Harman XXV Installation instructions
R1
# 3-90-00684
3
XXV Pellet Stove
Pellet fuel quality can uctuate from manufacturer to
manufacturer, and even from bag to bag.
Hearth & Home Technologies recommends using only
fuel that is certied by the Pellet Fuels Institute (PFI).
Fuel Material
• Made from sawdust and/or other wood by-products
• Shelled eld corn (when mixed with wood pellets)
• Source material typically determines ash content
Higher Ash Content Material
• Hardwoods with high mineral content
• Bark and leaves as source material
• "Standard" grade pellets, corn and other biomass
Lower Ash Content Material
• Softwood; pine, r, etc.
• Materials with lower mineral content
• "Premium" grade pellets
Shelled eld corn
• Must be 15% moisture content or less
• Must be clean and free of debris
• Must be mixed with wood pellets. (Up to 50%)
• Stalk parts, excessive nes and cob remnants may
cause feed system jams or blockage
CAUTION! Do not burn fuel that contains an addi-
tive; (such as soybean oil)
• May cause hopper re
• Damage to product may result
Read the list of ingredients on the packaging. If you are
buying eld corn, the only ingredient listed should be
eld corn.
WARNING! Risk of Chemical Poisoning!
Do NOT burn treated seed corn
• Chemical pesticides are harmful or fatal if swallowed
• Burning treated seed corn will void the product war-
ranty
Clinkers
Minerals and other non-combustible materials, like sand,
will turn into a hard glass-like substance when heated.
Trees from different areas will vary in mineral content.
For this reason, some fuels will produce more clinkers
than others.
Moisture
Always burn dry fuel. Burning fuel with high moisture
content takes energy to dry and tends to cool the appli-
ance thus, robbing heat from your home. Damp pellet
fuel could turn back into sawdust which does not ow
properly through the feed system.
Size
• Pellets are either 1/4 inch or 5/16 inch (6-8mm) in
diameter
• Length should be no more than 1-1/2 inches
(38mm)
• Pellet length can vary from lot to lot from the
same manufacturer
Performance
• Higher ash content requires more frequent main-
tenance.
• "Premium" grade pellets will produce the highest
heat output.
• Burning pellets longer than 1-1/2 inches (38mm)
can cause inconsistent feeding and/or ignition.
We recommend that you buy fuel in multi-ton lots
whenever possible. However, we do recommend try-
ing different brands prior to purchasing multi-ton lots,
to ensure your satisfaction.
CAUTION! Tested and approved for use with wood
pellets and a mixture of shelled eld corn and wood
pellets ONLY. Burning of any other fuel will void your
warranty.
When changing from wood pellets to a corn/pellet
mixture, the FEED ADJUSTER will likely need adjust-
ed to a lower setting. When under maximum demand,
ensure there is no unburned fuel being pushed into
the ash pan.
Storage
• Wood pellets should be left in their original sealed
bag until ready to use, to prevent moisture.
• Shelled corn should be stored in a tightly sealed
container to prevent moisture and to deter pests
• Do not store fuel within the specied clearance ar-
eas, or in a location that will interfere with routine
cleaning and maintenance procedures.
Tested and approved for use with wood pellets
and a mixture of shelled eld corn and wood pel-
lets ONLY. Burning of any other fuel will void your
warranty.
Hearth & Home Technologies is not responsible for
stove performance or extra maintenance required
as a result of using fuel with higher ash or mineral
content.
4XXV Pellet Stove
FOR USE WITH PELLETIZED WOOD FUEL OR CORN/PELLET MIXTURE ONLY.
CONSULT MANUFACTURER’S INSTRUCTIONS.
135-S-14c-6.2
FLOOR PROTECTION:
USA CANADA
Sides (A)* 6” /15cm 8”/20cm
Back (B) 0” 0”
Front (C)* 6”/15cm 18”/46cm
*Measured from window opening.
A
B
C
A
PROTECTION DU PLANCHER:
EU CANADA
(A)* 6” /15cm 8”/20cm
(B) 0” 0”
(C)* 6”/15cm 18”/46cm
*
Harman Home Heating- 352 Mountain House Road - Halifax, PA 17032
5
XXV Pellet Stove
352 Mountain House Road
Halifax, PA 17032
Assembly & Installation 6
Installation 7
Venting 8
ESP Control 16
Low Draft Voltage Adjustment 17
Automatic Operation 18
Manual Operation 21
Room Sensor 23
Maintenance 24
Options 28
Trouble Shooting 29
Specications 30
Wiring Diagram 30
Power Failure / Back-up 31
Warranty 32
Corn Burning Info 34
Service Parts List 35
Thank you for purchasing the Harman XXV Pellet Stove. The Harman XXV Pellet Stove is the culmination of
elegance, convenience, functionality and dependability
The XXV was thoughtfully designed to look captivating in every home. Intricately detailed oak leaves express
the magnitude of craftsmanship that goes into making this stove a masterpiece. These beautiful castings are
proudly made in the U.S.A.
Built to strict Harman standards, the XXV has the most advanced construction of any Harman Pellet Stove. This
25th Anniversary Stove is based on Harman's patented pellet stove technology and goes a few steps further.
The glass hopper lid allows you to see the fuel level while the mirrored front glass transforms into clear glass
with the radiance of the re.
A new concept for the XXV is the ability to use the top vent option. Using this method, the XXV can easily replace
a wood stove by placing the top vent adapter over the rear vent.
We put all of our favorite features into the XXV, fusing the highest caliber pellet stove innovations with the allure
of cast iron.
This label is located
on the back of the
unit.
Please copy the
Serial Number for
future reference.
Serial #:
Note: This appliance is also approved for
installation into a shop.
XXV
Omni-Test Laboratories
Pellet Burning Room Heater
ASTM E1509-04, ULC S627 and ULC
C1482-M91. In accordance with OAR 814-23-900
through 814-23-909
6XXV Pellet Stove
Install the cast
iron flame guide
on top of the burn
pot. Make sure that
the flame guide is
fully seated on the
vertical sides of the
burn pot and that the
back of the guide
rests against the
burn pot mounting
ange.
Some
brands of pellet venting require a 3" clearance
to combustibles, while other brands may require
only one inch. Figure 1
The power cord is tucked inside the left rear cover
panel. To remove cord, Loosen the two 5/16" hex
heads and slide the panel outward.
7
XXV Pellet Stove
Place the stove on a non-combustible oor
protector that extends a minimum of 6 inches
to the front (152mm), 6 inches to the sides
(152mm) and ush with the rear of the hopper.
Front and side oor protection measurements
are made from the rebox or window opening.
Floor protection must also be positioned under
horizontal ue pipe. The minimum oor protec-
tor material is 20 gauge sheet metal. Other
oor protector materials are ceramic tile, stone,
brick, etc.
Place the stove away from combustible walls
at least as far as shown in Figures 2 and 3.
Note that the clearances shown are minimum
for safety but do not leave much room for access when
cleaning or servicing. Please take this into account when
placing the stove.
Connect the power cord to a 120 V.A.C. 60Hz grounded
receptacle. (A surge protector is recommended to protect
the circuit board.) Also be sure that the polarity of the outlet
that the stove is plugged into is correct.
Prior to installing the ue pipe, connect a draft meter.
(The draft meter must have a minimum range of 0-.5.)
Record the rst reading. Connect ue pipe to stove and be
sure all doors and windows in the home are closed. Record
the second draft reading_______. If the second reading
is more than .05" lower than the rst reading, check for
possible restrictions or the need for outside air (see page
10). For more information on the draft test procedure, refer
to Page 17.
When installing this unit in a mobile home several re-
quirements must be followed
(Reference HUD Regulation
#24CFR3280)
:
1. The unit must be bolted to the oor. This can be done
by using clips (part # 2-00-677110B) and 1/4" lag screws.
2. The unit must also be connected to outside air. See
page 10.
3. Floor protection and clearances must be followed as
shown.
4. Unit must be grounded to the metal frame of the mobile
home.
from
back of top
ue vent to
wall
Fig. 5: Optional Top Vent Pipe Clearances
Fig. 2
Fig. 3
Fig. 4
32" minimum
32" minimum
(152mm)
from
pipe to wall
*Measure front and side floor protection from the glass opening.
8XXV Pellet Stove
WARNING: Venting terminals must not be recessed
into a wall or siding.
NOTE: Only the Harman Direct Vent Wall Pass-through
(part # 1-00-677077) or PL listed vent pipe wall pass-
throughs and re stops should be used when venting
through combustible materials.
NOTE: Always take into consideration the effects of
the prevailing wind direction or other wind currents
that may cause yash and/or smoke when placing the
termination vent.
A. The clearance above grade must be a minimum of
18".
B. The clearance to a window or door that may be
opened must be a minimum of 48" to the side, 48"
below the window/door, and 12" above the window/
door.
C. A 12" clearance to a permanently closed window
is recommended to prevent condensation on the win-
dow.
D. The vertical clearance to a ventilated soft located
above the terminal within a horizontal distance of 2 feet
(60 cm) from the center-line of the terminal must be a
minimum of 18".
E. The clearance to an unventilated soft must be a
minimum of 12".
F. The clearance to an outside corner is 11" from center
of pipe.
G. The clearance to an inside corner is 12".
H. A vent must not be installed within 3 feet (90 cm)
above a gas meter/regulator assembly when measured
from the horizontal center-line of the regulator.
I. The clearance to service regulator vent outlet must
be a minimum of 6 feet.
J. The clearance to a non-mechanical air supply inlet
to the building or the combustion air inlet to any other
appliance must be a minimum of 48”.
K. The clearance to a mechanical air supply inlet must
be a minimum of 10 feet.
L. The clearance above a paved sidewalk or a paved
driveway located on public property must be a minimum
of 7 feet.
M. The clearance under a veranda, porch, deck or
balcony must be a minimum of 12 inches.
NOTE: The clearance to vegetation and other exterior
combustibles such as mulch is 36” as measured from
the center of the outlet or cap. This 36” radius continues
to grade or a minimum of 7 feet below the outlet.
Certain Canadian and or Local codes or regulations
may require different clearances.
A vent shall not terminate directly above a side-
walk or paved driveway which is located between two
single family dwellings and serves both dwellings.
Only permitted if veranda, porch, deck, or balcony is
fully open on a minimum of 2 sides beneath the oor.
9
XXV Pellet Stove
A combustion blower is used to extract the
combustion gases from the rebox. This causes a
negative pressure in the rebox and a positive pres-
sure in the venting system as shown in Fig. 6. The
longer the vent pipe and more elbows used in the
system, the greater the ow resistance. Because
of these facts we recommend 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 interior
diameter should be increased from 3" to 4" because
a larger pipe causes less ow resistance.
The use of a starting collar is
not always necessary. The rst piece of pellet vent
pipe must be fastened to the appliance ue collar
with at least 2 fasteners. The two fasteners provided
are a self-drilling type, however, due to material
thickness, drilling a 3/32" pilot hole for each screw
is recommended.
Pellet venting pipe (Known as "L" or "PL" vent-
ing) is constructed of two layers with air space
between the layers. This air space is an insulator
which reduces the surface temperature and allows
a clearance to combustibles of 3 inches or less. 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 XXV operates with a positive vent pressure we
specify that the
Aluminum tape can also be used for any joint that is
1 ft. or more from the outlet of the stove.
When using the top vent option, 6 inch single
wall pipe must be connected with at least three (3)
screws at each joint. Also, the joints must be sealed
with high temperature silicone.
We cannot emphasize enough, the importance of
sealing every seam and joint in the venting system
which is inside the home. Even the smallest pin hole
can leak and when it does you will smell wood smoke
or a creosote smell in the room. If this occurs check
for leaks. Leaks are easiest to see during start-up.
Alternatively you can use a smoke pellet to leak test
the venting before lighting your rst re.
Approved Pellet Vent Pipe Must Be Used unless
installing with the optional top 6" Flue Adapter.
If using 6" Flue Adapter, it is recommended to
use a sealed seam 6" ue pipe (snaplock seam
is not recommended) secure each joint with at
least 3 screws, and seal with high temperature
silicone.
In some cases it may be necessary to use a liner
in the existing chimney to obtain proper draft.
= Positive Static Pressure
= Negative Static Pressure
+
-
Fig. 6
10 XXV Pellet Stove
Outside air ex pipe
goes here.
Inlet Cover part#
1-10-08542
Flex pipe part#
1-00-08543 (25')
To install outside air use 2 3/8" I.D. non-combustible
ex pipe. There is a break-away hole on the rear panel
of the stove which must be removed to connect the ex
pipe. 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 unless the
Harman wall passthrough is being used.
Fig. 7
Fig. 8
Outdoor Half
Indoor Half
Adjustable from 4 1/2" to
10 5/8" wall thickness
T
without exhaust blower op-
eration. 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 appli-
ances. 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 ex-
haust 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, especially 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 local HVAC professional to determine
the ventilation demands for your house.
The Harman Direct Vent Wall Passthrough (Part
# 1-00-677077) makes installing your Harman Pellet
Stove with outside air easier. It combines the needed
wall protection for the venting, with a source of intake
air for combustion. It is made to t walls from 4 1/2" to
10 1/8" thick with a single square opening in the wall
of 6-1/2 inches.
11
XXV Pellet Stove
This method provides excellent venting for nor-
mal operation and allows the stove to be installed
closest to the wall. Two inches from the wall is
safe; however, four 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 help provide natural draft in the event of
a power failure.
Fig. 9 3 ft.
to combustibles
Fig. 10
12" min. wall to outlet
3 ft.
to combustibles
3 ft.
to combustibles
3 ft.
to combustibles
Fig. 11
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.
If the stove is installed below grade be sure the
vent termination is at least 18" above grade. The
outlet must also be 1 foot from the house/building.
Note: Do not place joints within wall pass-
throughs.
12 XXV Pellet Stove
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 #6.
*The chimney should be inspected and cleaned
before installing your stove. If you discover that
the chimney does not have a clay tile liner or has
cracks or aking of the tile liner you will need to
install a stainless steel liner within the chimney. In
most cases the inside diameter of this liner should
be 4". Either exible or rigid liner may be used for
this purpose. Refer to Method 6.
Be sure to design the venting so that it can be
easily cleaned.
Fig. 12
Fig. 13
This method will allow single wall 6" ue pipe to
come off the top of the stove and go directly into a
masonry or class A chimney.
This method will be desirable for people who are
replacing a wood or coal stove and have an existing
chimney to use.
from
pipe to wall
13
XXV Pellet Stove
This method can be done with or without a ue
liner. Without a liner, the damper area must be sealed
off with a steel plate. Kaowool, mineral wool or an
equivalent non-combustible insulation is recommend-
ed on top of the steel plate to minimize condensation.
In this method a cap should also be installed on the
chimney to keep out rain.
Some places in the US and Canada require that
the vent pipe extend all the way to the top of the
chimney. Per ULC S628.
Be sure to use approved pellet vent pipe ttings.
Seal pipe joints with silicone or aluminum tape in
addition to the sealing system used by the manu-
facturer. 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.
In this method a 4 inch liner is installed the entire
length of the ue. Whether using a rigid or exible
liner, a cap should be installed on the chimney to
keep out rain.
Fig. 14
Fig. 15
14 XXV Pellet Stove
This method allows the installer to use 6" or 8"
single and double wall stove pipe ( sealed seam not
snap lock ) and
an existing masonry or class A chimney to vent the
stove.
The stove must use pellet vent and 90 degree
elbow to start at the stove connector and then use
the approved pipe adapter to connect to the size
of vent that continues into the chimney connector.
Support of the assembly must follow any pipe and
connector manufacturers recommendations.
Due to combustible fuel, vent pipe to hopper
clearances must meet guidelines stated by NFPA
or local codes.
Through the ceiling vent, follow vent manufacturers
recommendations when using a wall or ceiling pass
through.
Fig. 17
PL vent manufacturer's
firestop spacer and
support
Storm collar
Flashing
3" min. 3" min.
12" min.
3" min.
3" min.
No insulation or
other combustible
materials are
allowed within 3" of
the PL vent pipe.
Fig. 16
15
XXV Pellet Stove
It is recommended that outside
air be installed with this venting
conguration to reduce smoke
and creosote smell in the room
in the event of power failure.
18"
Fig. 18
Min. above ground level
12" min.
wall to outlet
36" min clearance
to any materials that
may be affected by
the elevated exhaust
temperatures
Fig. 19
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.
16 XXV Pellet Stove
Power Light
Indicates power to the control.
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 that the ESP (Exhaust Sensing
Probe) has gone out of range too many times. If the
stove seems to be operating correctly, perform a
manual reset*. May indicate a need for cleaning, es-
pecially the exhaust / venting system.
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.
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
for more details.
- disconnect the power cord for a few
seconds and reconnect. If error still occurs call your
Dealer.
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 low end
of the scale.
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.
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.
Dealer Diagnostic Port
For dealer maintenance
only. Requires special DDM
monitor supplied to Harman
Dealers exclusively.
Feed adjuster
Sets the maximum feed rate
per each cycle of the control.
Igniter switch
Set to appropriate Start-
Up mode.
Test
Runs all motors at full
speed for one minute
to check operation.
Afterwards, the stove will
be at minimum draft and
will remain there as long
as you are still in "Test
Mode".
Indicates power to the
igniter
Indicates power to the
feed motor.
Indicates power to
combustion blower
Indicates power to
distribution blower.
17
XXV Pellet Stove
These units are pre-tested at the factory with exactly
120 Volts A.C., 60 Hz. They are checked and adjusted
for rebox tightness, gasket leakage, motor operation
and igniter operation. The XXV is then factory set at a
mid-point adjustment and in most cases will not need any
adjustments.
The control board on the XXV is equipped with a low
draft adjustment port. Located on the control face just
to the left of the igniter light. 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.
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 10 volts. This
adjustment should be done by the installer during set
up because a draft meter reading is to insure
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 feed motor or the
igniter to operate.
A simple draft test should be performed after
completing the ue pipe installation. To record the results
for future reference:
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.29
1. Plug unit into a 120VAC, 60 HZ outlet.
2. Close the hopper lid, front view door, and the ash pan.
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 -.50
to -.60) 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 -.35 and -.45, 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.
Draft Meter bolt hole location
is just behind the left front
leg, near the top of the ash
pan area.
Draft Meter
Fig.30
18 XXV Pellet Stove
This setting, see above,
will produce a room temperature of 70 degrees with the
distribution blower at medium speed.
The XXV is a fully automatic stove that features two
operating modes; and
. In Stove Temperature Mode, you
select a burn rate and the stove will remain at the same
burn rate regardless of the room temperature.
In the Room Temperature Mode the stove constantly
monitors the temperature in the room and adjusts the size
of the re and the heat output of the stove so that the room
is kept at a constant temperature. Room Temperature
Mode, in the AUTO position, has the added advantage of
turning the stove off if no heat is required and turning the
stove on again when the room temperature drops below
your desired room temperature set point.
Most consumers use the stove in the Room Temperature
Mode because it is the easiest and most efcient method
of keeping the room at a given temperature. In the Room
Temperature Mode, the Room Sensing Probe constantly
monitors room temperature. As the weather changes
outside and your home needs varying amounts of heat to
be at a desired temperature, the stove will automatically
adjust size and heat output of the re so that a constant
even temperature is maintained. If the weather warms up
and no heat is required the stove will gradually shut down.
When the house cools down, the stove will automatically
bring the room temperature to your desired setting
In the Room Temperature Mode you can select either
for the using the igniter
toggle switch. When the toggle switch is in the Auto
position the igniter, located inside the burn pot, is ready
to automatically light the re when required. When the
toggle switch is set to the Manual position, the stove can
be lit manually with either a gel or a wax type re starter.
(see lighting instructions on page 20.) With the igniter
toggle switch set in the Manual position the stove will
automatically adjust the heat output, but the stove will not
automatically shut down if no heat is required. Instead it
will go to its lowest setting and remain there. The Manual
position on the igniter toggle switch lets you light the stove
manually, should the igniter fail for any reason. Secondly,
if you are using the Harman battery back up system the
Manual setting will prevent the stove from turning off and on
during a power failure, which will drain the back up battery,
and possibly cause damage to the back-up or the stove.
In the Room Temperature Mode, the distribution blower
speed can be increased or decreased by adjusting the
Room Temp/Off/Stove Temp dial between L and H. As
output of the stove increases, the speed of the blower
will increase automatically to ensure that more heat is
transferred out into the room. The distribution blower will
shut off as the room reaches the set temperature, this will
prevent overheating of the room.
Fig. 20
19
XXV Pellet Stove
In the Stove Temperature Mode and with the igniter
toggle switch in the Auto position, the stove will light
automatically and can be adjusted to the desired setting
using the same temperature control dial as is used in
the Room Temperature Mode. The heat output and fuel
consumption will remain constant regardless of room
temperature. The settings from 1 to 7 on the inner ring
of the dial provide for relative heat output settings with
1 being low and 7 being the maximum.
In Stove Temperature Mode, the stove will not
automatically shut off unless the stove runs out of fuel
or is turned off.
Never disconnect the power cord to shut down the
stove. This will stop the combustion blower and smoke
will escape through window and door gaskets.
This knob controls the maximum amount of time per
cycle that the feed motor is allowed to run. Based on the
control settings and temperature demand, the control
will make it's own determination of how long to run the
feed motor, the maximum allowed by the Feed
Adjuster knob setting. For most premium grade pellet
fuels, the feed adjuster should be set at #4. If high-ash
fuel is used, the setting may need to be adjusted to #5
or 6. Higher settings are also needed if you want to
achieve the maximum capacity of the stove. Just be
sure that when burning at maximum, Stove temperature
mode with the feed adjuster on #6 and the temperature
knob on "7" or "90°", the pellets are not falling off of the
front of the burn pot before they have a chance to burn
completely. You should try to keep about one inch of
ash in front of the burning pellets.
The best way to shut down the stove is to simply let it
run out of pellets, the stove will shut down automatically.
Alternatively, you can turn the Mode Selector to “off”.
This will cause the re to gradually die down and go out.
The re will not go out immediately and may take more
than an hour to fully shut down.
If the stove is left to run out of fuel, you may get a 6
blink status light. If this happens simply reset the control
board by turning the mode selector to OFF and back ON.
This setting, see above, will produce continuous maximum
heat output with the distribution blower at full speed.
This setting, see above, will produce continuous medium
heat output with the distribution blower at low speed.
Fig. 21
20 XXV Pellet Stove
Make sure the unit is plugged into a 120 VAC, 60
HZ electrical source. The power light should be the
only light lit.
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 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.
You can push these nes into the feeder opening and then ll the
hopper with pellets. As the system works, they will be burned. Or
you can clean them out before lling the hopper.
2. The "TEST" cycle will operate the feeder motor for exactly one
minute. Turning to "TEST" again and again may purge 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. 22. 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 off the front of the
burn pot into the ash pan. Then, scrape the top surface of the burn
pot downward into the base of the burn pot. When the stove is ignited
these scrapings will be pushed out by the feeder and burned.
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. 23. 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. 22
See Hint #7.
Fig. 23
1"
Flame Guide
Other manuals for XXV
8
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