Harman Stove Company PP38+ Installation instructions

SAFETY NOTICE
PLEASEREAD THIS ENTIRE MANUALBEFORE YOUINSTALL ANDUSE YOURNEW ROOMHEATER. 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 HARMAN PELLET STOVE IS NOT PROPERLYINSTALLED,AHOUSEFIREMAYRESULT. FORYOUR SAFETY,
FOLLOWINSTALLATIONDIRECTIONS.
CONTACT LOCALBUILDING OR FIRE OFFICIALSABOUT RESTRICTIONSANDINSTALLATIONINSPECTION
REQUIREMENTS INYOUR AREA.
CONTACT YOUR LOCAL AUTHORITY(SUCHAS MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE
PREVENTION BUREAU,ETC.) TODETERMINE THENEED FORAPERMIT.
CETTEGUIDE D'UTILISATIONEST DISPONIBLEENFRANCAIS.CHEZVOTRECONCESSIONNAIRE DEHARMANSTOVE
COMPANY.
SAVETHESEINSTRUCTIONS.
The Harman PP38+ Pellet Stove
Installation & Operating Manual
R8
“Ce manuel est disponible en Français sur demande”
Tested byIntertek Testing Service
Tested to: UL 1482,ASTM E1509-95,
Oregon 814-23-900THRU814-23-909,
ULC-S627-M90, WH-PN 025

P38+ Pellet Stove
3
Please read this entire manual before you install and use your new
room heater. Failure to follow instructions may result in
property damage, bodily injury, or even death.
SUITABLE FOR MOBILE HOME INSTALLATIONS.
SAVE THESE INSTRUCTIONS
Harman Stove Company
352 Mountain House Road
Halifax, PA 17032
Assembly & Installation 4
Venting 8
Turbo Control 12
Operation 13
Maintenance 14
Trouble Shooting 16
Feeder Parts 17
Specifications 17
Wiring Diagram 18
Options 19
Warranty 22
Contents

P38+ Pellet Stove
4
Assembly and Installation
Rear Cover
Panels
Unpacking
Cut straps holding box together and remove box from
skid.
The 38+ is bolted to the skid to prevent movement dur-
ing shipping.
To free the stove from the skid you must remove the
hold-down bolts in the rear of the pedestal base.
Installing Rear Cover Panels
The rear cover panels are removed from the stove to
make it easier to get at the hold-down bolts.
The rear cover panels are packed inside the hopper
and should be installed on the stove as shown. This should be
done after the stove is in place and flue is connected.
Firebrick
Install the firebrick horizontally on the angle above the
burnpot.
Flame Guide
Install the cast iron flame guide on top of the burnpot
and make sure it is fully seated against the auger opening.
The bottom of the flame guide is marked 38+.

P38+ Pellet Stove
5
4 GLASS
RETAINER
CLIPS 4 GLASS
RETAINER
BOLTS
GLASS
GLASS GASKET
DOOR
HINGE PINS
PAW BOLT
BRASS HANDLE
HANDLE
BOLT
WOOD HANDLE
SET SCREW
Door Glass
* Rope the glass carefully to insure proper sealing.
* Apply the rope exactly along the edge of the external face of
the glass, not overhanging or pressed too far in from the edge.
* Make sharp 90o turns at the corners.
* Overlap the ends of the rope at the upper left or right corners.
Glass Retainer Clips
* Use the glass retainer clips and screws supplied in the door
kit.
* Use a 1/8" Allen wrench to tighten the glass clips to cast door
with 10-24 x 3/8" screws supplied.
Paw Bolt
* The paw bolt should be turned into the door from the inside
approximately 17 turns.
* With the set screw removed, turn the brass elbow onto the
paw bolt approximately 5 turns, or until a 1/16" clearance is
achieved between the elbow and the door face (make sure to
stop on the flat spot of the paw bolt).
* The set screw on the brass elbow must be aligned to contact
the flat spot on the paw bolt, then tighten using a 5/32" Allen
wrench.
* After attaching the door handle, close and latch the door by
turning the handle to the six o'clock position. During this
process observe to see that the door rope is being compressed
properly.
* If it does not compress, loosen the set screw and turn the
paw bolt one additional turn into the door. Repeat as required
to insure a tight seal.
Assembling the door
Referring to the diagram, note how the various compo-
nents of the door system fit together. Lay the load door face
down on a soft surface.
Clean the glass and gold door using a nonabrasive
cleaner. Install the glass gasket around the outer edge of the
front face of the door glass carefully to insure proper sealing.
Set the glass pane gently onto the door. Install the hold-down
clips and tighten with bolts as shown.
Install door on stove with hinge pins.
Install door handle as shown on the diagram. NOTE:
With the flat surface of the paw bolt to the inside of the door.
Turn the paw bolt "in" for approx. (17) turns.
Turn the brass elbow onto the paw bolt approx. (5) turns.
Align the set screw with the flat spot on the paw and
tighten.
After attaching the door handle, close and latch the door
by turning the handle to the six o'clock position. Does the door
rope compress? If not, loosen the set screw, turn the paw bolt
one more turn into the door. Repeat as required to achieve a
tight door fit.
NOTE: Remember to thoroughly clean the glass and
the gold door frame before lighting the stove for the first time.
Door Assembly/Installation Tips

P38+ Pellet Stove
6
CAUTION
Place the stove on a noncombustible floor protector that
extends 6 inches to the front, 6 inches to the sides and 1 inch
to the rear of the stove. The minimum floor protector material
is 24 gauge sheet metal.
Place the stove away from combustible walls at least as
far as shown in figures 3,4 and 5. Please note the difference in
side wall clearance with and without side shields.
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 recommened to protect the
circuit board).
Prior to installing flue pipe, connect a draft meter to the
stove as shown in fig. 6 . (The draft meter must have a mini-
mum range of 0-.5). Set control board to "1" on the feed rate
dial. Record draft reading here _______ (should read at least
.15" cold. Allow combustion blower to operate for approxi-
mately 1 minute before recording or adjusting low draft.). See
page 19 for low draft adjustment procedures.
After connecting the flue system, follow the above pro-
cedure. However, prior to taking the draft reading be sure all
doors and windows in the home are closed. Record the draft
reading_______. If this reading is more than .05" lower than
the unconnected reading, check for possible restrictions or
the need for outside air (see page 7).
Mobile Home Installation
When installing this unit in a mobile home several require-
ments must be followed:
1. The unit must be bolted to the floor. This can be done
with 1/4" lag screws through the 2 holes in the base plate.
2. The unit must also be connected for the outside air. See
page 8.
3. Floor protection and clearances must be followed as
shown.
4. Unit must be grounded to the metal frame of the mobile
home.
CAUTION: This appliance must be vented to the outside.
The stove is hot while in operation.
Keep children, clothing and
furniture away. Contact may cause
skin burns.
6"
Fig. 4
10"
2"
1"
6"
WithSideShields
FLOOR PROTECTOR
6"
Fig. 5
16"
WithoutSideShields
FLOOR PROTECTOR
2"
2"
FLOOR PROTECTOR
Fig. 3
Fig. 6
Installation
Mobile home installation should be done in accordance
with the Manufactured Home and Safety Standard (HUD),
CFR 3280, Part 24.

P38+ Pellet Stove
7
Venting
Requirements for Terminating the Venting
WARNING: Venting terminals must not be re-
cessed into a wall or siding.
NOTE: Only PL vent pipe wall pass-throughs
and fire stops should be used when venting through
combustible materials.
NOTE: Always take into consideration the ef-
fect the prevailing wind direction or other wind cur-
rents willcausewithflyashand/orsmoke whenplac-
ing the termination.
Inaddition,thefollowing mustbe observed:
A. The clearance above grade must be a mini-
mum of 18".1
B. The clearance to a windowor door that may
be opened must be a minimum of 48" to the side
and 48" below the window/door, and 18" above the
window/door.1
(above window/door with outside air installed, 9”)
C.A12"clearance toapermanentlyclosedwin-
dow is recommended to prevent condensation on
the window.
D. The vertical clearance to a ventilated soffit
located above the terminal within a horizontal dis-
tance of 2 feet (60 cm) from the center-line of the
terminal must be a minimum of 18".
E.The clearance to anunventilatedsoffit 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. Aventmust notbe installedwithin3 feet (90
cm) above a meter/regulator assembly when mea-
sured from the horizontal center-line of the regula-
tor.1
I.The clearance toservice regulator vent outlet
must be a minimum of 6 feet.1
J. The clearance to a non-mechanical air sup-
ply inlet to the building or the combustion air inlet to
any other appliance must be a minimum of 48”.
1
K. The clearance to a mechanical air supply
inlet must be a minimum of 10 feet.1
(with outside air installed,6 feet)
L. The clearance above a paved sidewalk or a
paved driveway located on public property must be
a minimum of 7 feet.1,2
M.The clearanceunderaveranda, porch,deck
or balcony must be a minimum of 12 inches.1,3
NOTE: The clearance to vegetation and other
exterior combustibles such as mulch is 36” as mea-
sured from the center of the outlet or cap. This 36”
radius continues to grade or a minimum of 7 feet
below the outlet.
1CertainCanadianandor Localcodes or regu-
lations may require different clearances.
2Avent shallnotterminatedirectlyabovea side-
walk or paved driveway which is located between
two single family dwellings and serves both dwell-
ings.3Only permitted if veranda, porch, deck, or bal-
cony is fully open on a minimumof 2 sides beneath
the floor.
NOTE: Where passage through a wall, or
partition ofcombustibleconstruction isdesired,
the installation shall conformto CAN/CSA-B365.
(ifin Canada)
VA
= Vent terminal = Air supply inlet
Fixed
Closed
Openable
Openable Fixed
Closed
Inside Corner
Detail
= Area where terminal is not permitted

P38+ Pellet Stove
8
3'
Venting
KEEP COMBUSTIBLE MATERIALS SUCH AS GRASS,
LEAVES, ETC. AT LEAST 3 FEET AWAY FROM THE
POINT DIRECTLY UNDER THE VENT TERMINATION.
WARNING
CAUTION
THE STRUCTURAL INTEGRITY OF THE MOBILE
HOME FLOOR, WALL, AND CEILING/ROOF MUST BE
MAINTAINED.
DO NOT INSTALL IN SLEEPING ROOM
WARNING IMPORTANT NOTICES
• Due to high temperatures, the 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 unit.
• Installation and repair of this Harman Stove should be
done by a qualified service person. The appliance should
be inspected before use and at least annually by a
qualified service person. More frequent cleaning will be
required. It is imperative that control compartments,
burners, and circulating air passageways of the stove be
kept clean.
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 APPLIANCE.
INSTALL VENT AT CLEARANCES SPECIFIED BY THE
MANUFACTURER.

P38+ Pellet Stove
9
+= Positive static pressure
= Negativestatic pressure
Fig. 7
Outside air flex pipe
goes here
Inlet Cover part#
1-10-08542
Flex pipe part#
2-00-08543
A combustion blower is used to extract the combustion
gases from the firebox. This causes a negative pressure in the
firebox and a positive pressure in the venting system as shown
in fig. 7. The longer the vent pipe and more elbows used in the
system, the greater the flow 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 diam-
eter should be increased from 3" to 4" because a larger pipe
causes less flow resistance. Be sure to use approved pellet
vent pipe and wall pass through fittings.
Vent Pipe
Pellet venting pipe ( also known as PL vent ) is con-
structed of two layers with air space between the layers. This
air space acts as an insulator and reduces the outside sur-
face 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 38+ oper-
ates with a positive vent pressure we specify that the joints
also be sealed with clear silicone.
Outside Air
Outside air is optional except in mobile homes and
where building codes require. The benefit of outside air is
increased efficiency and should be used in small, or very well
insulated homes.
To install outside air use 2 3/8" I.D. flex pipe part number
2-00-08543. There is a break-away hole on the rear panel
which must be removed before connecting the flex pipe. The
pipe should be run outside and terminate to the side or below
the vent pipe outlet so the flue 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 bird,
rodents etc. out of the pipe.
HRV
When installing in a house with a Heat Reclaiming Ven-
tilation System (HRV) be sure the system is balanced and is
not creating a negative pressure in the house.
Venting
IMPORTANT NOTICE
PelletVentPipe orPLVentPipe Must beused.

P38+ Pellet Stove
10
#1 Preferred method
This method provides excellent venting for normal op-
eration 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 five feet high. This vertical section
will provide natural draft in the event of a power failure.
Fig. 8
Fig. 9
3 ft.
tocombustibles
3 ft.
tocombustibles
KEEP COMBUSTIBLES (SUCH AS GRASS,
LEAVES, ETC.) AT LEAST 3 FEET AWAY FROM
THE FLUE OUTLET ON THE OUTSIDE OF THE
BUILDING.
CAUTION
#2 Preferred method
This method also provides excellent venting for normal
operation but requires the stove to be installed farther from the
wall. The vertical portion of the vent should be three to five 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.
Venting

P38+ Pellet Stove
11
#5 Installing into an existing fireplace
chimney ( US only )
This method provides excellent venting for normal op-
eration. 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. If the chimney condition is questionable you may
want to install a liner all the way to the top as in method #6.
Fig. 10
Fig. 11
#4 Installing into an existing chimney
( US only )
This method provides excellent venting for normal op-
eration. 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 #7.
Venting

P38+ Pellet Stove
12
#7 Installing into an existing chimney
( US and Canada )
This method provides excellent venting for normal op-
eration. This method also provides natural draft in the event of
a power failure.
In Canada and some places in the US 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.
In this method a cap should also be installed on the
chimney to keep out rain. One disadvantage of this method is
that it is harder to clean the vent pipe, therefore, there is a
tendancy not to do it as often as needed.
Fig. 12
Fig. 13
#6 Installing into an existing fireplace
chimney ( US and Canada )
This method provides excellent venting for normal op-
eration. This method also provides natural draft in the event of
a power failure.
In Canada and some places in the US 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 approved pellet vent
pipe fittings. Seal pipe joints with silicone in addition to the
sealing system used by the manufacturer. Pipe size should be
increased to 4" using this method.
Venting

P38+ Pellet Stove
13
Fig. 14
Turbo Control
When the Feed Rate is set to "1" and the
Blower isset to the lowest setting, only 75
watts ofelectricity are used.
Start
Position
Feed Rate
Turning the knob passed the "OFF" position starts the
combustion blower and makes the stove ready to light as shown
in fig 14. The distribution blower and feed motor will also run
for one minute or less just to let you know they are operational.
After lighting the fire, the ESP probe in the exhaust senses
when the temperature is high enough to start the feed motor
and distribution blower.
The feed motor will start and stop as needed to main-
tain a fire relative to the dial setting of the feed rate.
Turbo Range
Turning the feed rate knob into the Turbo Range causes
the feed rate to increase, providing extra heat not available in
the normal range. It also causes the distribution blower to go
to full speed. This is because you are asking for extra heat
output, therefore, full blower speed is required.
Blower Speed Adjustment
This knob adjusts the blower speed from "Low" to "Hi"
as desired. When the feed rate is turned into the Turbo Range,
the blower automatically goes to high to force maximum heat
into the room. The blower speed cannot be varied when in
Turbo Range.
When a thermostat is connected, the blower is con-
trolled by heating demands.
Thermostat ( optional )
When a thermostat is connected to the stove it controls
the heat output. When the thermostat calls for heat, the feed
rate and blower go to "max" just like in Turbo Range. When
the thermostat is satisfied, the feed rate and blower speed
drop to the level set on the dials.
OFF
When the Feed Rate dial is turned to the OFF position
the fire will slowly die and go out. When the stove cools down
enough, all motors will stop.
If the stove runs out of pellets and cools down, the
control will shut down all but the combustion blower.
The control must be turned to OFF to stop the combus-
tion blower. Whenever the stove runs out of pellets, the con-
trol must be turned to OFF and then back to the desired set-
ting to reset the control for start-up.
Test Mode
To use test mode, turn the feed rate to OFF and then to
Turbo. This will cause all the motors to run for one minute or
less in order to verify operation. If the test does not last long
enough, simply recycle test mode.

P38+ Pellet Stove
14
Fig. 15
Fig. 16
Never use gasoline, gasoline-type lantern fuel,
kerosene, charcoal lighter fluid, or similar liquids to
start or “freshen up” a fire in this heater. Keep all such
liquids well away from the heater while it is in use.
When filling hopper be sure toremove any
pellets from ledge and around hinges before
closinglid.
Placing too many pellets in
the burnpot may cause
the fire to be pushed off
the end.
Starting First Fire
Be sure the power cord is plugged into a 120 volt grounded
receptacle.
Fill the hopper with pellets.
Fill the burn pot with pellets to a level no more than
shown in Fig. 14.
Turn Feed Rate Dial to "1". NOTE: Every time the control
is turned from "OFF" to any other position on the dial the
stove goes through a self test for a minute or less during
which all motors will run. After this period, only the
combustion motor run. See Test Mode.
Apply starting gel to pellets in burn pot and light the gel
as shown in fig. 15. Close the door after lighting (A low
draft pressure switch will not allow the feed motor
to operate with the door open). As the temperature of
the fire increases, the feed motor will start and pellets will
feed into the burn pot. As the stove temperature in-
creases the distribution blower will start and run at the
speed set on the Blower Speed dial.
Normal Operation: After the fire is established turn the
feed rate to the desired setting from "1" to "5". The ESP
probe in the exhaust will sense the flue gas temperatures
and adjust the feed rate in order to maintain a stove
temperature relative to the setting on the dial. The blower
Speed may be adjusted by turning the blower to the
desired setting.
Turbo Operation: Turning the feed rate into the Turbo
range will provide approximately 5000 btu's more than in
Normal range.
Shut-Down Procedure
To kill the fire or stop burning the stove, turn the 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 in the firebox. 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 turn the control to "OFF".
Operation
1"

P38+ Pellet Stove
15
LatchHandles
AshPan
Handle
Combustion
Blower Cover
Scraper
Blower Cover
Latch
Blower Wheel
Flue Outlet
Heat Exchanger Fins
Fig. 18
Fig. 17
Removing Ashes
When approximatly 1 ton of pellets has been burned it
will be necessary to empty the ash pan.
Ashes should be placed in a metal container with
a tight fitting lid. The closed container of ashes should
be placed on a noncombustible floor or on the ground,
well away from all combustible materials, pending fi-
nal disposal. If ashes are disposed of by burial in soil
or otherwise locally dispersed, they should be re-
tained in the closed container until all cinders have
thoroughly cooled.
It is recommended that the stove is cold and shut down
when removing ash pan.
1. Pull on latch handles and remove ash pan as shown at
left. Use ash pan handle to carry and dispose of ashes.
2. Slide the ash pan back into the stove and latch by
pushing in on both latches simultaneously.
Cleaning
The stove will need to be cleaned for approximately
every 2 to 5 tons of pellets burned. The amount of pellets
burned before cleaning will vary depending on the brand of
pellets.
1. Shut down stove and disconnect power cord to insure
that all motors are stopped.
2. Open burn pot clean-out. Clean fly ash from burn pot and
replace cover.
3. Clean heat exchanger with scraper as shown in fig 27.
4. Brush or scrape the inside of the stove to remove fly ash.
5. Scrape burnpot with flat end of scraper provided with the
stove. Fig. 33.
6. Remove ash pan.
7. Remove combustion blower cover by turning the blower
cover latch vertical, see Fig.26. Sliding the cover out of
the slot on the left.This will expose the combustion blower
wheel and flue outlet, Fig.27.
Maintenance

P38+ Pellet Stove
16
8. Clean the blower wheel with a brush and a vacuum cleaner.
9. Use a brush to clean the flue, being careful not to damage
the ESP probe, see Fig. 30. The flue goes straight through
into the vent pipe (Fig.27) therefore, the vent pipe can also
be cleaned to some extent through the flue outlet.
10. Reinstall blower cover and relatch.
11.Slide ash pan into stove and latch into place.
Fig. 24
Soot and Fly Ash
The products of combustion will contain small par-
ticles of fly ash. The fly ash will collect in the ex-
haust venting system and restrict the flow of the
flue gases. Incomplete combustion, such as oc-
curs during startup, shutdown, or incorrect op-
eration of the room heater, will lead to some
soot formation which will collect in the exhaust
venting system. The exhaust venting system
should be inspected at least once every year
to determine if cleaning is necessary.
ESPProbe
Fig. 22
Be careful not to
damageESPprobe
when cleaning with
brush.
Fig. 23
Brush not
supplied. Can be
foundinhardware
stores.
Latch "closed "with
blower cover in place.
Burn pot clean-out is
closed.
Latch "open "with
blower cover partly
removed. Burn pot clean-
out is open.
Exposed blower wheel
and flue opening,
NOTE: ESPprobeis
visible.
Blower cover
removed.
ESP probe
Fig. 19 Fig. 20
Fig. 21
Maintenance

P38+ Pellet Stove
17
FEEDER DOES NOT FEED
1. No pellets in hopper.
2. 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.
3. Feed motor has failed.
4. Something is restricting flow in the hopper or
causing the slide plate to stick.
5. Firebox draft may be too low for low draft pres-
sure switch in feeder circuit to operate. Check for
closed doors, loose or missing gasket on doors
or hopper lid, faulty pressure switch.
PARTIALLY BURNED PELLETS
1. Feed rate too high.
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.
4. Combination of all the above.
SMOKE SMELL
Seal the vent pipe joints and connection to stove
with silicone.
FIRE HAS GONE OUT
1. No pellets in hopper.
2. Feed rate too low.
3. Something is restricting fuel flow.
4. Feed motor or draft motor has failed.
5. Power failure or blown fuse.
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
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.
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 residue. 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.
Removing Ashes
Turn the Feed Rate Dial to number 1 approximately
30 minutes before removing ashes. This will result in a
cooler stove and ash pan.
Maximum Turbo settings are not needed in most
cases. Operating in the normal range is recommended
when maximum heat output is not required. The ESP
probe prevents the stove from being over-fired.
Keep the stove free of dust and dirt.
Helpful Hints
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 38+ 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 lb. Normally, standard and high
ash pellets cost less than premium pellets and can be
cost effective when burned in the 38+.
The moisture content must not exceed 8%. Higher
moisture will rob BTU's and may not burn properly.
Trouble Shooting

P38+ Pellet Stove
18
Feeder Parts
Weight 212 lbs.
Blower 135 cfm
Feed Rate .75 to 5.5 lbs. per hr.
Hopper Capacity 50 lbs.
Fuel Wood Pellets
Flue Size 3 inch
Outside Air Size 2 3/8 I.D. inch
Fuse Rating 3 amp
29.375"
9"
22"
32"
5.250"
12.375"
Specifications
28.5"

P38+ Pellet Stove
19
Wiring Diagram
5

P38+ Pellet Stove
20
Thermostat Terminals
Trim Pot
Warning
Always disconnect power
before touching control board
What is a thermostat?
A thermostat is a switch that opens or closes at a
set room temperature. For example: When you set the
thermostat to 70 degrees, the switch will be closed caus-
ing the stove to burn on "Turbo" until the room tempera-
ture reaches 70 degrees. Then the switch will open, caus-
ing the stove to go to "low" which is where the feed rate
is set.
Installing Thermostat
The thermostat should be mounted in a central lo-
cation. Avoid isolated rooms with poor air circulation.
Run thermostat wire ( available at most hardware
stores) from the thermostat to the rear of the unit and up
to the thermostat terminals on the control board. discon-
nect power before accessing control board.The con-
trol board can be tilted out at the top to allow access to
the thermostat terminals on the control board. Use the
two female spade terminals (supplied) to make the con-
nection.
Low Draft Adjustment ( cold stove only )
This adjustment should only be made by an autho-
rized Harman dealer using a draft meter to check results.
The Low Draft Adjustment is set at the factory in the mini-
mum position. This setting should give the proper draft
with 118 V.A.C. 60 Hz or higher.
To check the low draft, turn the feed rate dial to "1"
and allow one minute before taking a draft reading. If the
draft is too low (below .15), Disconnect the power and
turn the trim pot on back of the control board clockwise
slightly to increase draft. Reconnect power and wait one
minute before rechecking draft. Repeat until .15 to .18
draft reading is reached.
Thermostat (optional)

P38+ Pellet Stove
21
Tabs
Tabs
Door Options
"Sunrise" Gold Trim
This kit includes a gold trim piece for the ash lip and a
gold Sunrise piece for the door.
Referring to the diagram, page 4, note how the various
components of the door system fit together. Lay the load door
face down on a soft surface.
Clean the glass thoroughly using a nonabrasive glass
cleaner. Install the glass gasket around the outer edge of the
front face of the door glass carefully to insure proper sealing.
Note: There are 4 tabs on the Sunrise. These tabs have
a step on the front side and are flush on the back side. Place
the "Sunrise" in the door so the step side is to the front.
Set the glass pane gently onto the door. Install the hold-
down clips and tighten with bolts as shown on page 5.
To install ash lip trim, simply slide the trim over the ash
lip and into the groove on the trim.
Gold Door
The gold door is assembled and installed the same as
the standard door. Refer to page 4. Be careful not to scratch
the glass and be sure to clean the gold before starting a fire in
the stove.
To install ash lip trim, simply slide the trim over the ash
lip and into the groove on the trim.
Cleaning Gold
The gold plated door and gold Sunrise should never be
buffed or polished.Abrasive clesners and metal polishes will
remove the plating and therefore should never be used. If the
gold needs to be cleaned, wait until the stove is completely
cool, then use a sponge, soap and water to gently remove dirt
and stains. Before relighting the stove, remove all soap resi-
due and wipe dry.