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Harman®  •  PF-120 Owner’s Manual_R3  •  2014 -___  •  10/14

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3-90-08120c

Reference Material 

 

THE FURNACE IS HOT wHILE IN OPERATION.
KEEP CHILDREN, CLOTHING AND FURNITURE 

AwAY. CONTACT MAY CAUSE SKIN BURNS.

KEEP COMBUSTIBLE MATERIALS SUCH AS 

GRASS, LEAVES, ETC. AT LEAST 3 FEET AwAY 

FROM THE POINT DIRECTLY UNDER THE VENT 

TERMINATION.

A. Safety Reminders

When  operating  your  Harman®  PF-120  Pellet  Furnace, 

respect  basic  safety  standards.  Read  these  instructions 

carefully before you attempt to operate the PF-120 Pellet 

Furnace. Failure to do so may result in damage to property 

or personal injury and may void the product warranty.

CAUTION: This appliance must be vented to the outside.

Due to high temperatures, this furnace 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 furnace.
Clothing and other flammable materials should not be placed 

on or near this furnace.
Installation and repair of this furnace 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 this furnace be kept clean.

Disposal of ashes

: Ashes  should  be  placed  in  a  steel 

container  with  a  tight-fitting  lid  and  moved  outdoor 

immediately. The closed container of ashes should be placed 

on a noncombustible floor or on the ground, well away from 

all combustible materials, pending final disposal. If the ashes 

are disposed of by burial in soil or otherwise locally dispersed, 

they should be retained in the closed container until all cinders 

have thoroughly cooled. Other waste shall not be placed in 

this container.

Soot and fly ash: 

Formation  and  need  for  removal. The 

products  of  combustion  contain  small  particles  of  fly  ash. 

The fly ash will collect in the exhaust venting system and will 

restrict the flow of the flue gases. Pellet fuels have different 

ash contents depending on what type of wood has been used 

to make the pellets. 

we recommend to clean the system 

after approximately 1 ton of pellets have been burned 

and judge from that how often the furnace should be 

cleaned, remember if you change pellets it may change 

how often you have to clean your furnace. 

When burning wood slowly, the potential exists for creosote 

to form. The venting system should be inspected periodically 

throughout the heating season to determine if a creosote 

buildup  has  occurred.  If  a  significant  layer  of  creosote 

has accumulated (3mm or more), it should be removed to 

reduce the risk of a chimney fire. If a fire occurs, call the 

fire department, shut down the furnace, and evacuate the 

residence.  Before  using  the  appliance,  have  the  venting 

system  thoroughly  inspected  and  replace  any  damaged 

components.

THE STRUCTURAL INTEGRITY OF THE MOBILE 

HOME FLOOR, wALL, AND CEILING/ROOF MUST 

BE MAINTAINED.

MOBILE/MANUFACTURED HOME GUIDELINES 

DO NOT ALLOw INSTALLATION IN A SLEEPING 

ROOM.

USE OF IMPROPER FUELS, FIRE STARTERS 

OR ALTERING THE FURNACE FOR HIGHER 

HEAT OUTPUT MAY CAUSE DAMAGE TO THE 

FURNACE AND COULD RESULT IN A HOUSE 

FIRE. USE ONLY APPROVED FUELS AND 

OPERATION GUIDELINES

WARNING

!

WARNING

!

WARNING

!

CAUTION

!

CAUTION

!

INSPECT FLUE PIPES, FLUE PIPE JOINTS, AND 

FLUE PIPE SEALS REGULARLY TO ENSURE THAT 

SMOKE AND FLUE GASES ARE NOT DRAwN INTO, 

AND CIRCULATED BY, THE AIR-CIRCULATION 

SYSTEM.

CAUTION

!

Summary of Contents for PF-120

Page 1: ...ved for wood pellets Burning of any other type of fuel voids your warranty Hot glass will cause burns Do not touch glass until it is cooled NEVER allow children to touch glass Keep children away CAREF...

Page 2: ...nufactured by Fabriqu par hearth home Technologies Inc 352 Mountain house Road halifax PA 17032 do not ConneCt this unit to A ChiMney Flue serVinG Another APPliAnCe wArninG DO NOT operate with fire ch...

Page 3: ...7 D Fuel Specification 8 E General Operating Information 9 F Main Operating Control 9 G Before Your First Fire 10 H Wall Control 10 I Low Fuel Sensor 10 4 Operating Instructions A Starting Your First...

Page 4: ...plates pellet or corn burnpot front plate locks corn auger extensions ceramic inserts and ceramic insert plates 2 noise caused by minor expansion contraction or movement of parts 3 damage resulting fr...

Page 5: ...elow actions DO NOT Install or operate damaged appliance Modify appliance Install other than as instructed by Hearth Home Technologies Operate the appliance without fully assembling all components Ove...

Page 6: ...ear Space Warning RISK OF FIRE Do NOT place combustible objects in front or to the sides of the appliance High temperatures may ignite clothing furniture or draperies NOTICE Clearances may only be red...

Page 7: ...is an approximate temperature and may vary 2 Feed adjuster Sets the maximum feed rate Test Runs all motors at full speed for one minute to check operation After one minute the combustion blower will...

Page 8: ...el could turn back into sawdust which does not flow 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 Pel...

Page 9: ...TYPE lantern fuel kerosene charcoal lighter fluid or similar liquids to start or freshen up a fire in this heater Keepall such liquids wellaway from the heater while it is in use DO NOT BURN GARBAGE G...

Page 10: ...aces are kept the more efficient the furnace will be Do not burn garbage gasoline naptha engine oil or other inappropriate materials CAUTION G Before Your First Fire 1 Make sure your appliance has bee...

Page 11: ...4 1 Figure 4 2 Figure 4 3 Odors and vapors released during initial operation Curing of high temperature paint Open windows for air circulation Odors may be irritating to sensitive individuals CAUTION...

Page 12: ...to what temperature the fan limit control is reading in the plenum When the wall control is satisfied the blower will shut down until the wall control sees a demand for heat 3 Occasionally the applian...

Page 13: ...servative number and will probably need to be increased if maximum BTU output is desired After you know a feed rate setting that works well for your application use that setting 3 Flip the Igniter Swi...

Page 14: ...the AUTOMATIC mode the wall control will function as in Auto Light except the fire will not be allowed to go out It will only be allowed to go to a minimum burn rate between the times the wall control...

Page 15: ...appliance before servicing Smoke spillage into room can occur if appliance is not cool before unplugging Risk of shock if appliance not unplugged before servicing appliance A Proper Shutdown Procedure...

Page 16: ...nd pull it out of the furnace Lift the handle and use it for carrying the ash pan Close the inner door before disposing of the ashes Disposal of Ashes Ashes should be placed in a metal container with...

Page 17: ...it is cooled down or cold Remove ash pan Swing the latch handle up until you feel it contact the top of the swing plate Then push upward until you see the burnpot swing out Figure 5 5 Lift the burnpot...

Page 18: ...ved for easier replacement later Remove the lower baffle plate This baffle is a flat plate that sits on the firebox floor Tip the top edge toward the burnpot and lift up and out of the furnace Note ho...

Page 19: ...blades and the blower plate sealing overlap Figure 5 13 Note Be careful not to bend the fan blades this will throw the fan blade out of balance or it may rub the inner chamber which may affect the pe...

Page 20: ...cleaning mechanism Figure 5 15 This cleaning should be done at least once a week although it can be done more frequently The cleaner the heat exchangers are the more efficient the furnace will be Thi...

Page 21: ...age 3 Blinks Indicates that the ESP Exhaust Sensing Probe has gone out of range too many times If the unit seems to be operating normally Perform a manual reset If the code persists you ll need to cal...

Page 22: ...roduce more ash the higher burn settings produce less The more it burns on low the more frequent cleaning of the glass is required 4 Glass has turned dirty 4 Excessive build up of ash The lower burn s...

Page 23: ...t exchanger tubes may need to be cleaned 4 Combination of all the above 5 6 status blink A 6 blink control board status indication is caused by poor or incomplete combustion The circuit board has the...

Page 24: ...inal disposal If the ashes are disposed of by burial in soil or otherwise locally dispersed they should be retained in the closed container until all cinders have thoroughly cooled Other waste shall n...

Page 25: ...ponsible for all high limit safety control There are 2 high limits one normal operation high limit and one backup high limit The control has an automatic diagnostic circuit that continuously monitors...

Page 26: ...nly shut down Your appliance will pulse the blower every few seconds to clear exhaust until the re is out NOTE The UPS provides safe shut down only It is not intended for continued operation Your appl...

Page 27: ...K DPDT RELAY flange mtd GRAINGER 2XCO2 GREEN GREEN 2 1 4 3 6 5 16 3 AWG PVC CORD CORD CONNECTOR WHITE POWER FROM THE UPS This plugs into the UPS When power fails UPS will supply current to the relay M...

Page 28: ...nge Hopper Lid 3 31 73325 Gasket Hopper Lid 10 Ft 1 00 00248 Y Gasket Hopper Throat 3 44 677185 Y 3 Fan Control High limit 3 20 23139 Y 4 Combustion Blower 3 21 08639 Y Mounting Plate 1 10 73416 Gromm...

Page 29: ...00 67900 Y 9MM Silicone Tube 5 Ft 1 00 511427 Y 10 4 Pellet Air Intake Assembly 1 10 06810A 10 5 Gasket Feeder Air Intake Pkg of 6 3 44 72224 6 Y 10 6 UL Feeder Air Intake 1 10 73811W 10 7 Gasket Ultr...

Page 30: ...10 73695A Y Clean Out Cover 2 Sets 1 00 06623 Y Thumb Screw Pkg of 10 3 31 782108 10 Y Flame Guide 3 00 08534 Y Flame guide insulator 3 44 35263 Y Gasket Burn Pot Pkg of 5 1 00 07381 Y Silicone Gaske...

Page 31: ...e Igniton 3 20 02679 Y Air Pump Bracket 2 00 853500B Y Igniter Element Pressure Ignition 1 00 10450 Y Inner Ash door Assembly 1 10 73321A Gasket 1 4 Rope Black w PSA Glass 15 Ft 1 00 2312 Y Inner ash...

Page 32: ...Harman PF 120 Owner s Manual_R3 2014 ___ 10 14 32 3 90 08120c...

Page 33: ..._____________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________...

Page 34: ...the Combustion Blower and Feeder Motor for operation 7 Turn Feed Adjuster back to the 4 setting 8 Turn the Temp Dial to the desired temperature 9 Turn all other Furnace Control knobs to the settings...

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