United States Stove Gas Heater B9945L User Manual

UNITED STATES STOVE COMPANY  
227 Industrial Park Road • P.O. Box 151 • South Pittsburg, TN 37380 • (423) 837-2100  
Natural Gas Model  
B9945N  
Propane (LPG) Model  
B9945L  
VENT-FREE PEDESTAL GAS HEATER  
INSTALLATION AND OPERATION INSTRUCTIONS  
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 of 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  
WARNING:  
• Do not try to light any appliance.  
Do not use a blower insert,  
heat exchanger insert or other  
accessories not approved  
for use with this heater.  
• 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.  
Save this manual for  
future reference.  
851369B 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.  
2.  
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.  
The installation must conform with local codes or, in the absence of local codes, with the National  
Fuel Gas Code, ANSI Z223.1.  
3.  
4.  
5.  
The 9945N/9945L vent-free gas heater system cannot be installed in a bedroom.  
Do not install the heaters in a bathroom.  
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.  
6.  
Topreventmalfunctionand/orsooting, anunventedgasheatershouldbecleanedatleastannually  
byaprofessionalserviceperson.Morefrequentcleaningmayberequiredduetoexcessivelintfrom  
carpeting, etc. It is imperative that control compartments, burners and circulating air passageways  
be kept clean.  
7.  
8.  
9.  
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.  
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.  
This is an 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.  
10.  
11.  
Children and adults should be alerted to the hazard of high surface temperature and should stay  
away to avoid burns or clothing ignition.  
Young children should be carefully supervised when they are in the room with the appliance.  
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IMPORTANT SAFETY INFORMATION  
12. Do not place clothing or other flammable material near the appliance.  
13. Keep appliance area clear and free from combustible materials, gasoline and other flammable  
vapors and liquids.  
14. Any safety screen or guard removed for servicing must be replaced prior to operating the heater.  
15. 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.  
16. 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 for each 1,000 feet above sea level.  
Refer to the National Fuel Gas Code.  
17. The appliance and its appliance main gas 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).  
18. The appliance must be isolated from the gas supply piping system by closing its equipment shutoff  
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).  
19. Do not use this room 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 which has been under water.  
PRODUCT FEATURES  
Features:  
• Heating Efficiency - 99.9%  
• Wide BTU Range: 27,000 - 39,900.  
• Safe Operation - Oxygen Depletion Sensor (ODS).  
• No Electricity Required.  
• Fiber Ceramic Logs.  
• Push-Button Piezo Ignitor.  
• Clean Operation.  
• Wide Bay Front.  
• Easy Operation.  
• Heats up to 1,200 square feet.  
FIGURE1.9945Vent-FreePedestal  
GasHeater.  
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SPECIFICATIONS  
NaturalGas  
ManifoldPressureSetting4"w.c.  
GasInletPressure  
Maximum10-1/2"w.c.  
Minimum 5" w.c.  
Number  
GasRate  
Max BTU/Hr Min BTU/Hr  
39,900 27,000  
Model Number  
9945N  
Type  
Manual  
ofBurners  
1
Propane/LPG  
Note:Anexternalregulatorisrequiredtoreducesupplypressuretoamaximumof13"w.c.  
ManifoldPressureSetting10"w.c.  
GasInletPressure  
Maximum13"w.c.  
Minimum11"w.c.  
Number  
GasRate  
Model Number  
9945L  
Type  
Manual  
Max BTU/Hr  
39,900  
Min BTU/Hr  
ofBurners  
27,000  
1
Controls - Main control has 4 positions:  
1. OFF - All gas to the burner 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  
9945Land9945NUnventedGasHeaters  
1. PacketcontainingHomeowners/Installationinstructions.  
2. Three(3)individuallywrappedfiberceramiclogs,refertoinstallationinstructions.  
3. Unventedgasheater.  
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.  
Carefullyinspectthecontentsforshippingdamageandimmediatelyinformyourdealerifanydamageisfound.  
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ITEMS REQUIRED FOR INSTALLATION  
ITEMS REQUIRED FOR INSTALLATION  
Ensurethatthefollowingitemsareavailablebeforeproceedingwithinstallation:  
Externalregulator(forpropane/LPGonly)  
Pipingwhichcomplieswithlocalcodes  
Pipesealantapprovedforusewith  
Manualshutoffvalve  
Sedimenttrap  
Pipewrench  
propane/LPG(resistanttosulfurcompounds)  
CODES  
Adheretoalllocalcodesorintheirabsence,thelatesteditionofTHENATIONALFUELGASCODEANSIZ223.1  
orNFPA54whichcanbeobtainedfrom:  
AmericanNationalStandardsInstitute,Inc.  
1430Broadway  
NationalFireProtectionAssociation,Inc.  
BatterymarchPark  
or  
NewYork,NY10018  
Quincy,MA02269  
Duetohightemperatures,donotinstalltheheater:  
• Wherecurtains,furniture,clothingorotherflammableobjectsarelessthan42"  
fromthefrontoftheheater.  
• Inhightrafficareas.  
• Inwindyordraftyareas.  
DO NOT PLACE CLOTHING OR OTHER FLAMMABLE MATERIAL ON OR NEAR THE  
APPLIANCE.  
ADEQUATE COMBUSTION AND VENTILATION AIR  
This heater shall not be installed in a confined space or unusually tight construction unless provisions are  
provided for adequate combustion and ventilation air.  
Unusually tight construction is defined as construction where:  
(a) Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder  
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  
for plumbing, electrical,  
plates and floors, between wall-ceiling joints, between wall panels, at penetrations  
and gas lines, and at other openings.  
The National Fuel3Gas Code defines a confined space as a space whose volume is less than 50 cubic  
feet per 1,000 BTU per hour (4.8m 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 (4.8m 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  
furnished with doors, are considered a part of the unconfined space.  
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INSTALLATION  
Thefollowingformulacanbeusedtodeterminethemaximum  
heaterratingperthedefinitionofunconfinedspace:  
BTU/HR = (L1+L2) Ft x (W) Ft x (H) Ft x 1000  
50  
Considertwoconnectingroomswithanopenareabetween,  
withthefollowingdimensions:(SeeFig.2,Example)  
L1=15-1/2Ft.,L2=12Ft.,W=12ft.,H=8Ft  
50  
H (8')  
L2 (12')  
=52800BTU/HR  
W (12')  
L1 (15-1/2')  
Iftherewereadoorbetweenthetworoomsthecalculation  
wouldbebasedonlyontheroomwiththeheater.  
BTU/HR=(15-1/2)x(12)x(8)x1000  
50  
FIGURE 2.  
=29760BTU/HR  
Wheninstallingtheappliancedirectlyoncarpeting,tileorothercombustible  
material,otherthanwoodflooring,theappliancemustbeinstalledonametalor  
woodpanelextendingthefullwidthanddepthoftheappliance.  
Iftheareainwhichtheheatermaybeoperatedissmallerthanthatdefinedasan  
unconfinedspaceorifthebuildingisofunusuallytightconstruction,provide  
adequatecombustionandventilationairbyoneofthemethodsdescribedinthe  
NationalFuelGasCode,ANSIZ223.1,Section5.3,orapplicablelocalcodes.  
Ensure the minimum clearances shown in FIGURE 3 are maintained for  
accessibilityforpurposesofservicingandproperoperation.Leftandright  
clearancesaredeterminedwhenfacingthefrontoftheheater.  
Maintaintheseclearancesto  
ensure adequate space  
around air opening for  
36"  
8"  
properoperation.  
8"  
Minimumclearancestocombustibles:  
Topofheater....................................36"  
Sidesofheater....................................8"  
Frontofheater..................................42"  
Rearofheater.....................................4"  
42"  
4"  
FIGURE3.MinimumClearances  
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MANTEL CLEARANCES  
Ifplacingacustommantelabovetheheater,youmustmeetminimumclearancesbetweenmantel  
shelfandthetopoftheheater.  
Ifyourinstallationdoesnotmeetthebelowminimumclearances,youmust:  
Raisethemanteltoanacceptableheight,OR  
Removethemantel.  
UNDERSIDEOF  
MANTEL SHELF  
MANTEL SHELF  
DISTANCETO  
UNDERSIDEOF  
MANTEL  
TOPOFHEATER  
ALL MINIMUM  
DISTANCESARE  
IN INCHES  
FLOOR  
MINIMUM CLEARANCE  
TO BACK WALL  
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GAS CONNECTION  
Aqualifiedgasapplianceinstallermustconnectthefireplacetothegassupply.  
Consultalllocalcodes.  
Usenewblackironorsteelpipeonly.Internallytinnedcoppertubingcanbeusedinsomeareas  
whenpermittedbylocalcodes.Onlyusepipeof1/2"orgreaterdiametertoallowfullgas  
volumetoheater.Excessivepressurelosswilloccurifthepipeistoosmall.  
Amanualshutoffvalve,unionandplugged1/8"NPTpressuretappingpointmustbeinstalled  
upstreamoftheheater(FIGURE4).  
Asedimenttrapmustbeinstalledupstreamoftheheatertopreventmoistureandcontaminants  
frompassingthroughthepipetotheheatercontrolsandburners.Failuretodosocould  
preventtheheaterfromoperatingreliably(FIGURE4).  
IMPORTANT:Loosenthepipeadapter  
on the flex tube before installing to the  
systempiping.  
TO HEATER  
STAINLESS  
CONTROL VALVE  
FLEXIBLE TUBE  
PIPE  
MANUAL  
SHUTOFF VALVE  
PIPE  
COUPLING  
TEE JOINT  
SEDIMENT TRAP  
PIPE NIPPLE  
CAP  
FIGURE5.GasConnection  
CHECKGASTYPE:Thegassupplymustbethesameasstatedonheater'sratingplate.Ifthegassupplyis  
different,DONOTINSTALLtheheater.Contactyourdealerforthecorrectmodel.  
Connectingdirectlytoanunregulatedpropane/LPGtankcancauseanexplosion.  
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GAS CONNECTION  
The gasinletconnectionis3/8"NPT,madeat  
thesideofthemaincontrolthroughtheareaat  
therearofthepedestal.  
Testallgasjointsfromthegasmetertothe  
heaterforleaksusingsoapandwatersolution  
aftercompletingconnection.DONOTUSE  
AN OPEN FLAME.  
GasInletConnection(3/8"NPT)  
FIGURE6.RearViewof9945Vent-FreeGasHeater  
GASPRESSURECHECK  
Theheaterregulatorcontrolstheburnerpressurewhichshouldbecheckedatthepressuretestpointlocatedonthe  
frontofthemaincontrolandisaccessiblethroughthefrontoftheheater.(seeFIGURE6).  
Thepressureshouldbecheckedwiththeheaterburningandthecontrolsettohigh(HI).  
Thepressureregulatorispresetandlockedtoavoidtampering.IfthepressureisnotasspecifiedinProduct  
Specifications(Page5),contactyourdealerandreplacetheregulator.  
FIGURE7.PressureTestPointLocation  
10  
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REMOVING FRONT SCREEN  
1)Removethetwo(2)screwsandliftthefrontscreenslightlyup.(Fig.7A) Thentiltthebottomofthescreen  
inward and downward. (Fig. 7B) 2) Lean the top of the screen toward you slightly (Fig. 7B) and then  
proceed to carefully bring the screen straight back (Fig. 7C). NOTE: To reinstall the front screen, reverse  
steps 1 & 2.  
FIG 7A  
FIG 7B  
FIG 7C  
LOG ASSEMBLY  
LOG POSITIONING  
Donothandletheselogswithyourbarehands! Alwayswearglovestopreventskinirritationfromceramicfibers.  
Afterhandlinglogs,washyourhandsgentlywithsoapandwatertoremoveanytracesoffibers.  
PROPER INSTALLATION SEQUENCE:  
WARNING: Failure to position the  
partsinaccordancewiththesedia-  
grams or failure to use only parts  
specificallyapprovedwiththisheater  
may result in property damage or  
personalinjury.  
FIGURE8.LogSetAssembly  
Thepositioningofthelogsiscriticaltothesafeandcleanoperationofthisheater.  
Sootingandotherproblemsmayresultifthelogsarenotproperlyandfirmly  
situatedintheappliance.Neveraddadditionallogsorembellishmentssuchas  
pinecones,vermiculiteorrockwooltotheheater.  
11  
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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:Ifyoudonotfollowtheseinstructionsexactly,afireorexplosionmay  
resultcausingpropertydamage,personalinjuryorlossoflife.  
A.  
B.  
Thisapplianceisequippedwithanignitiondevice(Piezo)whichautomaticallylightsthepilot. IfPiezofails,  
thenlightthepilotusingmatches. Refertomatchlightinginstructions(page14). 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.  
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.  
3. Turn off all electrical power and open the  
access door.  
4. 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
Ifthepilotdoesnotpopupwhenreleased, stop  
and immediately call your service technician  
or 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".  
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.  
C
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. 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.  
11. Adjust flame height with the high-low knob (C).  
12. Turn on all electrical power to the appliance.  
13. Close access door.  
7. Depressknob(B)andturngascontrolknob  
counterclockwise  
to "Pilot".  
NOTE: It is normal for the new heater to give off  
some odor the first time it is burned. This is due to  
the curing of the paint and any undetected oil from  
the manufacturing process.  
Itisrecommendedthatyouburnyournewheaterfor  
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 the pilot  
islit. Releaseknobanditwillpopbackup. Pilot  
shouldremainlit. Ifitgoesout,repeatsteps4  
through8.  
TURN OFF GAS TO APPLIANCE  
1. Open access door.  
2. Turn switch (D) to "OFF"  
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 the "OFF" position.  
13  
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OPERATING INSTRUCTIONS  
Wait30secondsbeforereadjustingtheheaterwhenthecontrolhasbeenturned  
downtoalowersetting.  
MATCH LIGHTING INSTRUCTIONS  
Ifthepilotwillnotlightusingthepiezoignitor,youcanlightthepilotwithamatch. First,locatethepilot. Thepilot  
islocatedbetweentheburnertubeontherightend(facingtheunit),insidethefirebox. Tolightpilotwithamatch,  
movethegascontrol(knobB,pg.13)tothepilotpositionandholddown. Lightmatchandplacenearpilot. Once  
pilotislit,continuetoholdtheknobforabouttenseconds. Thenfollowsteps9thru13onpage13.  
CHECKING FLAME APPEARANCE  
Flamesfromthepilotandburnershouldbevisuallycheckedwhentheheaterisinstalled. Inaddition,aperiodic  
checkoftheflamesshouldbemade.  
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.  
Turnoffheaterandallowtocoolbeforecleaning.  
WARNING  
Removefrontscreen,(seepage11).Carefullyliftscreenfromlocatingstubsandsetasideduringcleaning.  
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.  
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 between log #2, should be yellow with a blue base. (See Below,  
Figure 11)  
#2  
#1  
FIGURE 11. Flames - Natural Gas and LP Gas  
15  
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HEATER ASSEMBLY REPLACEMENT PARTS  
9
7
18  
10  
6
19  
17  
3
5
8
16  
15  
2
13  
14  
12  
4
11  
1
20  
16  
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PARTS LIST FOR HEATER ASSEMBLY  
KEY  
1
PART #  
B24767  
B69198  
24891  
24768  
24772  
B24769  
24771  
24770  
B24773  
24774  
B24457  
89899  
83323  
24800  
24799  
69236  
89916  
89917  
89824  
83343  
24892  
24886  
DESCRIPTION  
QTY.  
1
BASE  
2
PEDESTALWELDMENT  
FIREBOX BOTTOM (NATURAL)  
FIREBOXBOTTOM(L.P.PROPANE)  
FIREBOXWRAPPER  
1
3
1
4
1
5
1
6
CABINETWRAPPER  
FIREBOX TOP  
1
7
1
8
FRONT  
1
9
CABINET TOP  
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
N/S  
N/S  
19  
20  
LOUVERFRAME  
1
CONTROLDOOR  
1
BRASSKNOB  
1
8-32x3/8MACHINESCREW  
WINDOW FRAME BRACKET (BOTTOM)  
WINDOW FRAME BRACKET (TOP)  
WINDOW FRAME ASSEMBLY  
EXTRUDED LOUVER (LONG)  
EXTRUDEDLOUVER(SHORT)  
MAGNETIC LATCH  
1
2
2
1
2
4
1
#10x1/2HXHDSCREWS  
HEAT SHIELD  
86  
2
ROCKERSWITCHBRACKET  
1
N/S = NOT SHOWN  
17  
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BURNER & LOG ASSEMBLY  
17  
15  
16  
11  
1
12  
5
14  
4
6
3
2
10  
9
7
13  
8
18  
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PARTS LIST FOR GENERATOR AND LOG ASSEMBLY  
KEY  
1
PART #  
24777  
24881  
81198  
81202  
83464  
89937  
89938  
83172  
89921  
89922  
89855  
89856  
89841  
89842  
89920  
C42373  
80376  
24888  
89939  
89940  
89941  
DESCRIPTION  
QTY.  
1
BURNERPLATE  
2
CONTROLBRACKET  
2
3
CONTROL VALVE (NATURAL)  
CONTROL VALVE (LIQUID PROPANE)  
10-32x3/8PHHDMACHINESCREW  
BURNERGASLINE(#31ORIFICE-NAT.)  
BURNERGASLINE(#49ORIFICE-L.P.)  
#10A x 1/2 HX HD SCREW (2 to MOUNT PILOT)  
"O.P. AMERICA" NAT. PILOT  
"O.P. AMERICA" L.P. PILOT  
PILOT TUBE (11")  
1
-
1
4
4
5
1
-
1
N/S  
6
11  
1
-
1
7
1
8
3/16" LOXIT FITTING  
1
9
3/16"COMPRESSIONNUT  
3/16"COMPRESSIONSLEEVE  
BURNER  
1
10  
11  
12  
13  
14  
15  
16  
17  
1
1
ROCKERSWITCH  
1
WIRE ASSEMBLY  
1
LOGSUPPORT  
2
REARUNILOG  
1
FRONTLOG  
1
CROSSLOG  
1
N/S=NOTSHOWN  
19  
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TROUBLESHOOTING  
Turnoffandletcoolbeforeservicing.Onlyaqualifiedservicepersonshould  
serviceandrepairheater.  
NOTE:Alltroubleshootingitemsarelistedinorderofoperation.  
POSSIBLECAUSE  
REMEDY  
OBSERVEDPROBLEM  
Ignitorelectrodepositionedwrong  
• Replace ignitor.  
Ignitorelectrodeisbroken  
• Replace ignitor.  
Ignitorelectrodenotconnectedto ignitor • Reconnect ignitor cable.  
cable.  
Whenignitorbuttonispressed,thereis  
nosparkatODS/Pilot.  
Ignitorcablepinchedorwetkeepignitor • Free ignitor cable if pinched by any  
cabledry.  
metal or tubing.  
Brokenignitorcable  
Badpiezoignitor  
• Replace ignitor cable.  
• Replace piezo ignitor.  
Applianceburningvaporsfrompaint,hair Ventilateroom.Stopusingodor-caus-  
spray,glues,etc.  
ing products while heater is running.  
Applianceproducesunwantedodors.  
Applianceshutsoffinuse.  
Gasleak.  
• Locate and correct all leaks.  
NotenoughfreshairisavailableforODS/ • Open window and/or door ventilation  
Pilottooperate.  
Lowlinepressure.  
• Contact local gas company.  
ODS/Pilotispartiallyclogged.  
Gasleak.  
• Clean ODS/Pilot.  
• Locate and correct all leaks.  
Gasodorevenwhencontrolknobisin  
OFFposition.  
Controlvalvedefective.  
• Replace control valve.  
Gassupplyturnedofformanualshutoffvalve • Turn on gas supply or open manual shutoff  
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-  
Whenignitorbuttonispressed,thereis  
sparkatODS/Pilot,butnoignition.  
position  
tion.  
• Air in gas lines when installed.  
• Continue holding down control knob.  
Repeat igniting operation until air is re-  
moved  
ODS/Pilotisclogged.  
• Replace ODS/pilot assembly or get it  
serviced  
Gasregulatorsettingisnotcorrect.  
• Replace gas regulator.  
• Press in control knob fully.  
Controlknobnotfullypressedin.  
Controlknobnotpressedinlongenough.  
Manualshutoffvalvenotfullyopen.  
ODS/Pilot lights, but flame goes out  
whencontrolknobisreleased.  
• After ODS/pilot lights, keep control  
knob pressed in 30 seconds.  
• Fully open manual shutoff valve.  
20  
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TROUBLESHOOTING, CONTINUED...  
OBSERVEDPROBLEM  
POSSIBLECAUSE  
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.  
• Burner orifice diameter is too small.  
• Inlet gas pressure is too low.  
• Clean burner or replace burner  
orifice.  
• Replace burner orifice.  
• Contact qualified service person.  
One or both burners do not  
light after ODS/pilot is lit.  
• 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.  
• Burner is damaged.  
• Clean burner or replace burner  
orifice.  
Slight smoke or odor during  
initial operation.  
• Gas regulator defective.  
• Replace burner.  
• 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.  
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.  
Ifthegasqualityisbad,yourpilotmaynotstaylit,theburnersmayproducesoot  
andtheheatermaybackfirewhenlit. Ifthegasqualityorpressureislow,contact  
yourlocalgassupplierimmediately.  
21  
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OPTIONAL KITS FOR THE 9945  
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 9945  
INDICATOR  
ON  
OFF  
R
E
M
O
T
E
SKYTECH  
1001  
MODEL: RCK60  
REMOTE CONTROL KIT  
22  
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OPTIONAL KITS FORTHE 9945continued...  
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  
WIRING DIAGRAM FOR GENERATOR ASSEMBLY  
THERMOPILE  
CONTROL  
WIRING  
TERMINALS  
ROCKER  
SWITCH  
23  
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WIRING GUIDE FOR 9945  
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  
S
it  
ROCKER  
SWITCH  
E
A
WIRING OF THE RCK60 - REMOTE CONTROL KIT:  
Remember the Rocker  
Switch must be turned  
to "OFF" while using  
the Remote Control.  
CONTROL VALVE  
REMOTE CONTROL  
SENSOR  
S
it  
ROCKER  
SWITCH  
E
A
PIGGYBACK  
DISCONNECT  
WIRING WITH THE WTK60 - WALL THERMOSTAT KIT:  
10  
21  
32  
c
WALL  
50 60 70 80 90  
THERMOSTAT  
CONTROL VALVE  
Remember the Rocker  
Switch must be turned  
to "OFF" while using  
the Wall Thermostat.  
10  
21  
32  
c
50 60 70 80 90  
S
it  
ROCKER  
SWITCH  
E
A
PIGGYBACK  
DISCONNECT  
24  
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WIRING GUIDE FOR 9945 continued...  
WIRING WITH THE WSK60 - WALL SWITCH KIT:  
Remember the Rocker  
Switch must be turned  
to "OFF" while using  
the Wall Switch.  
WALL  
SWITCH  
CONTROL VALVE  
T
S
it  
ROCKER  
SWITCH  
E
A
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.  
PIGGYBACK  
DISCONNECT  
10  
21  
32  
c
50 60 70 80 90  
WALL  
THERMOSTAT  
CONTROL VALVE  
10  
21  
32  
c
50 60 70 80 90  
REMOTE CONTROL  
SENSOR  
L
S
it  
ROCKER  
SWITCH  
E
A
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.  
PIGGYBACK  
DISCONNECT  
WALL  
SWITCH  
CONTROL VALVE  
REMOTE CONTROL  
SENSOR  
L
S
it  
ROCKER  
SWITCH  
E
A
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  
Thisvent-freegasheateriswarrantiedforaperiodofoneyear,logsforoneyear,and  
burnersforOneYear,fromdateofpurchaseagainstdefectsinmaterialorworkman-  
ship. Thiswarrantycoversonlythecostofdefectivepartsandappliesonlytothe  
originalconsumerpurchaser. Thereplacementofdefectivepartswillbewithout  
charge. Thiswarrantydoesnotextendto(1)heaterdamagebyaccident,neglect,  
misuse,abuse,alteration,negligenceofothers,includingtheinstallationthereofby  
unqualifiedinstallers,(2)thecostsofremoval,reinstallationortransportationof  
defectivepartsontheheater,or(3)incidentalorconsequentialdamage.  
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-  
TION OR LIABILITY IN CONNECTION WITH THE SALE OR USE  
OF THIS HEATER.  
The heater (MUST BE INSTALLED BY A QUALIFIED INSTALLER) in accor-  
dancewiththeinstructionsfurnishedwiththeunit. Thedefectiveheatershouldbe  
returnedatyourexpensetothedealerfromwhomtheproductwaspurchasedoran  
authorizedserviceagent. Anyproductspresentedforwarrantyrepairmustbe  
accompaniedbyadatedproofofpurchase. Sincesomestatesdonotallowthe  
exclusiononlimitationofincidentalorconsequentialdamages,oronhowlongan  
impliedwarrantylasts,theabovelimitationsmaynotapplytoyou.  
27  
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OWNERS MANUAL  
HOWTOORDERREPAIRPARTSOR"OPTIONS"  
THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT, DEPENDABLE  
SERVICEFROMTHEFURNACE, ANDENABLEYOUTOORDERREPAIR  
PARTSCORRECTLY.  
KEEPINASAFEPLACEFORFUTUREREFERENCE.  
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:  
9945N  
9945L  
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  
227IndustrialParkRd., P.O.Box151  
SouthPittsburg,TN 37380  
Phone#: (423)837-2100  
Website:WWW.USSTOVE.COM  
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