent Pipe
Be sure to use approved pellet vent pipe
wall and ceiling pass- through fittings to go
through combustible walls and ceilings.Be sure
to usea starting collar to attach the venting sys-
tem to the stove. The starting collar must be
sealed to the vent pipe with high temp silicone
caulking.
4" stainless steel flex vent piping is only
allowed for use in masonaryfireplaces and chim-
neys or factorybuilt woodburning fireplaces with
class A metal chimneys.
100% Outside Air
Kit# 1-00-674080
1/8" Fiberglass Gasket
2 3/8" IDFlex Pipe
1/2" Silicone Gasket
Intake Box
Pellet venting pipe ( also known as PL vent
) is constructed of two layers with air space be-
tween thelayers. This air spaceacts as an insu-
lator and reduces the outside surface tempera-
ture to allow a clearance to combustibles of only
3 inches. The sections of pipe lock together to
form an air tight seal in most cases; however, in
some cases a perfect seal is not achieved. For
this reason and the fact that theAccentra Insert
operates with a positive vent pressure, we
specify that the joints also be sealed with clear
silicone.
Fig. 47
Outside Air
Outside air is optional (not required) except in
mobile homes and where building codes require it
to be installed. The benefit of outside air is mainly
noticed in small, very tight houses.
The outside air kit consists of a flue stub pipe,
fiberglass gasket, silicone gasket, intake box and a
section of flex pipe. See Fig. 47.
An adjustable chimney intake extension, part #
1-00-674104 is available to be used on masonry
chimneys only. See Fig. 48.
Additional information and diagrams can be
found on pages 22 thru 26 under venting.
To install outside air, use kit part number 1-10-
674080. Follow the installation instructions provided
with the kit.
Adjustable Chimney
Intake Extension
Part# 1-00-674104
Fig. 48
HRV
Wheninstalling ina house with a Heat Reclaim-
ing Ventilation System (HRV) be sure the system is
balanced and is not creating a negative pressure in
the house.
If the Accentra Insert is installed with the 100%
outside air kit, the HRV should not have to be ad-
justed.
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23
Venting
The chimney topmustbe capped
to prevent rainand/or snow from
enteringthe chimney.
#1 Installing into an existing fireplace
chimney (US & Canada)
See Page 21. for information on
the optional Harman Adjustable
Stainless SteelIntake Extension.
This method provides excellent venting with
100% outside air which is the most efficient opera-
tion of this unit. This method also provides natural
draft in the event of a power failure.
A 4 inch stainless steel flex pipe is needed for
the flue pipe, and3" aluminumor Stainless Steel Flex
Pipe is used for the intake.
In Canada and some places in the US it is re-
quired that the vent pipe extend all the way to the top
of the chimney.
Fiberglass insulation
packed above the
damper opening and
sealed plate. (Not a
Harman product.)
Height of existinghearth
Fig. 49
The chimney top must be
capped to prevent rain and/or
snowfromenteringthe chimney.
#2 Installing into an existing
fireplace chimney (US & Canada)
This method provides excellent venting for nor-
mal operation. This method also provides natural
draft in the event of a power failure.
The damper area must be sealed with a steel
plate or fiberglass. A cap should be installed on the
chimney to keep out rain.
Combustion air is provided from the living area
and enters the feed system from around the wing
and stove body spaces.
Fiberglass insulation
packed above the
damper opening and
sealed plate. (Not a
Harman product.)
Fig. 50
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24
Venting
The chimney top must be
#3 Installing into an existing
chimney (US only)
capped to prevent rain and/or
snowfromenteringthe chimney.
This method provides excellent venting for nor-
mal operation. This method also provides natural
draft in the event of a power failure. If the chimney
condition is questionable you may want to install a
liner as in method #2.
This is the minimum allowed vent pipe using 4"
stainless steel flex pipe.
The vent pipe must extend past the damper
sealing area by at least 12 inches.
Note: The fiberglass insulation must not be al-
lowed to expand to the point that it covers the end of
the flex pipe.
Fiberglass insulation
packed above the
damper opening and
sealed plate. (Not a
Harman product.)
The chimney should be capped with any style
cap that will not allow rain or snow to enter.
Fig.51
Chimney top
MUSTBE SEALED
#4 Preferred method
This method provides excellent venting for nor-
mal operation and in a fireplace with inadaquate flue
space, or a height of over 30 feet. A3" or 4" PL vent
pipe should be used with an optional swivel flue stub.
NOTE: The flue stub insulation wrap must still
be used with this method. See page 13, Fig. 27 &
29. With a 100% outside air kit the outside air can
be installed in the same manner as the flue pipe.
Fiberglass insulation
packed above the
damper opening and
sealed plate. (Not a
Harman product.)
Stainless Steel
Outside Air Inlet
Cover
3" Flex
pipe
part# 1-10-09542
36"
CAUTION
KEEP COMBUSTIBLES (SUCH AS
GRASS, LEAVES, ETC.) AT LEAST 3
FEET AWAY FROM THE FLUE OUTLET
ON THE OUTSIDE OF THE BUILDING.
18" min.
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25
Venting
Installing the Accentra Insert into an
existing factory built wood burning
fireplace
When installing the Accentra Insert into a factory
built wood burning fireplace, several things need to be
taken into consideration.
The size of the fireplace opening. Will the unit fit
into the opening? Many of these units have metal
smoke shields inside the top that can be removed to
gain height. Often the side and rear refractory can be
removed to gain depth and width.
Some factory built fireplaces have a firebox that
is lower than the opening. Many have a bottom lip that
is higher than the hearth. This is an issue with the
Harman Accentra Insert since we do not have any-
thing to fill the space between the bottom of the unit
and the hearth. It would be the responsibility of the
installer to supply something to fill this space and be
strong enough to support the front of the insert.
As for the size and position of the existing chim-
ney and its damper system, the Harman Accentra In-
sert has a swivel style flue stub that will allowthe stain-
less steel flex pipe to exit into most factory built fire-
places.
Fig. 53
OPTIONAL HOPPER CONFIGURATIONS FOR
SMALLER FIREPLACE OPENINGS:
The Harman Accentra Insert can be factory built with
shorter hopper configurations.
The standard requires a 24" opening. Part #1-90-00674
Option1: Requiresa 22" opening height. Part #1-90-00675
Option2: Requiresa 20" opening height. Part #1-90-00676
Keep in mind the hopper capacities will decrease with the
optional heights.
Note: If the Harman Accentra Insert is installed into a factory built wood
burning fireplace, this label (Harman part # 3-90-00675)MUST be attached
to the altered fireplace.
Fig. 54
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26
Accentra Insert Zero Clearance Cabinet
Harman Mantel System
Harman Zero
Clearance cabinet
(top flue only)
Part #1-00-674070
Insert Body
Insert Wing &
Mounting Frame
See your dealer for part details
and installation instructions.
Fig. 55
Be su re to use ap-
proved pellet vent pipe wall
and ceiling pass- through
fittings to go through com-
bustible walls and ceilings.
Be sure to use a starting col-
lar to attach the venting sys-
tem to the flue stub and seal
the connection with high
temperature silicone.
Harman Zero Clearance Box
Flue Pipe Support (optional)
Part# 1-00-674119
A minimum of a 1" hearth is
required when using the
Harman Zero Clearance box.
When using 3" or 4" PL vent
pipe, there must be a 3"
clearance to combustibles.
Fig. 56
Combustible materials are allowed to touch the cabinet anywhere behind the front mounting flanges except vent
clearance areas. The hearth substructure may be built of combustible material although a non-combustible hearth
surface (tile, stone, metal, glass) must extend as far as shown on the UL label.
AFTER THE INSTALLATION IS COMPLETED
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27
Venting
Requirements for Terminating the Venting
WARNING: Venting terminals must not be re-
cessed into a wall or siding.
I. The clearance to service regulator vent outlet
must be a minimum of 6 feet.
J. The clearance to a non-mechanical air sup-
1
NOTE: Only PL vent pipe wall pass-throughs
and fire stops should be used when venting through ply inlet to the building or the combustion air inlet to
1
combustible materials.
any other appliance must be a minimum of 48”.
NOTE: Always take into consideration the ef-
fect the prevailing wind direction or other wind cur- inlet must be a minimum of 10 feet.
K. The clearance to a mechanical air supply
1
rents will cause with flyash and /or smoke when plac-
ing the termination.
(with outside air installed, 6 feet )
L. The clearance above a paved sidewalk or a
In addition, thefollowing must be observed: paved driveway located on public property must be
A. The clearance above grade must be a mini- a minimum of 7 feet.1,2
mum of 18".1
M. The clearance under a veranda, porch,deck
1,3
B. The clearance to a window or door that may or balcony must be a minimum of 12 inches.
be opened must be a minimum of 48" to the side
NOTE: The clearance to vegetation and other
and 48" below the window/door, and 12" above the exterior combustibles such as mulch is 36” as mea-
1
window/door.
( with outside air installed, 18”)
sured from the center of the outlet or cap. This 36”
radius continues to grade or a minimum of 7 feet
C.A12"clearance to a permanentlyclosed win- below the outlet.
dow is recommended to prevent condensation on
the window.
1CertainCanadian andor Local codes or regu-
lations may require different clearances.
D. The vertical clearance to a ventilated soffit
2Avent shallnot terminate directly above a side-
located above the terminal within a horizontal dis- walk or paved driveway which is located between
tance of 2 feet (60 cm) from the center-line of the two single family dwellings and serves both dwell-
terminal must be a minimum of 18".
E. The clearance to an unventilated soffit must
be a minimum of 12".
ings.
3Only permitted if veranda, porch, deck, or bal-
cony is fully open on a minimum of 2 sides beneath
F. The clearance to an outside corner is 11" the floor.
from center of pipe.
NOTE: Where passage through a w all, or
G. The clearance to an inside corner is 12".
H. Avent must not be installed within 3 feet (90
cm) above a gas meter/regulator assembly when
measured fromthe horizontalcenter-line of the regu-
lator.1
partition of combustible construction is desired,
the installation shall conformto CAN/CSA-B365.
(if in Canada)
Inside
Corner
Detail
Fixed
Closed
Fixed
Closed
Openable
Openable
= Air supply inlet
= Vent terminal
= Area where terminal is not permitted
A
V
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28
Maintenance - Cleaning Glass on View Door
The unit should be out and cool to clean the door glass. It may not always be possible to allow the unit to
cool off before cleaning. Therefore, if the unit is turned to the lowest setting about 1 hour before cleaning, it will
make it possible to clean the glass with the unit in operation.
Any glass cleaner with a high amonia content will work the best. Use only non-synthetic cleaning rags
such as cotton or paper towels.
CAUTION: Take care when spraying cleaner on the inside surface of the glass. The glass may be hot
enough to cause undesirable fumes to fill the area around the unit very rapidly. Gloves and eye
protection are recommended.
Disposal of ashes: Ashes should be placed in a metal container with a tight fitting lid. The closed container of
ashes should be placed on a non-combustible floor or on the ground, well away from all combustible materials,
pending final disposal. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should be
retained in the closed container until all cinders have thoroughly cooled.
Soot and fly ash: Formation and need for removal. The products of combustion contain small particles of fly
ash. The fly ash will collect in the exhaust venting system and will restrict the flow of the flue gases. Pellet fuels
have different ash contents depending on what type of wood has been used to make the pellets. We
recommend to clean the system after approximately 1 ton of pellets have been burned and judge from
that how often the stove should be cleaned, remember if you change pellets it may change how often
you have to clean your stove.
Incomplete combustion such as occurs during start up, shutdown, or improper operation of the heater
will lead to some soot formation, which will collect in the exhaust venting system. The exhaust vent should be
inspected at least once every year to determine if cleaning is necessary.
Replace glass
only with high
tem per ature
ceramic glass.
Inspect door gasket during
Glass Gasket
cleaning and inspection
Fig. 57
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29
Maintenance - Burn Pot
Burn Pot Cleaning and Maintenance
1. Scrape the top holed surface and sides of the
burn pot down to auger tube.(Fig 58) It is not
necessary to completely remove all material from
the burn pot. The excess will be pushed out during
the next use.
2. Loosen the (2) wing thumb screws on the lower
front angle of the burn pot. (Fig. 59)
3. Lift off the clean-out cover (Fig.59) to open the
bottom clean-out chamber. (Fig.60)
DANGER
Disconnect the power to the unit before
removing cover.
Fig.58
4. Clean ashbuildup frominside the chamber while
cover is off. Use the scraper to tap on the top front
edge of the burn pot. This will help knock pieces of
ash, loosened by the scraping process, down
through the holes. It also helps knock scale off of
the igniter element.
Figure 60
The igniter is made to be removable for
service by insulated male/female wire connectors.
These connections between the hot leads (the
wires inside the burn pot) and the cold leads (the
wires from the control board) are always pulled to
the inside rear of the feeder body. (Not coiled
inside the burn pot.)
It is very important that these connections
are to the inside rear of the feeder body. Also, the
extra wire of the igniter wire service loop must be
pulled out through the rear of the feeder and tied
up so that it will not be damaged by any moving
parts.
Fig. 59
Burn pot igniter
DANGER
Disconnect the power to the unit before
removing cover.
WARNING
Use caution when cleaning burn pot clean-
out chamber. Do not damage the high
temperature igniter wires.
Igniter hot leadwires
(high temperature)
Note: The hot lead/cold lead connection
must always be pulled to the rear of the
feeder body before operation.
Fig. 60
Viewed frombelowthroughthe ash pan opening.
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30
Maintenance - Cleaning
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
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.
Fig. 62
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.
Primary Air Inlets
• 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.
Fig. 63
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31
Maintenance - Cleaning
Feeder Chamber
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:
• Remove the 5/16" wing nut.
• Slide the cover off of the threaded stud.
• Inspect and clean the inner chamber if necessary. See
Fig. 65.
• Reinstall the cover making certain it is centered on the
feeder body and tighten as tightly as you can by hand.
The combustion blower is made to be removed easily for
inspection and cleaning. See Fig. 67.
The combustion blower is mounted on a precision cut
gasketless mounting plate. This plate is held into place
with (3) thumb screws. See Fig. 67.
Feeder
rear
chamber/
clean out
cover
ESP
5/16"
wing nut
Fig. 64
To remove the combustion blower:
• Turn the thumb screws counterclockwise approximately
5 turns. Rotate the entire assembly counter clockwise
until the points of the retaining slots are visible.
• Remove the blower assembly with the fan blade by
pulling it directly away from the blower housing.
• The cord on the motor is long enough to allowthe motor
to be set down on the black plastic fan cover. This allows
for easy access to inspect and clean the area. See Fig.
66.
Pellet
Metering
slide plate
• Withthe blower assembly out, inspectionshouldbe done
on the surfaces of the blower assembly and the housing
openingwhere theymeet. Thesesurfaces MUST be clean
and free from dirt, grit, flyash, soot or nicks in the metal.
This gasketless seal relies on an extremely close
tolerance. Therefore, anythingother thana cleanjoint may
cause exhaust gases and/or flyash to escape.
• The assembly can only be reinstalled in one position:
with the motor winding in the upward location. See Fig.
67. The mounting plate will not allowfor anyother position.
• Alwyas make sure that the assembly is fully seated and
the (3) thumb screws are tightened before operating the
unit.
Possible pellet
fines buildup
area.
Fig.65
Close
l
Tolerance
l
Mating
Surface
Close
l
Tolerance
l
Fig. 67
Fig. 66
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31
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33
Trouble-Shooting
FEEDER DOES NOT FEED
3. Something is restricting fuel flow.
4. Feed motor or draft motor has failed.
5. Power failure or blown fuse.
1. No pellets in hopper.
2. Firebox draft may be too low for low draft pres-
sure switch in feeder circuit to operate.Check for
open doors, loose or missing gasket on doors or
hopper lid, faulty pressure switch.
3. Feed motor will not run until ESP
senses 165 deg. F. Maybe you did not put
enough pellets in the burn pot before lighting the
fire.
SMOKE IS VISIBLE COMING OUT OF VENT
1. Air-fuel ratio is too rich.
A. Feed rate too high.
B. Draft too low caused by a gasket leak.
LOW HEAT OUTPUT
4. Something is restricting flow in the hopper or
causing the slide plate to stick.
5. Feed motor has failed.
1. Feed rate too low
2. Draft too low because of gasket leak.
3. Poor quality or damp pellets
4. Combination of 1. and 2.
PARTIALLY BURNED PELLETS
1. Feed rate too high.
Helpful Hints
2. Draft too low. (Check burn pot clean out slide
and door gasket).
3. Burn pot or heat exchanger tubes may need to
be cleaned.
Cleaning Burn Pot
Whenever your stove is not burning, take the op-
portunity to scrape the burn pot to remove carbon
buildup. A vacuum cleaner is handy to remove the resi-
due. Be sure the stove is cold if you use a vacuum.
Carbon buildup can be scraped loose with the fire
burning using the special tool provided with your stove.
Scrape the floor and sides of the burn pot. The carbon
will be pushed out by the incoming fuel. Always wear
gloves to do this.
4. Combination of all the above.
5. #6 status blink: A 6 blink control board status
indication is caused by poor or incomplete com-
bustion. The Automatic Ignition circuit board has
the ability to track the combustion through feed
settings and ESP temperatures. When the control
board has calculated poor or incomplete combus-
tion it will shut down the unit as a safety feature.
(Poor or incomplete combustion is a contributer of
creasote which may cause a chimney fire)
A 6 blink status may be caused by several things:
1. Blocked or partially blocked flue.
2. Blocked or partially blocked inlet air.
a. backdraft damper on the inlet pipe may be
stuck closed.
b. if outside air is installed the inlet cover may be
blocked.
3. The air chamber under the burnpot may be filled
with fines and small bits of ash.
4. The holes in the burnpot may be getting filled
with ash or carbon buildup.
5. Combustion blower fan blades may need
cleaned.
Removing Ashes
Turn the Temp Dial to number 1 approximately 30
minutes before removing ashes. This will result in a
cooler stove and ash pan.
Maximum Feed Adjuster settings are not needed
in most cases. Operating in the normal range (#4) is
recommended when maximum heat output is not re-
quired. The ESP probe prevents the stove from being
over-fired.
Keep the stove free of dust and dirt.
Fuel
Pellet fuels are put into 3 categories in terms of
ash content. Premium at 1% or less, Standard at 3% or
less and all others at 3% or more.
The Accentra is capable of burning all 3 categories
of pellets due to a patented feeder and burn pot system.
It should be noted, however, that higher ash con-
tent will require more frequent ash removal and may
provide less BTU's per pound. Normally, standard and
high ash pellets cost less than premium pellets and can
be cost effective when burned in the Accentra.
The moisture content must not exceed 8%. Higher
moisture will rob BTU's and may not burn properly.
6. Combustion intake assembly not properly
latched.
7. No fuel in hopper
SMOKE SMELL
Seal the vent pipe joints and connection to frame
with silicone.
FIRE HAS GONE OUT
1. No pellets in hopper.
2. Draft setting is too low.
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34
Specifications
Weight
450 lbs.
Blower
180 cfm
Hopper Capacity
Fuel
57 lbs. (24" hopper #1-90-00674)
Wood Pellets
Outside Air Size
Fuse Rating
BTU Range
Feed Rate
3 inches
6 amp
0 to 42,000
.75 lbs./hr. on minimum(on maintenance)
5 lbs./ hr. on maximum
4 inch Pellet Vent Pipe, standard,
3 inch Pellet Vent Pipe, option
Vent Size
Maximum Wattage 440 Watts (Start cycle and test)
Start Cycle Wattage 340 Watts
Normal Run Wattage 255 Watts
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35
Accentra Insert Wiring Diagram
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36
Accentra Insert Feeder Parts
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37
Accentra Insert Parts List
Description
Part Number
Hopper Lid Gasket
(5.25',1/2 x 3/8" silicone w/PSA)
Ignitor Element Assembly
Wiring Harness
Burn Pot Weldment
Heat Exchanger Cover (2)
Center Medallion (1)
Arrow Scraper
Flame Guide
Gear Motor
Thermister Probe
Room Sensor
3-44-375501
1-10-06620
3-20-08727
1-10-00675
3-00-674050
3-00-674060
2-00-773850
3-00-674069
3-20-60906
3-20-00744
3-20-00906
3-20-05237
Circuit Board G5237
25/8" Black CCW Fan Blade(auger motor) 3-20-2046399
Differential Switch
3-20-9301
43/4" SinglePaddleCombustion FanBlade 3-21-00661
Combustion Blower
Distribution Blower
Tailpipe Insulator
White/Black Control Knob (3)
Control Knob Shaft (3)
Front Glass w/gasket
Docking Gasket (red silicone)
Wood Handle
Wiring Diagram
Control Panel Sticker
Owner's Manual
Hopper Lid Label
Ash Pan Assembly
Cast Hopper Lid
3-21-08639
3-21-47120
3-44-674102
3-31-00968
3-31-00982
3-40-674090
3-44-06108
3-40-00123
3-90-09321
3-90-06655
3-90-00674
3-90-08416
1-10-674030
3-00-674059
3-31-5500
Ball Spring Plunger (3)
Glass Clips (4)
Power Cord
Flue Brush
3/8" Black Door Gasket (5 1/2 ft.)
2-00-249140
3-20-674200
3-40-00126
3-44-37525
Options:
Outside Air Assembly
Log Kit
Zero Clearance Cabinet
1-10-674080
1-00-674099
1-10-674070
Zero Clearance Box Flue Pipe Support 1-00-674119
4" PL vent stub
3" PL vent stub
1-00-674040
1-00-674039
See page 35 for
Feeder Part Numbers
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38
Harman Gold Warranty
HARMAN GOLD WARRANTY
6 YEAR TRANSFERABLE LIMITED
WARRANTY (Residential)
1YEAR LIMITED WARRANTY (Commercial)
Harman Stove Company warrants its products to be free from defects in material or workmanship, in normal use and
service, for a period of 6 years from the date of sales invoice and for mechanical and electrical failures, in normal use and
service, for a period of 3 years from the date of sales invoice.
If defective in material or workmanship, during the warranty period, Harman Stove Company will, at its option, repair or
replace the product as described below.
The warranty above constitutes the entire warranty with respect to Harman Stove Company products. HARMAN STOVE
COMPANY MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED, INCLUDING “ANY” WARRANTY OF
MERCHANTABILITY, OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. No employee, agent, dealer, or
other person is authorized to give any warranty on behalf of Harman Stove Company. This warranty does not apply if the
product has been altered in any way after leaving the factory. Harman Stove Company and its agents assume no liability for
“resultant damages of any kind” arising from the use of its products. In addition, the manufacturer and its warranty administra-
tor shall be held free and harmless from liability from damage to property related to the operation, proper or improper, of the
equipment.
THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF.
THESE WARRANTIES APPLY only if the device is installed and operated as recommended in the user’s manual.
THESE WARRANTIES WILL NOT APPLY if abuse, accident, improper installation, negligence, or use beyond rated
capacity causes damage.
HOW TO MAKE A CLAIM - Any claim under this warranty should be made to the dealer from whom this appliance was
purchased. Then contact is made with manufacturer, giving the model and serial numbers, the date of purchase, your dealer’s
name and address, plus a simple explanation of the nature of the defect. Extra costs such as mileage and overtime are not
covered. Nuisance calls are not covered by these warranties.
THIS WARRANTY IS LIMITED TO DEFECTIVE PARTS - REPAIR AND/OR REPLACEMENT AT
HARMAN STOVE COMPANY’S OPTION AND EXCLUDES ANY INCIDENTAL AND CONSEQUENTIAL
DAMAGES CONNECTED THEREWITH.
WARRANTY EXCLUSIONS: Failure due, but not limited to, fire, lightning, acts of God, power failures and/or surges,
rust, corrosion and venting problems are not covered. Damage and/or repairs including but not limited to; remote controls,
filters, fuses, knobs, glass, ceramic brick panels, ceramic fiber afterburners, door packing, tile, ceramic log sets, paint, batteries
or battery back-up and related duct work are not covered. Also excluded from this warranty are consumable or normal wear
items including but not limited to; flame guides, grates, coal bars, afterburner hoods, fire brick, gaskets. Additional exclusions
for corn stoves are burnpot housing weldment, burnpot grate weldment (pellet or corn), burnpot front plate (pellet or corn),
burnpot front plate lock, corn auger extension, ceramic insert, and ceramic insert plate. Additional or unusual utility bills incurred
due to any malfunction or defect in equipment and the labor cost of gaining access to or removal of a unit that requires special
tools or equipment are not covered. Maintenance needed to keep the stove in “good operating condition” is not covered. This
includes, but is not limited to, cleaning, adjustment of customer controls and customer education. Labor, materials, expenses
and/or equipment needed to comply with law and/or regulations set forth by any governmental agencies are not covered.
This Warranty provides specific legal rights and the consumer may have other rights that vary from state to state.
In the event of change in ownership, the remaining portion of this warranty may be transferred to the new owner by
sending the new owner information to the Harman Stove Company.
PLEASE READ THE LITERATURE BY THE MANUFACTURER FOR THE VARIOUS ACCESSORY DEVICES.
THE MANUFACTURER WARRANTS THESE ACCESSORY DEVICES, NOT HARMAN STOVE COMPANY OR THEIR
WARRANTY ADMINISTRATOR. FURTHERMORE, THESE ACCESSORY DEVICES MUST BE INSTALLED AND
USED ACCORDING TO THE RECOMMENDATIONS OF THE MANUFACTURER.
REMEDIES - The remedies set forth herein are exclusive and the liability of seller with respect to any contract or sale or
anything done in connection therewith, whether in Contract, in tort, under any warranty, or otherwise, shall not, except as herein
expressly provided, exceed the price of the equipment or part of which such liability is based.
CLARIFY - The above represents the complete warranty, which is given in connection with stoves, manufactured by
Harman Stove Company. No other commitments, verbal or otherwise, shall apply except by a written addendum to this
warranty.
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