USSC 5660 (I) User manual

Installation and Operating Manual
Model 5660 (I)
Tested &
Listed by
Portland
Oregon USA
OMNI- Test Laboratories, Inc.
Report #:
215-S-32-4 and 215-S-33-4
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 fire 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 fire officials 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
Save These Instructions
United States Stove Company • 227 Industrial Park Road, South Pittsburg, TN 37380 • Phone #: [phone]
Part No.: 851901E

TABLE OF CONTENTS
Topic Page(s)
Introduction ....................................................................................................................................................3
Safety Information .........................................................................................................................................4
Specifications ............................................................................................................................................... 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 fireplace insert versions.
U.S. Stove Pellet Burning Room Heaters have been certified 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 specifications:
Fines (fine 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 flow through the burn pot, which will significantly affect the performance and efficiency 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 fire, 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.
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.
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 floor.
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 flames). Do not operate the stove if the flame becomes dark or sooty or if the burn pot overfills
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 fire in the ash pan may occur.
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 qualified 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 flu-like symptoms while cooking or in the vicinity of this appliance. Carbon
monoxide poisoning, which can easily be mistaken for a cold or flue, 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

5
SAFETY INFORMATION - continued
Keep foreign objects out of the hopper.
Contact your local building officials to obtain a permit and information on any installation restrictions or inspection require-
ments 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 CHEMI-
CALS 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 HEAT EXCHANGER VENT TUBE CLEANER KNOB WILL BE
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.