United States Stove Stove C9947L User Manual

UNITED STATES  
STOVE COMPANY  
227 INDUSTRIAL PARK ROAD • P.O. BOX 151 • SOUTH PITTSBURG, TN. 37380 • (423)-837-2100  
Natural Gas Model  
C9947N  
Propane (LPG) Gas Model  
C9947L  
Owner's Operation and Installation Manual  
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.  
This is an unvented gas-fired  
heater. It uses air (oxygen) from  
the room in which it is installed.  
Provisions for adequate combus-  
tion and ventilation air must be  
provided. Refer to "Adequate  
Combustion And Ventilation Air"  
on page(s) 6 of this manual.  
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.  
WARNING:  
Do not use a blower insert,  
heat exchanger insert or other  
accessories not approved  
for use with this heater.  
• 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.  
Save this manual for  
future reference.  
851371B 6/00  
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IMPORTANT SAFETY INFORMATION  
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.  
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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 should 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.  
PRODUCT FEATURES  
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  
9947 Vent-free Gas Pedestal Heater  
Figure 1.  
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9947 SPECIFICATIONS  
Natural Gas  
Propane/LPG  
Manifold Pressure Setting:  
Gas Inlet Pressure: Maximum  
Minimum  
4" w.c.  
10-1/2" w.c.  
5" w.c.  
Manifold Pressure Setting:  
Gas Inlet Pressure: Maximum  
Minimum  
10" w.c.  
13" w.c.  
11" w.c.  
Gas Rate  
Number  
of Burners  
Model Number  
9947N  
Type  
Manual  
Manual  
Max BTU/Hr  
39,900  
Min BTU/Hr  
27,000  
1
1
9947L  
39,900  
27,000  
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.  
CONTENTS  
9947L and 9947N Unvented Gas Heaters  
1. Packet containing Homeowner's/Installation instructions.  
2. Three (3) individually wrapped fiber ceramic logs, refer to installation instructions.  
3. Unvented gas heater.  
CHECK THAT ALL LISTED PARTS HAVE BEEN RECEIVED  
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.  
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ITEMS REQUIRED FOR INSTALLATION  
ITEMS REQUIRED FOR INSTALLATION  
Ensure that the following items are available before proceeding with installation:  
• External regulator (for propane/LPG only)  
• Piping which complies with local codes  
• Pipe sealant approved for use with  
• Manual cutoff valve  
• Sediment trap  
• Pipe wrench  
propane / LPG (resistant to sulfur compounds)  
CODES  
Adhere to all local codes or in their absence, the latest edition of THE NATIONAL FUEL GAS CODE  
ANSIZ223.1 or NFPA54 which can be obtained from:  
American National Standards Institute, Inc.  
1430 Broadway  
National Fire Protection Association, Inc.  
Batterymarch Park  
or  
New York, NY 10018  
Quincy, MA 02269  
Due to high temperatures, do not install the heater:  
• Where curtains, furniture, clothing or other flammable objects are less than  
42" from the front of the heater.  
• In high traffic areas.  
• In windy or drafty areas.  
DO NOT PLACE CLOTHING OF OTHER FLAMMABLE MATERIAL ON OR NEAR  
THE APPLIANCE.  
ADEQUATE COMBUSTION AND VENTILATION AIR  
This heater shall not be installed in a confined space unless provisions are provided for adequate combus-  
tion and ventilation air.  
(a) Walls and ceiling exposed to the outside atmosphere have a continuous water vapor retarded  
11  
with a rating of 1 perm (6 x 10 kg per pa-sec-m²) or less with openings gasketed or sealed , and  
(b) Weather stripping has been added on openable windows and doors, and  
(c) Caulking or sealants are applied to areas such as joints around window and door frames,  
between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations  
for plumbing, electrical, gas lines, and at other openings.  
The National Fuel Gas Code defines a confined space as a space whose volume is less than 50 cubic feet  
per 1,000 BTU per hour (4.8m³ per kw) of the aggregate input rating of all appliances installed in that space  
and an unconfined space is defined as a space whose volume is not less than 50 cubic feet per 1,000 BTU  
per hour (4.8m³ per kw) of the aggregate input rating of all appliances installed in that space. Rooms  
communicating directly with the space in which the appliances are installed, through openings not fur-  
nished with doors, are considered a part of that unconfined space.  
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INSTALLATION  
The following formula can be used to determine the maximum  
heater rating per the definition of unconfined space:  
BTU/HR = (L1+L2) Ft x (W) Ft x (H) Ft x 1000  
50  
Consider two connecting rooms with an open area between,  
with the following dimensions:( See Fig. 2, Example)  
L1=15-1/2 Ft., L2=12 Ft., W=12 ft., H=8Ft  
50  
=52800BTU/HR  
If there were a door between the two rooms the calculation would  
be based only on the room with the heater.  
BTU/HR=(15-1/2) x (12) x (8) x 1000  
50  
=29760BTU/HR  
FIGURE 2.  
Wheninstallingtheappliancedirectlyoncarpeting,tileorothercombustible  
material, other than wood flooring, the appliance must be installed on a  
metal or wood panel extending the full width and depth of the appliance.  
If the area in which the heater may be operated is smaller than that defined as an  
unconfined space or if the building is of unusually tight construction, provide  
adequate combustion and ventilation air by one of the methods described in the  
National Fuel Gas Code, ANSI Z223.1, Section 5.3, or applicable local codes.  
Ensure the minimum clearances shown in FIGURE 3 are maintained for  
accessibility for purposes of servicing and proper operation. Left and  
right clearances are determined when facing the front of the heater.  
Maintaintheseclearances  
to ensure adequate space  
around air opening for  
proper operation.  
Minimum clearances to  
combustibles:  
Top of heater...............................36"  
Right Side of heater.....................15"  
Left Side of heater.........................8"  
Front of heater.............................42"  
Rear of heater...............................4"  
FIGURE 3. Minimum Clearances  
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MANTEL CLEARANCES  
If placing a custom mantel above the heater, you must meet minimum clearances between  
mantel shelf and the top of the heater.  
If your installation does not meet the below minimum clearances, you must:  
• Raise the mantel to an acceptable height, OR  
• Remove the mantel.  
MINIMUM MANTEL CLEARANCES  
Figure 4.  
UNDERSIDE OF  
MANTEL SHELF  
MANTEL SHELF  
DISTANCE TO  
UNDERSIDE OF  
MANTEL  
TOP OF HEATER  
ALL MINIMUM  
DISTANCES ARE  
IN INCHES  
FLOOR  
MINIMUM CLEARANCE  
TO BACK WALL  
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GAS CONNECTION  
A qualified gas appliance installer must connect the fireplace to the gas supply.  
Consult all local codes.  
Use new black iron or steel pipe only. Internally tinned copper tubing can be used  
in some areas when permitted by local codes. Only use pipe of 1/2" or greater  
diameter to allow full gas volume to heater. Excessive pressure loss will occur if the  
pipe is too small.  
A manual shutoff valve, union and plugged 1/8" NPT pressure tapping point must be  
installed upstream of the heater (FIGURE 5).  
A sediment trap must be installed upstream of the heater to prevent moisture and  
contaminants from passing through the pipe to the heater controls and burners.  
Failure to do so could prevent the heater from operating reliably (FIGURE 5).  
IMPORTANT:Loosenthepipeadapter  
on the flex tube before installing to the  
system piping.  
TO HEATER  
CONTROL VALVE  
STAINLESS  
FLEXIBLE TUBE  
PIPE  
MANUAL  
SHUTOFF VALVE  
PIPE  
COUPLING  
TEE JOINT  
SEDIMENT TRAP  
PIPE NIPPLE  
CAP  
FIGURE 5. Gas Connection  
CHECK GAS TYPE: The gas supply must be the same as stated on heater's rating plate. If the gas  
supply is different, DO NOT INSTALL the heater. Contact your dealer for the correct model.  
Connecting directly to an unregulated propane/LPG tank can cause an explosion.  
9
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GAS CONNECTION  
The gas inlet connection is 3/8" NPT,  
made at the rear of the unit in the bottom  
left-hand corner.  
Test all gas joints from the gas meter to  
the heater for leaks using soap and water  
solution after completing connection. DO  
NOT USE AN OPEN FLAME.  
Gas Inlet Connection (3/8" NPT)  
FIGURE 6. Rear View of 9947 Vent-Free Gas Heater  
GAS PRESSURE CHECK  
Theheaterregulatorcontrolstheburnerpressurewhichshouldbecheckedatthepressuretestpoint  
located on the front of the main control and is accessible by removing the control panel on the right  
side of the heater.  
The pressure should be checked with the heater burning and the control set to high (HI).  
The pressure regulator is preset and locked to avoid tampering. If the pressure is not as specified  
in Product Specifications (Page 5), contact your dealer and replace the regulator.  
FIGURE 7. Pressure Test Point Location  
10  
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REMOVING FRONT SCREEN  
REMOVING FRONT SCREEN: 1) Remove screw from the top of the screen (Fig. 8A). 2) Tilt the top of  
the screen toward you slightly and lift the screen up out of the screen retainer (Fig. 8B). NOTE: To reinstall  
the front screen, reverse steps 1 & 2.  
FIG. 8A  
FIG. 8B  
LOG ASSEMBLY  
LOG POSITIONING  
Do not handle these logs with your bare hands! Always wear gloves to prevent skin irritation from  
ceramic fibers. After handling logs, wash your hands gently with soap and water to remove any  
traces of fibers.  
PROPER INSTALLATION SEQUENCE:  
WARNING: Failure to position the  
parts in accordance with these  
diagrams or failure to use only  
parts specifically approved with  
this heater may result in property  
damage or personal injury.  
FIGURE 9. Log Set Assembly  
The positioning of the logs is critical to the safe and clean operation of this  
heater. Sooting and other problems may result if the logs are not properly  
and firmly situated in the appliance. Never add additional logs or  
embellishmentssuchaspinecones,vermiculiteorrockwooltotheheater.  
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OPERATING INSTRUCTIONS  
Avoidanydraftsthataltertheburnerflamepatterns. Donotallowfanstoblowdirectlyintotheheater.  
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.  
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.  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING: If you do not follow these instructions exactly, a fire or  
explosionmayresultcausingpropertydamage,personalinjuryorlossof  
life.  
A.  
This appliance is equipped with an ignition device (Piezo) which automatically lights the pilot.  
If Piezo fails, then light the pilot using matches. Refer to match lighting instructions (page 14).  
When lighting the pilot, follow these instructions exactly.  
B.  
BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the  
floor because some gas is heavier than air and will settle on the floor.  
WHAT TO DO IF YOU SMELL GAS  
• Do not attempt to light any appliance.  
• Do not touch any electric 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.  
C.  
Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not  
pushinorturnbyhand, don'ttrytorepairit, callaqualifiedservicetechnician. Forceorattempted  
repair may result in a fire or explosion.  
D.  
Do not use this appliance if any part has been under water. Immediately call a qualified service  
technician to inspect the appliance and to replace any part of the control system and any gas  
control which has been under water.  
FOR YOUR SAFETY  
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other  
appliance.  
12  
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OPERATING INSTRUCTIONS  
LIGHTING INSTRUCTIONS  
1. STOP! Read the safety information on the  
previous page.  
2. Set the thermostat to lowest setting.  
2. Turn off all electrical power and open the  
access door.  
3. Push in gas control (B) slightly and turn clock  
wise  
to "OFF".  
5. Push "ON / OFF" switch to "OFF" position.  
TOP VIEW OF BURNER ASSEMBLY  
B
If theknobdoesnotpopupwhenreleased,stop  
and immediatelycallyourservicetechnicianor  
gas supplier. If the pilot will not stay lit after  
several tries, turn control knob to "OFF" and  
call your gas supplier.  
D
A
9. Turn valve knob clockwise  
to "ON".  
C
10. Wait about one minute then turn burner  
switch (D) to "ON". It will take a few minutes  
for the thermopile located on top of the pilot  
to heat up.  
NOTE: Knob cannot be turned from "PILOT" to  
"OFF" unless knob is pushed in slightly. Do not  
force.  
NOTE: If unit is equipped with remote "on-off"  
wall switch, switch must be in "on" position for  
burner to light.  
6. Wait five (5) minutes to clear out any gas.  
Thensmellforgas, includingnearthefloor. If  
you smell gas, STOP! Follow "B" in the  
safety information on the previous page. If  
you don't smell gas, go on to the next step.  
7. Depressknob(B)andturngascontrolknobcounter  
11. Adjustflameheightwiththehigh-lowknob(C).  
12. Turn on all electrical power to the appliance.  
13. Close access door.  
clockwise  
to "Pilot".  
NOTE: It is normal for the new heater to give off  
someodorthefirsttimeitisburned. Thisisdueto  
thecuringofthepaintandanyundetectedoilfrom  
the manufacturing process.  
It is recommended that you burn your new heater  
for at least two (2) hours the first time you use it. If  
optional fan kit is installed, leave it turned off for  
the break in period.  
8. Push in knob (B) all the way and hold in.  
Immediately light the pilot by pushing in on  
the piezo button (A). Continue to hold the  
control knob in for about one (1) minute after  
thepilotislit. Releaseknobanditwillpopback  
up.Pilotshouldremainlit. Ifitgoesout,  
repeatsteps4through8.  
TURN OFF GAS TO APPLIANCE  
1. Open access door.  
2. Turn switch (D) to "OFF"  
3. Unplug all electric power if service is to be performed.  
4. Push in gas control knob slightly and turn clockwise  
5. Close access door.  
to the "OFF" position.  
13  
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OPERATING INSTRUCTIONS  
Wait 30 seconds before readjusting the heater when the control has been  
turned down to a lower setting.  
MATCH LIGHTING INSTRUCTIONS  
If the pilot will not light using the piezo ignitor, you can light the pilot with a match. First, locate the pilot.  
The pilot is located between the two burner tubes on the right end (facing the unit), inside the firebox.  
To light pilot with a match, move the gas control (knob B, pg. 12) to the pilot position and hold down.  
Light match and place near pilot. Once pilot is lit, continue to hold the knob for about ten seconds.  
Then follow steps 7 thru 10 on page 12.  
CHECKING FLAME APPEARANCE  
Flames from the pilot, and burner should be visually checked when the heater is installed. In addition  
a periodic visual check of the flames should be made.  
PILOT FLAME  
If the pilot flame does not touch the thermo-  
couple, then the main burner is unlikely to func-  
tion reliably (FIGURE 11).  
The pilot flame should always be present when  
the heater is in operation and should just touch  
the top of the thermocouple tip (FIGURE 10).  
FIGURE 11. Incorrect Shape of Pilot Flame  
FIGURE 10. Pilot Flame  
CLEANING / SERVICING  
Annual inspection and cleaning by your dealer or qualified service technician is recommended to  
prevent malfunction and/or sooting.  
WARNING  
Turn off heater and allow to cool before cleaning.  
Remove front screen, (see page 11). Carefully lift screen from locating stubs and set aside during  
cleaning. Refer to instructions on page 11 for installation of screen. Do not operate the unit with the  
screen removed.  
Remove logs, handling carefully by holding gently at each end. Gloves are recommended to prevent  
skin irritation from ceramic. If the skin becomes irritated, wash gently with soap and water. Refer to  
manual for correct log placement.  
14  
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CLEANING / SERVICING  
Periodic Cleaning  
• Do not use cleaning fluid to clean logs or any part of heater.  
• Logs - Brush with soft bristle brush or vacuum with brush attachment.  
• Vacuum loose particles and dust from the front and rear burner, control, and piezo.  
• Inspect burner's and air intake hole. Remove lint or particles with vacuum.  
• External case should be dusted and wiped with a wet soapy cloth.  
Annual Cleaning/Inspection  
• Inspect and clean burner air intake holes.  
• Inspect and clean all burner ports.  
• Inspect ODS pilot for operation and accumulation of lint at air intake holes.  
• Verify flame pattern and log placement for proper operation.  
• Verify smooth and responsive ignition of main burner and rear burner.  
FLAME APPEARANCE  
In normal operation at full rate after 15 minutes the following flame appearance should be observed.  
FLAMES  
The flames behind log #1, and in between log #2, should be yellow with a blue base. (See Below,  
Figure 12)  
#2  
#1  
Figure 12. Flames - Natural Gas and LP Gas  
15  
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HEATER ASSEMBLY  
16  
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PARTS LIST  
KEY  
1
2
3
4
5
6
7
8
PART NO.  
24775  
24776  
24878  
69243  
24779  
69248  
24782  
24780  
24783  
24784  
24785  
24786  
24787  
24879  
24880  
24790  
24791  
24789  
24792  
89933  
89934  
24795  
24794  
86483  
80381  
83351  
89824  
89811  
89943  
24796  
83172  
83888  
83278  
83244  
80090  
DESCRIPTION  
QTY.  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
2
4
1
2
1
1
2
2
2
1
1
93  
1
4
4
1
1
1
3
1
5
1
1
Pedestal  
Pedestal Trim  
Pedestal Brace  
Firebox Bottom  
Firebox  
Firebox Inner Top  
Firebox Outer Top  
Front  
9
Blower Box  
Cabinet Back  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
N/S  
26  
27  
28  
29  
N/S  
30  
31  
32  
33  
Right Side, Cabinet Door  
Left Side, Cabinet  
Control Cover Box  
Latch Bracket  
Front Screen Retainer  
Front Trim, Top & Bottom  
Front Trim, Side  
Cabinet Top  
Louver Frame  
Long Louver  
Short Louver  
Front Screen  
Side Screen  
Thermodisc Bracket  
Thermodisc  
#8 x 3/8 Hex Head Screw  
Latch  
Hinge  
Knob, Cabinet Door  
Support, Right Cabinet  
#10A x 1/2 Hex Head Screw  
120 CFM Blower  
#10 Flat Washer  
10-24 Kep Nut  
Rheostat w/Nut  
Rheostat Knob (Included with Rheostat)  
Power Supply Cord  
Rubber Grommet  
Strain Relief Bushing  
#10-24 x 1/2 Machine Screw  
Wire Assembly (28" black wire)  
Wire Assembly (12" black wire)  
34  
N/S  
N/S  
N/S  
N/S  
N/S  
80232  
89390A  
80109  
83005  
80425  
80426  
N/S = Not Shown  
17  
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BURNER AND LOG ASSEMBLY  
20  
19  
18  
2
3
1
4
13  
17  
5
6
14  
16  
15  
10  
12  
11  
8
9
7
18  
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PARTS LIST  
KEY PART NO.  
DESCRIPTION  
QTY.  
1
1
1
1
7
1
1
1
1
1
1
4
1
1
1
2
1
1
1
1
2
1
1
1
1
2
24777  
89920  
89921  
89922  
83172  
89842  
89841  
81201  
24788  
81198  
81202  
83464  
89918  
89923  
C42373  
80376  
89761  
80423  
81199  
81200  
24888  
89940  
89939  
89941  
BURNER PLATE  
BURNER  
3
N/S  
4
5
"O.P. AMERICA" NAT. PILOT  
"O.P. AMERICA" L.P. PILOT  
#10A x 1/2 SCREW  
COMPRESSION SLEEVE  
COMPRESSION NUT  
PILOT TUBE  
CONTROL BRACKET  
CONTROL VALVE (NATURAL)  
CONTROL VALVE (L.P.)  
#10-32 x 3/8 MACHINE SCREW  
GAS LINE (NATURAL)  
GAS LINE (L.P.)  
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
ROCKER SWITCH  
WIRE ASSEMBLY  
PIEZO IGNITOR  
PIEZO CABLE  
KNOB EXTENSION (ON / OFF)  
KNOB EXTENSION (HI / LOW)  
LOG SUPPORT  
FRONT LOG  
REAR LOG  
CROSS LOG  
N/S = NOT SHOWN  
19  
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TROUBLE SHOOTING  
Turn off and let cool before servicing. Only a qualified service person  
should service and repair heater.  
NOTE: All troubleshooting items are listed in order of operation.  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
• Ignitor electrode positioned wrong  
• Replace ignitor.  
• Ignitor electrode is broken  
• Replace ignitor.  
• Ignitor electrode not connected to ignitor • Reconnect ignitor cable.  
cable.  
When ignitor button is pressed, there is  
no spark at ODS/Pilot.  
• Ignitor cable pinched or wet keep ignitor • Free ignitor cable if pinched by any metal  
cable dry.  
or tubing.  
• Broken ignitor cable  
• Bad piezo ignitor  
• Replace ignitor cable.  
• Replace piezo ignitor.  
• Appliance burning vapors from paint, hair • Ventilate room. Stop using odor-causing  
spray, glues, etc.  
products while heater is running.  
Appliance produces unwanted odors.  
Appliance shuts off in use.  
• Gas leak.  
• Locate and correct all leaks.  
• Not enough fresh air is available for ODS/ • Open window and/or door ventilation  
Pilot to operate.  
• Low line pressure.  
• Contact local gas company.  
• ODS/Pilot is partially clogged.  
• Gas leak.  
• Clean ODS/Pilot.  
• Locate and correct all leaks.  
Gas odor even when control knob is in  
OFF position.  
• Control valve defective.  
• Replace control valve.  
• Gas supply turned off or manual shutoff • Turn on gas supply or open manual shutoff  
valve closed.  
valve.  
• Control knob not in PILOT position.  
• Turn control knob while in PILOT position.  
• Control knob not pressed in while in Pilot • Press in control knob while in PILOT posi-  
When ignitor button is pressed, there is  
spark at ODS/Pilot, but no ignition.  
position  
tion.  
• Air in gas lines when installed.  
• Continue holding down control knob.  
Repeat igniting operation until air is re-  
moved  
• ODS/Pilot is clogged.  
• Replace ODS/pilot assembly or get is  
serviced  
• Gas regulator setting is not correct.  
• Control knob not fully pressed in.  
• Replace gas regulator.  
• Control knob not pressed in long enough. • Press in control knob fully.  
ODS/Pilot lights, but flame goes out when  
control knob is released.  
• After ODS/pilot lights, keep control knob  
pressed in 30 seconds.  
• Manual shutoff valve not fully open.  
• Fully open manual shutoff valve.  
20  
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TROUBLE SHOOTING  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
• Thermocouple connection loose at  
control valve.  
• Hand tighten until snug, then  
tighten 1/4 turn more.  
• Contact local gas company.  
ODS/Pilot lights, but flame goes out  
When control knob is released.  
(continued from page 20)  
• Pilot flame not touching thermocouple,  
which allows thermocouple to cool,  
causing pilot flame to go out. This  
problem could be caused by either  
low gas pressure, or a dirty or partially  
clogged ODS/pilot.  
• Thermocouple damaged.  
• Control valve damaged.  
• Replace thermocouple.  
• Replace control valve.  
• Burner orifice is clogged.  
• Clean burner or replace burner  
orifice.  
One or both burner do not  
light after ODS/pilot is lit.  
• Burner orifice diameter is too small.  
• Inlet gas pressure is too low.  
• Replace burner orifice.  
• Contact qualified service person.  
• Manifold pressure is too low.  
• Burner orifice is clogged.  
• Contact local gas company.  
• Clean burner or replace burner  
orifice.  
Burner backfires during  
combustion.  
• Burner orifice is clogged or damaged.  
• Clean burner or replace burner  
orifice.  
Slight smoke or odor during  
initial operation.  
• Burner is damaged.  
• Replace burner.  
• Gas regulator defective.  
• Replace gas regulator.  
• Vapors from paint or curing process  
of logs.  
• Problem will stop after a few hours  
of operation. Run the heater with  
the damper open if you have one,  
or open a window for the first few  
hours.  
Logs appear to smoke after  
initial operation.  
• Log heater is intended to be  
smokeless. Turn OFF heater and  
call qualified service person.  
• Turning control knob to HIGH  
position when burner is cold.  
• Turn control knob to LOW position  
and let warm up for a minute.  
• Operate burner until air is removed  
from line. Have gas line checked  
by local gas company.  
Heater produces a whistling  
noise when burner is lit.  
• Air in gas line.  
• Clean burner or replace burner  
orifice.  
• Dirty or partially clogged burner  
orifice.  
• LP-regulator shut down due to inlet  
pressure too high.  
• Verify LP tank regulator is  
installed and set to 11" to 13"w.c.  
Replace regulator on heater.  
No gas to pilot.  
Ifthegasqualityisbad,yourpilotmaynotstaylit,theburnersmayproducesoot  
andtheheatermaybackfirewhenlit. Ifthegasqualityorpressureislow,contact  
your local gas supplier immediately.  
21  
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OPTIONAL EQUIPMENT  
INDICATOR  
ON  
OFF  
R
E
M
O
T
E
SKYTECH  
1001  
MODEL: RCK60  
REMOTE CONTROL KIT  
MODEL: WSK60  
WALL SWITCH KIT  
10  
21  
32  
c
50 60 70 80 90  
10  
21  
32  
c
50 60 70 80 90  
MODEL: WTK60  
WALLTHERMOSTATKIT  
22  
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WIRING DIAGRAM FOR BLOWER ASSEMBLY  
1/4"FEMALE INS.  
1/4" MALE INS.  
WHITE  
(NEUTRAL)  
BLACK  
(HOT)  
1/4"FEMALE INS.  
1/4" MALE INS.  
GREEN  
(GROUND)  
BLOWER  
1/4" MALE INS.  
1/4" FEMALE  
INS.  
80426 (12")  
80425 (28")  
1/4"FEMALE INS.  
1/4"FEMALE INS.  
RHEOSTAT  
THERMODISC  
WIRING DIAGRAM FOR GENERATOR ASSEMBLY  
THERMOPILE  
CONTROL  
WIRING  
TERMINALS  
ROCKER  
SWITCH  
23  
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WIRING GUIDE FOR 9947  
The following Wiring Guide is to help assist in the wiring of any combination of the Optional Kit listed below:  
RCK60 - REMOTE CONTROL KIT  
WSK60 - WALL SWITCH KIT  
WTK60 - WALL THERMOSTAT KIT  
IMPORTANT: Before ordering or installing any to the available kits, remember the following...  
1) Not all Optional Kits will work together. Example: The (RCK60) Remote Control Kit,  
the (WSK60) Wall Switch Kit, and the (WTK60) Wall Thermostat Kit cannot be used at the  
time.  
2) When using any of the three Optional Kits listed above, the Rocker Switch on the unit  
must be set to "OFF".  
3) If you choose to use any combination of the above Optional Kits, only one of those kits  
can be used at a time. Example: If you have the Optional Remote Control Kit and the Optional  
Wall Switch Kit, operation of the unit must be controlled by one or the other. If you want to  
use the remote control, simply turn the Wall Switch to "OFF".  
STANDARD WIRING FROM FACTORY:  
CONTROL VALVE  
ROCKER  
SWITCH  
WIRING OF THE RCK60 - REMOTE CONTROL KIT:  
REMOTE CONTROL  
SENSOR  
Remember the Rocker  
Switch must be turned  
to "OFF" while using  
the Remote Control.  
CONTROL VALVE  
ROCKER  
SWITCH  
PIGGYBACK DISCONNECT  
WIRING WITH THE WTK60 - WALL THERMOSTAT KIT:  
WALL  
THERMOSTAT  
Remember the Rocker  
Switch must be turned  
to "OFF" while using  
the Wall Thermostat.  
CONTROL VALVE  
ROCKER  
SWITCH  
PIGGYBACK DISCONNECT  
24  
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WIRING WITH THE WSK60 - WALL SWITCH KIT:  
WALL SWITCH  
Remember the Rocker  
Switch must be turned  
to "OFF" while using  
the Wall Switch.  
CONTROL VALVE  
ROCKER  
SWITCH  
PIGGYBACK DISCONNECT  
WIRING WITH THE WTK60 - WALL THERMOSTAT KIT AND  
THE RCK60 - REMOTE CONTROL KIT:  
Note: When combining these Optional kits, only one kit can be used at a time. Example: If you want to control the  
operation of this unit with the Remote Control then you must turn the Wall Thermostat "OFF". When trying to use two  
Optional kits at once, one will always override the other.  
REMOTE CONTROL  
SENSOR  
WALL  
THERMOSTAT  
PIGGYBACK DISCONNECT  
CONTROL VALVE  
ROCKER  
SWITCH  
WIRING WITH THE WSK60 - WALL SWITCH KIT AND  
THE RCK60 - REMOTE CONTROL KIT:  
Note: When combining these Optional kits you must remember that only one of them can be used at a time. Example:  
If you want to control the operation of this unit with the Remote Control then you must turn the Wall Switch "OFF". When  
trying to use two Optional kits at once, one will always override the other.  
REMOTE CONTROL  
WALL  
SENSOR  
SWITCH  
PIGGYBACK DISCONNECT  
CONTROL VALVE  
ROCKER  
SWITCH  
For further information, contact our Customer Service Department at United States Stove Company, 227 Industrial Park  
Road, P.O. Box 151, South Pittsburg, Tn. 37380. (423)837-2100  
25  
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NOTES  
26  
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LIMITED WARRANTY POLICY  
This vent-free gas heater is warrantied for a period of one year, logs for one  
year, and burners for One Year, from date of purchase against defects in  
material or workmanship. This warranty covers only the cost of defective  
parts and applies only to the original consumer purchaser. The replacement  
of defective parts will be without charge. This warranty does not extend to (1)  
heater damage by accident, neglect, misuse, abuse, alteration, negligence  
of others, including the installation thereof by unqualified installers, (2) the  
costs of removal, reinstallation or transportation of defective parts on the  
heater, or (3) incidental or consequential damage.  
THIS WARRANTY IS EXPRESSLY IN LIEU OF OTHER WARRAN-  
TIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTY OF  
MERCHANTABILITY OF FITNESS FOR PURPOSE AND OF ALL  
OTHEROBLIGATIONSORLIABILITIES, UNITEDSTATESSTOVE  
COMPANY DOES NOT ASSUME FOR IT, ANY OTHER OBLIGA-  
TIONORLIABILITYINCONNECTIONWITHTHESALEORUSEOF  
THIS HEATER.  
The heater (MUST BE INSTALLED BY A QUALIFIED INSTALLER) in  
accordance with the instructions furnished with the unit. The defective heater  
should be returned at your expense to the dealer from whom the product was  
purchased or an authorized service agent. Any products presented for  
warranty repair must be accompanied by a dated proof of purchase. Since  
some states do not allow the exclusion on limitation of incidental or conse-  
quential damages, or on how long an implied warranty lasts, the above  
limitations may not apply to you.  
27  
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OWNERS MANUAL  
HOW TO ORDER REPAIR PARTS OR "OPTIONS"  
THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT, DEPENDABLE  
SERVICEFROMTHEFURNACE, ANDENABLEYOUTOORDERREPAIR  
PARTS CORRECTLY.  
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.  
WHEN WRITING, ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS  
ON THE NAME PLATE ATTACHED TO THE BACK OF THE HEATER.  
WHEN ORDERING REPAIR PARTS OR OPTIONS, ALWAYS GIVE THE  
FOLLOWING INFORMATION AS SHOWN IN THIS LIST:  
1. The PART NUMBER  
2. The PART DESCRIPTION  
3. The MODEL NUMBER: 9947N / 9947L  
4. The SERIAL NUMBER  
BEFORE INSTALLING YOUR HEATER, FILL IN THE SERIAL  
NUMBER IN THE SPACE PROVIDED ABOVE FOR YOUR  
RECORDS.  
UNITED STATES STOVE COMPANY  
227 Industrial Park Rd., P.O. Box 151  
South Pittsburg, TN 37380  
(423) 837-2100  
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REMOVING FRONT SCREEN  
1)Liftthefrontscreenslightlyup(Fig. 2A)andthentiltthebottomofthescreeninwardanddownward(Fig.  
2B). 2) Lean the top of the screen toward you slightly (Fig. 2B) and then proceed to carefully bring the  
screen straight back (Fig. 2C). NOTE: To reinstall the front screen, reverse steps 1 & 2.  
FIG 2A  
FIG 2B  
FIG 2C  
LOG ASSEMBLY  
LOG POSITIONING  
Thisunitissuppliedwithasetoffourceramicfiberlogs. Donothandletheselogswithyourbarehands! Always  
wearglovestopreventskinirritationfromceramicfibers. Afterhandlinglogs,washyourhandsgentlywithsoap  
andwatertoremoveanytracesoffibers.  
PROPER INSTALLATION SEQUENCE:  
1. Installtherearlog(#2)ontherearsetoflocators. Visuallychecktoverifythelogissecurelyplacedonthelocators.  
2. Installthefrontlog(#1)onthefrontlocators. Visuallychecktoverifythelogissecurelyplacedonthelocators.  
3. Installtheleftandrightcrosstwigsasillustrated,onthelocatorpinsprovidedinthefrontandrearlogs.Holes  
providedinthebottomofthecrosstwigsshouldallowthemtoseatcompletelyoverthesepins.  
WARNING: Failure to position the  
partsinaccordancewiththesedia-  
grams or failure to use only parts  
specificallyapprovedwiththisheater  
may result in property damage or  
personalinjury.  
#2  
#1  
FIGURE8.LogSetAssembly  
The positioning of the logs is critical to the safe and clean operation of this heater.  
Sootingandotherproblemsmayresultifthelogsarenotproperlyandfirmlysituated  
in the appliance. Never add additional logs or embellishments such as pine cones,  
vermiculite or rock wool to the heater.  
FRONT SCREEN  
Thefrontscreenmustbeinplaceatalltimeswhentheapplianceisoperating.Donotobstructthescreenedopenings  
oftheheater.  
10  
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OPERATING INSTRUCTIONS  
Avoidanydraftsthataltertheburnerflamepatterns.Donotallowfanstoblowdirectlyintotheheater.Donotplace  
ablowerinsideburnareaoffirebox.Ceilingfansmaycreatedraftsthatalterburnerflamepatterns.Sootingand  
improperburningwilloccur.  
Thisvent-freegasheaterisintendedtobesmokeless.Iflogsappeartosmoke,turnofftheheaterandcallaqualified  
serviceperson.Initialburnoffmaycauseslightsmokeandodorduringthefirstfourhoursofoperation.  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING: If you do not follow these instructions exactly, a fire or explosion may  
result causing property damage, personal injury or loss of life.  
A.  
B.  
Thisapplianceisequippedwithanignitiondevice(piezo)whichautomaticallylightsthepilot. Ifpiezofails,  
thenlightthepilotusingmatches. Refertomatchlightinginstructions(page13). Whenlightingthepilot,  
followtheseinstructionsexactly.  
BEFORELIGHTINGsmellallaroundtheapplianceareaforgas.Besuretosmellnexttothefloorbecause  
somegasisheavierthanairandwillsettleonthefloor.  
WHAT TO DO IF YOU SMELL GAS  
Donotattempttolightanyappliance.  
Donottouchanyelectricswitch;donotuseanyphoneinyourbuilding.  
Immediatelycallyourgassupplierfromaneighbor'sphone.Followthegassupplier'sinstructions.  
Ifyoucannotreachyourgassupplier,callthefiredepartment.  
C.  
D.  
Useonlyyourhandtopushinorturnthegascontrolknob.Neverusetools.Iftheknobwillnotpushinor  
turnbyhand,don'ttrytorepairit,callaqualifiedservicetechnician.Forceorattemptedrepairmayresult  
inafireorexplosion.  
Donotusethisapplianceifanyparthasbeenunderwater.Immediatelycallaqualifiedservicetechnician  
toinspecttheapplianceandtoreplaceanypartofthecontrolsystemandanygascontrolwhichhasbeenunder  
water.  
FOR YOUR SAFETY  
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other  
appliance.  
11  
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OPERATING INSTRUCTIONS  
LIGHTING INSTRUCTIONS  
PILOT LOCATION  
1. STOP! Read the safety information on the  
previous page.  
2. Turn off all electrical power and open the  
access door.  
3. Turnofftherearburnerandsetthefrontburner  
to low.  
4. Push in gas control (knob 1) slightly and turn  
clockwise  
to "OFF".  
TOP VIEW OF BURNER ASSEMBLY  
KNOB 3  
3. REAR BURNER  
6. Push in the control (knob 1) all the way and  
rotate counterclockwise  
to "PILOT".  
The piezo ignitor will light the pilot as the knob  
passes "IGN" traveling to the "PILOT". Con  
tinue to hold the control (knob 1) in for about  
ten (10) seconds after the pilot is lit. Release  
knob and it should pop back up. Pilot should  
remain lit. If it goes out, repeat steps 4 through  
6. If the control (knob 1) does not pop up when  
released, stop and immediately call your ser  
vice technician or gas supplier. If the pilot will  
not stay lit after several tries, turn the gas  
control (knob 1) to "OFF" and call your service  
technician or your gas supplier.  
1. PILOT  
2. FRONT BURNER  
KNOB 2  
KNOB 1  
NOTE: Knob cannot be turned from "PILOT" to  
"OFF" unless knob is pushed in slightly. Do not  
force.  
7. Turn gas control (knob1) counterclockwise  
to "ON".  
8. Set the front burner (knob 2) to the desired  
setting rotating counterclockwise  
MAX. and clockwise to MIN.  
9. Set the rear burner (knob 3) to the desired  
to  
5. Waitfive(5)minutestoclearoutanygas. Then  
smell for gas, including near the floor. If you  
smell gas, STOP! Follow "B" in the safety  
information on the previous page. If you don't  
smell gas, go on to the next step.  
setting rotating counterclockwise  
MAX./ ON or MIN.  
to  
10. Closeaccessdoorandturnonelectricalpower.  
TURN OFF GAS TO APPLIANCE  
1. Open access door.  
2. Set front burner to Min. and turn off the rear burner by depressing knob and rotating clockwise  
until stop.  
3. Unplug all electric power (optional blower) if service is to be performed.  
4. Push in gas control knob slightly and turn clockwise  
5. Close access door.  
to "OFF". Do not force.  
12  
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OPERATING INSTRUCTIONS  
Wait 30 seconds before readjusting the heater when the control has been turned  
down to a lower setting.  
MATCH LIGHTING INSTRUCTIONS  
Ifthepilotwillnotlightusingthepiezoignitor,youcanlightthepilotwithamatch. First,locatethepilot. Thepilot  
islocatedbetweenthetwoburnertubesontherightend(facingtheunit),insidethefirebox. Tolightpilotwitha  
match,movethegascontrol(knob1,pg.12)tothepilotpositionandholddown. Lightmatchandplacenearpilot.  
Oncepilotislit,continuetoholdtheknobforabouttenseconds. Thenfollowsteps7thru10onpage12.  
CHECKING FLAME APPEARANCE  
Flamesfromthepilot,frontandrearburnershouldbevisuallycheckedwhentheheaterisinstalled.Inadditiona  
periodicvisualcheckoftheflamesshouldbemade.  
PILOT FLAME  
Thepilotflameshouldalwaysbepresentwhenthe  
heaterisinoperationandshouldjusttouchthetopof  
thethermocoupletip(FIGURE9).  
Ifthepilotflamedoesnottouchthethermocouple,  
thenthemainburnerisunlikelytofunctionreliably  
(FIGURE10).  
FIGURE10.IncorrectShapeofPilotFlame  
FIGURE9.PilotFlame  
CLEANING / SERVICING  
Annual inspection and cleaning by your dealer or qualified service technician is recommended to prevent  
malfunction and/or sooting.  
Turn off heater and allow to cool before cleaning.  
WARNING  
Remove front screen, (see page 6). Carefully lift screen from locating stubs and set aside during cleaning.  
Refer to instructions on page 6 for installation of screen. Do not operate the unit with the screen  
removed.  
Remove logs, handling carefully by holding gently at each end. Gloves are recommended to prevent skin  
irritation from ceramic. If the skin becomes irritated, wash gently with soap and water. Refer to manual for  
correct log placement.  
13  
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CLEANING / SERVICING  
Periodic Cleaning  
• Do not use cleaning fluid to clean logs or any part of heater.  
• Logs - Brush with soft bristle brush or vacuum with brush attachment.  
• Vacuum loose particles and dust from the front and rear burner, control, and piezo.  
• Inspect burner's and air intake hole. Remove lint or particles with vacuum.  
• External case should be dusted and wiped with a wet soapy cloth.  
Annual Cleaning/Inspection  
• Inspect and clean burner air intake holes.  
• Inspect and clean all burner ports.  
• Inspect ODS pilot for operation and accumulation of lint at air intake holes.  
• Verify flame pattern and log placement for proper operation.  
FLAME APPEARANCE  
• Verify smooth and responsive ignition of main burner and rear burner.  
In normal operation at full rate after 15 minutes the following flame appearance should be observed.  
FLAMES  
The flames behind log #1, and in front of log #2, should be yellow with a blue base. The flames should  
#2  
#1  
not be impinging on the small cross twigs. (See Below, Figure 11)  
FIGURE 11. Flames - Natural Gas and LP Gas  
14  
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HEATER ASSEMBLY REPLACEMENT PARTS  
1
2
3
4
5
13  
6
11  
7
10  
9
12  
8
15  
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PARTS LIST FOR HEATER ASSEMBLY  
KEY  
1
PART #  
69113  
69134  
69065  
69102  
69070  
24469  
69084  
24455  
24457  
89899  
83323  
24536  
89825  
89824  
83172  
DESCRIPTION  
QTY.  
1
CABINET TOP WELDMENT  
FIREBOX BACK WELDMENT  
FIREBOX TOP WELDMENT  
INSIDE BACK WELDMENT  
FIREBOX WELDMENT  
FIREBOX BOTTOM  
2
1
3
1
4
1
5
1
6
1
7
PEDESTAL WELDMENT  
PEDESTAL BASE  
1
8
1
9
CONTROL DOOR  
1
10  
11  
12  
13  
N/S  
N/S  
BRASS KNOB  
1
8-32 x 3/8 PH MACHINE SCREW  
FRONT SCREEN (PAINTED)  
BRASS TRIM  
1
1
2
MAGNETIC LATCH  
1
#10A x 1/2 HX W SM SCREWS  
58  
N/S = NOT SHOWN  
IMPORTANT NOTICE: WHEN ORDERING CABINET PARTS, PLACE THE APPROPRIATE  
CODE AFTER THE PART NUMBER THAT CORRESPONDS TO THE COLOR OF YOUR UNIT.  
ALMOND = A  
CHARCOAL GRAY = C  
GREEN = G  
16  
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BURNER & LOG ASSEMBLY  
17  
11  
1
13  
14  
12  
20  
7
9
8
16  
10  
4
19  
15  
18  
6
3
D
C
B
2
A
5
17  
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PARTS LIST FOR GAS LOG ASSEMBLY  
KEY  
PART #  
24610  
24611  
81189  
81190  
83251  
83244  
83343  
89831  
89834  
89838  
89839  
89840  
24612  
89872  
89873  
83437  
89841  
89842  
89829  
89836  
89830  
89836  
24613  
89826  
89826-1  
89826-2  
89826-3  
89826-4  
89856  
86318  
89855  
DESCRIPTION  
QTY.  
1
2
3
BURNER PLATE  
1
1
1
1
2
2
8
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
-
CONTROL BRACKET  
CONTROL VALVE (NATURAL)  
CONTROL VALVE (L.P.)  
10-24 x 1 SL ROD  
4
5
10-24 KEP NUT  
N/S  
6
#10 X 1/2 HX HD SCREW  
BURNER/CONTROL FITTING  
1/4" TUBE, BURNER/REGULATOR  
1/4 CC X 3/8-27 FITTING  
1/4 COMPRESSION NUT  
1/4 COMPRESSION SLEEVE  
PILOT BRACKET  
7
8
9
10  
11  
12  
"O.P. AMERICA" NAT. PILOT  
"O.P. AMERICA" L.P. PILOT  
#8-1/2 HX HD SCREW (TO MOUNT PILOT)  
3/16 COMPRESSION NUT  
3/16 COMPRESSION SLEEVE  
#47 NATURAL BURNER ORIFICE(FRONT)  
#55 L.P. BURNER ORIFICE (FRONT)  
#48 NATURAL BURNER ORIFICE(REAR)  
#55 L.P. BURNER ORIFICE (REAR)  
BURNER (PAINTED)  
N/S  
13  
14  
15  
16  
17  
18  
a
LOG SET (CONSISTS OF 4 PIECES)  
FRONT LOG  
b
REAR LOG  
-
c
RIGHT TWIG  
-
d
LEFT TWIG  
-
19  
N/S  
20  
3/16" LOXIT FITTING  
1
1FT.  
1
16GA WIRE LINK  
PILOT TUBE  
N/S = NOT SHOWN  
18  
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TROUBLESHOOTING  
Turn off and let cool before servicing. Only a qualified service person should service  
and repair heater.  
NOTE: All troubleshooting items are listed in order of operation.  
POSSIBLE CAUSE  
REMEDY  
OBSERVED PROBLEM  
Ignitor electrode positioned wrong  
Replace ignitor.  
Ignitor electrode is broken  
Replace ignitor.  
Ignitor electrode not connected to ignitor Reconnect ignitor cable.  
cable.  
When ignitor button is pressed, there is no  
spark at ODS/Pilot.  
Ignitor cable pinched or wet keep ignitor Free ignitor cable if pinched by any metal  
cable dry.  
or tubing.  
Broken ignitor cable  
Bad piezo ignitor  
Replace ignitor cable.  
Replace piezo ignitor.  
Appliance burning vapors from paint, hair Ventilate room. Stop using odor-causing  
spray, glues, etc.  
products while heater is running.  
Appliance produces unwanted odors.  
Appliance shuts off in use.  
Gas leak.  
Locate and correct all leaks.  
Not enough fresh air is available for ODS/  
Pilot to operate.  
Open window and/or door ventilation  
Low line pressure.  
Contact local gas company.  
ODS/Pilot is partially clogged.  
Gas leak.  
Clean ODS/Pilot.  
Gas odor even when control knob is in  
OFF position.  
Locate and correct all leaks.  
Control valve defective. Gas supply turned Replace control valve.  
off or manual shutoff valve closed.  
Turnongassupplyoropenmanualshutoff  
valve.  
Control knob not in PILOT position.  
Turn control knob while in PILOT position.  
When ignitor button is pressed, there is  
spark at ODS/Pilot, but no ignition.  
Control knob not pressed in while in Pilot Press in control knob while in PILOT posi-  
position  
tion.  
Air in gas lines when installed.  
Continue holding down control knob. Re-  
peat igniting operation until air is removed  
ODS/Pilot is clogged.  
Replace ODS/pilot assembly or get is  
serviced  
Replace gas regulator.  
Press in control knob fully.  
Gas regulator setting is not correct.  
Control knob not fully pressed in.  
ODS/Pilot lights, but flame goes out when  
control knob is released.  
After ODS/pilot lights, keep control knob  
pressed in 30 seconds.  
Control knob not pressed in long enough.  
Fully open manual shutoff valve.  
Manual shutoff valve not fully open.  
19  
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TROUBLESHOOTING, CONTINUED...  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Thermocouple connection loose at  
control valve.  
Hand tighten until snug, then  
tighten 1/4 turn more.  
Contact local gas company.  
ODS/Pilot lights, but flame goes out  
When control knob is released.  
(continued from page 17)  
Pilot flame not touching thermocouple,  
which allows thermocouple to cool,  
causing pilot flame to go out. This  
problem could be caused by either  
low gas pressure, or a dirty or partially  
clogged ODS/pilot.  
Thermocouple damaged.  
Control valve damaged.  
Replace thermocouple.  
Replace control valve.  
Burner orifice is clogged.  
Clean burner or replace burner  
orifice.  
One or both burner do not  
light after ODS/pilot is lit.  
Burner orifice diameter is too small.  
Inlet gas pressure is too low.  
Replace burner orifice.  
Contact qualified service person.  
Manifold pressure is too low.  
Burner orifice is clogged.  
Contact local gas company.  
Clean burner or replace burner  
orifice.  
Burner backfires during  
combustion.  
Burner orifice is clogged or damaged.  
Clean burner or replace burner  
orifice.  
Slight smoke or odor during  
initial operation.  
Burner is damaged.  
Replace burner.  
Gas regulator defective.  
Replace gas regulator.  
Vapors from paint or curing process  
of logs.  
Problem will stop after a few hours  
of operation. Run the heater with  
the damper open if you have one,  
or open a window for the first few  
hours.  
Logs appear to smoke after  
initial operation.  
Log heater is intended to be  
smokeless. Turn OFF heater and  
call qualified service person.  
Turning control knob to HIGH (3)  
position when burner is cold.  
Turn control knob to LOW (2)  
position and let warm up for a  
minute.  
Heater produces a whistling  
noise when burner is lit.  
Air in gas line.  
Operate burner until air is removed  
from line. Have gas line checked  
by local gas company.  
Clean burner or replace burner  
orifice.  
Dirty or partially clogged burner  
orifice.  
LP-regulator shut down due to inlet  
pressure too high.  
Verify LP tank regulator is  
installed and set to 11" to 13"w.c.  
Replace regulator on heater.  
No gas to pilot.  
If the gas quality is bad, your pilot may not stay lit, the burners may produce soot  
and the heater may backfire when lit. If the gas quality or pressure is low, contact  
your local gas supplier immediately.  
20  
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OPTIONAL F40 BLOWER KIT  
THIS OPTIONAL F40 BLOWER KIT IS AVAILABLE WHERE YOU PURCHASED THIS  
HEATER OR YOU CAN ORDER DIRECT FROM THE FACTORY BY CONTACTING  
THE PARTS DEPARTMENT AT THE NUMBER AND ADDRESS ON THE BACK  
PAGE OF THIS MANUAL.  
BACK VIEW OF 9740  
21  
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NOTES  
22  
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LIMITED WARRANTY POLICY  
This vent-free gas heater is warrantied for a period of one year, logs for one  
year, and burners for One Year, from date of purchase against defects in  
material or workmanship. This warranty covers only the cost of defective  
parts and applies only to the original consumer purchaser. The replacement  
of defective parts will be without charge. This warranty does not extend to (1)  
heater damage by accident, neglect, misuse, abuse, alteration, negligence of  
others, including the installation thereof by unqualified installers, (2) the costs  
of removal, reinstallation or transportation of defective parts on the heater, or  
(3) incidental or consequential damage.  
THIS WARRANTY IS EXPRESSLY IN LIEU OF OTHER WARRAN-  
TIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTY OF  
MERCHANTABILITY OF FITNESS FOR PURPOSE AND OF ALL  
OTHEROBLIGATIONSORLIABILITIES, UNITEDSTATESSTOVE  
COMPANY DOES NOT ASSUME FOR IT, ANY OTHER OBLIGA-  
TIONORLIABILITYINCONNECTIONWITHTHESALEORUSEOF  
THIS HEATER.  
The heater (MUST BE INSTALLED BY A QUALIFIED INSTALLER) in  
accordance with the instructions furnished with the unit. The defective heater  
should be returned at your expense to the dealer from whom the product was  
purchased or an authorized service agent. Any products presented for  
warranty repair must be accompanied by a dated proof of purchase. Since  
some states do not allow the exclusion on limitation of incidental or conse-  
quential damages, or on how long an implied warranty lasts, the above  
limitations may not apply to you.  
23  
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OWNERS MANUAL  
HOW TO ORDER REPAIR PARTS OR "OPTIONS"  
THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT, DEPENDABLE  
SERVICEFROMTHEFURNACE, ANDENABLEYOUTOORDERREPAIR  
PARTS CORRECTLY.  
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.  
WHEN WRITING, ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS  
ONTHENAMEPLATEATTACHEDINSIDETHEFRONTOFTHEHEATER.  
WHEN ORDERING REPAIR PARTS OR OPTIONS, ALWAYS GIVE THE  
FOLLOWING INFORMATION AS SHOWN IN THIS LIST:  
1. The PART NUMBER  
2. The PART DESCRIPTION  
3. The MODEL NUMBER: 9740N / 9740L  
4. The SERIAL NUMBER  
BEFORE INSTALLING YOUR HEATER, FILL IN THE SERIAL  
NUMBER IN THE SPACE PROVIDED ABOVE FOR YOUR  
RECORDS.  
UNITED STATES STOVE COMPANY  
227 Industrial Park Rd., P.O. Box 151  
S
C
U S  
South Pittsburg, TN 37380  
(423) 837-2100  
P
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