Harman Stove Company PF 100 User Manual
Installation & Operating Manual
The Harman PF 100 Pellet Pro Furnace
“Ce manuel est disponible en Français sur demande”
R7
SAFETY NOTICE
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.
FOR USE IN THE U.S. AND CANADA. SUITABLE FOR INSTALLATION IN MOBILE HOMES
IF THIS HARMAN PELLET FURNACE IS NOT PROPERLY INSTALLED, A HOUSE FIRE MAY RESULT. FOR YOUR
SAFETY, FOLLOW INSTALLATION DIRECTIONS.
CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
CONTACT YOUR LOCAL AUTHORITY (SUCH AS MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE
PREVENTION BUREAU, ETC.) TO DETERMINE THE NEED FOR A PERMIT.
CETTE GUIDE D'UTILISATION EST DISPONIBLE EN FRANCAIS. CHEZ VOTRE CONCESSIONNAIRE DE HARMAN STOVE
COMPANY.
SAVE THESE INSTRUCTIONS.
R4
Vent Pipe
PF100 Parts
Fan Control
Hopper Lid
Latches
Combustion
Blower cover
Combustion
Blower
3 Speed Switch
Hopper
Heat Exchanger
Shaker Handle
Control Cover
Outer Door Latches
Outer Door
2
Viewing Glass
Filter Box
PF100
Table of Contents
Assembly 4
Venting 10
Installation 15
Operation 21
Maintenance 29
Troubleshooting 34
Feeder Parts 3 5
Specifications 36
Wiring Diagram 37
Parts List & Options 38
Warranty 39
Testing Label 40
Quick Reference Start-Up 41
Please read this entire manual before you install and use your new
furnace. Failure to follow instructions may result in
property damage, bodily injury, or even death.
DO NOT INSTALL IN A MOBILE HOME.
SAVE THESE INSTRUCTIONS
Harman Stove Company
352 Mountain House Road
Halifax, PA 17032
3PF100
Fig. 1
Fig. 2
Assembly
Design
The first thing that needs to be done is deciding
where and how the furnace will be installed.
Things that need to be taken into consideration are
VENTING, SUPPLY& RETURN DUCTING, ELECTRICAL, and Condensation drainage (if A/C is in-
stalled). Don’t forget access to the furnace for service.
When the return air inlet position is known the filter
box and distribution blower can be installed. See pages
5, 6, 7, 8.
When the furnace is set into place venting can be
done.
Venting
Use 4” pellet vent pipe to vent your PF 100.
A combustion blower is used to extract the combustion gases from the firebox. This creates a negative
pressure in the firebox and a positive pressure in the
venting system as shown in fig. 2. 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 30 feet or
less of vent pipe. The maximum horizontal run should
not exceed 18 feet.
Be sure to use wall and ceiling pass through
fittings (which are approved for pellet vent pipe )
when going through combustible materials. Be sure
to use a starting collar to attach the venting system to the
stove. The starting collar must be sealed to the
stove flue collar with high temp silicone caulking
or aluminum tape, and screwed into the stove flue
collar at least three (3) places.
Clearances and Venting
See NOTES:
on page 12
4
PF100
The shaded areas are the clearances for the PL vent pipe that must
be maintained at 3”. After the venting leaves the shaded area it may be
installed at 2” to com bu stible s.
(Only UL listed wall pass-throughs
and fire stops must be used.)
Vent Pipe
4” pellet venting pipe ( also known as PL vent ) is
constructed of two layers with air space between the
layers. This air space acts as an insulator and reduces
the outside surface temperature to allow a clearance to
combustibles of only 2 inches. This 2 inch clearance is
also approved by the pipe manufacturers. See images
on left. See page 14 (Fig. 24 and 26) for larger images.
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 PF100 operates with a positive vent pressure,
we specify that all joints within the structure should
also be sealed with clear silicone.
NOTE:Use only 4” diameter type “L” or “PL”
venting system. Be sure to inspect and clean
exhaust venting system frequently.
Blower access
Panel Cover
Assembly
Filter Box
(Cold Air Return)
Top (same as bottom)
Solid Side Panel
Switch
Blower access Panel
Filter Frame Panel
NOTE:Read and follow all of the vent pipe
manufacturers’ instructions on the proper
installation and support of the vent pipe. Adhere to
all clearances.
Tek screw from outside
Solid Side Panel
Bottom
Bottom (same as
top)
Fig. 3
Assembling Filter Box
The cold air return filter box can be assembled
with the filter frame on either side or the back, provided there is access to the combustion blower and flue
area.
It is not recomended that the filter frame be installed
on the same side as the ash door due to the need to
access the combustion blower, filter, and flue pipe for
service.
This Edge Toward
Furnace
Knockouts
Fig. 4
1. Place the bottom on the floor. The edge closest
to the knockouts will be the edge towards the furnace.
See Fig. 4.
2. Place the desired vertical panel inside the bottom tray and hold into place with one Tek screw in the
bottom middle hole. (solid panel shown) See Fig 4.
5PF100
Assembly
Filter opening must be up
Filter Frame Panel
Fig. 5
Assembling Filter Box, Cont’d
3. Place the filter frame panel inside the bottom
and inside the solid panel corner. See Fig. 6 for corner
detail. Make sure that the filter opening is up.See Fig. 5
Hold the filter panel to the solid panel with a Tek screw
in the middle hole of the solid panel, and one in the bottom middle hole under the filter opening.
NOTE: Do not put any screws into any of the top
holes at this time.
Open Side Panel
6
PF100
Fig. 6
4. Place the remaining panel, (in this case the
blower access panel) in the bottom panel and into the
corner of the solid panel. See Fig. 7. Make sure that the
panel is in the upright position. There are no cover mounting holes in the bottom edge of this panel. Hold the panel
into place with one Tek screw in the middle hole of the
solid panel and one in the bottom middle hole of the
blower access panel.
Fig. 7
Top
Assembly
Assembling Filter Box, Cont’d
5. Place the top on the filter box as shown in figure 8. At
this time all Tek screws can be inserted around the filter
box.
Note: Except for the (6) screws that attach the
blower access panel in place. There should not be any
screws protruding from the box on the side toward the
furnace. Also DO NOT put a screw into the top center
of the filter panel as a screw in this location will interfere
with the filter access cover.
6. Pry out the two knockouts in the top of the box
and install the flex connector and the switch. See Fig. 9.
3 Speed Switch
Access Panel
Cover opening
Yellow on 2000 CFM motor
Flex connector
Fig. 8
Fig. 9
Note: Don’t forget the HI-MED-LO switch label
on the switch before the locknut.Make sure that the setscrew on the flex connector is not pointing toward the
furnace end of the box when the locknut is fully
tightened.The filter box is now ready to install onto the
furnace.
Follow the Blower mounting instructions on page
8 before continuing to step #7.
Note: The blower should be mounted on the furnace before the filter box for ease of distribution blower
installation.
Note: It is best to wait until the blower , filter box,
and cold air return duct work is installed before installing the filter and side panel.
7. After the Filter Box is installed on the furnace
the electrical wiring to the three speed switch needs to
be completed. WHITE to WHITE, VIOLET to the
center terminal of the switch, and the BLACK, RED,
BLUE to the terminals shown.
Note: The optional 1500 CFM blower is a single
speed blower, therefore the three speed switch will not
be used. The optional 2000CFM blower is a 4 speed,
only hook up the three colors shown and tape off the
orange wire. See Fig. 10.
Violet 120VAC
Fig. 10
8. Install the access panel cover by hooking the lip
at the bottom of the cover over the edge in the filter box.
Use 6 Tek screws to secure the access panel.
9. To install the filter, insert the filter into the filter
slot and slide completely into the frame. Take note to
the air flow arrow on the filter when installing.Slide the
filter access cover over the opening with the upright angle
toward the filter box. If a Tek was put into the middle
hole by mistake, remove the screw to allow the access
cover to fit properly.
7PF100
Mounting Screws
Assembly
Blower Assembly
Install the blower mounting brackets on the blower
as shown in Fig. 11.
1. Install ( 4) Tek screws on each side where shown
in Fig. 11. Start with the two center screws.
NOTE: There are two small holes in the discharge
end of the blower that match the two center holes on the
small angle of the blower bracket. The two (2) outer
holes are drilled by theTek screws.
Fig. 11
2. Mount blower with brackets installed on the
furnace as shown in Fig. 12. Each side will require 6
Tek screws.
NOTE: The furnace blower opening is made large
enough for the use of a 1500 or 2000 CFM blower.
The blower mounting brackets will fit either blower. The
inner hole pattern is for the 1000 CFM blower and the
outer pattern is for the 1500 or 2000 CFM blower.
8
PF100
Fig. 12
Fig. 13
Fig. 14
NOTE: These Blower Motors are not designed to
be operated without any positive static back
pressure. OPERATION WITHOUT SUPPLY
DUCTWORK OR IN FREE AIR WILL CAUSE
MOTOR OVERLOAD AND PREMATURE
FAILURE.
CAUTION: Regardless of the supply air duct size
installed, the Distribution Blower Motor MUST be
checked for running Amperage. Check the motor name
plate for the full load AMPS. If the amperage is running
higher than that listed, a supply air restricting damper
may be required to increase the supply plenum positive
static pressure.
3. Mount the filter box on the furnace with ( 8 )
10 x 3/4 Tek screws, 3 on each side. Visually locate
these holes so you are familiar with their location on the
filter box and the furnace. Access to the mounting holes
can be gained through the blower access panel cover
and the filter opening. See Fig. 14.
Note: Two pieces of 2x4 stacked laying flat on
the floor 12 inches from the blower opening will support
the filter box during installation.
Assembly
Firebrick
Fig. 15
Firebrick installation-required
The firebrick is shipped in the ashpan. It will need
to be placed on the brick shelf as shown in Fig. 15. It
can be installed with either face to the fire. Hold the
brick longways and slide it down into the slot on the
shelf. There is a stop at the rear of the shelf to stop the
rearward travel.The brick just sits on the shelf in the
upright position.
Baffle installation
The upper heat exchanger baffle comes shipped
along side the ashpan. Remove the ashpan and the baffle.
This upper baffle needs to be installed before operating
the furnace.
Fig. 16
Baffle support bracket
Upper heat
exchanger baffle
45o bend
The baffle has a long 45 degree bend on the bottom of the firebox side. See Fig. 17.
The top has a 90 degree bend on the same side to
use as a handle.
On the opposite side there are four hooks that will
support the baffle.
On the front and rear of the firebox walls there are
brackets that these hooks fit into. See Fig. 16
Slide the upper baffle down on to the brackets,
while you hold the baffle against the heat exchanger. You
will notice that the upper baffle will hold the lower baffle
plate into position. See Fig.17.
Note how the upper and lower baffles are held
into position because they will need to be removed
during heat exchanger cleaning.
Fig. 17
9PF100
Venting
Venting
NOTE: Use only 4” diameter type “L” or “PL”
venting system. Be sure to inspect and clean
exhaust venting system frequently.
4” Type “L” or
“PL” Vent pipe
Fig. 18
This is the minimum venting configuration.
NOT E : T his would only b e a llowed with non-
combustible walls.
The minimum vent configuration is a 90o or Tee on
a starter collar and a 24” length horizontal through an
exterior wall. A cap or other bird screen on the end
should direct the flue gasses down and away from the
structure. See Fig. 18.
The maximum horizontal length is 18 feet. The mini-
mum termination height above the exterior grade is 18”.
The maximum total length of any configuration is 30 feet*.
* ( see venting graph on page 13 for exceptions )
NOTE: Cleanout Tee’s should always be used on
the transitions to horizontal pipe to allow easy access
for cleaning.
The venting gragh allows for (one) 90 deg. or Tee
fitting in any configuration.
If more 90’s, T’s, or 45’s are needed the total length
must be adjusted to allow for the added restriction.
Up to four (4) additional 90’s, Tee’s, or equivalent
45’s can be added as long as the overall length is ad-
justed in accordance with the values listed below.
( See the venting graph on page 12.)
Each Vertical ---- 90 deg. or T subtract 2.5 feet
Each Vertical ---- 45 deg. subtract 1.5 feet
Each Horizontal - 90 deg. or T subtract 5.0 feet
Each Horizontal - 45 deg. subtract 2.5 feet
Any exterior venting (vent pipe exposed to outside ambiant temperatures) should be kept to a
minimum, due to potential condensation problems.
This is especially important in high humidity cold
weather climates, such as maritime areas, lake shores,
and low river valleys.
INSTALLATION IS TO BE PERFORMED BY A
QUALIFIED INSTALLER.
DO NOT INSTALL A FLUE DAMPER IN THE
EXHAUST VENTING SYSTEM OF THIS UNIT.
DO NOT CONN ECT THIS UNIT TO A
CHIM NEY FLUE S ERVING ANOTHER
APPLIANCE.
INSTALL VENT WALL PASS-THROUGHS AT
CLEARANCES SPECIFIED BY THE VENT
MANUFACTURER
NOTE: All installation clearnaces and restrictions
must be adhered to.
NOTE: Read and follow all of the vent pipe
manufacturers’ instructions on the proper
installation and support of the vent pipe. Adhere to
all clearances.
WARNING
Keep combustible materials such as grass, leaves, etc.
at least 3 feet away from the point directly under the
vent termination. (between the vent and the ground)
WARNING
DO NOT INSTALL IN SLEEPING ROOM
CAUTION
KEEP COMBUSTIBLES AWAY
FROM FLUE OUTLET.
10
PF100
Venting
Fig. 19
Venting Configuration Graph
11PF100
Venting
Requirements for Terminating the Venting
WARNING: Venting terminals must not be recessed
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 effect
the prevailing wind direction or other wind currents will
cause with flyash and /or smoke when placing the termination.
In addition, the following must be observed:
A. The clearance above grade must be a minimum
of 18".
1
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/
1
door.
( with outside air installed, 18” )
C. A 12" clearance to a permanently closed window is recommended to prevent condensation on the
window.
D. The vertical clearance to a ventilated soffit 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 soffit 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.
1
I. The clearance to service regulator vent outlet
must be a minimum of 6 feet.
1
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”.
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.
M. The clearance under a veranda, porch, deck
or balcony must be a minimum of 12 inches.
1,2
1,3
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.
1
Certain Canadian and or Local codes or regula-
tions may require different clearances.
2
A vent shall not terminate directly above a sidewalk or paved driveway which is located between two
single family dwellings and serves both dwellings.
3
Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of 2 sides beneath the
floor.
NOTE: Where passage through a wall, or partition
of combustible construction is desired, the
installation shall conform to CAN/CSA-B365. (if in
Canada)
12
V
PF100
= Vent terminal
Fixed
Closed
Openable
A
Openable
= Air supply inlet
Fixed
Closed
Inside
Corner
Detail
= Area where terminal is not permitted
Fig. 20
Venting and Clearances
Floor Protector
PF100
Skidplate
Footprint
52” long
18”
48” wide
”
Fig.21
Clearances to combustibles
If installing the furnace in a room separated from the
remaining living spaces, the minimum size of the room must
be no smaller than 8’ x 8’. See Fig. 21. The reason for this
is heat build-up and required space for service and normal
operation.
This is the minimum size of the room even if it is built
of non-combustible material.
High and low air vents MUST be installed between
the room and the remaining living space. Each vent should
be at least 72 square inches in area. ( The vent size will
need to be increased if there is no return air ducting system.)
The striped areas are the minimum clearances to com-
bustibles which is 36” from stove body, not hopper or
blower.
The shaded area indicates the required floor protec-
tion area. The PF100 requires 48” x 52” of floor protec-
tion centered around the skidplate footprint. Flooring should
be a minimum of 26 gauge sheet metal covering the instal-
lation clearance area and 18” in front of, and 8” to either
side of the ash pan door.
The 18” clearance on the hopper end is a manufactur-
ers recommendation for adding pellets and or servicing the
feeder mechanism.
The minimum clearance to the top of the plenum is 4”.
Note the minimum height to the bottom of the supply
duct if it crosses the hopper.
The minimum duct configuration to a living space above
the furnace is as shown in below. An offset of at least 24”
MUST be installed between the plenum and the floor register. The register size MUST have an area of at least 240
square inches.
The minimum ceiling height is 6’6”. This is set by the
clearance to combustibles ( 28” ) from the top of the
of the furnace. See Fig. 22.
NOTE: Install vent at clearances
specified by the vent manufacturer.
Fig. 22
CAUTION: When installing a floor
register, the temperature of the
discharge air MUST be taken into
consideration (The discharge air
temperature may be high enough to
cause burns if not properly operated
and maintained.)
CAUTION: The Blower Motor full
load AMPS MUST be checked.A
plenum damper may be required to
adjust the motor full load AMPS to the
motor nameplate rating.
13PF100
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