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

1

3-90-08120c

Please read this entire manual before 

installation and use of this pellet fuel-

burning room heater. 

Failure to follow these instructions could 

result in property damage, bodily injury 

or even death.

•   Do not store or use gasoline or other flammable vapors 

and liquids in the vicinity of this or any other appliance.

•   Do not overfire - If any external part starts to glow, you 

are overfiring. Reduce feed rate. Overfiring will void 

your warranty.

•   Comply with all minimum clearances to combustibles 

as specified. Failure to comply may cause house fire.

Check building codes prior to installation.
•   Installation  MUST  comply  with  local,  regional,  state 

and national codes and regulations.

•   Contact local building or fire officials about restrictions 

and installation inspection requirements in your area.

Tested  and  approved  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
•  CAREFULLY SUPERVISE children in same room as 

stove.

•  Alert children and adults to hazards of high temperatures.

  High temperatures may ignite clothing or other 

flammable materials.

•  Keep clothing, furniture, draperies and other flammable 

materials away.

HOT SURFACES!

Glass and other surfaces are hot during 

operation and cool down.

NOTE

To  obtain  a  French  translation  of  this  manual,  please 

contact your dealer or visit www.harmanstoves.com
Pour obtenir une traduction française de ce manuel, s’il 

vous  plaît  contacter  votre  revendeur  ou  visitez  www.

harmanstoves.com

Model(s):

PF-120 Pellet Furnace

NOTICE: SAVE THESE INSTRUCTIONS

CAUTION

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CAUTION

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WARNING

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WARNING

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Owner’s Manual

Care and Operation

INSTALLER: Leave this manual with party responsible for use and operation.

OwNER: Retain this manual for future reference.

Call your dealer for questions on Installation, Operation, or Service.

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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