United States Stove 5501S Operation and maintenance manual

* All Pictures In This Manual Are For Illustrative Purposes Only. Actual Product May Vary.
© 2021 United States Stove Company, 227 Industrial Park Rd., South Pittsburg, TN 37380 Ph. 800-750-2723
THIS MANUAL IS SUBJECT TO CHANGE WITHOUT NOTICE.
Owner’s Instruction and Operation Manual
U.S. Environmental Protection Agency
Certified to comply with 2020 particulate
emissions standards.
SAFETY NOTICE: If this heater is not properly installed, a house fire may result. For
your safety, follow the installation instructions. Never use make-shift compromises
during the installation of this heater. Contact local building or fire ocials about
permits, restrictions and installation requirements in your area. NEVER OPERATE
THIS PRODUCT WHILE UNATTENDED.
CAUTION! Please read this entire manual before you install or use your new room
heater. Failure to follow instructions may result in property damage, bodily injury, or
even death. Improper Installation Will Void Your Warranty!
Save These Instructions In A Safe Place For Future Reference.
CALIFORNIAPROPOSITION65WARNING:
This product can expose you to chemicals including carbon
monoxide,whichisknowntotheState ofCaliforniatocause
cancer, birth defects, and/or other reproductive harm. For
more information, go to www.P65warnings.ca.gov
852473K-0204K
5501S
R
Report Number: F19-549
Certified to ASTM E1509-12 (2017)
and Certified to ULC-S627-00-REV1
Mobile Home Approved
Model Number:

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© 2021 United States Stove Company
INTRODUCTION
Your pellet stove has been approved for installation in the USA and Canada. It may also be installed in a manufactured or
mobile home. Your stove is Certified to ASTM E1509-12 (2017)and Certified to ULC S627-00. This manual describes
the installation and operation of the U.S. Stove, 5501S wood heater. This heater meets the 2020 U.S. Environmental
Protection Agency’s crib wood emission limits for wood heaters sold after May 15, 2020. Under specific test conditions
this heater has been shown to deliver heat at rates ranging from 13,281 to 27,492 Btu/hr. This heater achieved a
particulate emissions rate of 1.0 g/hr when tested to method ASTM E2779-10 (*and an eciency of 69%).
WARNING:
IT IS AGAINST FEDERAL REGULATIONS TO OPERATE THIS WOOD HEATER IN A MANNER INCONSISTENT
WITH THE OPERATING INSTRUCTIONS IN THE OWNER’S MANUAL.
Heating Specifications
Fuel Burn Rate* (lowest setting) 1.5 lbs./hr. (0.7 kg/hr)
* Pellet size may eect the actual rate of fuel feed
and burn times. Fuel feed rates may vary by as much
as 20%. Use PFI listed fuel for best results.
Burn Time (lowest setting) 13 hrs. (approximate)
Hopper Capacity 20 lbs. (9 kg)
Flue Size 3” or 4”
Electrical Specifications
Electrical Rating 110-120 Volts AC, 60 HZ, 3.0 Amps
Watts (operational) 125
Watts (igniter running) 310
Dimensions
Overall: Height x Width X Depth 30.125” (766 mm) x 18.5” (470 mm) x 20.375” (518 mm)
Weight 128lbs
For Customer Service, please call:
1-800-750-2723 Ext 5050 or;
Text to 423-301-5624 or;
Email us at:
[e-mail]
Note: Register your product online at
www.usstove.com or download the free
app today. This app is available only
on the App Store for iPhone and iPad.
Search US Stove. Save your receipt with
your records for any claims.

© 2021 United States Stove Company
3
INSTALLATION CHECKLIST
Your Wood Stove should be installed by a qualified installer only. An NFI qualified Installer can be found at www.
nficertified.org/public/find-an-nfi-pro/
CUSTOMER SERVICE
1-800-750-2723 ext 5050
Text to 423-301-5624
Email to: [e-mail]
COMMISSIONING CHECKLIST
This Checklist is to be completed in full by the qualified person who installs this unit. Keep this page for future reference.
Failure to install and commission according to the manufacturer’s instructions and complete this checklist will
invalidate the warranty.
Please Print
Customer Name: Telephone Number:
Address:
Model:
Serial Number:
Installation Company Name: Phone Number:
Installation Technician’s Name: License Number:
DESCRIPTION OF WORK
Location of installed appliance: __________________________________________________________________________________
Venting System: New Venting System Yes No If yes, Brand____________________________________________
If no, Date of inspection of existing venting system: _______________________________________________________________
COMMISSIONING
Confirm Hearth Pad Installation as per Installation Instructions...................................................................................................
Confirm proper placement of internal parts..........................................................................................................................................
Check soundness of door gasket and door seals .................................................................................................................................
Confirm clearances to combustibles as per installation instructions in this manual ..............................................................
Check the operations of the air controls.................................................................................................................................................
Confirm the venting system is secure and sealed...............................................................................................................................
Confirm the stove starts and operates properly ..................................................................................................................................
Check to ensure a CO alarm is installed as per local building codes and is functional............................................................
Explain the safe operation, proper fuel usage, cleaning, and routine maintenance requirements.......................................
DeclarationofCompletion:As thequalifiedpersonresponsibleforthework describedabove,Iconfirm thattheappliance
as associated work has been installed as per manufacturer’s instructions and following any applicable building and
installation codes.
Signed: ______________________________________ Print Name: __________________________________Date: ______________
Home Owner: RETAIN THIS INFORMATION FOR FUTURE REFERENCE

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© 2021 United States Stove Company
ASSEMBLY INSTRUCTIONS
FOR CUSTOMER SERVICE CALL: 800-750-2723 EXT 5050
1. Pull the factory installed wires out of the top of the
stove. There will be two wire harnesses, as shown.
2. Unpack the top mount controls and ensure that the
wiring harness shown is attached securely.
3. Connect the factory installed wiring harnesses to the
control panel as shown.
4. Secure the control panel to the top of the stove with
two sheet metal screws.

© 2021 United States Stove Company
5
INSTALLATION
SAFETY NOTICE
• IF THIS STOVE IS NOT PROPERLY INSTALLED,
A HOUSE FIRE MAY RESULT. TO REDUCE THE
RISK OF FIRE, FOLLOW THE INSTALLATION
INSTRUCTIONS.
• CONTACTYOURLOCALBUILDINGOFFICIALSTO
OBTAIN A PERMIT AND INFORMATION ON ANY
ADDITIONALINSTALLATION RESTRICTIONSOR
INSPECTION REQUIREMENTS IN YOUR AREA.
• DO NOT PLACE CLOTHING OR OTHER
FLAMMABLE ITEMS ON OR NEAR THIS STOVE.
• NEVER USE GASOLINE, GASOLINE-TYPE
LANTERN FUEL, KEROSENE, CHARCOAL
LIGHTERFLUID,OR SIMILAR LIQUIDS TOSTART
OR ’FRESHEN UP’ A FIRE IN THIS STOVE. KEEP
ALL SUCH LIQUIDS WELL AWAY FROM THE
STOVE WHILE IT IS IN USE.
• THIS APPLIANCE IS A FREESTANDING HEATER.
IT IS NOT INTENDED TO BE ATTACHED TO ANY
TYPEOFDUCTING.ITISNOTAFURNACE.DONOT
CONNECTTHISUNITTOANYAIRDISTRIBUTION
DUCT OR SYSTEM. THIS APPLIANCE IS NOT
INTENDED FOR COMMERCIAL USE.
• INSTALL VENT AT CLEARANCES SPECIFIED BY
THE VENT MANUFACTURER.
• DO NOT INSTALL A FLUE DAMPER IN THE
EXHAUST VENTING SYSTEM OF THIS UNIT.
• YOUR STOVE REQUIRES PERIODIC
MAINTENANCE AND CLEANING (SEE
”MAINTENANCE”). FAILURE TO MAINTAIN
YOUR STOVE MAY LEAD TO IMPROPER AND/OR
UNSAFE OPERATION.
• A POWER SURGE PROTECTOR IS REQUIRED.
THIS UNIT MUST BE PLUGGED INTO A 110 -
120V, 60 HZ GROUNDED ELECTRICAL OUTLET.
DO NOT USE AN ADAPTER PLUG OR SEVER
THE GROUNDING PLUG. DO NOT ROUTE THE
ELECTRICAL CORD UNDERNEATH, IN FRONT
OF, OR OVER THE HEATER. DO NOT ROUTE THE
CORD IN FOOT TRAFFIC AREAS OR PINCH THE
CORD UNDER FURNITURE.
CAUTION:
BURNING FUEL CREATES CARBON MONOXIDE
AND CAN BE HAZARDOUS TO YOUR HEALTH IF
NOT PROPERLY VENTED.
ATTENTION:
• A WORKING SMOKE DETECTOR MUST BE
INSTALLED IN THE SAME ROOM AS THIS
PRODUCT.
• INSTALL A SMOKE DETECTOR ON EACH FLOOR
OF YOUR HOME; INCASE OF ACCIDENTAL FIRE
FROM ANY CAUSE IT CAN PROVIDE TIME FOR
ESCAPE.
• THESMOKEDETECTORMUSTBEINSTALLEDAT
LEAST 15 FEET (4,57 M) FROM THE APPLIANCE
IN ORDER TO PREVENT UNDUE TRIGGERING OF
THE DETECTOR WHEN RELOADING.
CAUTION:
• USE OF OUTSIDE AIR IS NOT REQUIRED FOR
THIS UNIT.
• DO NOT UNPLUG THE STOVE IF YOU SUSPECT
A MALFUNCTION. TURN THE ON/OFF SWITCH
TO ”OFF’ AND CONTACT CUSTOMER SERVICE.
• THE HEATER WILL NOT OPERATE DURING A
POWER OUTAGE. IF A POWER OUTAGE DOES
OCCUR, CHECK THE HEATER FOR SMOKE
SPILLAGE AND OPEN A WINDOW IF ANY
SMOKE SPILLS INTO THE ROOM.
• NEVER BLOCK FREE AIRFLOW THROUGH THE
OPEN VENTS OF THE UNIT.
US Stove highly recommends your stove be installed by a
qualified NFI (US) or WETT (Canada) technician. To find
the nearest qualified installer, go to:
https://nficertified.org,
https://www.wettinc.ca/

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© 2021 United States Stove Company
IMPROPER INSTALLATION
The use of other components other than stated herein
could cause bodily harm, heater damage, and void your
warranty. The manufacturer will not be held responsible
for damage caused by the malfunction of a stove due to
improper venting or installation.
FLOOR PROTECTION
This heater must have a non-combustible floor protector
(UL1618 ember protection) installed beneath it if the
floor is of combustible material.
US - Floor protector should be UL listed or equal too,
needs to extend 6” to the front, 6” to each side, 1” to the
rear of the unit. Under and 2” beyond each side of the
cleanout tee if an interior vertical installation.
Canada - Floor protector should comply with CAN/ULC
standards. Needs to extend 18” to the front, 8” beyond
each side of the unit.
A Back to Stove U.S.A 1” 26 mm
CAN 8” 204 mm
B Side to Stove U.S.A 6” 153 mm
CAN 8” 204 mm
C Front to Stove U.S.A 6” 153 mm
CAN 8” 204 mm
D Back to Flue 2” 51 mm
CLEARANCES
Yourpellet stovehasbeentestedandlistedforinstallation
in residential, mobile home in accordance with the
clearances given below. For safety reasons, please adhere
to the installation clearances and restrictions. Any
reduction in clearance to combustibles may only be done
by means approved by a regulatory authority.
E Side Wall to Stove 10” 254 mm
F Side Wall to Vent Pipe 11.5” 292 mm
G Back Wall to Stove 11.88” 302 mm
H Back Wall to Vent Pipe 3” 76 mm
J Ceiling to Floor 84” 2134 mm
K Ceiling to Stove 53.88” 1434 mm
L Side Wall to Stove 7.5” 191 mm
M Side Wall to Vent Pipe 11.25” 286 mm
N Back Wall to Vent Pipe 3” 73 mm
INSTALLATION
FOR CUSTOMER SERVICE CALL: 8007502723 EXT 5050

© 2021 United States Stove Company
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OUTSIDE AIR SUPPLY (OPTIONAL, UNLESS
INSTALLING IN A MOBILE HOME)
Depending on your location and home construction,
outside air may be necessary for optimal performance.
Your stove is approved to be installed with an outside air
intake (69FAK) which is necessary for a mobile home.
You can purchase the 69FAK through your heater dealer.
Installation instructions are supplied with the air intake
kit.
ATTENTION:
DO NOT VENT UNDER ANY PORCH, DECK,
AWNING, OR IN ANY SEMI ENCLOSED OR
ROOFED AREA. DOING SO MAY RESULT IN
UNPREDICTABLE AIRFLOW AT THE VENT CAP
UNDER CERTAIN CONDITIONS AND CAN AFFECT
THE PERFORMANCE OF YOUR STOVE, AS WELL
AS, OTHER UNFORESEEABLE ISSUES.
SECURING APPLIANCE TO THE FLOOR
Use the designated holes to secure the unit to the floor.
WARNING! DO NOT INSTALL IN SLEEPING ROOM.
CAUTION! THE STRUCTURAL INTEGRITY OF THE
MOBILE HOME FLOOR, WALL, AND CEILING/ROOF
MUST BE MAINTAINED.
WHEN INSTALLED IN A MOBILE HOME, THE STOVE
MUST BE GROUNDED DIRECTLY TO THE STEEL
CHASSIS AND BOLTED TO THE FLOOR.
In addition to the previously detailed installation
requirements, mobile home installations must meet the
following requirements:
• This stove must be securely fastened to the floor of the
mobile home through the two holes in the rear of the
stove using 2, 1/4” lag bolts that are long enough to go
through both a hearth pad, if used, and the floor of the
home.
• The heater must be electrically grounded to the steel
chassis of the mobile home with 8 GA copper wire
using a serrated or star washer to penetrate paint or
protective coating to ensure grounding.
• Vent must be 3 or 4-inch “PL” Vent and must extend
a minimum or 36” (914 mm) above the roof line of the
mobile home and must be installed using a certified
ceiling fire stop and rain cap.
• When moving your mobile home, all exterior venting
must be removed while the mobile home is being
relocated. After relocation, all venting must be
reinstalled and securely fastened.
• Outside Air is mandatory for mobile home installation.
See Outside Air Supply section and your dealer
purchasing.
• Check with your local building ocials as other codes
may apply.
VENTING REQUIREMENTS
WARNING:
• INSTALL VENT AT CLEARANCES SPECIFIED BY
THE VENT MANUFACTURER.
• DONOTCONNECTTHEPELLET VENTTOAVENT
SERVING ANY OTHER APPLIANCE OR STOVE.
• DO NOT INSTALL A FLUE DAMPER IN THE
EXHAUST VENTING SYSTEM OF THIS UNIT.
The following installation guidelines must be followed
to ensure conformity with both the safety listing of this
stove and to local building codes. Do not use makeshift
methods or compromise in the installation.
IMPORTANT:
THIS UNIT IS EQUIPPED WITH A NEGATIVE DRAFT
SYSTEM THAT PULLS AIR THROUGH THE BURN
POT AND PUSHES THE EXHAUST OUT OF THE
DWELLING.IFTHISUNITISCONNECTEDTOAFLUE
SYSTEM OTHER THAN THE WAY EXPLAINED IN
THIS MANUAL, IT WILL NOT FUNCTION PROPERLY.
MAXIMUM VENTING DISTANCE
Installation MUST include at least 3-feet of vertical pipe
outside the home. This will create some natural draft to
reduce the possibility of smoke or odor during appliance
shutdown and keep exhaust from causing a nuisance or
hazardbyexposingpeopleorshrubstohightemperatures.
The maximum recommend vertical venting height is 12-
feet for 3-inch type “PL” vent. Total length of horizontal
INSTALLATION

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© 2021 United States Stove Company
vent must not exceed 4-feet. This could cause back
pressure. 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.
IMPORTANCE OF PROPER DRAFT
Draft is the force which moves air from the appliance
up through the chimney. The amount of draft in your
chimney depends on the length of the chimney, local
geography, nearby obstructions and other factors. Too
much draft may cause excessive temperatures in the
appliance. Inadequate draft may cause backpung into
the room and ‘plugging’ of the chimney. Inadequate draft
will cause the appliance to leak smoke into the room
through appliance and chimney connector joints. An
uncontrollable burn or excessive temperature indicates
excessive draft. Take into account the chimney’s location
to ensure it is not too close to neighbours or in a valley
which may cause unhealthy or nuisance conditions.
PELLET VENT TYPE
A certified 3-inch or 4-inch 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-inch to 4-inch adapter for 4-inch pipe). Connection
at back of stove must be sealed using Hi-Temp RTV.
Use 4-inch vent if the vent height is over 12-feet or if
the installation is over 2,500 feet above sea level. We
recommend the use of Simpson Dura-Vent® or Metal-
Fab® pipe (if you use other pipe, consult your local
building codes and/or building inspectors). Do not use
Type-B Gas Vent pipe or galvanized pipe with this unit.
The pellet vent pipe is designed to disassemble for
cleaning and should be checked several times during the
burning season. Pellet vent pipe is not furnished with the
unit and must be purchased separately.
PELLET VENT INSTALLATION
The installation must include a clean-out tee to enable
collection of fly ash and to permit periodic cleaning of the
exhaust system. 90-degree 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%. All joints in the vent system must be
fastened by at least 3 screws, and all joints must be
sealed with Hi-Temp RTV silicone sealant 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. Vent surfaces can get hot enough
to cause burns if touched by children. Noncombustible
shielding or guards may be required.
PELLET VENT TERMINATION
Donot terminatethe ventin anenclosed orsemi-enclosed
area, such as; carport, garage, attic, crawl space, under a
sun deck or porch, narrow walkway, or any other location
that can build up a concentration of fumes. Termination
in one of these areas can also lead to unpredictable
pressure situations with the appliance, and could result
in improper performance and/or malfunction. The
termination must exhaust above the outside air inlet
elevation. The termination must not be located where it
will become plugged by snow or other materials. Do not
terminate the venting into an existing steel or masonry
chimney.
VENT TERMINATION CLEARANCES
A. Minimum 4-foot (1.22m) clearance below or beside
any door or window that opens.
B. Minimum 1-foot (0.3m) clearance above any door or
window that opens.
C. Minimum 3-foot (0.91m) clearance from any
adjacent building.
D. Minimum 7-foot (2.13m) clearance from any grade
when adjacent to public walkways.
E. Minimum 2-foot (0.61m) clearance above any grass,
plants, or other combustible materials.
INSTALLATION

© 2021 United States Stove Company
9
F. Minimum 3-foot (0.91m) clearance from an forced
air intake of any appliance.
G. Minimum 2-foot (0.61m) clearance below eves or
overhang.
H. Minimum 1-foot (0.3m) clearance horizontally from
combustible wall.
I. Must be a minimum of 3 foot (0.91m) above the roof
and 2 foot (0.61m) above the highest point or the roof
within 10 feet (3.05m).
THROUGH THE WALL INSTALLATION
(RECOMMENDED INSTALLATION)
TYPICAL THROUGH THE
WALL INSTALLATION
Canadian installations must conform to CAN/CSA-B365.
To vent the unit through the wall, connect the pipe
adapter to the exhaust motor adapter. If the exhaust
adapter is at least 18” (457 mm) above ground level, a
straight section of pellet vent pipe can be used through
the wall. Your heater dealer should be able to provide
you with a kit that will handle most of this installation,
which will include a wall thimble that will allow the proper
clearance through a combustible wall. Once outside the
structure, a 3” (76 mm) clearance should be maintained
from the outside wall and a clean out tee should be
placed on the pipe with a 90-degree turn away from the
house. At this point, a 3ft (0.91m) (minimum) section of
pipe should be added with a horizontal cap, which would
complete the installation. A support bracket should be
placed just below the termination cap or one every 4ft
(1.22m) to make the system more stable. If you live in an
area that has heavy snowfall, it is recommended that the
installation be taller than 3ft (0.91m) to get above the
snowdrift line. This same installation can be used if your
heater is below ground level by simply adding the clean-
out section and vertical pipe inside until ground level is
reached. With this installation you have to be aware of the
snowdrift line, dead grass, and leaves. We recommend
a 3ft (0.91m) minimum vertical rise on the inside or
outside of the house. The “through the wall” installation
is the least expensive and simplest installation. Never
terminate the end vent under a deck, in an alcove, under
a window, or between two windows. We recommend
Simpson Dura-Vent® or Metal-Fab® kits.
THROUGH THE ROOF/CEILING
INSTALLATION
• When venting the heater through the ceiling, the pipe
is connected the same as through the wall, except the
clean-out tee is always on the inside of the house, and a
3” (76 mm) adapter is added before the clean-out tee.
• You must use the proper ceiling support flanges and
roof flashing (supplied by the pipe manufacturer; follow
the pipe manufacturer’s directions). It is important to
note that if your vertical run of pipe is more than 12ft
(3.7m), the pellet vent pipe size should be increased to
4” (102 mm) in diameter.
• Do not exceed more than 4ft (1.22m) of pipe on a
horizontal run and use as few elbows as possible. If
an oset is required, it is better to install 45-degree
elbows rather than 90-degree elbows.
INSTALLATION

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© 2021 United States Stove Company
PANEL CONTROLS
The blowers and automatic fuel supply are controlled
from a panel on the top of this unit. The control panel
functions are as follows.
A. ON/OFF SWITCH (“POWER” BUTTON)
• When pushed, the stove will automatically ignite. No
other fire starter is necessary. The igniter will stay
on for at least 10 and up to 12 minutes, depending on
when Proof of Fire is reached. The fire should start in
approximately 5 minutes.
• The red light located above the “POWER” button will
turn green when pressed and remain green until the
stove is turned o.
• After pushing “POWER”, the auger motor is on for 3.5
minutes, o for 1 minute. During the remainder of the
start-up period, the auger motor operates on the heat
range “1” setting.
• During start up the heat level advance (Up and Down
keys) will change the heat range indicator level
accordingly, but there is no change in the stoves
operating conditions until start-up is completed.
• During start-up ignition must occur within 12 minutes
or the stove will error out and show E4.
• During the start-up phase, the Mode key does not
function.
B. LEVEL / TEMP ARROW BUTTONS
• These buttons when pushed will set the pellet feed
rate, hence the heat output or heat range of your stove.
• The levels of heat output will incrementally change on
the bar graph starting from heat range “1” to heat range
“5”.
C. °C / °F Button
• The °C / °F button changes the two digit display from
degrees Celsius to degrees Fahrenheit.
D. MODE (M/T) BUTTON
• The Mode of the stove can be switched between
manual and controlled with a Thermostat. Separate
LEDs to the left of the two digit display indicate the
mode of operation – Manual or T-Stat. The stove has
to be in normal operation to be switched from Manual
to T-Stat mode.
• Manual mode operates according to the 5 set levels of
feed on the bar graph from heat range “1” to heat range
“5”.
T-Stat mode works as follows:
• The stove has a built in Thermostat into the controls of
the appliance. The temperature sensor for the T-Stat
is located on the back of the stove behind the display
board.
• Once the stove has gone into run mode the stove can be
switch into T-Stat mode.
• The Up and Down Level / Temp Arrow buttons are used
to change the desired set-point temperature. Once the
desired temperature is reached the two digit display
will flash for four seconds and reset to the actual room
temperature.
• Once the stove reaches within 3°F of the desired
temperature set point, it returns to the heat range that
the stove was set on before it was switched to T-Stat
mode (if the stove was running on heat range “5” when
switched to T-stat mode when it gets within 3°F of the
set point it will return to heat range “5”).
• Once the stove reaches the desired set-point, the stove
will drop to heat range “1”.
• When room temperature drops below desired set-point
the stove will ramp back up until it reaches the desired
temperature.
HOW TO ADJUST THE FUEL ADJUSTER
It is a common occurrence in the pellet industry for the
average pellet size to vary. Due to the varying sizes of
pellets, this appliance is equipped with a fuel adjuster to
adjust the amount of fuel allowed to pass into the auger
assembly. The fuel adjuster is located inside the hopper.
Note: The factory default setting for this is full open. To
decrease the flow of pellets, move the fuel adjuster down.
OPERATION INSTRUCTIONS
NEVER OPERATE THIS PRODUCT WHILE UNATTENDED