Harman The Accentra Pellet Stove Installation instructions
“Ce manuel est disponible en Français sur demande”
FOR USE WITH PELLETIZED WOOD FUEL OR A SHELLED
CORN/PELLET MIXTURE ONLY.
Shelled Corn, when mixed with Pellets
(A)
(B)
(C)
USA Canada
8”/20cm
0”/0cm
18”/46cm A
A
B
C
(A)
(B)
(C)
USA Canada
8”/20cm
0”/0cm
18”/46cm
*
*Measured From Glass Opening
4
352 Mountain House Road
Halifax, PA 17032
www.harmanstoves.com
This heating appliance does not just have automatic ignition, it has total automatic temperature control. The
Accentra has an input heat range from 0 to 40,000 BTU's. This patented feed system has a maximum feed rate of
5 lbs. per hour and a minimum (maintenance) feed rate of .75 lbs. per hour and then "off" if necessary. The hopper
holds approximately 50 pounds of fuel. The unit has an easy to clean combustion system with an ash pan that holds
ash from 1 ton of burned premium pellets.
The control is designed for easy and efcient operation. It has 2 automatic modes of operation and 2 manual modes
of operation.
The Accentra uses a small room sensor rather than a wall thermostat for more accurate temperature control.
This unit is equipped with several different safety devices which will be explained later in this manual. With its specially
designed burn pot and the "Advance Igniter" Automatic Ignition System, the unit can burn a large variety of pelletized
fuels with varying ash content. The accordion style cast iron heat exchanger system allows maximum surface area
for the most efcient heat transfer in a smaller rebox.
SAFETY NOTICE: IF THIS HARMAN ACCENTRA PELLET
STOVE IS NOT PROPERLY INSTALLED. A HOUSE FIRE
MAY RESULT. FOR YOUR SAFETY, FOLLOW THE INSTAL-
LATION DIRECTIONS. CONTACT LOCAL BUILDING OR
FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLA-
TION INSPECTION REQUIREMENTS IN YOUR AREA.
Please copy
your
serial
number from
the label on your stove
to the box below.
Safety testing by Omni-Test Laboratories
ASTM-E1509-04 • ULC-S627-00 &
ULC/ORD-C1482-M1990• Oregon-814-23-900
per 40CFR-60.530 sup. part AAA
per EPA method 28A and 5G
Report # 135-S-10b-2
This appliance is also approved for
installation into a shop.
FOR USE WITH PELLETIZED WOOD FUEL OR A SHELLED
CORN/PELLET MIXTURE ONLY.
Shelled Corn, when mixed with Pellets
(A)
(B)
(C)
USA Canada
8”/20cm
0”/0cm
18”/46cm A
A
B
C
(A)
(B)
(C)
USA Canada
8”/20cm
0”/0cm
18”/46cm
*
*Measured From Glass Opening
Indicates that the ESP (Exhaust Sensing
Probe) has gone out of range too many times. If
the unit seems to be operating correctly, perform
a manual reset*.
Can occur only in Room Temp Mode
and indicates Room Sensing Probe failed or not
installed. 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.
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.)
: Indicates that the control has calculated
poor or incomplete combustion occurring for more
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
"OFF" then back on to the desired mode. If the unit
was not out of pellets, see Troubleshooting section,
Page 27, for more details.
- disconnect power cord for a few
seconds and reconnect. If error still occurs call your
Dealer.
Mode Selector
Allows you to choose between 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 low side of each mode.
Feed adjuster
Sets the maximum
feed rate
Test
Runs all motors at full
speed for one minute
to check operation.
After a minute, the
control will simulate a
minimum burn and the
combustion blower will
remain on low.
Distribution Blower speed
adjustment range.
L = low
H = high
Variable speed anywhere
between L and H;
although as the stove
temp. goes up , so does
the L and H scale.
Power Light
Indicates power to the
control.
Indicates power to the
feed motor.
Indicates power to
combustion blower
Status Light
Will be lit in either stove
or room temp mode when
pointer is not within off
position band except after
normal shut down. Blinks
to indicate errors listed
below.
Indicates power to
distribution blower.
Indicates igniter is on.
Igniter switch
Set to appropriate
Start-Up mode.
Temp dial
Allows you to adjust the
room temperature in Room
Temp Mode using the outer
scale marked in degrees
Fahrenheit. It also allows
you to adjust the stove
temperature while in Stove
Temp Mode using the inner
scale marked from 1 to 7.
Dealer Diagnostic Port
For dealer maintenance
only. Requires special DDM
monitor supplied to Harman
Dealers exclusively.
6
The Accentra pellet stove is more than just automatic ignition, it is also automatic
temperature control. The automatic system will allow the re size to be adjusted
to match the heating needs and even put the re out if necessary. If heat is
needed after the re is out, the Accentra will automatically re-ignite and adjust
the re size to match the heating need. The totally automatic room sensor mode
is recommended because of its efciency. The unit can be switched between
"AUTO" and "MANUAL" at any time during operation.
In "Room Temp Mode" heat output is controlled
automatically by the Room Sensing Probe. When the
Room Sensing Probe calls for heat, the stove will increase
output. When the Room Sensing Probe is getting close to
the set temperature, the stove will begin to level off output
and keep the re burning at just the right temperature to
maintain that setting.
High output is limited by the feed rate setting. The
control will feed what it needs to meet the demand, UP
TO the rate allowed by the Feed Adjuster dial setting. The
unit's maximum burn rate should not create less than 1" of
ash on the burn pot front edge (See Fig.4). Overfeeding is
not a safety concern, but fuel may be wasted if unburned
pellets fall into the ash pan.
In "Room Temp Mode" a constant fuel consumption
rate is sacriced for exact room temperature. Therefore,
as it gets colder more pellets will be burned automati-
cally.
The distribution blower speed will vary according to
the position of the mode selector pointer, and re size.
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
regardless of room temperature (See Fig 2). The unit's
maximum feed rate should not create less than 1" of ash
on the burn pot front edge (See Fig 4).
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 to "off".
To kill the re or stop burning the stove, turn the
Mode Selector to "OFF". This will cause the re to dimin-
ish and burn out. When the re burns out and the stove
cools down everything will stop.
If you pull the plug to shut down the stove, all mo-
tors will stop. This may cause incomplete combustion
and smoke in the rebox. If the load door is opened the
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 auto-
matically.
Fig. 2
Room Temperature Mode: This setting will produce a room temperature
of 70 degrees with the distribution blower at medium speed.
This setting will produce medium heat with the
distribution blower on "low".
This setting will produce continuous maximum heat
output with the distribution blower at full speed.
Fig. 1
...
...
Make sure the unit is plugged into a 120 VAC, 60
HZ electrical source. The power light should be
the only light lit.
To avoid unwanted smoke, Be sure
there is no fuel or other combustibles in the ash
pan prior to lighting.
Keep all doors closed during operation. Maintain
all seals and gaskets in good condition.
1.
2. with pellets.1
3. with scraper, if necessary.5
4.
(for one 60 second cycle).2
This will feed pellets into the auger tube and also
allow you to check the motors for operation.
5.
6. into the "AUTO"
position.
7. to the desired room
temperature.
8. to Room Temperature
or Stove Temperature.
9. with pellets and
as required.6
1. Fines are small pieces of broken pellets (sawdust). Fines do
not ow easily and often build up on the hopper funnel bottom
angles. These nes can be pushed into the feeder opening and
then ll 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 again may feed too much
fuel into the burn pot causing excessive smoke on start-up.
3. The rebox low pressure switch will not allow the auger motor
or the igniter element to operate if the view door is open.
4. Adjust Feed Rate. If this is your rst re or you are trying different
pellets, set the feed adjuster to #4, Fig. 3. This is a conservative
number and will probably need to be increased. After you know
a feed rate setting that works well, use that setting. Remember,
if your feed rate is too high you may waste fuel.
5. This is usually a weekly maintenance procedure. Cleaning
the burn pot with the scraper with a small 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 approximately 1 ton of
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 "Stove Mode" and put the fan on "H".
Set the Temperature Dial to #7. Allow the unit to burn for about
30 minutes and check ash on front of burn pot. Fig. 4. If the ash
line is larger than 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" 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.
See Hint #7.
Fig. 3
Fig. 4
1"
Helpful Hints
8
The Accentra Pellet Stove is capable of manual operation. This allows the operator
to manually control operation and fuel consumption. Manual operation can also be helpful
during an emergency (i.e. igniter failure, or when using certain generators.) The unit can be
switched between "AUTO" and "MANUAL" at any time during operation.
The re will have to be lit with starting gel and a match,
or started automatically, see "Automatic Operation". Turn
to "Manual" position when the re is established.
The difference between "AUTO" Room Temperature
Mode and "Manual" Room Temperature Mode is that
the re will not go out as the room temperature 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.
The advantage of this mode is to allow the operator to
have a large viewing re without blowing extra heat into
the room.
During operation, with the temperature dial set at #4
or less, the distribution fan will not operate. A #3 on the
temperature dial and a #4 on the feed adjuster is ap-
proximately 80% output. The distribution blower will not
operate below this point. Therefore, there can be a higher
feed rate ( a larger viewing re) without an excess of hot
air blowing into the room.
An example of when to use the Manual Stove Tempera-
ture Mode is if you want to watch a large re and the room
is already up to temperature. The Stove Temperature
Mode allows you to have a larger re and a lower sound
level, without the distribution blower.
Room Temperature Mode: This setting will produce a room temperature
of 70 degrees with the distribution blower at medium speed.
Fig. 5
This setting will produce a large viewing re without a
distribution blower operating.
Fig. 6
...
...
Turn the Mode Selector to "OFF". This will allow the re to diminish and burn out. When the re burns out
and the ESP cools, everything will stop. Never pull the plug to shut down the stove. This will cause incomplete
combustion and smoke in the rebox. If the load door is opened the 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 auto-
matically.
Make sure the unit is plugged into a 120 VAC,
60 HZ electrical source. The power light should be
the only light lit.
To avoid unwanted smoke, Be sure
there is no fuel or other combustibles in the ash
pan prior to lighting.
Keep all doors closed during operation. Maintain
all seals and gaskets in good condition.
. No. 4 is good for most pellets.4
This will reset the control
and start the combustion motor.
(Do Not Over Fill).
Stir the
gel into pellets for faster lighting.
Operation will begin when the re
reaches the proper temperature.3
1. Fines are small pieces of broken pellets (sawdust). Fines do not
ow easily and often build up on the hopper funnel bottom angles.
These nes can be pushed into the feeder opening and then ll 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 again may feed too much fuel
into the burn pot causing excessive smoke on start-up.
3. The rebox 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 rst re or you are trying different
pellets, set the feed adjuster to #4, Fig. 7. This is a conservative
number and will probably need to be increased. After you know a
feed rate setting that works well, use that setting. Remember, if
your feed rate is too high you may waste fuel.
5. This is usually a weekly maintenance procedure. Cleaning the
burn pot with the scraper with a small 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 approximately 1 ton of
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 "Stove Mode" and put the fan on "H".
Set the Temperature Dial to #7. Allow the unit to burn for about 30
minutes and check ash on front of burn pot. Fig. 9. If the ash line is
larger than 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" 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.
Fig. 8
Fig. 7
Fig. 9
1"
SeeHint#7.
Helpful Hints:
10
When installing and operating your Harman Accentra
Pellet Stove, respect basic safety standards. Read these
instructions carefully before you attempt to install or oper-
ate the Accentra. Failure to do so may result in damage
to property or personal injury and may void the product
warranty.
Several issues must be addressed when selecting a
suitable location for your Accentra Pellet Stove. Observing
required clearances to combustible materials, the proximity
to a safe chimney or venting system, and the accessibil-
ity of electrical supply must all be considered. In addition,
selecting a location that takes advantage of the building's
natural air ow is also desirable to maximize the heating
effectiveness of the heater. In many cases, this is a central
location within the building.
Place the stove on a noncombustible oor surface or oor
protector. This can be a minimum of a 20 gauge sheet metal
plate, ceramic tile with grouted joints, a UL listed stove
board, or a Harman Cast Iron oor protector1.
The Harman
Cast Iron Floor Protector is equal to the minimum dimensions
which are 24
1
/
16 x 285/8
1. This allows for a 2" extension on
each side of the unit (which is actually
opening) and a 6" extension to the front (measured
opening also) (33/8"2 if measured from the
base plate front edge.) The rear edge of the oor protection
can be ush with the cast base plate rear edge.
Place the stove away from combustible walls at least as
far as shown in gures 10, 11, & 13. Minimum clearance
to a ceiling above the heater is 24".
Note that the clearances shown are minimum for safety
but do not leave much room for access when cleaning or
service is needed.
Fig.12
FLOOR
PROTECTOR1
Fig.11
Fig.10
This is the minimum size Harman
recommends for the alcove with a 60" ceiling.
54"
2.25"
14.75" 14.75"
24"
Fig. 13
(*Harman Cast Iron Floor Protector size.)
The Accentra is shipped bolted
to the skid through two holes in the cast base plate.
If these holes are not used to lag the unit to the oor
these holes must be lled with the 3/8" x 1/2" hex head
bolts provided. (See tag on bolt bag provided.)
Skid bolt down holes/oor lag down holes
Fig. 14
Leveling/vibration-dampening feet
Fig. 15
Optional kit #1-00-12302 contains 4 rubber pad feet.
Used to raise the bottom edge of the cast base plate
off the oor surface, they ensure that any vibrations
caused by motors and other moving parts will not be
transferred by direct contact. These rubber pads have
a threaded stud that extends through the base plate.
The top of the threaded stud has a screwdriver slot.
Therefore, the unit can be leveled from above inside
the unit. The front two are in the right and left front
corners of the rebox. NOTE: The door will need to be
partially closed to access the right leveling pad stud
due to the door hinge.
The rear two studs are to the right and left of the
distribution blower. They are somewhat difcult to
reach, therefore, it is suggested that the rear two pads
be adjusted by tilting the unit slightly forward. Adjust
the pads with your ngers and tilt unit back for t. Then
adjust the front pads for the nal clearance.
There is a leg kit available for the Accentra (Item # 1-
00-247211). The four cast iron legs bolt to a plate, and
the stove then sits on the plate. The rubber leveling feet
are removed to allow the stove to t down over the leg
plate. The leg kit adds 2.95 inches in height. The leg
kit can also be used in conjunction with the cast oor
protector. If using with the cast oor protector, a oor
protector cover is also needed since the legs allow
viewing underneath the stove.
Leg Kit includes;
four legs, mounting
plate and hardware.
12
When installing the Accentra in a mobile home several
requirements must be followed:
1. The unit must be bolted to the oor. This can be done
with 1/4" lag screws through the 2 holes in the base plate
shown in Fig. 16
2. The unit must also be connected to outside air. See
page 15.
3. Floor protection and clearances must be followed as
shown on page 10.
4. Unit must be grounded to the metal frame of the
mobile home.
Due to high temperatures, the Accentra should be
placed out of trafc and away from furniture and drap-
eries.
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 ammable materials should not be
placed on or near the Accentra Pellet Stove.
Installation and repair of the Accentra Pellet Stove
should be done by a qualied service person. The ap-
pliance should be inspected before use and at least
annually by a qualied service person. More frequent
cleaning will be required. It is imperative that control
compartments, burners, and circulating air passage-
ways of the Accentra be kept clean.
Before the rst re is lit, check and record the high
and low draft reading numbers on page 13. Make
adjustments to the low draft at this time, if necessary.
Unit bolt down holes for mobile home installation
lag to oor with 1/4" diameter lag bolts with washer.
(not supplied.) Note: If the optional leg kit is used,
a longer bolt will be required.
Fig. 16
These units are pre-tested at the factory with exactly
120 Volts AC, 60 Hz. They are checked and adjusted
for rebox tightness, gasket leakage, motor operation
and igniter operation. The Accentra is then factory set
at a high adjustment.
The control board on the Accentra is equipped with
a low draft adjustment port. Located on the control
face just to the left of the igniter light. See Figure 17.
This voltage adjustment is provided to allow the unit
to be adjusted for the household voltage where the
unit is going to be in permanent 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 efcient 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 to
ensure proper set up.
If the unit is not adjusted properly, it does not cause
a safety concern. If the unit is adjusted too high, only
efciency 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 ue pipe installation. Record the
results for future reference:
1. Plug unit into a 120 VAC, 60 HZ outlet.
2. Close the hopper lid and front view door. Neither
pellets or a re 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 1 minute.
5. After 1 minute, 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 slow before 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 slowly turn the set
screw clockwise until the draft increases.
Combustion
Motor Speed
Control
Low draft only
set point.
The small straight
screwdriver slot is
plastic; therefore,
the unit can be
adjusted while in
operation.
Fig.17 Draft Meter bolt hole location
Fig. 18
14
The room sensor is a small temperature sensor on
the end of a 60" wire. This sensor is installed much like
a standard wall thermostat. Because it is so small, it
can be hidden along the trim of a doorway or even up
the leg of a coffee table. There is a remote room sensor
port on the rear of the unit for easy external connec-
tion. Use standard 18-2 thermostat wire to extend the
distance to the desired location (100' maximum). The
room sensor should be installed in the location where
you want to control the temperature.
Distances of more than 25 feet from the
unit or in another room are not recommended. The
room sensor is essential for the Accentra's excellent
efciency.
even if only installed on the rear of the unit
as a return air sensor. There is an intake screen on
the bottom of the rear sheet metal enclosure. This is
an ideal place to tie wrap the sensor head to sense
return air temperature.
Fig. 19
Fig. 20
5/16" Hex Head
Screws (2 on
each side)
5/16" Hex Head
Screws (2 on
each side)
The rear insulated shields are split in the middle
for easy removal. Each shield has two 5/16" hex
head screws that only need to be loosened (NOT
REMOVED) to allow the shield to slide away from the
unit.
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 operation.
There is also a switch to determine the positioning
of the hopper lid. If the lid is not closed properly, the
feed motor and igniter will be disabled. (See wiring
diagram)
Fig. 21
Hopper Lid Foam
Gaskets
Hopper lip
A combustion blower is used to extract the combus-
tion gases from the rebox. This causes a negative
pressure in the rebox and a positive pressure in the
venting system as shown in g. 22. The longer the vent
pipe and more elbows used in the system, the greater
the ow resistance. Because of these facts we recom-
mend using as few elbows as possible and 15 feet or
less of vent pipe. The maximum horizontal run should
not exceed 48". If more than 15 feet of pipe is needed,
the diameter should be increased from 3" to 4" because
a larger pipe causes less ow resistance.
Be sure to use a starting collar to attach the
venting system to the stove.
The screws provided are a self-drilling type
of screw. However, due to material thickness, drilling a
3/32" pilot hole is recommended for each screw. You
may also wish to seal this connection with RTV silicone
caulking.
Pellet venting pipe (also known as PL vent) is con-
structed of two layers with air space between the lay-
ers. This air space acts as an insulator and reduces
the outside surface temperature 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 the Accentra operates with a
positive vent pressure,
Connection to outside air is strongly recommended. It
is required for all mobile home installations, and where
building codes require.
To install outside air use 2 3/8" I.D. ex pipe, part
number 1-00-08543 (25 feet). There is a break-away
hole on the rear panel which must be removed before
connecting the ex pipe. The pipe should be run outside
and terminate to the side or below the vent pipe outlet so
the ue outlet is more than 12" from the inlet cover. The
maximum length run of this pipe is 15 feet. If a longer run
is needed, the size must be increased to 3". Inlet cover
part number 1-10-08542 should be used to keep birds,
rodents, etc. out of the pipe.
You may choose to use the optional Direct Vent Wall
Passthrough Kit (part #1-00-677077) which incorporates
venting passthrough and outside air into one component.
See Fig. 24b.
3 or 4 inch Pellet Vent Pipe -
(Type PL) Must be used.
Outside air ex pipe
goes here
Room Sensor
Connection Ports
3" PL vent pipe
ue collar
Fig. 23
+ = Positive static pressure
= Negative static pressure
Fig.22
Inlet Cover
(part # 1-10-08542)
25' Flex pipe
(part # 1-00-08543)
Fig. 24
Direct Vent Wall
Passthrough Kit
(part #1-00-677077)
Fig. 24b
16
Avoiding Smoke and Odors
Negative Pressure, Shut-down, and Power
Failure:
T
without exhaust
blower operation. Negative pressure in the house
will resist this natural draft if not accounted for in the
pellet appliance installation.
Heat rises in the house and leaks out at upper
levels. This air must be replaced with cold air from
outdoors, which ows into lower levels of the house.
Vents and chimneys into basements and lower levels
of the house can become the conduit for air supply,
and reverse under these conditions.
Per national building codes, consideration must be
given to combustion air supply to all combustion ap-
pliances. Failure to supply adequate combustion air
for all appliance demands, may lead to back-drafting
of those and other appliances.
When the appliance is side-wall vented: The air
intake is best located on the same exterior wall as
the exhaust vent outlet and located lower on the wall
than the exhaust vent outlet.
When the appliance is roof vented: The air intake
is best located on the exterior wall oriented towards
the prevailing wind direction during the heating
season.
The outside air connection will supply the demands
of the pellet appliance, but consideration must be
given to the total house demand. House demand
may consume some air needed for the stove, es-
pecially during a power failure. It may be necessary
to add additional ventilation to the space in which
the pellet appliance is located. Consult with your lo-
cal HVAC professional to determine the ventilation
demands for your house.
To reduce probability of reverse drafting
during shut-down conditions, Hearth & Home
Technologies strongly recommends:
• Installing the pellet vent with a minimum
vertical run of ve feet, preferably terminating
above the roof line.
• Installing the outside air intake at least four feet
below the vent termination.
To prevent soot damage to exterior walls of the
house and to prevent re-entry of soot or ash into
the house:
• Maintain specied clearances to windows,
doors, and air inlets, including air conditioners.
• Vents should not be placed below ventilated
softs. Run the vent above the roof.
• Avoid venting into alcove locations.
• Vents should not terminate under overhangs,
decks or onto covered porches.
• Maintain minimum clearance of 12 inches from
the vent termination to the exterior wall. If you see
deposits developing on the wall, you may need
to extend this distance to accommodate your
installation conditions.
This method provides excellent venting for normal
operation and allows the stove to be installed clos-
est to the wall. Two and a half inches from the wall
is safe; however, three inches allows better access
to remove the rear panel. The vertical portion of the
vent should be three to ve feet high. This vertical
section will provide natural draft in the event of a
power failure.
Fig.25
Fig.26
This method also provides excellent venting for
normal operation but requires the stove to be in-
stalled farther from the wall. The vertical portion of
the vent should be three to ve feet high and at least
three inches from a combustible wall. This vertical
section will provide natural draft in the event of a
power failure.
3 ft.
to combustibles
3 ft.
to combustibles
18
This method provides excellent venting for normal
operation. Check your local code requirements.
Some areas require that a liner be installed to the top
of the ue, as shown in method #7. This method will
provide natural draft in the event of a power failure.
If the chimney condition is questionable or if the ue
size is larger than 8 X 8 inches, you should refer to
method #7. If choosing this method, increase the
vent pipe to 4 in. at the stove.
Fig.27
Fig.28
This method provides excellent venting for normal
operation. Check your local code requirements.
Some areas require that a liner be installed to the
top of the ue, as shown in method #6. This method
also provides natural draft in the event of a power
failure.
The damper area must be sealed with a steel
plate (not supplied). Kaowool, mineral wool, or an
equivalent non-combustible insulation is recom-
mended to be installed on top of the sealing plate.
This will help to reduce condensation. A cap should
be installed on the chimney to keep out rain. If the
chimney condition is questionable or if the ue size is
larger than 8 X 8 inches, you should refer to Method
#6. If choosing this method, increase the vent pipe
diameter to 4 inches at the stove.
This method provides excellent venting for normal
operation. This method also provides natural draft
in the event of a power failure.
Some places in the US and Canada, it is required
that the vent pipe extend all the way to the top of
the chimney.
In this method a cap should also be installed on
the chimney to keep out rain. Be sure to use ap-
proved pellet vent pipe ttings. Seal pipe joints with
silicone in addition to the sealing method used by
the manufacturer. Pipe size should be increased to
4" using this method.
This method provides excellent venting for normal
operation. This method also provides natural draft
in the event of a power failure.
Some places in the US and Canada, it is required
that the vent pipe extend all the way to the top of the
chimney. The pipe or liner inside the chimney should
be 4" diameter and approved for pellet venting.
In this method a cap should also be installed on
the chimney to keep out rain.
Fig.29
Fig.30
20
Min. above ground level
18"
It is required that outside air
be installed with this venting
conguration to reduce smoke and
creosote smell in the room in the
event of power failure.
Through the ceiling vent, follow PL vent
manufacturers recommendations when using wall
and ceiling pass through. Note: Do not place joints
within wall pass-throughs.
PL vent manufacturer's
firestop spacer and
support
No insulation or
other combustible
m a t e r i a l s a r e
allowed within
3" of the PL vent
pipe.
Storm collar
Flashing
3" min.
3" min.
3" min.
12" min.
(See Page 10 for
corner installation
clearances)
Fig. 31 Fig. 32
Fig. 33
36" min clearance to any
combustible material
12" min. wall to outlet
Shaded area represents the
minimum clearance to combustible
materials such as shrubbery,
mulch or tall grasses.
This manual suits for next models
2
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