United States Stove 6300C Owner's manual

United States Stove
Brand
United States Stove
Model
6300C
Category
Water heaters & boilers
Type
Owner's manual

This manual is also suitable for

USSC
1
1
2
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A A
B B
Please read this entire manual before installation and use of this appliance. Failure to follow
these instructions could result in property damage, bodily injury, or even death.
Contact your local building or re ofcials about restrictions and installation inspection
requirements in your area.
Save these instructions.
Owner’s Manual
UNITED STATES STOVE COMPANY • 227 INDUSTRIAL PARK ROAD • SOUTH PITTSBURG, TENNESSEE 37380 • WWW.USSTOVE.COM
FOR TECHNICAL ASSISTANCE: PHONE: (800) 750-2723 FAX: (423) 837-2109
Part No.: 851782 rev A
UNITED STATES STOVE COMPANY
“Keeping North America Warm Since 1869”
MULTI-FUEL FURNACE MODEL 6500
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American Harvest
2 USSC
TABLE OF CONTENTS ..............................................................................................2
SAFETY PRECAUTIONS ...........................................................................................3
SPECIFICATIONS .......................................................................................................4
HeatingSpecications .....................................................................................4
Dimensions ......................................................................................................4
ElectricalSpecications ...................................................................................4
SafetyandEPACompliance ............................................................................4
FuelConsiderations .........................................................................................5
INSTALLATION .......................................................................................................... 5
InstallationOptions ..........................................................................................6
FloorProtection ............................................................................................... 6
Clearances ......................................................................................................7
VentingRequirements ..................................................................................... 8
MaximumVentingDistance ............................................................................. 8
Pellet Vent Type ...............................................................................................8
PelletVentInstallation ..................................................................................... 8
PelletVentTermination ....................................................................................8
VentTerminationClearances ........................................................................... 9
ThroughtheWallInstallation ......................................................................... 10
ThroughtheRoof/CeilingInstallation............................................................. 10
PrimaryandSecondaryFurnaceIllustrations ................................................ 11
OPERATION ............................................................................................................. 12
HowYourFurnaceWorks ..............................................................................12
DamperControlAdjustment ........................................................................... 12
ControlPanel .................................................................................................13
UnitPreparation .............................................................................................14
Start-UpProcedure ........................................................................................14
ShutDownProcedure ....................................................................................14
DailyOperation ..............................................................................................15
SafetyandConvenienceFeatures ................................................................ 15
MAINTENANCE ........................................................................................................15
ExhaustSystem .............................................................................................15
InteriorChambers ..........................................................................................16
AshDisposal ..................................................................................................16
CheckandCleantheHopper ........................................................................ 16
MainDoorGaskets ........................................................................................16
FanMotors .....................................................................................................16
PaintedSurfaces ........................................................................................... 16
Glass ..............................................................................................................16
Fall Start-Up ...................................................................................................16
SpringShutDown ..........................................................................................16
YearlyServicing .............................................................................................16
REPAIR PARTS DIAGRAM & LIST .....................................................................17-18
WIRING DIAGRAM ...................................................................................................19
TROUBLE SHOOTING .............................................................................................20
ERROR CODES ........................................................................................................21
FLASHING INDICATORS .........................................................................................21
NOTES .................................................................................................................22-23
Table of Contents
USSC 3
Safety Precautions
IMPORTANT:Readthisentiremanualbeforeinstalling
and operating this product. Failure to do so may
resultinpropertydamage,bodilyinjury,orevendeath.
Properinstallationofthisfurnaceiscrucialforsafeand
efcientoperation.
Install vent at clearances specified by the vent
manufacturer.
Donotconnectthepelletventtoaventservingany
otherapplianceorfurnace.
Do not install a ue damper in the exhaust venting
systemofthisunit.
Useofoutsideairisnotrequiredforthisunit.However,
fresh air and return air make-up is required for
maximum burn characteristics and heat distribution
throughoutyourhouse.
Contact your local building officials to obtain a
permitandinformationonanyadditionalinstallation
restrictionsorinspectionrequirementsinyourarea.
Do not throw this manual away. This manual has
important operating and maintenance instructions
thatyouwillneedatalatertime.Alwaysfollowthe
instructionsinthismanual.
Thisheaterisdesignedandapprovedasamulti-fuel,
suchascornorwoodpellets,burningfurnace.Use
onlydriedshelledcornwithamoisturecontentof11%
orless(whichprovidesthebestresults).Apellettype
fuelusedshouldhaveanashcontentof1%orless.
Ifnot,efciencywillsuffer,andyourwarrantymaybe
voided.
Never use gasoline, gasoline-type lantern fuel,
kerosene, charcoal lighter uid, or similar liquids to
startor’freshenup’areinthisfurnace.Keepallsuch
liquidswellawayfromthefurnacewhileitisinuse.
Aworkingsmokedetectormustbeinstalledinthesame
roomasthisproduct.
Donotunplugthefurnaceifyoususpectamalfunction.
TurntheON/OFFSWITCHto”OFF’andcontactyour
dealer.
Your furnace requires periodic maintenance and
cleaning(see”MAINTENANCE”).Failuretomaintain
your furnace may lead to improper and/or unsafe
operation.
Disconnect the power cord before performing any
maintenance!NOTE:TurningtheON/OFFSwitchto
”OFF”doesnotdisconnectallpowertotheelectrical
componentsofthefurnace.
Nevertrytorepairorreplaceanypartofthefurnace
unless instructions for doing so are given in this
manual.Allotherworkshouldbedonebyatrained
technician.
Allow the furnace to cool before performing any
maintenance orcleaning.Ashes must be disposed
inametalcontainerwithatightttinglid.Theclosed
container of ashes should be placed on a non-
combustiblesurfaceorontheground,wellawayfrom
allcombustiblematerials,pendingnaldisposal.
Theexhaustsystemshouldbecheckedmonthlyduring
theburningseasonforanybuild-upofsootorcreosote.
Donottouchthehotsurfacesofthefurnace.Educate
all children on the dangers of a high-temperature
furnace.Youngchildrenshouldbesupervisedwhen
theyareinthesameroomasthefurnace.
Apowersurgeprotectorisrecommended.Thisunit
mustbepluggedintoa110-120V,60Hzgrounded
electricaloutlet.Donotuseanadapterplugorsever
the groundingplug.Donotroute the electrical cord
underneath,infrontof,oroverthefurnace.Donot
routethecordinfoottrafcareasorpinchthecord
under furniture.
Thefurnacewillnotoperateduringapoweroutage.
Ifapoweroutagedoesoccur,checkthefurnacefor
smokespillageandopenawindowifanysmokespills
intotheroom.
The feed door must be closed and sealed during
operation.
Never block free airow through the open vents of
the unit.
Keepforeignobjectsoutofthehopper.
Themovingpartsofthisfurnacearepropelledbyhigh
torqueelectricmotors.Keepallbodypartsawayfrom
theaugerwhilethefurnaceispluggedintoanelectrical
outlet.Thesemovingpartsmaybegintomoveatany
timewhilethefurnaceispluggedin.
Donotplaceclothingorotherammableitemsonor
nearthisfurnace.
Thisapplianceisnotintendedforcommercialuse.
4 USSC
Specications
InputBTU/Hr
1
50,000to105,000BTU/hr.
Heating Capacity
2
1,200-2,800sq.ft.
Fuel Burn Rate
3
5.0-13.0lbs./hr.
BurnTime(lowestsetting) 70hourscontinuous
HopperCapacity 320lbs

Height
43-1/8in.
Width
28-1/2in.
Depth
39-1/2in.
Weight 250lbs.

1
BTUoutputwillvarydependingonthequalityandtypeoffuel.UsePFIlistedfuelsforthebestresults.
2
Heatingcapacitywillvarydependingonoorplanlayoutofyourhome,degreeofinsulation,andtheoutsidetemperature.
3
Fuelsizemayeffecttheactualrateoffuelfeedandburntimes.Fuelfeedratesmayvarybyasmuchas20%.UsePFIlistedfuelforbestresults.
Electrical Rating
110-120volts,60HZ,9.5Amps
Watts(operational)
1150(max.approx.)

SAFETY AND EPA COMPLIANCE
YourAmericanHarvestFurnace hasbeensafetytestedandlistedtoUL391,ASTM1509,and(UM)84-HUD,byOMNI-
TestLaboratories,Inc.Portland,OregonUSA.ItisalsoexemptfromEPAPhaseIIrequirements.
USSC 5
Fuel Considerations
SHELLED CORN (Dry,preferablycornwith11%orlessmoisturecontent)
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Wetcornwillrapidlydeterioratefurnacecomponents,
reduceefciencyandvoidallwarranties.Purchaseamoisturetesterifindoubt.
Cornmustbecleanandfreefromdebris.Neverburncornrightfromtheeld.Damagecausedbydirtycornisnot
coveredbytheproductwarranty.Askforcleanbaggedcornonly.Stalkparts,excessivenesandcob
remnantswillclogtheauger.
NEVER BURN SEED CORN IN YOUR FURNACE. Seedcornistreatedwithchemicalpesticidesthatareharmful
orfatalifswallowed,therefore,seedcornisdangeroustohaveinthehouse,especiallywherechildrencanreachit.
Neverburn“DeerCorn.”Itfrequentlycontainsmolasses/sugars.
Storeyourcornsupplyinadryplaceandkeepbagsorcontainersealedtopreventyourcornfromabsorbingexcess
moisture.Testthemoisturecontentperiodicallytoensuretheproperdryness.
Therearemanyvarietiesofcorngrownaroundtheworld.Eachvarietyhasuniquecharacteristicsincludingthe
shapeandsizeofthekernel.Yourfurnacewillburnmoreconsistentlywithasmalltomidsizekernelcorn.If the
kernelsizeofthecornvariesgreatlyorifyouswitchsourcesfrequently,youwillgetalessconsistentburn. There-
fore,purchasingcornfromthesamesourcewillhelpachieveamoreconsistentburn.DO NOT USE CORN WITH
A HIGH WAX CONTENT!
Oystershellishighlyrecommendedforbestburnoperationsandtoreduceclinkerbuild-up
WOOD PELLETS
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Aswithcorn,beconsistentinyourpelletsupplier.Pelletswillvaryincontentandburncharacteristicsfromsupplier
tosupplier.Aconsistentsupplyofpelletswillresultinamoreconsistentandefcientburn.
Checkyourpelletsforforeignobjects.Yourfurnacewarrantywillnotcoverdamagedonetoyourfurnacedueto
foreignobjectsinthefuelsupply.
Storeyourpelletsinadryplacetopreventthemfromabsorbingaddedmoisture.
Todecreasesawdustbuildup,thehopperwillneedtobevacuumedoutafterevery6-8bagsofpelletsormoreoften
ifthepelletsarepoorquality.Youmayhavetoscreeneachbagofpelletsifsawdustbecomesaproblem.
WoodPelletsvaryinsizeandashcontentfromlessthan1%to3%ormore.Yourfurnacewillburnmoreefciently
withsmalltomidsizepellets.Lowashcontentpelletswillallowyoutoburnthefurnacelongerbetweencleanings.
OnlywoodpelletsmanufacturedtotheAssociationofPelletFuelIndustries(A.P.F.I.)standardforresidentialpel-
letfuelsarerecommended.Performancewillsufferifnonstandardpelletsareused.ConsultyourlocalAmerican
Harvestresellerformoreinformationonapprovedwoodpelletfuel.
CAUTION: DO NOT PLACE SUCH FUELS WITHIN THE SPACE HEATER’S INSTALLATION
CLEARANCES OR WITHIN THE SPACE REQUIRED FOR CHARGING AND ASH REMOVAL.
6 USSC
INSTALLATION OPTIONS



Asa—theunitfunctionsindependentlyofanyothersystem.The“RoomAir”blowerswillcomeon
whentheplenumandExhausttemperaturesreachapresetpointonthefurnace’scircuitboard(PCB).Unitmayalso
beusedasastand-aloneshopheater
Asa—theunitaidsanexistinggas/electricfurnacehelpingcutdownonoperationtime.
ItisrecommendedthatonlyaauthorizedtechnicianinstallyourMulti-FuelFurnace,preferablyanNFIcertiedspecialist.
Installation
IMPROPER INSTALLATION: Themanufacturerwillnotbeheldresponsiblefordamagecausedbythemal-
functionofafurnaceduetoimproperventingorinstallation.Call(800)750-2723and/orconsultaprofessional
installerifyouhaveanyquestions.
FLOOR PROTECTION
Thisunitmustbeinstalledonanon-combustibleoorsurface.Ifaoorpadisused,itshouldbeULlistedorequal.
Theoorpadornon-combustiblesurfaceshouldbelargeenoughtoextendaminimumof6-inchesinfront,6-incheson
eachside,and1-inchbehindthefurnaceforhorizontaltermination.
Floorprotectionmustextendunderand2-inchestoeachsideofthechimneyteeforaninteriorverticaltermination.
AFloorProtectorof1inchthickisrecommendedforthisinstallation.
ADDITIONAL ITEMS NEEDED FOR INSTALLATION
•ULlisted3inchor4inch(Dependingonapplication)“PL”pelletventingexhaustsystem.
•Airdistributionductwork.Transitionfrom4.5inchx18.5inchrectangleto10inchroundisprovided.
•Airlter(Optional).Size:10x20x1
•FloorProtection(Ifnotinstalledonanon-combustibleoor)
•Airreturnventfromthehousetotheroomwherefurnaceisinstalled.
•Freshairforcombustioniflocatedinasmall,tightlyconstructedroom.
USSC 7
Installation
CLEARANCES
NOTE: Distance on the left-hand side of your Multi-Fuel Furnace is set at 24 inches for suitable access to
the control panel and for fuel loading. This distance may be less, but not less than 7 inches.
8 USSC
Installation
VENTING REQUIREMENTS



Thefollowinginstallationguidelinesmustbefollowedtoensureconformitywithboththesafetylistingofthisfurnace
andtolocalbuildingcodes.
IMPORTANT! Thisunitisequippedwithanegativedraftsystemthatpullsairthroughtheburnpotand
pushestheexhaustoutofthedwelling.Ifthisunitisconnectedtoauesystemotherthanthewayexplained
inthismanual,itwillnotfunctionproperly.
MAXIMUM VENTING DISTANCE
InstallationMUSTincludeatleast3-feetofverticalpipe.Thiswillcreatesomenaturaldrafttoreducethepossibilityof
smokeorodorduringapplianceshutdownandkeepexhaustfromcausinganuisanceorhazardbyexposingpeopleor
shrubstohightemperatures.Themaximumrecommendverticalventingheightis12-feetfor3-inchtype“PL”vent.Total
lengthofhorizontalventMUSTNOTexceed4-feet.Usenomorethan180degreesofelbows(two90-degreeelbows,
ortwo45-degreeandone90-degreeelbow,etc.)tomaintainadequatedraft.
PELLET VENT TYPE
AULlisted3-inchor4-inchtype“PL”pelletventexhaustsystemmustbeusedforinstallationandattachedtothepipe
connectorprovidedonthebackofthefurnace(usea3-inchto4-inchadapterfor4-inchpipe).Use4-inchventifthe
ventheightisover12-feetoriftheinstallationisover2,500feetabovesealevel.
WerecommendtheuseofSimpsonDura-Vent
®
orMetal-Fab
®
pipe(ifyouuseotherpipe,consultyourlocalbuilding
codesand/orbuildinginspectors).DonotuseType-BGasVentpipeorgalvanizedpipewiththisunit.Thepelletvent
pipeisdesignedtodisassembleforcleaningandshouldbecheckedseveraltimesduringtheburningseason.Pellet
ventpipeisnotfurnishedwiththeunitandmustbepurchasedseparately.
PELLET VENT INSTALLATION
Theinstallationmustincludeaclean-outteetoenablecollectionofyashandtopermitperiodiccleaningoftheexhaust
system.90-degreeelbowsaccumulateyashandsoottherebyreducingexhaustowandperformanceofthefurnace.
Eachelboworteereducesdraftpotentialby30%to50%.
Alljointsintheventsystemmustbefastenedbyatleast3screws,andalljointsmustbesealedwithHI-TEMPRTV
siliconesealanttobeairtight.Theareawheretheventpipepenetratestotheexteriorofthehomemustbesealedwith
siliconeorothermeanstomaintainthevaporbarrierbetweentheexteriorandtheinteriorofthehome.
Ventsurfacescangethotenoughtocauseburnsiftouchedbychildren.Noncombustibleshieldingorguardsmaybe
required.
PELLET VENT TERMINATION
Donotterminatetheventinanenclosedorsemi-enclosedarea,suchas;carport,garage,attic,crawlspace,undera
sundeckorporch,narrowwalkway,oranyotherlocationthatcanbuildupaconcentrationoffumes.
Theterminationmustexhaustabovetheoutsideairinletelevation.
Theterminationmustnotbelocatedwhereitwillbecomepluggedbysnoworothermaterials.
USSC 9
Installation
VENT TERMINATION CLEARANCES:
A Minimum4-footclearancebeloworbesideanydoororwindowthatopens.
B Minimum1-footclearanceaboveanydoororwindowthatopens.
C Minimum3-footclearancefromanyadjacentbuilding.
D Minimum7-footclearancefromanygradewhenadjacenttopublicwalkways.
E Minimum2-footclearanceaboveanygrass,plants,orothercombustiblematerials.
F Minimum3-footclearancefromaforcedairintakeofanyappliance.
G Minimum2-footclearancebeloweavesoroverhang.
H Minimum1-footclearancehorizontallyfromcombustiblewall.
I Mustbeaminimumof36-inchesabovetheroofand24-inchesabovethehighestpointoftheroofwithin10-feet.
VENTTERMINATIONCLEARANCES
10 USSC
Installation
THROUGH THE WALL INSTALLATION (RECOMMENDEDINSTALLATION)
Toventtheunitthroughthewall,connectthepipeadaptertotheexhaustmotoradapter.Iftheexhaustadapterisatleast
18-inchesabovegroundlevel,astraightsectionofpelletventpipecanbeusedthroughthewall.
Yourfurnacedealershouldbeabletoprovideyouwithakitthatwillhandlemostofthisinstallation,whichwillinclude a
wallthimblethatwillallowtheproperclearancethroughacombustiblewall.Onceoutsidethestructure,a3-inchclearance
shouldbemaintainedfromtheoutsidewallandacleanoutteeshouldbeplacedonthepipewitha90-degreeturnaway
fromthehouse.Atthispoint,a3-foot(minimum)verticalsectionofpipeshouldbeaddedwithahorizontalcap,which
wouldcompletetheinstallation.
Asupportbracketshouldbeplacedjustbelowtheterminationcaporoneevery4-feettomakethesystemmorestable.
Ifyouliveinanareathathasheavysnowfall,itisrecommendedthattheinstallationbetallerthan3-feettogetabovethe
snowdriftline.Thissameinstallationcanbeusedifyour furnace isbelowgroundlevelbysimplyaddingtheclean-out
sectionandverticalpipeinsideuntilgroundlevelisreached.Withthisinstallationyouhavetobeawareofthesnowdrift
line,deadgrass,andleaves.Werecommenda3-footminimumverticalriseontheinsideoroutsideofthehouse.
The“throughthewall”installationistheleastexpensiveandsimplestinstallation.Neverterminatetheendventundera
deck,inanalcove,underawindow,orbetweentwowindows.WerecommendSimpsonDura-Vent
®
orMetal-Fab
®
kits.
THROUGH THE ROOF/CEILING INSTALLATION
Whenventingthefurnacethroughtheceiling,thepipeisconnectedthesameasthroughthewall,excepttheclean-out
teeisalwaysontheinsideofthehouse,anda3-inchadapterisaddedbeforetheclean-outtee.
Youmustusetheproperceilingsupportangesandroofashing(suppliedbythepipemanufacturer;followthepipe
manufacturer’sdirections).Itisimportanttonotethatifyourverticalrunofpipeismorethan15-feet,thepelletventpipe
sizeshouldbeincreasedto4-inchesindiameter.
Donotexceedmorethan4-feetofpipeonahorizontalrunanduseasfewelbowsaspossible.Ifanoffsetisrequired,
itisbettertoinstall45-degreeelbowsratherthan90-degreeelbows.
1 Vertical Cap
2 StormCollar
3 AdjustableRoofFlashing
4 CathedralCeilingSupportBox
5 Pipe
6 45°Elbow
7 90°Elbow
8 HorizontalCap
9 WallThimble
10 BlackCeilingSupportFirestopSpacer
11 SingleTeewithClean-OutAdapter
12 TeeSupportBracket
13 DoubleTeewithClean-OutAdapter
USSC 11
Installation
PRIMARY FURNACE

Wheninstalledasasecondaryfurnace,aDuctDampermustbeinstalledbetweentheairdischargeofthe6500furnace
andtheprimary(Gas,Electric,etc.).Thisductdamperpreventstheairfromtheprimaryfurnacefrombackowingto
thesecondaryfurnace.Dampermustbeamechanical(springreturn)stylewithasimpleclosureswitchtodetermineif
thedamperisopenedorclosed.Thedamperwillconnecttothemulti-fuelfurnace’sprintedcircuitboard(PCB).See
wiringdiagraminthismanual.
12 USSC
Component Location
USSC 13
ON OFF
Auger
Delay
Mode
Auto
Manual
Heat
Range
Room
Fan
Draft
Fan
Aux.
CONTROL PANEL
TurningthefurnaceOFF/ON,aswellasadjustmentsforthefuelfeedrate
androomfanspeedareperformedbypressingtheappropriatebutton(s)
onthecontrolpanelwhichislocatedonthelowerleft-handsideofyour
American Harvest furnace.
Thisunitcanbechanged betweenanautomatic operationoramanual
operation.Thecontrollercomesdefaultintheautomaticmode.
Pressing the “ON” button on the control panel will begin the start-up
sequenceforthefurnace.Fuelwillbegintofeedthroughtheaugerfeed
systemafter3minutes.Pressingandholdingthe“ON”buttonwillrotate
theaugercontinuouslyuntilbuttonisreleased,whichfeedsadditionalfuel.
Pressingthe“OFF” buttononthecontrolpanelwillcausethefurnaceto
enteritsshut-downsequence.Thefuelfeedsystemwillstoppullingfuel
fromthehopperand,oncetheregoesoutandthefurnacecoolsdown,
thefanswillstoprunning.
Pressingthe“Heat Range”arrows,upordown,willadjusttheamountof
fuelbeingdeliveredtotheburnpot.
Thisunitcomespresetfromthefactorytoburnshelledcorn.Thedisplay
willshowa“Cr”infrontoftheheatsetting.Ifburningonlywoodpellets,this
settingmustbechanged.Tochange,pressandholdtheheatrangeupand
downbuttonssimultaneouslyforapproximately2-3seconds.Thedisplay
willchangefrom“Cr”to“Pr”.Ifburningapellet(50%)andcorn(50%)mix,
the“Cr”settingwillworkthebestforoptimumperformance.
Thedraftfan(exhaust)willcomeonassoonasthe“ON”buttonispressed.Thefanwillautomaticallyadjustitsspeed
inaccordancetotheheatrangesetting.However,thisspeedcanbemanuallyoperatedbypressingthe
arrowsupordown.“DraftFan”whenpressed,thedisplaywillshow“Df-A”,whichisautomatic.Pressthearrowsagain
toadjustfanspeed.Whenthefurnaceisinthemanualmode,theoptionalthermostatwillnotproperlycontroltheunit.
WhenadjustingtheDraftFansetting,tryonly1settingaboveorbelowtheheatsetting.
Theroomfan(s)willcomeononcetheunithasreachedoperatingtemperature.Theroomfanswillautomaticallyadjust
theirspeedinaccordancewiththeheatrangesetting.Bypressingthebuttons,thedisplaywillshow“Rf-
A”whichisautomaticorhowmanyfansarerunning.
The buttonisforAgitatoroperation.Whentheunitis“OFF”,pressingthe“Aux”arrowswillrotatetheagitator
foreasyremovalforcleaning.Theagitator,wheninAutomaticmode,willoperateatsetintervals.However,thesecan
bechangedbypressingthearrowsonthe“Aux”button.Theagitatorcanbeadjustedfrom0to9,setting“0”isoffand
setting“9”ishigh.
The buttoncanbeusedtopauserotationoftheAugerandAgitatorforapprox.1minute.Thiscanbe
cancelledbypressingthe“ON”button.
The buttonisusedtoswitchbetweenmanualandautomaticmode.Wheninautomode,thefans,auger,and
agitatorwilloperateatpresetintervalsunlesschangedmanuallyusingthebuttonsmentionedabove.Wheninmanual
mode,thedraftfan(exhaust)willoperateatfullspeed(100%),sotheairmustbecontrolledwiththedamperjustbelow
theviewingdoor.
Duringnormaloperation,theunitisconstantlymonitoredforproblems.Intheeventofanerrorcondition,theunitwill
stopandanerrorwillbedisplayed.Seethelistoferrorcodesfoundattheendofthismanual.
Operation
14 USSC
LIGHTING INSTRUCTIONS
CAUTION: DONOTUSECHEMICALSORFLUIDSTOSTARTTHEFIRE
HOTWHILEINOPERATION.KEEPCHILDREN,CLOTHINGANDFURNITUREAWAY.CONTACT
MAYCAUSESKINBURNS.

area. Pressthe“On”buttonandallowyourheatertorunforatleast4minutes,tocheckforproperoperation.Onceyour
heaterisstarted,youwillnoticethedraftfanstartsimmediately.Ifyoupressthe“HeatSetting”buttonup,thedraftfan
changesspeed,increasingspeedthehighertheheatsetting.After3minutes,theaugerandagitatorwillstartrotating.
Theroomfanswillnotoperateuntilyourfurnacereachespresetoperatingtemperatures.Ifproperoperationof
yourheaterisconrmed,youcanaddfueltothehopperandallowtheaugertopurgethefueltotherepot.
Turn the Heater tothe“OFF”positionandplaceasmallhandfulofwoodpelletsorrestartingpellets(Pelletsthat
alreadycontainrestarter)intherepot.


Squirtonlyasmallamountofrestartergelontopofthewoodpellets(NOTnecessaryifusingrestartingpellets).
Lighttherestarterandwaitapprox.1-minuteforittostartactivelyburning.
Pressthe“On”button,adjusttheheatrangetoread“Cr-3”or“Pr-3”dependingonfuelsetting.Pullthedamperout
approximately1inch.Thiswillautomaticallymatchyourfeedratewiththepropercombustionair.Asyouincrease
theheatsetting,yourfeedrateandcombustionairincreasetogether.Oncetheunitreachesoperatingtemperature,
youmayreducetheheatsetting.
Threeminutesafterturningthestove“On”,theaugerwillbeginfeedingfuelintotherepotalongwiththeagitator
turning.Youshouldhavethestartingfuelcompletelyburningintherepotastheagitatorrotates.NOTE:Ifthestart-
ingfuelisnotburninghotenough,youmayseetherebegintogooutasnewfuelisbeingadded.Ifthisoccurs,
pressingthe“AugerDelay”buttonwillallowtheaugertopausefor1minute.Pressingthe“ON”buttonwillresume
theaugerif1min.istoolong.Ifnotenoughfuelisthereasonfornotburning,pressingandholdingthe“ON”button
willallowtheaugertoruncontinuouslyuntilyoureleasethebutton.
Oncethefuelstartsburningaggresively,youcanadjusttheheatsettingtoyourdesiredrange.Makesurethatyou
pullthedamperoutapproximately1inch.Itmayneedtobepulledoutmoreforhigherheatsettings.Tryopeninga
1/4inchatatime.
Asyoubegintohavebetterunderstandingofhowtheheater operatesandtheamountofheatyourequire,youcan
adjusttheheatsettingsupordowntoyoursatisfaction.


-Iftheheaterisbeingoverred,burnedtoohot,theheaterwillautomaticallyshutdowntoavoid
damagetocomponentsintheheater.Referto“LightingInstructions”forproperuse.
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SHUT-DOWN PROCEDURE
Pressthe“OFF” buttononthecontrolpaneltoputthefurnaceinshutdownmode.Atthistime,theredlightabovethe
“OFF”buttonwillilluminate.Oncethisisdone,theaugerwillstopfeedingfuel,buttheroomairfan(s)anddraftfanwill
continuetooperate.Whentheinternaltemperatureoftheunitdropsbelowthefactorypresettemperatures,theroom
airfansanddraftfanwillceasetooperate.Theredlightwillthenshutoffandtheunitwillbecompletelyshutdown.
Thehottertheunitisduringitsoperation,thelongeritwilltakeforthefurnacetocompletetheshutdowncycle.Ifthe
furnacestaysonformorethan2hoursafterpressingthe“OFF” buttonandyouaresurethatthereisout,thefurnace
canbeunpluggedfromtheoutlet.Afterapproximately10seconds,theunitcanbere-connectedtothepowersource
andthecontrolboardwillbereset.

START-UP PROCEDURE
USSC 15
Maintenance
Operation
DAILY OPERATION



Intheeventofa,thefurnaceWILLNOTfunction.Itisveryimportantthatunitbeventedproperly,as
thenaturaldraftisneededtoclearthesmokefromthefurnaceduringapoweroutage.Iftheunitwas“ON” whenthe
poweroutageoccurred,oneofthefollowingwilltakeplacewhenpowerisrestored:
Ifthefurnaceisstillwarm,itwillresumefeedingfuelandcontinuetooperatenormally.Iftherehasgoneout,you
willhavetopressthe“OFF” buttonandthenthe“ON” buttonagaintobeginanewstart-upsequence.
Ifthefurnacehascooled-off,itwillresettoits“OFF” condition.Atthispoint,youmaypressthe“ON” buttonto
beginanewstart-upsequence.
NOTE:Theunitwillalsoshutdownintheeventofandraftfanfailure;ifthisisthecase,theunitwillnotre-startandyou
mustcontactCustomerServiceat(800)750-2723.
SAFETY AND CONVENIENCE FEATURES
YourAmerican Harvest incorporatesathathelpsensurethateverythingisinproperworking
orderbeforefeedingfueltotheburnpot.Becausethefurnaceworksusinganinduceddraftpressure,thefurnacewill
notcontinuetooperateiftheviewingdoorisleftopen;orifthedraftfanfailsortheexhaustsystemisblocked.
The willpreventyourfurnacefromoperatingatabnormallyhightemperatures.Shouldthe
furnacetemperaturebegintoapproachthefactorypre-setlimit,thetemperaturelimitcontrolwillautomaticallyslowdown
theaugerfeedrateuntilthetemperaturereturnstoanormalcondition.Bothroomairfanswilloperateatfullspeedalso
untilthefurnacereturnstonormaloperatingtemperatures.
Ifyourfurnacecontinuestocutbackbecauseitisreachingthetemperaturelimits,reducethe“heatsetting”tothenext
lowersetting.
1.)
2.)





EXHAUST SYSTEM
Thebyproductsofcombustioncontainsmallparticlesofyash.Flyashwillcollectintheexhaustventingsystemand
restricttheowofuegases.Incompletecombustion,suchasduringstartup,shutdown,orincorrectoperationofthe
furnacewillleadtosootformationwhichwillcollectintheexhaustsystem.Therefore,itisimportantthattheexhaust
systembeduringtheburningseason.
Checkthecleanoutteesperiodicallytodeterminetherequiredcleaningschedule.3or4-inchchimneybrushesare
availableforchimneycleaning.Iftheexhaustsystemoroutsideairpipeshavescreensonthem,frequentlycleanthe
screen.Apluggedscreenwillshutoffcombustionairandcausearetodieorburnpoorly.
16 USSC
INTERIOR CHAMBERS
OpentheAshCleanoutsandscrapallashintotheashpan.Openthedamperandallowtheashestofallintotheashpan.The
dampermayneedtobeslideinandoutseveraltimestoclearanyashbuild-up.Thismayneedtobedonedailydependingonfuel
consumption.Besuretheashcleanoutslocatedoneithersideofthedamperarecompletelyclosedbeforeoperating.
Periodicallyremoveandcleantheburnpotandtheareainsidetheburnpothousing.Inparticularitisadvisabletocleanouttheholes
intheburnpottoremoveanybuildupthatmaypreventairfrommovingthroughtheburnpotfreely.
PlacingtheBurnpotandtheAgitatorinabucketofwaterandallowingtosoakwillhelpwiththeclinkerbuild-upandremoval.
Removethetwocleanoutslidesoneachsideoftheburnpotattherearoftheburnchambertocleanoutallash.
Removetheexhaustcleanoutplatelocatedbehindtheashpanandcleantheexhaustductofallash.
Ifavacuumisusedtocleanyourfurnace,wesuggestusingavacuumdesignedforashremoval.Someregularvacuumcleaner(i.e.
shopvacs)mayleakashintotheroom.
ASH DISPOSAL
Ashesshouldbeplacedinametalcontainerwithatightttinglid.Theclosedcontainerofashesshouldbeplacedonanoncombustible
oororontheground,wellawayfromallcombustiblematerials,pendingnaldisposal.Iftheashesaredisposedofbyburialinsoil
orotherwiselocallydispersed,theyshouldberetainedintheclosedcontaineruntilallcindershavebeenthoroughlycooled.

Checkthehopperperiodicallytodetermineifthereisanyfuelorfuelmatterthatisstickingtothehoppersurface.Cleanasneeded.

Inspectthemaindoorandglasswindowgasketsperiodically.Themaindoormayneedtoberemovedtohavefrayed,broken,or
compactedgasketsreplacedbyyourAuthorized“American Harvest”Dealer.
Also,becarefulnot todamagethegasketsonthe backsideofthecleanoutsonthefront oftheunit.Ifgaskets becometornor
damaged,theymustbereplaced.
FAN MOTORS
Cleantheairholesonthemotorsofboththedraftfanandroomairfansannually.Removethedraftfanfromtheexhaustductand
cleanouttheinternalfanbladesaspartofyourfallstart-up.AnewgasketmaybepurchasedfromUSStove’sPartsDepartment.
Replacethecustomersuppliedairlteronthebackofthefurnaceonaregularbasisifinstalled.
PAINTED SURFACES
Paintedsurfacesmaybewipeddownwithadampcloth.Ifscratchesappear,oryouwishtorenewyourpaint,contactyourAuthorized
“American Harvest”Dealertoobtainacanofsuitablehigh-temperaturepaint.
GLASS
Werecommendusingahighqualityglasscleaner.Shouldabuildupofcreosoteorcarbonaccumulate,youmaywishtouse000
steelwoolandwatertocleantheglass.Intheeventyouneedtoreplacetheglass,onlyhightemperatureceramicglassofthecorrect
sizeandthicknessmaybeused.ContactyourAuthorized“American Harvest”Dealertoobtainthisglass.
FALL START UP
Priortostartingtherstreoftheheatingseason,checktheoutsideareaaroundtheexhaustandairintakesystemsforobstructions.
Cleanandremoveanyyashfromtheexhaustventingsystem.Cleananyscreensontheexhaustsystemandontheoutsideair
intakepipe.Turnallofthecontrolsonandmakesurethattheyareworkingproperly.Thisisalsoagoodtimetogivetheentire
furnaceagoodcleaningthroughout.
SPRING SHUTDOWN
Afterthelastburninthespring,removeanyremainingfuelfromthehopperandtheaugerfeedsystem.Scoopoutthefuelandthen
runtheaugeruntilthehopperisemptyandfuelstopsowing(thiscanbedonebypressingthe“ON” buttonwiththeviewingdoor
open).Vacuumoutthehopper.Thoroughlycleantheburnpot,andrebox.Itmaybedesirabletospraytheinsideofthecleaned
hopperwithanaerosolsiliconesprayifyourfurnaceisinahighhumidityarea.Theexhaustsystemshouldbethoroughlycleaned.
YEARLY SERVICING
AyearlyservicingandcleaningbyyourAuthorized“American Harvest”Dealerisrecommended.Afeemaybechargedforthisservice.
Maintenance
USSC 17
Parts Diagram
17
15
12
7
61
11
8
9
59
3
60
1
2
16
14
13
212019
18
33 32
31
30 29 27
26
28
25
24
23
56
55
55
57
22
53
58
54
35
34
37
36
38
39
62
4
49
50
5
51
52
28
46
27
41
40
48
24
28
45
44
43
27
42
47
10
64
63
6
18 USSC
Parts List
1
1
2
2
3
3
4
4
A A
B B
PARTSLIST
ITEM
PARTNO
TITLE
QTY
1 25507 PAINTED,FEEDDOOR 1
2 25492 PAINTED,DOORHANDLE 1
3 83506 3/8x1-1/4ROLLPIN 1
4 891053 DOORGLASSW/OLOGO 1
5
88066 GASKET,5/8ROPE 1
6 88087 GLASSGASKET(1x3/16) 1
7
25520
RETAINER,BOTTOMGLASS
1
8 25521
RETAINER,TOPGLASS
1
9 83278
#10FLATWASHER
4
10 83202
MACHINESCREW
4
11 89574
HANDLE,SPRING
1
12 25393
GLASSRETAINER
1
1
5
9
8
10
12
7
4
6
11
3
2
   
1 25507 FeedDoor 1
2 25492 Handle,Door 1
3 83506 3/8x11/4RollPin 1
4 891053 DoorGlassw/oLogo 1
5 88066 5/8”RopeGasket 4.5ft
6 88087 GlassGasket(1x13/16) 3ft
7 25520 BottomGlassRetainer 1
8 25521 TopGlassRetainer 1
PARTSLIST
   
9 83278 Washer 4
10 83202 MachineScrew 4
11 89574 Spring Handle 1
12 25393 Retainer,Glass(AlternateFor7&8) 1
N/S 25080MB DoorLatch 1
N/S 83508 5/16-18x1-3/4Bolt 1
N/S 83338 5/16-18Lock-Nut 1
N/S-NotShown
   
1 891481 TopCoverWeldment 1
2 891471 LidWeldment 1
3 891375 SidePanel,Right 1
4 891376 Weld.,LeftSidePanel 1
5 891438 AccessPanel,Back 1
6 80554 Assembly,CircuitBoard 1
7 69524 Assembly,FeedDoor 1
8 83508 5/16-18x3/4Bolt 1
9 25080 Latch,Door 1
10 891372 Pad,DoorHinge(Threaded) 2
11 891262 Bafe 1
12 891440 Cleanout,Ash 2
13 891461 Cover,ExhaustCleanout 1
14 83551 WingNut,1/4-20Brass 2
15 891445 AshPanAssembly 1
16 88047 RopeGasket,3/4x1/8w/Adhesive 4ft
17 891327 Latch,Mini-Lift&Turn 2
18 891364 Hearth Plate 1
19 891457 Cleanout,Ash(Lower) 2
20 891485 Weldment,Damper 1
21 89954 SpringHandle(Small) 1
22 891455 Weldment,Burnpot 1
23 40501 Agitator,Cast 1
24 83529 Hairpin 2
25 88111 Gasket,AgitatorBracket 1
- 891232 Assy,AgitatorBracket(Items26,27,28) 1
26 891220 MountingBracketfor3/4”Bushing 1
27 891132 3/4”Bushing 3
28 83534 Retaining Ring 3
29 86620 DriveShaft 1
30 83533 RollPin 1
31 80488 DriveMotor 1
32 25427 Retainer,AgitatorMotor 1
33 891284 AccessPanel,AgitatorMotor 1
34 80530 800CFMRoom(Distribution)Fan 2
35 88127 Gasket,Blower 2
   
36 80495 120 CFM Draft Fan 1
37 88123 Gasket,Blower120CFM 1
38 891491 Transition,ExhaustBlower 1
39 80531 RTD,Platinum 1
40 891269 Assy,AugerHousing 1
41 891141 Auger 1
42 891248 Weldment,BottomPlateRetainer 1
43 891195 Bracket,DriveMotor 1
44 891169 Hose,Heater 2
- 69513 Assy,BushingRetainerBot.(Items45,26,28) 1
45 891190 Plate,BottomBushing 1
- 69514 Assy.,BushingRetainerTop.(Items46,26,28) 1
46 891189 Plate,TopBushing 1
47 891180 Cover,Auger 1
48 80529 AugerMotor 1
49 891470 HopperAssembly 1
50 80491 Micro-Switch,HopperLid 1
N/S 80499 WiringHarness,LidSwitch 1
N/S 80497 WiringHarness,Main 1
51 80462 Recepticle,3Prong 1
52 80461 Cord,PowerSupply 1
53 891187 Brkt,PressureSwitch/PCB 1
54 80549 PressureSwitch,DualPort 1
N/S 83905 3/4”SnapBushing 2
55 891121 Hose,Silicone 1.2ft
56 89586 Nipple,Auger 1
57 89603 BrassConnector 1
58 83537 HoseClamp(#4) 2
59 80501 Thermistor(LongLead) 1
60 891296 TransitionDuct,10”Round 1
61 891374 AccessPanel,Plenum 1
62 25681 PrimaryBlower,IsolationPanel 1
63 25680 SecondaryBlower,IsolationPanel 1
64 25683 BridgePlate,IsolationPanel 1
N/S=NotShown
USSC 19
Wiring Diagram Amendment
20 USSC
Trouble Shooting
PROBLEM CAUSE:Notenoughcombustionair;Fuelhastoomuchmoisture.
Viewing window becoming black
shortlyafterstart-up.
 Adjusttheairdampertoamoreopenposition.
Useafuelwithlessmoisturecontent
PROBLEM CAUSE:Notenoughcombustionair;Fuelhastoomuchmoisture.
“BlackPopcorn”ispresentintheburn
chamber.
 Adjusttheairdampertoamoreopenposition.
Useafuelwithlessmoisturecontent
Stovemightbecyclingexcessivelyduetotemperaturecutbacks.
Reduceheatsetting
PROBLEM CAUSE:Chemicalreactionbetweenthestarchincornandtheheat.
“Clinkers”forminburnpot.  Addcalciumcarbonate(akachickenscratchoroystershell).
Adjustairmixture
• Usecornwithlessmoistureorstarch.
PROBLEM CAUSE:Unitisreachingthe“AlmostOver-temp”preset.
Unitcyclesupanddownwhenonthe
“HIGH”heatsetting.
 Adjusttheheatrangetolowersetting.
Fuelburnshotcausingthefurnacetocyclebetweenhighsettingand
lowersettings.




PROBLEM CAUSE:Toorichair/fuelmixture
Orange, lazy flame, excessive fuel
build-upintheburnpot
 Cleanouttheburnpotandburnpothousing
Adjusttheairdamperonthefrontofthefurnacetoanopenposition.
Makesurethattheviewingdoorisclosedandsealedproperly.Ifnot,
checkdoorgasket..
Checkthatalloutsideconnectionsareclearofanyobstructions.
Checktheexhaustsystem;cleanasneeded.
PROBLEM CAUSE:Burnpotburnsoutoffuel
Firegoesoutorfurnaceshutsdown.  Hopperisempty,rellthehopper.
Lossofdraftpressure.Makesurethattheviewingdoorisclosedand
sealed properly. Check that all outside connections are clear of any
obstructions.Checktheexhaustsystem;cleanasneeded.
Checkthatthepressureswitchconnectiontothereboxisfreeofashor
clearofobstructions.
 Augersystemisjammedorthereisa“bridging”ofthefuelinthehopper,
preventingfuelfromowingintotheaugerfeedsystem.
Stovemaybeshuttingdowntoanovertemperturecondition.
PROBLEM CAUSE:Corniswetorithasaveryhighmoisturecontent.
Cornbuildsupandisnotburningcom-
pletely.Steamiscomingfromthecorn.
 Usecornwithamoisturecontentof11%orlessforbestresults.
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United States Stove 6300C Owner's manual

United States Stove
Brand
United States Stove
Model
6300C
Category
Water heaters & boilers
Type
Owner's manual
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