United States Stove Company 5660 Installation And Operating Manual
Installation and Operating Manual
Model 5660 (I)
Tested &
Listed by
OMNI- Test Laboratories, Inc.
Report #:
215-S-32-4 and 215-S-33-4
Portland
Oregon USA
SAFETY NOTICE
Please read this entire manual before installation and use of this pellet fuel-burning room heater. Failure to follow instructions
may result in property damage, bodily injury, or even death.
If your heater is not properly installed, a house re may result. For everyone’s safety, follow all Installation and Operating
Directions. Never use makeshift compromises during the installation of this appliance.
Contact your local building or re ofcials about restrictions and installation inspection requirements in your area.
These Pellet Stove Room Heaters have been designed for use in the US and Canada and are suitable for mobile homes.
The French version of this manual is available for download at www.usstove.com
La version française est disponible pour téléchargement à partir du site US Stove: www.usstove.com
Save These Instructions.
This unit is not intended to be used as a primary source of heat.
United States Stove Company • 227 Industrial Park Road, South Pittsburg, TN 37380 • Phone #: (800) 750-2723
1
Part No.: 851901F
TABLE OF CONTENTS
Topic Page(s)
Introduction ....................................................................................................................................................3
Safety Information .........................................................................................................................................4
Specications ............................................................................................................................................... 6
Dimensions ................................................................................................................................................6-7
Operating Instructions ................................................................................................................................8-9
Thermostat Installation ................................................................................................................................10
Clearances to Combustibles ....................................................................................................................... 11
Installing Your Room Heater ..................................................................................................................12-19
Mobile Home Installations ..........................................................................................................................20
Insert Pellet Stove Installation ................................................................................................................21-24
Vent Termination Locations ........................................................................................................................25
Maintenance ..........................................................................................................................................26-29
Troubleshooting .....................................................................................................................................30-31
Wiring Diagram ...........................................................................................................................................32
Replacement Parts List ..............................................................................................................................33
Warranty Card .............................................................................................................................................35
2
Introduction
The entire family of United States Stove Company thanks you for purchasing your new pellet burning room heater. At U.S.
Stove, we build all of our products with a hands-on approach to detail and quality. Our old world team of Craftsmen take
great pride in their superior workmanship to ensure you have years of trouble free use of your pellet heater.
U.S. Stove Pellet Burning Room Heaters have been tested and listed for installation in residential, mobile home and alcove
installations. U.S. Stove Pellet Burning Room Heaters are available in free standing pedestal and replace insert versions.
U.S. Stove Pellet Burning Room Heaters have been certied by OMNI-Test Laboritories to:
ASTM E1509-04, ULC/ORD-C1482-M90, ULC-S627-00, & ULC-S628-00
The performance of your Pellet Stove Room Heater can be affected by the type of pellet fuel you choose to burn in it. It is
important to use only pellet fuel that is dry and free from dirt or other impurities. The Pellet Fuel Industry has established
standards for wood pellet manufacturers. We recommend that pellet fuel used in all U.S. Stove Pellet Burning Room
Heaters meet or exceed the following specications:
Fines (ne particles): Maximum through a 1/8” screen
Bulk Density: Minimum 40 lbs per cubic foot
Size: Maximum 3/8” Diameter by 1-1/2” length
Ash Content: 1% Maximum (Premium grade)
3% Maximum (Standard grade)
Moisture Content: 8% Maximum
Heat Content: Minimum 8,200 btu’s per hour
It is important to note that the ash content of the fuel and frequency of operation will determine the frequency of which you
will be required to clean your Pellet Stove. A high ash fuel may result in daily cleaning, while a low ash content fuel may
result in less frequent cleaning.
Occasionally, impurities in the fuel will cause a hard mass build up in the burn pot of your Pellet Stove. Impurities, such as
silica, can virtually form little glass balls when subjected to the high heat generated in the burn pot. When allowed to collect,
a hard base build up may block air ow through the burn pot, which will signicantly affect the performance and efciency of
your Pellet Stove. It is a good idea to check the burn pot for any hard mass buildup or other blockage on a daily basis, and
if necessary let the burn pot cool and then clean the burn pot.
U.S. Stove Company realizes that it cannot control the quality of pellet fuel you choose to use in your Pellet heater;
U.S. Stove assumes no responsibility for that choice.
CAUTION: BE SURE TO STORE PELLET FUEL A MINIMUM OF 3 FEET (914.5MM) AWAY FROM THE PELLET HEATER.
RADIANT HEAT CAN IGNITE THE FUEL.
Please note that the rating label is located on the inside of the hopper lid on freestanding models and on the back
side of the ash pan cover for insert models.
3
SAFETY INFORMATION
Be sure to read the entire owner’s manual prior to installing and operating this Pellet heater. Failure to follow these instructions
could result in re, property damage, bodily injury or even death.
This stove’s exhaust system works with negative combustion chamber pressure and a slight positive chimney pressure. It is
extremely important to ensure that the exhaust system is sealed and airtight. The ash pan and viewing door must be securely
fastened in order for the unit to be airtight. This Pellet heater will not operate using natural draft or without a power source for
the blowers.
CAUTION: Burning fuel creates carbon monoxide and can be hazardous to your health if not properly vented.
CAUTION: A working smoke detector must be installed in the same room as this product.
15 feet (4.57 m) from the appliance in order to prevent undue triggering of the detector when reloading.
The use of grates or other methods of supporting the fuel is not permitted.
This Pellet heater is designed to burn pellet wood fuel only. Do not use any other type of fuel; doing so will void any warranties
stated in this manual.
THE USE OF SOLID WOOD FUEL IS PROHIBITED BY LAW.
This Pellet heater is designed for residential installation according to current national and local building codes. It is also
approved as a mobile home heater, which requires connection to an outside combustion air source. When installing a
Pellet Stove in a mobile home, it must be electrically grounded to the steel chassis of the home and bolted to the oor.
Make sure that structural integrity of the home is maintained.
Make sure that structural integrity of the home is maintained when passing vent pipes through walls, ceilings and roofs.
It is recommended that the exhaust vent be cleaned bi-annually or after every two tons of pellets.
Soot or creosote may accumulate when the pellet heater is operated under incorrect conditions, such as an extremely rich
burn (black tipped lazy orange ames). Do not operate the stove if the ame becomes dark or sooty or if the burn pot overlls
with pellets. Turn the stove off and call your dealer.
The grounded electrical cord must be connected to a standard 120 volt, 60 hertz electrical outlet. Ensure that the electrical
cord is not trapped under the appliance and that it is clear of any hot surfaces or sharp edges.
The ash pan and viewing door must be locked securely for proper and safe operation.
DO NOT PLACE UNBURNED OR NEW PELLET FUEL IN THE ASH PAN. A re in the ash pan may occur.
It must be installed at least
Do not operate your pellet heater if you smell smoke coming from it. Turn it off, monitor it and call your dealer.
Repair and servicing of your U.S. Stove Pellet Burning Room Heater may only be done by a qualied technician.
Disconnect the power cord before performing any maintenance or repair.
NOTE: Turning the Pellet Stove Room Heater to "off" does not disconnect power from the unit.
The Pellet Stove Room Heater will not operate during a power outage. If a power outage or tripped circuit occurs, check for
smoke spillage and open windows or doors to ventilate as necessary.
CAUTION DO NOT CONNECT TO OR USE IN CONJUNCTION WITH ANY AIR DISTRIBUTION DUCTWORK UNLESS
SPECIFICALLY APPROVED FOR SUCH INSTALLATIONS.
Know the symptoms of carbon monoxide poisoning: headache, dizziness, weakness, nausea, vomiting, sleepiness, and
confusion. Carbon monoxide reduces the blood’s ability to carry oxygen. Low blood oxygen levels can result in loss of
consciousness and death.
See a doctor if you or others develop cold or u-like symptoms while cooking or in the vicinity of this appliance. Carbon
monoxide poisoning, which can easily be mistaken for a cold or ue, is often detected too late.
Alcohol consumption and drug use increase the effects of carbon monoxide poisoning.
Carbon monoxide is especially toxic to mother and child during pregnancy, infants, the elderly, smokers, and people with
blood or circulatory system problems, such as anemia, or heart disease.
4
SAFETY INFORMATION - continued
Keep foreign objects out of the hopper.
Contact your local building ofcials to obtain a permit and information on any installation restrictions or inspection requirements in your area.
Be sure to notify your insurance company of your new U.S. Stove Pellet Burning Room Heater.
Allow the Pellet Stove Room Heater to cool before performing any maintenance.
Ashes must be disposed of in a steel container with a tight lid and placed on a noncombustible surface well away from your
home.
Check the venting system, at least twice a year, for creosote build-up.
Keep all door/lid seals and gaskets in good condition.
Adequate ventilation air is required to operate this heater. During operation, the heater draws air for combustion which can
be assisted by the installation of outside combustion air inlets. However, certain weather conditions such as icing or use of
kitchen exhaust fans may impact and reduce the effectiveness of vents. It is important to note that room air starvation will
negatively impact the operation of the heater.
If power outages with battery backup or room air starvation occurs during operation of heater, smoke in the house may
result. This may trigger smoke detectors if they are installed.
CAUTION:
DO NOT CONNECT TO ANY AIR DISTRIBUTION DUCT OR SYSTEM.
DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE. NEVER USE GASOLINE, GASOLINE TYPE LANTERN
FUEL, KEROSENE, CHARCOAL LIGHTER FLUID, OR SIMILAR LIQUIDS TO START OR FRESHEN UP A FIRE IN THE
HEATER. KEEP ALL SUCH LIQUIDS WELL AWAY FROM THE HEATER WHILE IT IS IN USE. USING THESE CHEMICALS COULD CAUSE BODILY HARM, HEATER DAMAGE AND WILL VOID THE WARRANTY.
DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS SUCH AS GASOLINE, NAPHTHA OR ENGINE OIL.
HOT WHILE IN OPERATION. KEEP CHILDREN, CLOTHING AND FURNITURE AWAY FROM THE HEATER. CONTACT
MAY CAUSE SKIN BURNS. YOUNG CHILDREN SHOULD BE SUPERVISED WHEN THEY ARE IN THE SAME ROOM
AS THE STOVE.
DO NOT ATTEMPT TO OPERATE THE HEAT EXCHANGER VENT TUBE CLEANER WHILE THE PELLET
STOVE IS IN OPERATION OR COOLING DOWN; WAIT UNTIL PELLET STOVE HAS COOLED COMPLETELY
BEFORE PERFORMING THIS PROCEDURE.
ENSURE THAT PEOPLE ARE AWARE THAT THE
VERY HOT DURING PELLET STOVE OPERATION AND CAN BE A BURN HAZARD.
OTHER RADIANT SURFACES OF THE STOVE WILL BE HOT DURING OPERATION AND CAN BE A BURN HAZARD.
A working smoke detector must be installed in the same room as this product.
It must be installed at least 15 feet (4,57 m) from the appliance in order to prevent undue triggering of the detector when reloading.
HEAT EXCHANGER VENT
TUBE CLEANER KNOB WILL BE
5
SPECIFICATIONS
Heating Specications:
Burn Rate: *43,900 btu’s per hour or 5.1 lbs. of fuel per hour
Hopper Capacity: 55 lbs.
*Dependent upon quality and heating value of pellet fuel.
DIMENSIONS
Figure 1
30.50 in
[774.6 mm]
20.50 in
[520.8 mm]
24.25 in
[615.9 mm]
6.00 in
[152.4 mm]
26.19 in
[665.2 mm]
13.70 in
[348 mm]
6
DIMENSIONS - continued
The minimum installation dimensions, of the insert opening, are:
32” (813mm) wide x 22-3/4” (578mm) high x 12-1/4” (311mm) deep.
Figure 2
7
CLEARANCES TO COMBUSTIBLES
INSTALL ALL VENTS AT CLEARANCES SPECIFIED BY THE VENT MANUFACTURER!
When your Pellet Stove Room Heater is being installed on a combustible oor it is mandatory that a 1/2” (13mm) thick non-
combustible hearth pad be installed under the heater. The non-combustible hearth pad must extend at least 6” beyond the
fuel loading and ash removal openings and at least the depth of the heater plus 6 inches (152mm) out in front of the heater.
The oor protector must extend 2” (51mm) beyond each side of the exhaust vent. This applies to both freestanding heaters
and insert heaters.
BACK WALL
2”
2”
Figure 5
6”
USA 6”
CANADA 8”
FLOOR PROTECTION
USA 6”
CANADA 18”
USA 6”
CANADA 8”
Alcove Dimensions
FLOOR
PROTECTION
USA 6”
CANADA 18”
Figure 6
36”
8
35”
40”
INSTALLING YOUR ROOM HEATER
You have already made the important decision of choosing your U.S. Stove Pellet Burning Room Heater; now your next step
is to determine where to install your new pellet stove heater. To get the most efcient use of re-circulated heat, you should
consider a room that is centrally located within your home. Choose a room that is large and open.
It is Extremely Important to maintain proper clearances from any combustible surfaces or materials in the room where your
heater will be located. You can nd proper clearance measurements on page 12 of this manual and on the rating label of
your pellet stove.
The pellet stove can be vented through an exterior wall or into an existing masonry or metal chimney. The chimney must
be lined if it is over 6” (150mm) in diameter or if it has a cross-sectional area of over 28 square inches (711mm2). Venting
can pass through the ceiling and roof if approved pipe is used. Where passage through a wall, or partition of combustible
construction is desired, the installation must conform to CAN/CSA-B365.
DO NOT OBTAIN COMBUSTION AIR FROM THE ATTIC, GARAGE OR ANY OTHER UNVENTILATED AREA. YOU MAY
OBTAIN COMBUSTION AIR FROM A VENTILATED CRAWL SPACE.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER HEATER, FURNACE OR APPLIANCE.
INSTALL VENT AT CLEARANCES SPECIFIED BY THE VENT MANUFACTURER.
ONLY USE APPROVED MATERIAL FOR INSTALLATION, FAILURE TO DO SO MAY RESULT IN PROPERTY DAMAGE,
BODILY INJURY, OR EVEN DEATH.
This appliance is certied for use with listed 3 inch or 4 inch “PL” or “L” pellet venting products as well as Selkirk’s Direct-
Temp Vent system for pellet burning appliances. The use of other components other than stated herein could cause bodily
harm, heater damage, and void your warranty.
HORIZONTAL EXHAUST VENT INSTALLATION
1. Locate your pellet stove in a location which meets the requirements of this manual, but in an area where it does not
interfere with the house framing, wiring, etc.
2. Install a non-combustible hearth pad underneath the pellet stove. This pad should extend at least 6” (152mm) in front
of the unit.
3. Place the pellet stove approximately 15” (381mm) away from the interior wall.
4. Locate the center of the exhaust pipe of your unit. This point should then be extended to the interior wall of your house.
Once you have located the center point, on the interior wall, cut a 7” (175mm) diameter hole through the wall.
5. The next step is to install the wall thimble, refer to the instructions which come with the wall thimble for this step.
6. Install the appropriate length of exhaust vent pipe into the wall thimble. See steps 11 and 12 when determining the correct length of exhaust vent to use.
7. Outside Fresh Air is Mandatory when installing this pellet stove room heater in airtight homes and mobile
homes. Be sure that the outside air vent has an approved cap on it to prevent rodents from entering. Be sure to install
in location that won’t become blocked with snow, etc.
8. The air intake pipe is equipped with a buttery valve that is preset to maximum air intake. For optimum operating efciency you may calibrate the buttery valve to provide less intake air. (See Figure 7) Caution: Too much restriction
on the intake air will cause dirtier burn, therefore, will require more frequent cleaning.
9. Connect the exhaust vent pipe to the exhaust outlet of your pellet stove.
10. Secure all vent joint connections with 3 screws. Seal the exhaust vent joint connections with high temperature silicone
sealant.
11. Push the unit straight back to the interior wall, being sure to maintain the minimum clearances to combustibles 6”
(152mm) to the back of the unit. Seal the annular space of the wall thimble and around the vent pipe with high temperature silicone sealant.
12. The exhaust vent pipe must extend at least 12” (300mm) out past the exterior wall. Seal the annular space of the wall
thimble and around the vent pipe with high temperature silicone sealant.
13. Install an approved horizontal termination cap or if necessary install a 90° elbow and appropriate length of vertical venting. An approved vertical vent cap is recommended.
9
INSTALLING YOUR ROOM HEATER - continued
HORIZONTAL EXHAUST VENT INSTALLATION
Listed Horizontal Cap
Exhaust Vent
Wall Thimble Mfg.
by Pellet Vent Mfg.
Floor Protector
6” (152mm) Clearance
Front
Figure 8
Combustion Air Intake
with approved cap
6” (152mm)
Clearance to
Combustibles
6” (152 mm)
Non-Combustible
Floor Protection
Figure 9
6” (152 mm) Clearance
Wall to Back of Unit
Wall Thimble
Exhaust Vent
45 Elbow
or Listed Termination
Rodent Mesh Cap
Combustion Air
Intake with
approved cap
12” (300mm)
Existing Floor
(Combustible)
10
INSTALLING YOUR ROOM HEATER - continued
FREESTANDING INTERIOR VERTICAL INSTALLATION
1. Locate your Pellet Stove Room Heater in a location which meets the requirements of this manual, but in an area where
it does not interfere with the house framing, wiring, etc.
2. Install a non-combustible hearth pad underneath the pellet stove. This pad should extend at least 6” (152mm) in front
of the unit.
3. Place your Pellet Stove Room Heater on the hearth pad and locate the unit in a manner that will leave the exhaust vent
with a minimum of 3” (75mm) clearance to any combustible wall.
4. When installing the air intake, locate the center of the combustion air intake pipe at the back of your unit. Line up the
center with the same spot on your exterior wall and cut a 2-1/2” (64mm) diameter hole through the wall.
5. Install the combustion air intake pipe.
6. Secure all vent joint connections with 3 screws. Seal the exhaust vent joint connections with high temperature silicone
sealant.
7. Install a tee, with a cleanout, on the exhaust pipe found at the rear of your unit.
8. Install approved vent upward through the ceiling. When you pass through the combustible framing ensure that the ap-
propriate ceiling re stop is used. You must maintain a minimum 3” (75mm) clearance to combustibles and keep any
insulation away from the exhaust vent.
9. Extend the exhaust vent through the roof ashing and ensure that the vertical cap is approximately 36” (900mm) above
the roof.
6” (150 mm)
3” (75 mm) Clearance
to Combustibles
Use Ceiling Firestop
Use Ceiling Firestop
3” (75mm) Clearance
3” (75mm) Clearance
to Combustibles
to Combustibles
Flashing
3” (75 mm)
Listed Termination
36” (900 mm)
Tee with
Cleanout
6” (150 mm)
Figure 10
Non-Combustible
Floor Protection
11
Existing Combustible
Floor
Combustion Air
Intake with approved cap
INSTALLING YOUR ROOM HEATER - continued
FREESTANDING EXTERIOR VERTICAL INSTALLATION
1. Locate your Pellet Stove Room Heater in a location which meets the requirements of this manual, but in an area where
it does not interfere with the house framing, wiring, etc.
2. Install a non-combustible hearth pad underneath the pellet stove. This pad should extend at least 6” (152mm) in front
of the unit.
3. Place your Pellet Stove Room Heater on the hearth pad and locate the unit in a manner that will leave the exhaust vent
with a minimum of 3” (75mm) clearance to any combustible wall.
4. If installing the optional air intake, locate the center of the combustion air intake pipe at the back of your unit. Line up the
center with the same spot on your exterior wall and cut a 2-1/2” (64mm) diameter hole through the wall.
5. Secure all vent joint connections with 3 screws. Seal the exhaust vent joint connections with high temperature silicone
sealant.
6. Locate the center of the exhaust pipe, at the back of the unit. Line up the center with the same spot on the exterior wall
a cut a 7” (178mm) diameter hole through the wall.
7. Install the wall thimble; (refer to the instructions which come with the wall thimble).
8. Install an approved exhaust vent through the wall; be sure to make sure that 3” (75mm) clearances to combustibles are
maintained.
9. Secure all vent joint connections with 3 screws. Seal the exhaust vent joint connections with high temperature silicone
sealant.
10. Install a Tee with a cleanout on the end of the exhaust pipe and then install approved venting upward from there. Be
sure to install support brackets every 5’ (1525cm) to keep the venting straight and secure.
11. Extend the exhaust vent through the roof ashing and ensure that the vertical cap is approximately 36” (900mm) above
the roof.
6” (150 mm)
Clearance
Wall Thimble
Listed Termination
Figure 11
Flashing
36” (900 mm)
3” (75 mm)
Clearance
Tee
w/ Cleanout
6” (150mm)
Non-Combustible
Floor Protection
12
Existing Combustible
Floor
Support Bracket
Combustion Air Intake
with approved cap
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