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.

6
ITEMS REQUIRED FOR INSTALLATION
Ensure that the following items are available before proceeding with installation:
• External regulator (for propane/LPG only) • Manual cutoff valve
• Piping which complies with local codes • Sediment trap
• Pipe sealant approved for use with • Pipe wrench
propane / LPG (resistant to sulfur compounds)
ITEMS REQUIRED FOR INSTALLATION
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. National Fire Protection Association, Inc.
1430 Broadway or Batterymarch Park
NewYork, NY 10018 Quincy, MA 02269
WARNING
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
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.
11

The following formula can be used to determine the maximum
heaterrating per thedefinitionofunconfinedspace:
BTU/HR = (L1+L2) Ft x (W) Ft x (H) Ft x 1000
50
Considertwoconnectingroomswithanopenareabetween,
with the following dimensions:( See Fig. 2, Example)
L1=15-1/2 Ft., L2=12 Ft., W=12 ft., H=8Ft
50
=52800BTU/HR
Iftherewereadoorbetweenthetworoomsthecalculationwould
be based only on the room with the heater.
BTU/HR=(15-1/2)x(12) x (8) x1000
50
=29760BTU/HR
7
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.
FIGURE 3. Minimum Clearances
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.
WARNINGWARNING WARNING
Minimum clearances to
combustibles:
Top of heater...............................36"
RightSideof heater.....................15"
Left Side of heater.........................8"
Frontofheater.............................42"
Rear of heater...............................4"
Maintaintheseclearances
toensureadequatespace
around air opening for
properoperation.
Iftheareainwhichtheheatermaybeoperatedissmallerthanthatdefinedasan
unconfined space or if the building is of unusually tight construction, provide
adequatecombustionandventilationairbyoneofthemethodsdescribedinthe
National Fuel Gas Code,ANSI Z223.1,Section 5.3,or applicable local codes.
INSTALLATION

8
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.
MANTEL CLEARANCES
BACK WALL
MANTEL SHELF
DISTANCE TO
UNDERSIDE OF
MANTEL
UNDERSIDE OF
MANTEL SHELF
TOP OF HEATER
MINIMUM CLEARANCE
TO BACK WALL
FLOOR
ALL MINIMUM
DISTANCES ARE
IN INCHES
MINIMUM MANTEL CLEARANCES
Figure 4.

9
Connecting directly to an unregulated propane/LPG tank can cause an explosion.
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.
IMPORTANT:Loosenthepipeadapter
on the flex tube before installing to the
system piping.
FIGURE 5. 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.
Amanualshutoff valve, unionandplugged 1/8"NPTpressure tapping pointmustbe
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).
CAUTION NOTICE
GAS CONNECTION
TO HEATER
CONTROL VALVE STAINLESS
FLEXIBLE TUBE
PIPE
COUPLING
PIPE
MANUAL
SHUTOFF VALVE
TEE JOINT
PIPE NIPPLE
CAP
SEDIMENT TRAP
WARNING

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
GAS CONNECTION
GAS PRESSURE CHECK
FIGURE 6. Rear View of 9947 Vent-Free Gas Heater
Gas Inlet Connection (3/8" NPT)
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.

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:
LOG ASSEMBLY
Thepositioningofthelogsiscriticaltothesafeandcleanoperationofthis
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.
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
REMOVING FRONT SCREEN
FIGURE9.LogSetAssembly
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.
WARNING
11

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.
WARNING: If you do not follow these instructions exactly, a fire or
explosionmayresultcausingpropertydamage,personalinjuryorlossof
life.
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.
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.
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.
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 READ BEFORE LIGHTING
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
FOR YOUR SAFETY
WARNING
C.
D.
A.
B.
OPERATING INSTRUCTIONS
12

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. Pushingascontrol(B)slightlyandturnclock
wise to "OFF".
5. Push "ON / OFF" switch to "OFF" position.
NOTE: Knob cannot be turned from "PILOT" to
"OFF" unless knob is pushed in slightly. Do not
force.
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
clockwise to "Pilot".
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
thepilot islit. Releaseknobanditwillpopback
up.Pilotshouldremainlit. Ifitgoesout,
repeatsteps4through8.
OPERATING INSTRUCTIONS
TOP VIEW OF BURNER ASSEMBLY
13
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.
9. Turn valve knob clockwise to "ON".
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: If unit is equipped with remote "on-off"
wall switch, switch must be in "on" position for
burner to light.
11. Adjustflameheightwiththehigh-lowknob(C).
12. Turn on all electrical power to the appliance.
13. Close access door.
NOTE: It is normal for the new heater to give off
someodorthefirsttimeitisburned. Thisisdueto
thecuringofthepaintandanyundetectedoilfrom
the manufacturing process.
Itisrecommendedthatyouburnyournewheater
foratleasttwo(2)hoursthefirsttimeyouuseit.If
optional fan kit is installed, leave it turned off for
the break in period.
LIGHTING INSTRUCTIONS
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 to the "OFF" position.
5. Close access door.
TURN OFF GAS TO APPLIANCE
C
A
BD

Annual inspection and cleaning by your dealer or qualified service technician is recommended to
prevent malfunction and/or sooting.
Remove front screen, (see page 11). Carefully lift screen from locating stubs and set aside during
cleaning.Refertoinstructionsonpage11 for installationofscreen.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.
PILOT FLAME
Thepilotflame should always be presentwhen
the heater is in operation and should just touch
the top of the thermocouple tip (FIGURE 10).
FIGURE 10. Pilot Flame
If the pilot flame does not touch the thermo-
couple,thenthemainburner is unlikely to func-
tion reliably (FIGURE 11).
FIGURE 11. Incorrect Shape of Pilot Flame
Wait30secondsbeforereadjustingtheheaterwhenthecontrolhasbeen
turned down to a lower setting.
WARNING
MATCH LIGHTING INSTRUCTIONS
Ifthepilotwillnotlightusingthepiezoignitor,youcanlightthepilotwithamatch. First,locatethepilot.
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
Flamesfrom the pilot, and burnershould be visually checked whenthe heater is installed. In addition
a periodic visual check of the flames should be made.
OPERATING INSTRUCTIONS
CLEANING / SERVICING
WARNING Turn off heater and allow to cool before cleaning.
14

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)
Figure 12. Flames - Natural Gas and LP Gas
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.
FLAMEAPPEARANCE
#1
#2
CLEANING / SERVICING
15

HEATER ASSEMBLY
16

KEY PART NO. DESCRIPTION QTY.
1 24775 Pedestal 1
2 24776 Pedestal Trim 1
3 24878 Pedestal Brace 1
4 69243 Firebox Bottom 1
5 24779 Firebox 1
6 69248 Firebox Inner Top 1
7 24782 Firebox Outer Top 1
8 24780 Front 1
9 24783 Blower Box 1
10 24784 Cabinet Back 1
11 24785 Right Side, Cabinet Door 1
12 24786 Left Side, Cabinet 1
13 24787 Control Cover Box 1
14 24879 Latch Bracket 1
15 24880 Front Screen Retainer 1
16 24790 Front Trim, Top & Bottom 2
17 24791 Front Trim, Side 2
18 24789 Cabinet Top 1
19 24792 Louver Frame 1
20 89933 Long Louver 2
21 89934 Short Louver 4
22 24795 Front Screen 1
23 24794 Side Screen 2
24 86483 Thermodisc Bracket 1
25 80381 Thermodisc 1
N/S 83351 #8 x 3/8 Hex Head Screw 2
26 89824 Latch 2
27 89811 Hinge 2
28 89943 Knob, Cabinet Door 1
29 24796 Support, Right Cabinet 1
N/S 83172 #10A x 1/2 Hex Head Screw 93
30 83888 120 CFM Blower 1
31 83278 #10 Flat Washer 4
32 83244 10-24 Kep Nut 4
33 80090 Rheostat w/Nut 1
• • Rheostat Knob (Included with Rheostat) 1
34 80232 Power Supply Cord 1
N/S 89390A Rubber Grommet 3
N/S 80109 Strain Relief Bushing 1
N/S 83005 #10-24 x 1/2 Machine Screw 5
N/S 80425 Wire Assembly (28" black wire) 1
N/S 80426 Wire Assembly (12" black wire) 1
PARTS LIST
17
N/S = Not Shown

BURNER AND LOG ASSEMBLY
14
4
2
18
20
19
11
8
9
18
3
5
6
13
16
15
1
12
7
17
10

KEY PART NO. DESCRIPTION QTY.
1 24777 BURNER PLATE 1
2 89920 BURNER 1
3 89921 "O.P. AMERICA" NAT. PILOT 1
• 89922 "O.P. AMERICA" L.P. PILOT 1
N/S 83172 #10A x 1/2 SCREW 7
4 89842 COMPRESSION SLEEVE 1
5 89841 COMPRESSION NUT 1
6 81201 PILOT TUBE 1
7 24788 CONTROL BRACKET 1
8 81198 CONTROL VALVE (NATURAL) 1
• 81202 CONTROL VALVE (L.P.) 1
9 83464 #10-32 x 3/8 MACHINE SCREW 4
10 89918 GAS LINE (NATURAL) 1
• 89923 GAS LINE (L.P.) 1
11 C42373 ROCKER SWITCH 1
12 80376 WIRE ASSEMBLY 2
13 89761 PIEZO IGNITOR 1
14 80423 PIEZO CABLE 1
15 81199 KNOB EXTENSION (ON / OFF) 1
16 81200 KNOB EXTENSION (HI / LOW) 1
17 24888 LOG SUPPORT 2
18 89940 FRONT LOG 1
19 89939 REAR LOG 1
20 89941 CROSS LOG 1
N/S = NOT SHOWN
PARTS LIST
19

NOTE: All troubleshooting items are listed in order of operation.
REMEDYPOSSIBLE CAUSE
When ignitor button is pressed, there is
no spark at ODS/Pilot.
• Ignitor electrode positioned wrong
• Ignitor electrode is broken
• Ignitor electrode not connected to ignitor
cable.
• Ignitor cable pinched or wet keep ignitor
cable dry.
• Broken ignitor cable
• Bad piezo ignitor
• Replace ignitor.
• Replace ignitor.
• Reconnect ignitor cable.
•Freeignitorcableifpinchedbyanymetal
or tubing.
• Replace ignitor cable.
• Replace piezo ignitor.
• Ventilate room. Stop using odor-causing
products while heater is running.
• Locate and correct all leaks.
• Appliance burning vapors from paint, hair
spray, glues, etc.
• Gas leak.
Appliance produces unwanted odors.
• Not enough fresh air is available for ODS/
Pilot to operate.
• Low line pressure.
• ODS/Pilot is partially clogged.
• Open window and/or door ventilation
• Contact local gas company.
• Clean ODS/Pilot.
Appliance shuts off in use.
• Gas leak.
• Control valve defective.
• Locate and correct all leaks.
• Replace control valve.
Gas odor even when control knob is in
OFF position.
• Gas supply turned off or manual shutoff
valve closed.
• Control knob not in PILOT position.
• Control knob not pressed in while in Pilot
position
• Air in gas lines when installed.
• ODS/Pilot is clogged.
• Gas regulator setting is not correct.
•Turnongassupplyoropenmanualshutoff
valve.
• Turn control knob while in PILOT position.
• Press in control knob while in PILOT posi-
tion.
• Continue holding down control knob.
Repeat igniting operation until air is re-
moved
• Replace ODS/pilot assembly or get is
serviced
When ignitor button is pressed, there is
spark at ODS/Pilot, but no ignition.
• Control knob not fully pressed in.
• Control knob not pressed in long enough.
• Manual shutoff valve not fully open.
• Replace gas regulator.
• Press in control knob fully.
• After ODS/pilot lights, keep control knob
pressed in 30 seconds.
• Fully open manual shutoff valve.
ODS/Pilotlights,butflamegoes outwhen
control knob is released.
TROUBLE SHOOTING
Turn off and let cool before servicing. Only a qualified service person
should service and repair heater.
WARNING
OBSERVED PROBLEM
20