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XXV Pellet Stove

3-90-00885R17_02/15

Fuel and Fuel Storage

Pellet  fuel  quality  can  fluctuate  from  manufacturer  to 

manufacturer, and even from bag to bag. 
Hearth & Home Technologies recommends using only fuel 

that is certified by the Pellet Fuels Institute (PFI).

Fuel Material

•  Made from sawdust and/or other wood by-products

•  Shelled field corn (when mixed with wood pellets)

•  Source material typically determines ash content

Higher Ash Content Material

•  Hardwoods with high mineral content

•  Bark and leaves as source material

•  "Standard" grade pellets, corn and other biomass

Lower Ash Content Material

•  Softwood; pine, fir, etc.

•  Materials with lower mineral content

•  "Premium" grade pellets

Shelled field corn

•  Must be 15% moisture content or less

•  Must be clean and free of debris

•  Must be mixed with wood pellets. (Up to 50%)

•  Stalk  parts,  excessive  fines  and  cob  remnants  may 

cause feed system jams or blockage

WARNING! Risk of Chemical Poisoning!

Do 

NOT

 burn treated seed corn

•  Chemical pesticides are harmful or fatal if swallowed

•  Burning treated seed corn will void the product warranty

Clinkers

Minerals  and  other  non-combustible  materials,  like  sand, 

will turn into a hard glass-like substance when heated. 
Trees from different areas will vary in mineral content. For 

this  reason,  some  fuels  will  produce  more  clinkers  than 

others.

Moisture

.125Always burn dry fuel. Burning fuel with high moisture 

content takes energy to dry and tends to cool the appliance 

thus, robbing heat from your home. Damp pellet fuel could 

turn back into sawdust which does not flow properly through 

the feed system.

NOTICE

Hearth & Home Technologies is not responsible for stove 

performance or extra maintenance required as a result of 

using fuel with higher ash or mineral content.

Fuel Specifications

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)

•  Pellet  length  can  vary  from  lot  to  lot  from  the  same 

manufacturer 

Performance

•  Higher ash content requires more frequent maintenance.

•  "Premium" grade pellets will produce the highest heat 

output.

•  Burning  pellets  longer  than  1-1/2  inches  (38mm)  can 

cause inconsistent feeding and/or ignition.

We recommend that you buy fuel in multi-ton lots whenever 

possible.  However,  we  do  recommend  trying  different 

brands  prior  to  purchasing  multi-ton  lots,  to  ensure  your 

satisfaction.

CAUTION!

 Attempting to burn fuels such as charcoal has 

the potential of generating Carbon Monoxide which is 

DEADLY. Never burn fuels other than those listed on the 

appliance safety label.

When changing from wood pellets to a corn/pellet mixture, 

the FEED ADJUSTER will likely need adjusted to a lower 

setting. When under maximum demand, ensure there is no 

unburned fuel being pushed into the ash pan.

Storage

•  Wood pellets should be left in their original sealed bag 

until ready to use, to prevent moisture.

•  Shelled  corn  should  be  stored  in  a  tightly  sealed 

container to prevent moisture and to deter pests

•  Do not store fuel within the specified clearance areas, 

or in a location that will interfere with routine cleaning 

and maintenance procedures.

Tested  and  approved  for  use  with  wood  pellets  and  a 

mixture  of  shelled  field  corn  and  wood  pellets  ONLY. 

Burning of any other fuel will void your warranty.

caution

!

Summary of Contents for XXV Freestanding Pellet Stove

Page 1: ...tallation 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 Tes...

Page 2: ...hich does not flow properly through the feed system NOTICE Hearth Home Technologies is not responsible for stove performance or extra maintenance required as a result of using fuel with higher ash or...

Page 3: ...nly with 5mm ceramic available from your dealer For further instruction refer to owner s manual Keep viewing and ash removal doors tightly closed during operation CLEARANCES TO COMBUSTIBLES Back Wall...

Page 4: ...XV fusing the highest caliber pellet stove innovations with the allure of cast iron Assembly Installation 5 Installation 6 Venting 8 ESP Control 16 Low Draft Voltage Adjustment 17 Automatic Operation...

Page 5: ...tion and repair of this Harman stove should be done by a qualified service person We recommend that the stove be inspected before use and at least annually by a qualified service person Periodic clean...

Page 6: ...combustion blower and its indicator light shuts off prior to opening the firebox door or ash door The minimum floor protector material is 20 gauge sheet metal Other floor protector materials are cera...

Page 7: ...ag screws 2 The unit must be connected to outside air See page 10 3 Floor protection and clearances must be followed as shown above 4 The appliance must be properly grounded to the frame of the mobile...

Page 8: ...pipe G The clearance to an inside corner is 12 H A vent must not be installed within 3 feet 90cm above a gas meter regulator assembly when measured from the horizontal center line of the regulator I...

Page 9: ...ions 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 XXV operates with a positive vent pressure...

Page 10: ...est located on the same exterior wall as the exhaust vent outlet and located lower on the wall than the exhaust vent outlet When the appliance is roof vented The air intake is best located on the exte...

Page 11: ...increase fire risk 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 sho...

Page 12: ...de diameter of this liner should be 4 Either flexible or rigid liner may be used for this purpose Refer to Method 6 Be sure to design the venting so that it can be easily cleaned Venting 4 Installing...

Page 13: ...et vent pipe fittings Seal pipe joints with silicone or aluminum tape in addition to the sealing system used by the manufacturer Pipe size should be increased to 4 using this method 6 Installing into...

Page 14: ...nnector manufacturers recommendations Due to combustible fuel vent pipe to hopper clearances must meet guidelines stated by NFPA or local codes 8 Installing through the ceiling Through the ceiling ven...

Page 15: ...walls of the house and to prevent re entry of soot or ash into the house Maintain specified clearances to windows doors and air inlets including air conditioners Vents should not be placed below venti...

Page 16: ...lector Allows you to choose between Room Temp Mode Stove Temp Mode or OFF Also allows you to vary the distribution blower speed by turning the knob to the high or low side of each mode Feed adjuster S...

Page 17: ...tor or the igniter to operate Combustion Motor Speed Control Low draft only set point The small straight screwdriver slot is plastic therefore the unit can be adjusted while in operation Fig 29 Low Dr...

Page 18: ...ature to your desired setting In the Room Temperature Mode you can select either Auto or Manual modes for the igniter using the igniter toggle switch When the toggle switch is in the Auto position the...

Page 19: ...amount of time per cycle that the feed motor is allowed to run Based on the control settings and temperature demand the control will make it s own determination of how long to run the feed motor UP T...

Page 20: ...llets set the feed adjuster to 4 Fig 22 This is a conservative number and will probably need to be increased After you know a feed rate setting that works well use that setting Remember if your feed r...

Page 21: ...e as AUTO settings The blower will shut off completely if the temperature on the ESP is too low Igniter Switch to MANUAL Stove Temperature Mode The advantage of this mode is to allow the operator to h...

Page 22: ...ash bed is not obtainable it is not a problem The 1 ash bed is only a maximum burn rate and at most normal settings the ash bed will be larger Manual Cold Start Igniter Switch to MANUAL up position Ma...

Page 23: ...to the desired location 50 maximum The room sensor should be installed in the location where you want to control the temperature In most installations locating the room sensor behind the stove near t...

Page 24: ...gloves if the stove is not cooled down See Fig 33 2 Slide the ash pan back into the stove seating it against the rear of the firebox Lift the ash lip to close the ash door and then close the front do...

Page 25: ...o lock into place and tightening the 3 wing nuts Be sure the fan plate is flush with the exhaust housing on the stove body and the motor armature points up toward the hopper 11 Slide ash pan into the...

Page 26: ...off of the igniter element Figure 41 The igniter is made to be removable for service by insulated male female wire connectors These connections between the hot leads the wires inside the burn pot and...

Page 27: ...n each screw evenly to avoid making any stress points Maintenance Pellet fines will accumulate in the feeder body over a period of time therefore a yearly inspection and cleaning of this must be perfo...

Page 28: ...ust on the rear of 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 p...

Page 29: ...hopper 2 Draft is too low blocked flue 3 Something is restricting fuel flow 4 Hopper lid not closed properly 5 Feed motor or combustion blower has failed Trouble Shooting Cleaning Burn Pot Whenever y...

Page 30: ...P MAX WATTS 625 240 VAC 50 HZ 2 6 AMP DISTRIBUTION BLOWER COMBUSTION MOTOR 2 OUTBOARD FEEDER MOTOR ACC XXV 1 LT BLUE LOW PRESSURE SWITCH N O CONTACTS 6 WHITE 11 PIN PLUG BLUE PART NO 3 90 00777E 10 IN...

Page 31: ...ration Your appliance will recognize when power is restored What happens depends on ESP temperature and whether it is equipped with automatic ignition In Automatic setting units equipped with automati...

Page 32: ...e construction warranty coverage begins on the date of first occupancy of the dwelling or six months after the sale of the product by an independent authorized HHT dealer distributor whichever occurs...

Page 33: ...is warranty does not cover the following Changes in surface finishes as a result of normal use As a heating appliance some changes in color of interior and exterior surface finishes may occur This is...

Page 34: ...o 2 or 3 Set temperature knob to desired amount Turn mode selector knob onto Room Temp mode After the fire has lit watch that the fuel does not feed too fast that it pushes the red glowing fuel bed of...

Page 35: ...35 XXV Pellet Stove 3 90 00885R17_02 15 Service Maintenance Log Date Of Service Performed By Description Of Service...

Page 36: ...ting appliance boasts uncompromising attention to detail and helps preserve our planet by using environmentally responsible fuels Signature of Boxer Your premium quality hearth product designed and as...

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