United States Stove Fiero C9947L Quick start guide

UNITED STATES
STOVE COMPANY
227 INDUSTRIAL PARK ROAD • P.O.BOX 151 • SOUTH PITTSBURG,TN. 37380 • (423)-837-2100
This is an unvented gas-fired
heater. It uses air (oxygen) from
the room in which it is installed.
Provisionsforadequatecombus-
tion and ventilation air must be
provided. Refer to "Adequate
Combustion And Ventilation Air"
on page(s) 6 of this manual.
WARNING:
Do not use a blower insert,
heat exchanger insert or other
accessories not approved
for use with this heater.
Save this manual for
future reference.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury, or loss of
life.
~Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
~WHATTO DO IFYOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier,call
the fire department.
~Installation and service must be performed by a
qualified installer, service agency, or the gas supplier.
851371B 6/00
This appliance may be installed in an aftermarket* manufactured (mobile) home,
where not prohibited by state or local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
This appliance is only for use with the type gas indicated on the rating plate. This appli-
ance is not convertible for use with other gases.
Owner's Operation and Installation Manual
Natural Gas Model
C9947N Propane (LPG) Gas Model C9947L

SECTION PAGE
IMPORTANT SAFETYINFORMATION.......................................................3-4
PRODUCTFEATURES..................................................................................4
9947SPECIFICATIONS.................................................................................5
CONTENTS....................................................................................................5
ITEMSREQUIRED FORINSTALLATION......................................................6
INSTALLATION...............................................................................................7
MANTELCLEARANCES................................................................................8
GASCONNECTION..................................................................................9-10
GASPRESSURECHECK.............................................................................10
FRONTSCREEN REMOVAL.......................................................................11
LOGASSEMBLY...........................................................................................11
OPERATINGINSTRUCTIONS................................................................12-14
CLEANING/ SERVICING.......................................................................14-15
FLAMEAPPEARANCE................................................................................15
PARTS LISTFOR HEATERASSEMBLY.................................................16-17
PARTS LIST FOR BURNER AND LOG ASSEMBLY...............................18-19
TROUBLESHOOTING...........................................................................20-21
OPTIONALEQUIPMENT..............................................................................22
WIRINGDIAGRAMS...............................................................................23-25
NOTES..........................................................................................................26
LIMITEDWARRANTYPOLICY....................................................................27
TABLE OF CONTENTS
2
Installation and repair must be done by a qualified service person. The appliance should be in-
spected before use and at least annually by a professional service person. More frequent cleaning
may be required due to excessive lint from carpeting, bedding material, etc. It is imperative that
control compartments, burners and circulating air passageways of the appliance be kept clean.
NOTICE

IMPORTANT SAFETY INFORMATION
3
INSTALLER: Please leave these instructions with the owner.
OWNER: Please retain these instructions for future reference.
IMPORTANT: Read these instructions carefully before installing or trying to operate this heater.
WARNING: Any change to this heater or its controls can be dangerous. Improper installation or
use of the heater can cause serious injury or death from fire, burns, explosion or carbon monoxide
poisoning.
1. CARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning are similar to
the flu with headaches, dizziness and/or nausea. If you have these signs, obtain fresh air
immediately. Have the heater serviced as it may not be operating properly.
2. The installation must conform with local codes or, in the absence of local codes, with the National
Fuel Gas Code, ANSI Z223.1.
2. This heater shall not be installed in a bedroom or bathroom.
4. WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
injury or property damage. Refer to this owner's manual. Installation and service must be
performed by a qualified installer, service agency or the gas supplier.
5. To prevent malfunction and/or sooting, a vent-free gas heater should be cleaned at least
annually by a professional service person. More frequent cleaning may be required due to
excessive lint from carpeting, etc. It is imperative that control compartments, burners and
circulating air passageways be kept clean.
6.
Correct placement of the ceramic fiber logs is necessary to avoid problems with sooting. Sooting
can settle on surfaces outside the heater and cause discoloration. See the appropriate sections
of this manual for instructions.
7. WARNING: Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner
flame patterns. Do not place a blower inside burn area of firebox. Ceiling fans may create drafts
that alter burner flame patterns. Sooting and improper burning will occur.
8. This is a vent-free gas fired heater. It uses air (oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air must be provided. Refer to installation
guidelines.
9. Children and adults should be alerted to the hazard of high surface temperature and should stay
away to avoid burns or clothing ignition.
10. Young children should be carefully supervised when they are in the same room with the
appliance.
11. Do not place clothing or other flammable material near the appliance.

IMPORTANT SAFETY INFORMATION CONTINUED
13. Keep appliance area clear and free from combustible materials, gasoline and other flammable
vapors and liquids.
15. Any safety screen or guard removed for servicing, must be replaced prior to heater operation.
16. This vent-free gas heater is intended to be smokeless. If logs appear to smoke, turn off the
heater and call a qualified service person. Initial burn off may cause slight smoke and odor
during the first four hours of operation.
17. Input ratings are shown in BTU per hour and are for elevations up to 2,000 feet. For elevations
above 2,000 feet, input ratings s hould be reduced 4 percent per 1,000 feet above sea level.
Refer to the National Fuel Gas Code.
18. The appliance and its appliance main gas shut off valve must be disconnected from the gas
supply piping system during any pressure testing of that system at test pressures in excess of 1/
2 psig (3.5 kPa).
19.
The appliance must be isolated from the gas supply piping system by closing its equipment
shut off valve during any pressure testing of the gas supply piping system at test pressures
equal to or less than 1/2 psig (3.5 kPa).
20. Do not use this heater if any part has been under water. Immediately call a qualified service
technician to inspect the room heater and to replace any part of the control system and any
gas control that has been under water.
4
Features:
• Heating Efficiency - 99.9%
• Wide BTU Range: 27,000-39,900.
• Safe Operation -
Oxygen Depletion Sensor (ODS).
• Fibre Ceramic Logs.
• 120 CFM Blower
• Push-Button Piezo Ignitor.
• Clean Operation.
• Easy Operation.
• Heats up to 1,200 square feet.
• Optional Remote Control, Wall Switch
and Wall Thermostat Kits
PRODUCT FEATURES
9947 Vent-free Gas Pedestal Heater
Figure 1.

9947 SPECIFICATIONS
Natural Gas
Manifold Pressure Setting: 4" w.c.
Gas Inlet Pressure: Maximum 10-1/2" w.c.
Minimum 5" w.c.
Propane/LPG
Manifold Pressure Setting: 10" w.c.
Gas Inlet Pressure: Maximum 13" w.c.
Minimum 11" w.c.
5
CAUTION
GLOVES ARE RECOMMENDED WHEN HANDLING CERAMIC FIBER
LOGS TO PREVENT SKIN IRRITATION FROM LOOSE FIBERS. LOGS
ARE FRAGILE, HANDLE WITH CARE.
Carefully inspect the contents for shipping damage and immediately inform
your dealer if any damage is found.
9947L and 9947N Unvented Gas Heaters
1. Packet containing Homeowner's/Installation instructions.
2. Three(3)individuallywrappedfiber ceramiclogs,refertoinstallationinstructions.
3. Unvented gas heater.
CHECK THAT ALL LISTED PARTS HAVE BEEN RECEIVED
CONTENTS
Gas Rate Number
Model Number Type Max BTU/Hr Min BTU/Hr of Burners
9947N Manual 39,900 27,000 1
9947L Manual 39,900 27,000 1
Controls - Main control has 4 positions:
1. OFF - All gas to the gas logs is shut off at the control
2. IGN - Piezo ignitor allows ignition of the pilot without the use of matches or batteries
3. PILOT - Valve position to light/maintain a standing pilot
4. ON - Gas flow to complete system.
HIGH / LOW Control - Infinite control :
Rotate knob clockwise to LOW, counter clockwise to HIGH.