Harman Stove Company PF-100 Furnace Service Training Download Page 34 | Manualshive

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Feed Motor Circuit

Harman Pellet Service Training

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Summary of Contents for PF-100 Furnace

Page 1: ...Pellet Stove Service Training Includes all pellet burning units Manufactured by Harman Stove Company Harman Pellet Service Training 1 ...

Page 2: ...ept of air flow through a Harman pellet unit Understand the Harman patented feed system Apply knowledge to properly diagnose or troubleshoot Properly inform and educate consumers about pellet burning Harman Pellet Service Training 2 ...

Page 3: ...ensor control 0 to 48 000 BTU Gold or Bright nickel trim Tile inserts are standard Now cleaner glass Easier cleaning access Cast Iron rear brick panel Smoked Glass Hopper Lid Optional Log Kit available Harman Pellet Service Training 3 ...

Page 4: ... 000 BTU Mirrored Glass 76 Lb Hopper capacity Easy cleaning access Harman Pellet Service Training 4 Options Include Brushed Stainless or Bright Nickel Door trim Louvers to Match Heat Shields Hopper Extension Ash Door Tile Kit Slate Tiles 3 Piece Log Set ...

Page 5: ...tomatic Ignition Room Sensor control 72 lb Hopper Capacity Options Include Brushed Stainless or Bright Nickel Door trim Louvers to Match Heat Shields Hopper Extension Ash Door Tile Kit Slate tiles 3 Piece Log Set Harman Pellet Service Training 5 ...

Page 6: ...000 BTU Manual Ignition Only Thermostat Ready 50lb Hopper Capacity Options Include Gold Door Sunrise Frame Heat Shields Hopper Extension Ash Door Tile Kit Gold Louver Trim 3 Piece Log Set Harman Pellet Service Training 6 ...

Page 7: ... 8 000 to 53 000 BTU Manual Ignition Room Sensor control 40 lb Hopper Capacity Easy slide out design Options Include Brass window trim Gold air grill plates 3 pc Log set Oversize and Custom wings Harman Pellet Service Training 7 ...

Page 8: ...Accentra Cast Iron Pellet Stove Harman Pellet Service Training 8 0 to 40 000 BTU Automatic Ignition Quiet operation Room sensor control Smoked Glass Hopper Lid Options Floor Protector Leg Kit ...

Page 9: ...matic Ignition Room sensor control Track system frame 57 Lb Hopper Capacity Options Include 2 Smaller hoppers Wing extensions Log set Service rail kit Outside air kit Zero clearance box Mantles and hearths Harman Pellet Service Training 9 ...

Page 10: ...t Service Training 10 The XXV 0 to 50 000 BTU Automatic Ignition Mirrored Glass Silent operation Room sensor control Highly detailed Castings 65 Lb Hopper Capacity Options Top flue conversion 25th Anniversary logo ...

Page 11: ...f the stove and extends it to the top with a six inch stub This gives the appearance of a wood stove and also allows venting with existing single wall connector A 12 inch piece of 4 PL vent is included to act as an insulator Harman Pellet Service Training 11 ...

Page 12: ...Hot Air Furnace 0 to 112 000 BTU Automatic Ignition Room temp control 160lb Hopper capacity 1000 cfm blower Options 1450 and 2000 c f m blower Outside air flex pipe A C relay Harman Pellet Service Training 12 ...

Page 13: ...Feeder Stirrer to ensure complete burn Accordion heat exchanger 80 lb Hopper capacity Options Include Bright Nickel or Brushed Stainless Door Trim Matching Louvers Heat Shields Hopper Extension Ash Door Tile Kit 3 Piece Log Set Pellet grate Hopper Strainer Harman Pellet Service Training 13 ...

Page 14: ...Pellet Stove Service Training Installation Guidelines Harman Pellet Service Training 14 ...

Page 15: ...and follow local codes Check for proper power supply at wall outlet Use only approved pellet venting materials Recommended to use at least 4 feet of vertical venting whether inside or out Limit the amount of horizontal venting Always record the draft reading upon completion of installation Harman Pellet Service Training 15 ...

Page 16: ...rvice Training 16 This drawing shows the recommended venting Configuration for a Harman pellet stove 90 45 degree elbows 4ft Vertical rise Cleanout T Wall strap Use only approved pellet venting Standard Venting Method ...

Page 17: ...t Invincible series can be connected to 100 outside air Benefits Include Higher efficiency Allows termination of venting to be closer to windows or doors Does not change air quality in the home Harman Pellet Service Training 17 ...

Page 18: ... Intake W Flapper Rear view of stove Outside Air Weldment Part 1 10 08542 25 ft flex 1 00 08543 3 ft flex 2 00 08543 Direct vent wall pass thru 1 00 677077 PF100 furnace uses 2 3 4 in flex pipe Harman Pellet Service Training 18 ...

Page 19: ...ead in the smaller vertical slot and one lead in the rounded Ground slot Here you should get the same reading as you did between the two vertical slots For the third test place one lead in the large vertical slot and the other lead in the ground slot you should get a reading of 0 to 10 Volts only Some people seem to think that an outlet is fine because their lamp and radio work fine plugged into i...

Page 20: ...ncludes a digital multi meter This draft meter includes a bolt type fitting to attach the meter to the stove Taking a draft reading before installing the venting will give you a reference point to shoot for after the stove is vented Lower readings after installation indicate possible restrictions in the venting Item 1 00 00637 Harman Pellet Service Training 20 ...

Page 21: ... the hose to the test port on the stove using the bolt tube fitting supplied in the kit Turn feed adjuster knob to Test All motors will run on high Record high draft reading 5 W C or more After approximately 2 minutes the two blowers will begin to alternate between high and low When the combustion blower is on low record the low draft reading 2 W C to 35 W C Remember This is negative pressure Turn...

Page 22: ...gative pressure Attach the other end of the hose to the test port on the stove using the bolt tube fitting supplied in the kit Turn feed rate knob to Turbo All motors will run on high Record high draft reading 5 W C or more Turn Feed Rate knob to 1 and allow the unit to run for about a minute record the low draft reading 15 W C to 20 W C Adjust pot on back of circuit board if needed Turn Feed Rate...

Page 23: ...Harman Pellet Stoves Lighting and Operation Harman Pellet Service Training 23 ...

Page 24: ...Fill Burn pot with pellets Turn mode selector knob to Stove Temp On 38 model Turn feed rate above 2 Apply a generous amount of starting gel to the pellets in the burn pot Light the pellets in the burn pot and close the door Select temperature or burn rate Harman Pellet Service Training 24 ...

Page 25: ...witch to Auto Turn mode selector knob to Room Temp or Stove Temp Status light will come on steady If status light blinks refer to the blink codes in the owner s manual The combustion blower and feed motor will begin to operate At this time the igniter is also on Within six minutes there will be flames Harman Pellet Service Training 25 ...

Page 26: ...oles and heats the pellets to their ignition point As the pellets are heating up they will produce some smoke Now is a good time to check for leaks in the venting system When the gases get hot enough to ignite the smoke will change to flame and the fire is started As the fire burns and the exhaust temperature increases the feed motor will run to keep the temperature increasing When the exhaust tem...

Page 27: ... the fire out of the burn pot One final adjustment to be made is the feed rate This applies to all models except the PP38 and the PC 45 To adjust the feed rate assure that you are in Stove Temp mode and turn the temperature dial to the maximum setting Start with the feed adjuster set on 4 which is a maximum of40 seconds per 1 minute cycle Allow the stove to burn for at least 1 hour After the hour ...

Page 28: ...holes in the burn pot grate and through the burning fuel From here the heat and exhaust gases travel to the top of the stove and heat the heat exchanger surfaces After hitting the top of the firebox the only way left to go is down The exhaust drops a majority of the fly ash in the ash pan as it passes by in route to the venting system Understanding this air flow pattern will help you to realize th...

Page 29: ... down to help the fire to cool When the fire cools to a exhaust temperature of about 260 deg F The feed motor will shut off When the exhaust temperature cools to around 90 deg the combustion blower will shut off Note The PC 45 will continue to run the combustion blower for five hours after the ESP probe cools Also upon power up the combustion blower will run for one minute If turned to on and back...

Page 30: ...Wiring Diagram applies to all automatic stoves Harman Pellet Service Training 30 ...

Page 31: ...Incoming Power Circuit Harman Pellet Service Training 31 ...

Page 32: ...Combustion Blower Circuit Harman Pellet Service Training 32 ...

Page 33: ...Distribution Blower Circuit Harman Pellet Service Training 33 ...

Page 34: ...Feed Motor Circuit Harman Pellet Service Training 34 ...

Page 35: ...Igniter Circuit Harman Pellet Service Training 35 ...

Page 36: ...PF 100 Wiring Diagram Harman Pellet Service Training 36 ...

Page 37: ...PF 100 Incoming Power Circuit Harman Pellet Service Training 37 ...

Page 38: ...PF 100 Thermostat Control Circuit Harman Pellet Service Training 38 ...

Page 39: ...PF 100 Combustion Blower Circuit Harman Pellet Service Training 39 ...

Page 40: ...PF 100 Distribution Blower Circuit Harman Pellet Service Training 40 ...

Page 41: ...PF 100 Feed Motor Circuit Harman Pellet Service Training 41 ...

Page 42: ...PF 100 Igniter Circuit Harman Pellet Service Training 42 ...

Page 43: ...r white There is no difference in the probes beyond the wire color Excessive dirt build up on the probe or bent or damaged probes may send inaccurate temperature readings to the circuit board Clean with alcohol or glass cleaner For replacement purposes Harman offers A splice kit for the ESP probe When using the splice kit you need to be sure to use only the gel connectors supplied with the kit Par...

Page 44: ...closing when the pusher arm returns If the switch doesn t sense a full closure for a period of 30 minutes it will cause the status light to blink 2 blinks During this period if the unit is turned to off it will not shut down until it runs out of fuel and the ESP probe cools naturally This switch has been eliminated on all current models ...

Page 45: ... NC The hose ports correspond to the wiring positions When built the hose port for NC is broken off and the wire terminal For NC is bent This is to help prevent improper hook up The feed motor and igniter are wired through this switch and will not receive power if there is no draft or if the draft is too low The switch actuates at 17 W C Even though the indicator light may be on showing power to t...

Page 46: ...er clockwise direction The PF 100 uses a 6 r p m motor The Advance and Accentra models use a clockwise directional feed motor This is identified by either two white leads on older units or black and red leads on the newer ones It is also a 4 r p m Motor just turning the opposite direction for the chain drive Harman Pellet Service Training 46 ...

Page 47: ...out Easy access removal for cleaning Important when reinstalling an igniter be sure the wires within the burn pot are pulled out of the rear of the feeder body as far as they can be to prevent melting Only the leads from the igniter have Hi temp Insulation Harman Pellet Service Training 47 ...

Page 48: ...Harman Pellet Stoves Cleaning and Maintenance Harman Pellet Service Training 48 ...

Page 49: ... cleaned or changed Monthly Maintenance Shut down stove for thorough cleaning Scrape the heat exchanger clean combustion blower fan blade Inspect and clean the venting system Clean out the fines collection area Each model will have different methods and access areas for cleaning But all models have the same areas to clean Harman Pellet Service Training 49 ...

Page 50: ...Harman Pellet Stoves Technical Specifications Harman Pellet Service Training 50 ...

Page 51: ...hms 9 Distribution Blower 3 21 47120 Fasco B47120 2 11 7ohms 1 1 Igniter 1 10 06620 N A N A 50 54 ohms Advance Component Harman Part Manufacturer Amperage Resistance Combustion Blower 3 21 08639 J238 112 11142 1 7 6 5ohms 6 Feed Motor 3 20 08752 G A 904 2520 A1506 1 5 7ohms 7 Distribution Blower 3 21 22647 Dayton 2C647A 0 65 30ohms 3 Igniter 1 10 06620 N A N A 50 54ohms P 68 Component Harman Part ...

Page 52: ... J238 112 11142 1 7 6 5ohms 6 Feed Motor 3 20 60906 J238 112 1147105 0 98 9ohms 9 Distribution Blower 3 21 22647 Dayton 2C647A 0 65 30ohms 3 P 38 Component Harman Part Manufacturer Amperage Resistance Combustion Blower 3 21 08415 J238 087 8170 1 7 1 2 9ohms 9 Feed Motor 3 20 60906 J238 112 1147105 0 98 9ohms 9 Distribution Blower 3 21 22647 Dayton 2C647A 0 65 30ohms 3 XXV Component Harman Part Man...

Page 53: ...1142 1 7 6 5ohms 6 Feed Motor 3 20 09302 108 010000620 0 7 14 5ohms 1 4 1000 CFM Blower 1 10 01007 4C589 6 5 1450 CFM Blower 1 00 00862 5C091 4 2000 CFM Blower 3 21 52092 5C092 5 1 Igniter 1 10 00400 N A N A 34 35ohms 3 PC 45 Corn Stove Component Harman Part Manufacturer Amperage Resistance Combustion Blower 3 21 08639 J238 112 11142 1 7 6 5ohms 6 Feed Motor 3 20 60906 J238 112 1147105 0 98 9ohms ...

Page 54: ...eries of switches on the board dipswitches that are set differently depending on the stove model it is installed onto Some switches allow for changing things such as ignition feed cycle or igniter timing Included on the new circuit board is a test port to attach the DDM Digital Diagnostic Meter Harman Pellet Service Training 54 ...

Page 55: ...Harman Pellet Service Training 55 DIPSWITCH SETTINGS FOR 3 20 05374 Location of Dipswitch Advance Accentra P61A AccIn P68 ...

Page 56: ...The Harman Digital Diagnostic Meter Harman Pellet Service Training 56 ...

Page 57: ...Fire Air Flow The Accentra Insert and the P 68 have their burnpots designed to accommodate over fire air This allows for a more complete burn because of total gas combustion Harman Pellet Service Training 57 ...

Page 58: ...Harman Pellet Service Training 58 PC 45 Burn Pots ...

Page 59: ...Harman Pellet Service Training 59 ...

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