Keeping
North America Warm
Since 1869
Hearth Focus
CORN & PELLET MULTIFUEL STOVE
6039HF
OWNER’S MANUAL
Installation - Operation - Maintenance Instructions - Repair Parts
READ THIS ENTIRE MANUAL, THOROUGHLY, BEFORE ATTEMPTING TO INSTALL AND/OR
BURN YOUR NEW HEARTH FOCUS CORN AND PELLET MULTI-FUEL STOVE. FAILURE TO FOL-
LOW THESE INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURIES OR
EVEN DEATH.
Safety Notice: If this stove is not properly installed, a house fire may result.
For your safety, follow the installation directions. Contact local building or fire officials
about restrictions and installation requirements peculiar to your area. Do Not Plug
this appliance into an electrical outlet before reading and understanding all operations
and always unplug the unit before attempting any work or maintenance. Do not
connect this stove to any chimney flue already serving another appliance. Carefully
observe and maintain all clearances to combustibles.
A note about fuel: Use only dried shelled corn with a moisture content of 14%
or less (11 to 12% provides the best results); any pellet fuel used should have
an ash content of 1% or less. If not, efficiency will suffer, and your warranty may be
voided.
Your Hearth Focus Corn/Pellet Stove operates on a negative pressure. Therefore, all
venting connections (elbows, T-pipe) must be sealed and airtight.
Use Hi-Temp silicone at each joint or connection.
SAVE THESE INSTRUCTIONS
UNITED STATES STOVE COMPANY GRANTS NO WARRANTY, IMPLIED OR STATED,
FOR THE INSTALLATION OR MAINTENANCE OF THE STOVE AND ASSUMES NO
RESPONSIBILITY FOR ANY CONSEQUENTIAL DAMAGE(S).
UNITED STATES STOVE COMPANY - 227 INDUSTRIAL PARK ROAD-SOUTH PITTSBURG, TN. 37380
TECHNICAL ASSISTANCE (423) 837-2100 - (423) 837-2109 FAX
851672
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6039HF ASSEMBLY
Assembly
1. Unpack unit and make sure all components are included; (4) Legs and all hardware for installation.
2. Inside the unit are two(2) Ash Dump Covers located to the left and right of the burnpot. Remove these for leg
and guiderail assembly. (See pg. 15 for ash dump cover desciption)
3. Fold the corner padding from the carton and lay it on the floor behind the unit. This is used to hold the heater up
off the floor to install the legs. Gently tilt the heater on its back, door opening up.
4. Assemble the legs using the eight(8) Bolts as shown.
5. After all bolts and screws have been tightened properly, set the heater back up on the legs and replace the two
ash dump covers. (See pg. 15 for ash dump cover placement)
1. The Auger is packed in the hopper and must
be installed properly as illustrated below.
2. Insert the Auger into the auger tube. Ro-
tate the auger until it fits into the coupling that
is already installed on the auger motor drive.
Seat the auger firmly. The Auger cannot be
turned by hand once installed properly.
NOTE:
Initial burn off may cause slight smoke and
odor the first few hours of operation.
Operate outside if possible
Continue with Installation
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SAFETY STEPS
IMPORTANT: Proper installation of this stove is necessary for safe and efficient operation.
Installing this product improperly may result in a house fire and personal injury. All applicable
building codes for your location must be followed. In areas where building codes require additional
steps to the installation of this product not included in this manual the building codes will take
precedent and must be followed. Contact your local building inspector to obtain any necessary
permits or inspection guidelines before installing the product.
• The Hearth Focus stove is designed to burn dry shelled corn, cherry pits, or pelletized fuel such as wood
pellets. The burning of other solid fuels such as cord wood or wood chips in this stove is not permitted.
• This product requires simple periodic maintenance for proper operation and long life of the stove. Read
and follow the maintenance schedule closely.
•
•
DISCONNECT THE POWER CORD BEFORE SERVICING THIS STOVE!
A power surge protector is required. The unit must be plugged in to a grounded 110-volt power
source. Circuit Boards are very expensive - protect yours!
• Always route the power cord away from the unit. Do not route cord in foot traffic areas. Do not pinch
cord under furniture.
• A working smoke detector must be installed in the same room as this product.
• Flammable or explosive liquids such as gasoline, naphtha, alcohol or engine oil must NEVER be used in or
around this stove. These liquids must be stored well away from this stove as the open flame in the
burner chamber could ignite the fumes of such liquids. Do not burn garbage in this unit.
• The moving parts of this stove are propelled by high torque electric motors. The auger and Fuel Agitator
can cause severe injury to body parts that may get near them. Keep all body parts away from the
auger and Fuel Agitator while the stove is plugged into an electrical outlet. These moving parts may
begin to move at any time while the stove is plugged in.
• According to HUD requirements, when installed in a mobile home, this stove must be grounded directly to
the steel chassis of the mobile home and bolted to the floor. Direct air access must be provided - Use
69FAK Fresh Air Kit
• This stove is not intended for use in commercial installations.
• Do not connect this stove to “B” vent. Use UL Listed Pell Vent ONLY!
BURNING SOLID FUELS
Ashes will have to be Removed from the stove periodically. See cleaning procedure.
Your Hearth Focus stove, due to the nature of solid fuels, will require brief periodic attention. Please do not expect to light
your stove and walk away from it. A few moments of adjustment and cleaning from time to time is an important part of
burning solid fuels, due to the vast differences in fuel, humidity and outside temperature.
The Hearth Focus stove has been designed to burn dry shelled corn, wood pellets and other pelletized fuels that meet
Association of Pellet Fuel Industries standards.
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BURNING SOLID FUELS continued...
SHELLED CORN (Dry, preferably corn with 11- 12% moisture content)
•
•
Corn must contain less than 14% moisture content. Wet corn will rapidly deteriorate stove components, reduce
efficiency and void all warranties. Purchase a moisture tester if in doubt.
Corn must be clean and free from debris. Never burn corn right from the field. Damage caused by dirty corn is not
covered by the product warranty. Ask for clean filtered bagged corn only. Stalk parts, excessive fines and cob
remnants will clog the auger.
•
NEVER BURN SEED CORN IN YOUR STOVE. Seed corn is treated with chemical pesticides that are harmful or fatal if
swallowed, therefore, seed corn is dangerous to have in the house, especially where children can reach it.
•
•
Never burn “Deer Corn.” It frequently contains molasses/sugars.
Store your corn supply in a dry place and keep bags or container sealed to prevent your corn from absorbing excess
moisture. Test the moisture content periodically to ensure the proper dryness.
•
There are many varieties of corn grown around the world. Each variety has unique characteristics including the shape
and size of the kernel. Your stove will burn more consistently with a small to midsize kernel corn. If the kernel size of
the corn varies greatly or if you switch sources frequently, you will get a less consistent burn. Therefore, purchasing
corn from the same source will help achieve a more consistent burn. DO NOT USE CORN WITH A HIGH WAX
CONTENT!
WOOD PELLETS
•
•
As with corn, be consistent in your pellet supplier. Pellets will vary in content and burn characteristics from supplier to
supplier. A consistent supply of pellets will result in a more consistant and effencient burn.
Check your pellets for foreign objects. Your stove warranty will not cover damage done to your stove due to foreign
objects in the fuel supply.
•
•
Store your pellets in a dry place to prevent them from absorbing added moisture.
To decrease sawdust buildup, the hopper will need to be vacuumed out after every 6-8 bags of pellets or more often if
the pellets are poor quality. You may have to screen each bag of pellets if sawdust becomes a problem.
•
Wood Pellets vary in size and ash content from less than 1% to 3% or more. Your stove will burn more efficiently with
small to midsize pellets. Low ash content pellets will allow you to burn the stove longer between cleanings. Only wood
pellets manufactured to the Association of Pellet Fuel Industries (A.P.F.I.) standard for residential pellets fuels are
recommended. Performance will suffer if nonstandard pellets are used. Consult your local Hearth Focus reseller for
more information on approved wood pellet fuel.
CAUTION: DO NOT PLACE SUCH FUELS WITHIN THE SPACE HEATER’S INSTALLA-
TION CLEARANCES OR WITHIN THE SPACE REQUIRED FOR CHARGING AND ASH
REMOVAL.
INSTALLATION REQUIREMENTS
FLOOR PROTECTION
The Hearth Focus Multifuel Stove may be installed on a combustible floor, with proper floor protection, or on a
masonry hearth. The hearth or noncombustible floor protector must extend a minimum of (6) inches (152mm)in front
and (6) inches (152mm) from each side of the ash removal door.
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CLEARANCES TO COMBUSTIBLES
The stove must be installed with the following minimum clearances to side and back wall combustible materials. NOTE:
These are minimum clearances to combustible walls established by the testing lab. The amount of room needed on the left
side of the unit to access the electrical panel is (6) six inches (152mm).
PARALLEL - A - Left Sidewall to Top Edge of Unit
B - Sidewall to Flue
C - Backwall to Flue
D - Backwall to Unit
E - Right Sidewall to Top Edge of Unit
CORNER - F - Adjacent Wall to Flue
G - Adjacent Wall to Unit
6 in./152mm
5 in./127mm
3 in./75mm
9 in./228mm
2 in./50mm
3 in./75mm
4 in./100mm
BACK WALL
BACK WALL
Backwall / Sidewall
Parallel
Corner Installation
NOTE:
Allow sufficient space to remove the left and right side panels for maintenance purposes.
6”
min.
6”
min.
6”
min.
HEARTH PROTECTION
These clearances must be maintained and may only be reduced by means approved by the regulatory authority
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GUIDELINES FOR EXHAUST VENTING SYSTEMS DESIGN
It is recommended that only an authorized installer install your pellet/corn stove, preferably an NFI certified
specialist. The following installation guidelines must be followed to ensure conformity with both the safety listing of this
stove and to local building codes.
INSTALLVENTATCLEARANCESSPECIFIEDBYTHEVENTMANUFACTURER.
•
•
•
A UL listed 3” or 4” type “PL” pellet vent exhaust system must be used for installation and attached to the pipe connector
provided on the back of the stove. Use a 3” to 4” adapter for 4” pipe. A cap must be used at the termination of type “L”
vent chimneys. 4” PL is required for elevations above 2,500 feet above sea level.
Do not terminate vent in any enclosed or semi-enclosed area, such as; carports, garage, attic, crawl space, under a
sundeck or porch, narrow walkway or close area, or any location that can build up a concentration of fumes such as a
stairwell, covered breezeway etc.
Vent surfaces can get hot enough to cause burns if touched by children. Noncombustible shielding or guards may be
required.
•
•
Do not install a flue damper in the exhaust vent of this unit.
Termination must exhaust above air inlet elevation. Installation MUST include three (3) vertical feet of pellet vent pipe.
This will create some natural draft to prevent the possibility of smoke or odor during appliance shutdown and to keep
exhaust from causing a nuisance or hazard from exposing people or shrubs to high temperatures. Do not connect
this unit to a chimney flue serving another appliance. Do not connect directly to a masonry chimney.
•
The installation must include a cleanout tee to enable collection of fly ash and to permit periodic cleaning of the exhaust
system. 90 elbows accumulate fly ash and soot thereby reducing exhaust flow and performance of the stove. Each
°
elbow or tee reduces draft potential by 30% to 50%. Use no more than 180 degrees of elbows (two 90-degree elbows,
or two 45-degree and one 90-degree elbow, etc.) to maintain adequate draft. Clean-out tees and elbows should not
be mounted directly to the rear of the stove.
•
•
Total length of horizontal vent must not exceed 48”(4ft.)/1,200mm. The maximum recommended vertical venting
height is 12-feet for 3-inch type “PL” vent. All joints in the vent system must be fastened by at least 3 screws, and all
joints must be sealed with RTV silicone sealer to be airtight.
The area where the vent pipe penetrates to the exterior of the home must be sealed with silicone or other means to
maintain the vapor barrier between the exterior and the interior of the home.
NOTE: These are guidelines only. Proper venting is accomplished by design and common sense. In most
installations 3 inch diameter venting is adequate. If it does not vent properly you will have to change it to
4 inches. You should not exceed 4 inch diameter venting.
DO NOT CONNECT TO ANY AIR DISTRIBUTION DUCT OR SYSTEM
VENTTERMINATIONCLEARANCES:
A) Min. 4-ft clearance below or beside any door or window
that opens.
B) Min. 1-ft clearance above any door or window that
opens.
C) Min. 3-ft clearance form any adjacent building.
I
D) Min. 7-ft clearance from any grade when adjacent to
A
public walkways.
F
E) Min. 2-ft clearance above any grass, plants, or other
B
combustible materials.
H
C
D
F) Min. 3-ft clearance from an forced air intake of any
appliance.
F
A
G) Min. 2-ft clearance below eves or overhang.
H) Min. 1-ft clearance horizontally from combustible wall.
E
Must be a minimum of 36-inches above the roof
and 24-inches above the highest point or the roof
within 10-feet.
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DESIGN GUIDELINES FOR OUTSIDE COMBUSTION AIR CONNECTION
1) For installations with horizontal through-the-wall exhaust, it is strongly recommended that the stove combustion air be
connected to the outside. If the home is newer or has been tightly insulated it is required to install outside combustion
air.
2) Connection to outside the house is REQUIRED for mobile home installations. We strongly urge use of the 69FAK Fresh
Air Kit.
90 DEGREE BEND TERMINATION
WIND HOOD TERMINATION
Wind Hood
2” Min. Diameter
3”
NOTE:
A wire mesh screen with a
maximum opening size of 3/8”
must be installed.
6”
2”
3) Only noncombustible pipe 2 inches (or greater) in diameter is approved to use for outside air connections (straight or
flexible). PVC pipe is NOT approved and should NEVER be used.
4) If the air inlet is connected to the outside, it MUST be terminated with a vertical 90-degree bend (down) or with a wind
hood. Failure to do so could result in a burn back during high winds blowing directly up the air inlet during a simulta-
neous power failure (see diagram above).
5) Blockage, excessive length, or extra bends in the air intake pipe will starve the stove of combustion air. A 90-degree
bend is equivalent in restriction to approximately 30 inches of straight inlet pipe.
CAUTION: The operation of exhaust fans such as bath room fans, attic fans, etc. might starve the heater of combustible air
creating a negative pressure in the room. Provide adequate ventilation in the room accompanying the heater. If not, the
pressure switch may shut off operation of the heater. (Due to negative pressure)
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INSTALLATION CONFIGURATIONS
Note: Where passage through a wall, or partition of combustible construction is desired, the installation
shall conform to CAN/CSA -B365
The Hearth Focus Corn/Pellet Stove Model 6039HF may be installed as follows:
1) A freestanding unit
MOBILE HOME INSTALLATION REQUIREMENTS
IN ADDITION TO THE STANDARD INSTALLATION INSTRUCTION, THE FOLLOWING
REQUIREMENTS ARE MANDATORY FOR INSTALLATION IN A MOBILE HOME:
WARNING
DO NOT INSTALL IN SLEEPING ROOM
1) Stove must be permanently bolted to the floor.
2) Stove must have permanent outside air source. (69FAK)
3) Stove must be permanently electrically grounded to the steel chassis of the mobile home.
4) All vertical chimney vent must have wall supports.
5) All exhaust systems must have a spark arrestor.
CAUTION
THE STRUCTURAL INTEGRITY OF THE MOBILE HOME FLOOR, WALL AND CEILING/
ROOF MUST BE MAINTAINED.
Check with your local building official as other codes may apply.
FREESTANDING STOVE INSTALLATION REQUIREMENTS
General Horizontal Exhaust Termination (Follow manufacturer’s instructions):
Locate proper position for the type “PL” wall thimble (F).
1)
2)
Use a saber saw or keyhole saw to cut a 7 1/4-inch diameter hole through the wall (E) for a 3-inch pipe. For a 4-inch
pipe, cut an 8 1/4-inch hole. Install the wall thimble (F)in the hole. The size of hole opening will vary with brand of wall
thimble.
Position stove approximately 12” from the wall on the noncombustible floor pad. Push the type “PL” pipe (B) through the
wall thimble (D). Squeeze a bead of high temperature RTV silicone sealer (A) around the outside of the 3” diameter
exhaust pipe approximately ½” from the stove back panel. Firmly push on a section of type “PL” pipe (B) until the inner
pipe liner pushes up against the bead of RTV sealer. Don’t seal the entire 3” diameter pipe as you will not be able to
disassemble the pipe at a later date. The bead of silicone will act as a gasket right on the end of the 3” pipe (B).
Alternate Method: An approved type “PL” connector back clamp may be used to allow easy disconnect for mainte-
nance. (The RTV sealant must be used in mobile home installation)
3)
Push stove with pipe attached towards wall. Pipe (B) will go through the wall thimble (F). Be careful not to dislodge the
thimble. Position stove not closer than 9” to the wall.
4)
5)
Install type “PL” termination cap (G) with rodent screen cap (optional) on outside end or pipe. Note: The end of the
exhaust pipe must extend a minimum of 12 inches from the outside of the building. Rodent screen cannot be less than
3/8” opening mesh.
If installing with combustion air from outside, cut a separate hole through the wall for the fresh air tube (C). This tube
must be 2” minimum diameter pipe. Connect outside air pipe inlet on stove. This tube must be terminated with a 90
degree elbow or hood.
6)
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Note: Always check dimensions on unit before cutting hole in wall
3’ Minimum
Vertical Pipe
6039HF
COMBUSTION
AIR INTAKE
1 7/8" DIA
EXHAUST OUTLET
3' DIA
10 1/16
12
11 5/8
Dimensional tolerance
±0.25”
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THROUGH THE WALL, VERTICAL PIPE INSTALLATION WITH TERMINATION CAP
The Hearth Pad is not required under the unit if the floor is noncombustible but is required 6 inches (152mm) beyond the
front of the unit and 6 inches (152mm) beyond each side of the door if the floor is a combustble floor. wood flooring, carpet,
linoleum, etc.
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GLASS MAINTENANCE, REMOVAL AND REPLACEMENT
Your Hearth Focus Corn/Pellet Stove comes to you with the glass door installed in place, ready for use. The glass is
surrounded on the edges with a gasket and seated in a glass channel. It is held in place with four (2) clips.
REMOVAL OF BROKEN OR DAMAGED CERAMIC GLASS
Open the door and lift off of hinges. If the door is tight, tap gently on the bottom of the door with your hand or rubber
hammer. Lay door down on newspaper with glass clips facing you. Using a #2 Phillips screwdriver, loosen the screws
and take off the glass clips. Remove the broken glass carefully and discard.
Reverse the above procedure for replacing new glass with new gasket.
WARNING
Do not operate unit with broken glass.
Do not substitute original factory glass.
You must use only factory authorized glass;
Do not slam door shut.
Do not strike glass.
Do not use abrasive cleaners.
Do not clean when glass is hot.
CLEANING THE GLASS
When the fire is first started, it will produce some smoke. The smoke might accumulate on the glass surface. Before the
fire gets hot, open the door and wipe the glass surface off with a damp rag. Do not touch the surface with your hands.
If after constant use, the glass is dirty, you must clean the glass so that it will not become etched with the fly ash. When
the glass has cooled off, take a damp rag, put a little fly ash from the unit on it and clean the glass. If this does not clean
the glass use a non-abrasive spray; 409 works well.
-
GLASS CLIPS
.
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UNDERSTANDING THE CONTROL BOARD
CONTROL PANEL
Turning the heater OFF/ON, as well as adjustments for the fuel feed
rate and room fan speed are performed by pressing the appropriate
button(s) on the control panel which is located on the lower left-hand
side of your Hearth Focus heater.
This unit can be changed between an automatic operation or a
manual operation. The controller comes default in the automatic
mode.
Pressing the “ON” button on the control panel will begin the start-
up sequence for the heater. Fuel will begin to feed through the auger
feed system after 3 minutes. Pressing and holding the “ON” button
will rotate the auger continuosly until button is released, which feeds
additional fuel.
Heat
Range
Room
Fan
Draft
Fan
Aux.
Pressing the “OFF” button on the control panel will cause the heater
to enter its shut-down sequence. The fuel feed system will stop
pulling fuel from the hopper and, once the fire goes out and the heater
cools down, the blowers will stop running.
Auto
Pressing the “Heat Range” arrows, up or down, will adjust the
amount of fuel being delivered to the burnpot.
The draft fan (exhaust) will come on as soon as the “ON” button is
pressed. The fan will automatically adjust its speed in accordance
to the heat range setting. However, this speed can be manually
operated by pressing the “Draft Fan” arrows up or down. “Draft
Fan” when pressed, the display will show “Df-A”, which is automatic.
Press the arrows again to adjust fan speed. When the heater is in
the manual mode, the optional thermostat will not properly control
the unit. When adjusting the Draft Fan setting, try only 1 setting
above or below the heat setting.
Manual
The room fan will come on once the unit has reached operating temperature (110°F). By pressing the “Room
Fan” buttons, the display will show “Rf-A” which is automatic or "Rf-1" through "Rf-9" for manual settings. In
auto mode, the room fan’s speed will automatically be adjusted in accordance with the heat range setting. By
pressing the “Room Fan” up arrow, you can adjust the fan speed setting up to "Rf-9". The fan speed can be
adjusted to a higher setting than the heat setting but not lower.
The “Aux” button is for Agitator operation. When the unit is “OFF”, pressing the “Aux” arrows will rotate the
agitator for easy removal for cleaning. The agitator, when in Automatic mode, will operate at set intervals.
However, these can be changed by pressing the arrows on the “Aux” button. The agitator can be adjusted
from 0 to 9, setting “0” is off and setting “9” is high.
The “Auger Delay” button can be used to pause rotation of the Auger andAgitator for approx. 1 minute. This
can be cancelled by pressing the “ON” button.
The “Mode” button is used to switch between manual and automatic mode. When in auto mode, the fan,
auger, and agitator will operate at preset intervals unless changed manually using the buttons mentioned
above. When in manual mode, the draft fan (exhuast) will operate at full speed (100%), so the air must be
controled with the damper just below the viewing door.
During normal operation, the unit is constantly monitored for problems. In the event of an error condition, the
unit will stop and an error will be displayed. See the list of error codes found at the end of this manual.
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LIGHTING INSTRUCTIONS
CAUTION: DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE
HOT WHILE IN OPERATION. KEEP CHILDREN, CLOTHING AND FURNITURE AWAY. CONTACT MAY CAUSE SKIN
BURNS.
Before lighting your Hearth Focus for the first time, make sure that all items are out of the hopper, ash pan and firebox
area. Press the “On” button and allow your heater to run for at least 4 minutes, to check for proper operation. Once your
heater is started, you will notice the exhaust blower starts immediately. If you press the “Heat Setting” button up, the
exhaust blower changes speed, increasing speed the higher the heat setting. After 3 minutes, the auger and agitator will
start rotating. Note: The distribution blower will not operate at this time, as a temperature of at least 110 degrees must
be reached before operating. If proper operation of your heater is confirmed, you can add fuel to the hopper and allow the
auger to purge the fuel to the firepot.
TO START:
•
Turn the Heater to the “OFF” position and place a small handful of wood pellets or fire starting pellets (Pellets that already
contain fire starter) in the firepot.
•
•
•
Squirt only a small amount of fire starter gel on top of the wood pellets (NOT necessary if using fire starting pellets).
Light the fire starter and wait approx. 1-minute for it to start actively burning.
Press the “On” button, adjust the heat setting to read “Hr-2” and pull the damper out approximately 1.5 inches for this
heat setting. This will automatically match your feed rate with the proper combustion air. As you increase the heat
setting, your feed rate and combustion air increase together.
NOTE: Even if you are burning corn or other fuels in your unit, wood pellets make an excellent source of
starter fuel. Corn takes too much starter to get lit and up to temperature.
•
Three minutes after turning the stove “On”, the auger will begin feeding fuel into the firepot along with the agitator
turning. You should have the starting fuel completely burning in the firepot as the agitator rotates. NOTE: If the starting
fuel is not burning hot enough, you may see the fire begin to go out as new fuel is being added. If this occurs, pressing
the “Auger Delay” button will allow the auger to pause for 1 minute. Pressing the “ON” button will resume the auger if
1 min. is to long. If not enough fuel is the reason for not burning, pressing and holding the “ON” button will allow the
auger to run continuosly until you release the button.
•
•
Once the fuel starts burning aggresively, you can adjust the heat setting to your desired range.
As you begin to have better understanding of how the heater operates and the amount of heat you require, you can adjust
the heat settings up or down to your satisfaction.
•
•
Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar liquids to start or
‘freshen up’ a fire in this heater. Keep all such liquids well away from the heater while it is in use.
Overfire Protection - If the heater is being overfired, burned too hot, the heater will automatically shutdown to avoid
damage to components in the heater. Refer to “Lighting Instructions” for proper use.
Turning the stove off
Pressing the OFF button will cause the stove to enter a shutdown mode. If the stove has reached operating temperature, the
OFF Indicator will blink until the shutdown procedure succeeds in lowering the stove temperature. The Room Fan will stay
on to cool the stove, and the Exhaust Fan will stay on to remove smoke and heat from the combustion chamber. The Agitator
will stop. The Auger will bump the fuel out of the auger every few seconds to prevent the fuel in the auger from burning.
Once the temperature of the burn chamber falls below about 100 degrees F and the pressure switch detects that the door
is closed, the fans will stop and the Auger will run for a few seconds to purge the auger system of any burned fuel. At this
point, the OFF Indicator will go out and the stove will turn completely off. If during burning, the stove has reached at least
120 degrees F, the shutdown procedure will also include a 15 minute shutdown timer that will keep the stove in the shutdown
state for at least 15 minutes regardless of whether it is cool or pressure is detected. The 15 minute timer can be turned off
by pressing the off button during shutdown. This will cause the system to exit shutdown and return to the “OFF” mode as
soon as the door is closed and the stove is cool.
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DISPOSAL OF ASHES
Disposal of Ashes
Ashes should be placed in a metal container with a tight fitting lid. 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 been thoroughly cooled.
MAINTENANCE INSTRUCTIONS
Soot and Flyash - Formation and Need for Removal
The products of combustion will contain small particles of flyash. The flyash will collect in the exhaust venting system and
restrict the flow of flue gases. Incomplete combustion, such as occurs during startup, shutdown, or incorrect operation of
the room heater will lead to some soot formation which will collect in the exhaust venting system. The exhaust venting
system should be inspected at least once per month (of heavy use) to determine if cleaning is necessary. Corn has a high
ash content.
Daily Maintenance
•
Surfaces on the front of the stove will be extremely hot during operation. Always wear heat resistant gloves
to perform periodic maintenance.
•
Using a wooden stick, tap the side heat exchangers that are located on the left and right sides of the firebox. When you
open the door, they are located directly inside to the left and right. When you tap the sides with the wooden stick the
loose fly ash will drop out of these holes.
•
•
Inspect inside stove for excessive ash build up. You will learn some fuels produce more ash than others. If excessive,
remove the inside ash clean-outs. Once you have cleaned out the ashes, replace the clean-outs. Depending on your fuel
and use, these clean-outs may be removed only weekly.
If clinkers develops in the firepot,clean thoroughly. You may have to do this once or twice a day depending on the
moisture content of the corn. If this is not cleaned out, it could cause the fuel stirrer to jam. USSC highly recommends
an additive (see Fuel Additive) be added to your corn to eliminate these clinkers. Contact your local Feed and Seed for
availability and cost. You will need this additive if the agitator “fingers” develop an accumulation or build-up.
SPECIALCLEANING/OPERATIONAL
INSTRUCTIONS:
After cleaning or when operating the
stove, you need to make sure that
“both” clean-outs are in their proper
position. If left out or placed incor-
rectly, the combustion air is effected
greatly and the stove will not burn
properly.
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Weekly Maintenance
•
Shut down the stove as directed in the operating instructions. Allow the stove to cool to room temperature. Remove the
small clean-out slides in the lower corners of the firebox. Tap the sides of the burn chamber with a wooden stick. Do not
tap the firewall behind the burn box as it may damage the insulation. Scrape the fly ash from the clean-out chambers
toward the front of the burn chamber. Remove the fly ash from the burn chamber and replace the clean-outs.
•
•
Remove the ash pan and dump the ash into a metal container.
Cleaning of the exhaust system will depend upon the ash and debris content of your fuel. If your fuel has a high ash
content and/or significant debris in it, your exhaust system will require weekly cleaning. Cleaner fuels will allow for
monthly cleaning of the exhaust system. Remove the exhaust pipe from the back of your stove and remove any ash that
may have collected in the pipes. Replace the pipes to the stove and seal with high temperature seal tape. If you have
installed proper clean out tees you will not have to take the chimney sections apart.
REMEMBER: A clean unit burns efficiently and will remain trouble free!
SPRING CLEANING:
When the heating season is over make sure that you clean out all of the fuel in the hopper, firebox area, ash pan and firepot
area. Corn and any ash can accumulate moisture over the summer months causing the unit to rust and the fuel to mold.
It is recommended that prior to shutting down the unit in the spring, run the unit on the higher settings for a day to help clean
out the heat exchanger system, venting system and firebox area.
When the unit is cleaned out, take the venting apart, clean out the fly ash, rinse the venting out with a water hose and let dry,
take the draft blower off and clean, clean out all areas such as back heat exchanger and lubricate the auger, auger tube,
firepot area, fuel stirrer shaft and bearings and hopper area with a light oil (something like Pam cooking oil works great to
coat the inside of the unit and the moving parts). Clean the glass, doors and outer cabinet so that you are ready for the next
heating season. Use of a wet/dry vacuum makes all clean out easier and cleaner.
AUTOMATIC SAFETY FEATURES
WARNING
These automatic safety features must not be bypassed
•
•
Power Outage
During a power outage, the stove will shut down safely. It will not automatically restart when the power returns, unless
the stove is still above the proper operating temperature. (see “Lighting Instructions”).
Overheating
A high temperature switch will automatically shut down the stove if it overheats. The stove will need to be manually relit.
Allow 45 minutes before relighting.
FUEL ADDITIVE
Chicken Scratch for my Corn Burner?
Yes - Crazy as it may sound, ground Oyster Shells, (calcium carbonate) same as fed to chickens, is the ideal additive to
promote clean burning, especially when the Corn Fuel is extra high in starch. And it’s available at your local Feed and Seed.
The “average” mixture is 1/2 pound of Oyster Shells (about 2 handfuls) to 60 pound of Corn, a full hopper. IF the “fingers”
on your agitator (stirrer or rouser) have a noticeable buildup of “clinkers” or stubborn deposits, you have either a high starch
fuel OR are burning with too much air for proper combustion and are reaching the “fusion” temperature of the Potassium
and/or Starch in the Corn. You need Oyster Shells - and maybe more than a couple handfuls.
If you notice a heavy accumulation of “whitish powder” in your burn pot, reduce the amount of Oyster Shell Additive.
Remember, using this additive- as necessary - promotes efficiency (higher heat output), reduces maintenance, clinkers and
ash content.
16
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CIRCUIT BOARD FUNCTIONS
START-UP SEQUENCE OF EVENTS
Once the control panel is turned to on, a timer begins that will start, stop and continue operation of the Hearth
Focus as a preset temperature is achieved.
COMPONENT
OPERATION START
OPERATION END
Exhaust Blower
Starts Immediately
Will continue until shutdown. Shutdown will
occur when the operating temperature is
below 90 degrees.
Agitator
Auger
Three minutes after starting the agitator will Will continue intermediately, has determined
begin to turn by the “HEAT SETTING”, until shutdown
Three minutes after starting the auger will The auger will continue at the feed rate
begin to turn
specified by the “HEAT SETTING”.
NOTE: Safety switches, HI limit and vacuum
sensor, must be activated to continue proper
operation.
Room Fan
Begins when 110 degrees is reached.
Will continue to operate until the heater cools
down to below 90 degrees. This may take
several minutes up to an hour.
Automatic Shutdown
Normal Operation
If after 15 minutes, the heater has not reached Should the timer expire before the preset
the preset operating temperature, the unit will operating temperature is achieved, simply
begin to automatically shut down.
reset the stove by pressing the “ON” buttton.
If after 15 minutes the preset operating tem- Operation will continue until either the
perature of 110 degrees is achieved, normal heater’s control is to the “OFF” position, or
operation will continue.
the operating temperature falls below 90
degrees. At such time the heater will default
to the “Automatic Shut Down”.
SHUTDOWN SEQUENCE OF EVENTS
Once the Hearth Focus has reached the normal operating temperature and switched to the “OFF” position, the unit
will continue to operate on a much lower setting for 10 minutes. (Approximately half of the “1” setting). After 10
minutes the auger will slow down further and continue at this feed rate until the heater’s “LOW LIMIT SAFTEY”
sensor tells the control board it is safe to shutdown.
COMPONENT
SHUTDOWN
OPERATION END
Exhaust Blower
Unchanged operation until preset “OFF” tem- Continues until the operating temperature falls
perature is achieved.
below 90 degrees. May take several minutes
up to an hour.
Agitator
Auger
Continues at a lower sequence
Continues until the operating temperature falls
below 90 degrees.
Slows down to a “HALF SETTING” for 10 The auger will continue at the lower feed
minutes and then to a “QUARTER SETTING” rates until the operating temperature falls
for the duration of the shutdown.
below 90 degrees.
NOTE: Safety switches, HI limit and vacuum
sensor, must be activated to continue
proper operation.
Room Fan
Unchanged operation until preset “OFF” tem- Will continue to operate until the heater cools
perature is achieved.
down to below 90 degrees. This may take
several minutes up to an hour.
Automatic Shutdown
If the heater’s “HI LIMIT” sensor snaps open, It is rare that the HI LIMIT temperature is
this will cause an automatic shutdown. This reached. However, should this error occur,
will be evident by the red light above “B” on let the heater cool down for an hour then
the control board flashing. NOTE: “HI LIMIT”
errors are usually the result of operating at
the highest heat setting for long periods of
time, room fan failure or loose wire connec-
restart.
tion.
USSC
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ERROR CODES and DISPLAY INDICATORS
CAUTION: When performing any internal electrical maintenance
Moving parts inside of the cabinet may cause injury. Do not operate unit with panels removed or
open.
•
•
•
•
HOT parts. Do not operate the unit with panel open.
Risk of electric shock. Disconnect power before servicing unit.
In the event of component failure, replace with the original factory equipment.
Error
Code
Error
Descrption
Possible
Causes
Err1
The high limit temperature sensor
has tripped.
• Inadequate ventilation.
• Room fan failure.
• Exhaust Blockage.
• Electrical Open in the over temperature switch or wiring.
Err2
Furnace ran out of fuel during normal
operation.
• Hopper Empty.
• Auger output failure or jam.
• Flame of fuel quality caused fire to burn too slowly or go out.
• Electircal Open in low temperature switch or wiring.
Err3
Err4
The furnace was unable to reach the • Flame or Fuel quality caused the fire to burn too slowly or go
Room Fan On temperature within the out.
startup time.
• Auger output failure or jam Hopper empty on startup.
The power failed while the furnace was • Electrical Open in low temperature switch or wiring.
hot, and when power was restored, the • Power loss
fire was out.
• Electrical Open in low temperature switch or wiring.
Err5
Err6
Err7
TheAuger output fuse has blown.
TheAgitator output fuse has blown.
• Auger motor jammed or bad.
• Agitator motor jammed or bad.
The Draft Fan (Exhaust Fan) output fuse • Draft Fan motor jammed or bad.
has blown.
Err8
The Room Fan blower output fuse has • Room fan motor jammed or bad.
blown.
Display Indicators
Several situations or events are indicated in normal operation by blinking display indicators or segments in the display:
Flashing On Indicator: This means that the stove is in the “Start Up” state waiting for either a 3 minute timeout to begin
burning or for the stove to reach the warm temperature whichever comes first.
Flashing Off Indicator: This indicates that the stove is in the “Shutdown” state waiting for the OFF button, or for a 15
minute period after the stove was turned off, or for the stove to cool down, or for the door to be closed.
Flashing dash in Heat Range Display: This indicates that the stove is in the normal run mode and is ramping from the
current heat range setting to the target heat range setting. Once the ramp is complete, the dash will stop flashing. For
ramping from heat range 1 to 9, the default time is 12 minutes (with a 90 second ramp time).
Flashing Automatic Mode Indicator: This indicates that the stove is in normal operation and is running in the automatic
mode. However, either the Draft Fan orAuxiliary setting is manually configured.
Flashing Draft Fan Setting Indicator: This indicates that the stove is in normal operation and that the vacuum sensor
detects a loss of pressure either because the door is open or because there is a negative pressure in the room with respect
to the exhaust.
Factory Defaults
To return the control to its original factory default settings, press and hold theAUX UP andAUX DOWN buttons together for
three seconds.
18
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TROUBLE SHOOTING
Unplug stove before performing any maintenance
PROBLEM
CAUSE: Too rich air/fuel mixture
? Fire burns with a lazy, orange flame 9 Make sure glass door is shut and
9 Check inside stove and exhaust
pipes for blockage. Tap inside
walls of firebox, clean behind
lower access plates (located on
the back inside wall, next to the
firepot) clean firepot and firebox
vent holes above firebrick panel.
and/or fuel builds up in the firepot.
Glass may become dirty.
sealed tightly. If not, adjust door
handle or replace gasket.
9 Check ash dumps are in place and
sitting flat to assure a proper seal.
9 Check that exhaust fan is running
and venting properly. If not, check
connection and clean or replace.
9 Feed rate is too HI for fuel, reduce
heat setting.
9 Moisture content above 15%.
Allow fuel to dry or mix with wood
pellets.
9 Inadequate combustion air
available,
add
outside
combustion air.
(Optional kit 69FAK)
? Fire goes out or stove shuts down.
Fuel may stop feeding.
CAUSE: Firepot burns out of fuel
9 Hopper empty, refill
9 The control board diagnostics will
flash the light above Draft Fan for
a Vacuum Switch error and dis-
play a “Err1” for a Hi Limit error.
9 Auger jams. Remove auger and
clean. (Auger jams can be a prob-
lem if poor quality fuel is used. Or
excessive fines (sawdust, corn
cobs or husk) are found in hopper.
Auger jams are evident when the
auger turns but no fuel is delivered.
? Fire goes out or stove shuts down.
Fuel may stop feeding.
CAUSE: Auger stops turning
9 Auger has come loose. Check to
see if auger motor is turning and
auger is not. NOTE:Auger is held
to the auger motor by a coupler
that is fastened to the auger motor.
Simply slide the auger into the
auger housing and rotate until it
fits into the coupler.
9 Hi limit sensor. Evident when
stove is extremely hot and the
PCB displays an “Err1”. Allow
stove to cool for 1 hour and
restart.
9 Vacuum switch tripped. Caused
by exhaust blower not running
or venting blocked. Check
blower, clean or replace. Clean
venting of blockage.
9 Low limit sensor. If the operating
temperature is too low the stove
will shut down.
9 Auger motor not operating.
Inspect connection and replace
if necessary.
NOTE: Negative pressure in a home is a serious issue. All Hearth Focus appliances should be
installed with the optional fresh air kit (69FAK).
USSC
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WIRING DIAGRAM
20
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REPAIR PARTS DIAGRAM-6039HF
USSC
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REPAIR PARTS LIST-6039HF
KEY
1
2
PART #
DESCRIPTION
Feed Door Assembly
Latch, Door
QTY.
1
1
4
69516
25080MB
25523
3
Leg, Cast Iron
4
5
6
7
8
9
69478MB
69486MB
25412MB
25413MB
25448
Ash Pan Weldment (6039)
Left Side Weldment
Cabinet Side, Right
Cabinet Back
Support Frame (Back/Left)
Support Frame (Back/Right)
Top Weldment
Lid Weldment
Latch, Hopper Lid
Hopper Assembly
Insulation, Blanket
Gasket, Exhaust Duct
Exhaust Duct Weldment
Gasket, Exhaust Blower
Blower, Exhaust
Auger Motor
Washer, Rubber
Roll Pin, 1/8” dia X 7/8”
Coupling, Shaft
Gasket, Distribution Blower
Blower, Distribution
Circuit Board
Motor, Drive
Gasket, Agitator Bracket
Ring, Retaining
Bracket, Agitator/Bushing
Bushing, Agitator
Shaft, Agitator Drive
Roll Pin
Retainer, Agitator Motor
Low Limit Switch (F110 Thermodisc- 60T12)
Auger Safety Switch (F250 Thermodisc- 60T11)
Bracket, Pressure Switch
Switch, Pressure
Nipple, Auger
Hose, Silicone
Louver Assembly
Ceramic Brick
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
25447
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
69477MB
69503MB
891125
69499
88116
88114
69498
88100
80473
80456
83511
83533
891136
88106
80472
80486
80488
88111
83534
25422
891132
86620
83901
25427
80381
80455
25443
80478
1
1
1
89586
891121
69497MB
891139
25524
891054
891297
891059
83529
80462
80461
88121
88122
891224
891223
891225
891226
25425MB
891331
891135
891137
5 Inches
1
1
2
1
1
1
1
1
1
1
1
2
2
2
1
2
1
1
1
Cleanout, Ash
Auger
Burnpot
Agitator
Hairpin
Recepticle, 3 Prong
Power Supply Cord
Insulation Top - Agitator
Insulation Bottom - Agitator
Cleanout Guide
Cleanout, Ash (Lower)
Cleanout/Damper Guide
Weldment, Damper
Rail, Ash Pan Guide
Spring Handle, Brushed Nickel
Spring Handle (Feed Door), Brushed Nickel
Handle, Brushed Nickel
22
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Parts Diagrams and Parts Lists
7
10
6
5
4
9
1
3
11
8
2
Key
Part No.
25491
25492
83506
88112
88087
891131
Descritption
Feed Door
Handle, Door
Roll Pin, 3/8 x 1-1/4
Gasket, 1/2” Sq. Rope
Gasket, Glass (1 x 3/16)
Glass Ceramic
Qty.
1
1
Key
7
8
9
10
11
Part No.
83278
25465
25464
83202
Descritption
#10 Flat Washer
Retainer, Bottom Glass
Retainer, Top Glass
Machine Screw
Qty.
1
2
3
4
5
6
4
1
1
4
1
1
5 ft
4 ft
1
891135
Handle, Spring (Parts Bag)
Louver Assembly (Part No.: 69540)
Key
Part No.
891334
83531
83532
83295
25444
25444
Descritption
Louver
Screw, 10-24UNC x 2” long
Spacer
Nut, 10-24UNC
Bracket, Louver
Bracket, Louver
Qty.
1
2
3
4
5
6
3
2
4
2
1
1
2
3
1
5
6
4
USSC
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HOW TO ORDER REPAIR PARTS
THIS MANUAL WILL HELP YOU OBTAIN EFFICIENT, DEPEND-
ABLE SERVICE FROM YOUR HEARTH FOCUS, AND ENABLE
YOU TO ORDER REPAIR PARTS CORRECTLY.
KEEP THIS MANUAL IN A SAFE PLACE FOR FUTURE REFER-
ENCE.
WHEN WRITING, ALWAYS GIVE THE FULL MODEL NUMBER
WHICH IS ON THE NAMEPLATE ATTACHED TO THE HEATER.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE
FOLLOWING INFORMATION AS SHOWN IN THIS LIST:
1. THE PART NUMBER
2. THE PART DESCRIPTION
3. THE MODEL NUMBER: 6039HF
4. THE SERIAL NUMBER:____________________
United States Stove Company
227 Industrial Park Road
P.O. Box 151
South Pittsburg, TN 37380
(423) 837-2100
WWW.USSTOVE.COM
USSC
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