USSC 5660 User manual

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InstallationandOperatingManual
Models5660(I)
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SafetyNotice
Pleasereadthisentiremanualbeforeinstallationanduseofthispelletfuel‐burningroomheater.Failuretofollow
instructionsmayresultinpropertydamage,bodilyinjury,orevendeath.
Ifyourheaterisnotproperlyinstalled,ahousefiremayresult.Foreveryone’ssafety,FOLLOWallInstallationand
OperatingDirections.Neverusemakeshiftcompromisesduringtheinstallationofthisappliance.
Contactyourlocalbuildingorfireofficialsaboutrestrictionsandinstallationinspectionrequirementsinyourarea.
ThesePelletStoveRoomHeatershavebeendesignedforuseintheUSandCanadaandaresuitableformobilehomes.
TheFrenchversionofthismanualisavailablefordownloadatwww.usstove.com
SaveTheseInstructions
UnitedStatesStoveCompany•227IndustrialParkRoad,SouthPittsburg,TN37380•Ph#:(800)750‐2723
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Tested&
ListedBy
PartNo.:851901B

2
TABLEOFCONTENTS
TopicPage(s)
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Introduction3
SafetyInformation4‐5
Specifications6
Dimensions6‐7
OperatingInstructions 8‐11
ThermostatInstallation12
ClearancestoCombustibles       13
InstallingYourRoomHeater14‐23
MobileHomeInstallations24
InsertPelletStoveInstallation25‐28
VentTerminationLocations29
Maintenance30‐33
Troubleshooting34‐36
WiringDiagram37
ReplacementPartsList38
Warranty39
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3
Introduction
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TheentirefamilyofUnitedStatesStoveCompanythanksyouforpurchasingyournewpelletburningroomheater.
AtU.S.Stove,webuildallofourproductswithahands‐onapproachtodetailandquality.Ouroldworldteamof
Craftsmentakegreatprideintheirsuperiorworkmanshiptoensureyouhaveyearsoftroublefreeuseofyour
pelletheater.
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U.S.StovePelletBurningRoomHeatershavebeentestedandlistedforinstallationinresidential,mobilehome
andalcoveinstallations.U.S.StovePelletBurningRoomHeatersareavailableinfreestandingpedestaland
fireplaceinsertversions.
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U.S.StovePelletBurningRoomHeatershavebeencertifiedto:
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ASTME1509‐04,ULC/ORD‐C1482‐M90,ULC‐S627‐00,&ULC‐S628‐00
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TheperformanceofyourPelletStoveRoomHeatercanbeaffectedbythetypeofpelletfuelyouchoosetoburnin
it.Itisimportanttouseonlypelletfuelthatisdryandfreefromdirtorotherimpurities.ThePelletFuelIndustry
hasestablishedstandardsforwoodpelletmanufacturers.WerecommendthatpelletfuelusedinallU.S.Stove
PelletBurningRoomHeatersmeetorexceedthefollowingspecifications:
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Fines(fineparticles):Maximumthrougha1/8"screen
BulkDensity:Minimum40lbspercubicfoot
Size:Maximum3/8"Diameterby1‐1/2"length
AshContent:1%Maximum(Premiumgrade)
3%Maximum(Standardgrade)
MoistureContent:8%Maximum
HeatContent:Minimum8,200btu’sperhour
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Itisimportanttonotethattheashcontentofthefuelandfrequencyofoperationwilldeterminethefrequencyof
whichyouwillberequiredtocleanyourPelletStove.Ahighashfuelmayresultindailycleaning,whilealowash
contentfuelmayresultinlessfrequentcleaning.
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OccasionallyimpuritiesinthefuelwillcauseahardmassbuildupintheburnpotofyourPelletStove.Impurities
suchassilicacanvirtuallyformlittleglassballswhensubjectedtothehighheatgeneratedintheburnpot.When
allowedtocollect,ahardbassbuildupmayblockairflowthroughtheburnpot,whichwillsignificantlyaffectthe
performanceandefficiencyofyourPelletStove.Itisagoodideatochecktheburnpotforanyhardmassbuildup
orotherblockageonadailybasis,andifnecessarylettheburnpotcoolandthencleantheburnpot.
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U.S.StoveCompanyrealizesthatitcannotcontrolthequalityofpelletfuelyouchoosetouseinyourPellet
heater;U.S.Stoveassumesnoresponsibilityforthatchoice.
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CAUTION:BESURETOSTOREPELLETFUELAMINIMUMOF3'(914.5MM)AWAYFROMTHEPELLETHEATER.
RADIANTHEATCANIGNITETHEFUEL.
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Pleasenotethattheratinglabelislocatedontheinsideofthehopperlidonfreestandingmodelsandonthe
backsideoftheashpancoverforinsertmodels.

4
SAFETYINFORMATION
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Besuretoreadtheentireowner’smanualpriortoinstallingandoperatingthisPelletheater.Failuretofollow
theseinstructionscouldresultinfire,propertydamage,bodilyinjuryorevenDeath.
Thisstove’sexhaustsystemworkswithnegativecombustionchamberpressureandaslightpositivechimney
pressure,itisextremelyimportanttoensurethattheexhaustsystembesealedandairtight.Theashpanand
viewingdoormustbesecurelyfastenedinorderfortheunittobeairtight.ThisPelletheaterwillnotoperateusing
naturaldraftorwithoutapowersourcefortheblowers.
Theuseofgratesorothermethodsofsupportingthefuelisnotpermitted.
ThisPelletheaterisdesignedtoburnpelletwoodfuelonly.Donotuseanyothertypeoffuel;doingsowillvoid
anywarrantiesstatedinthismanual.
THEUSEOFSOLIDWOODFUELISPROHIBTEDBYLAW.
ThisPelletheaterisdesignedforresidentialinstallationaccordingtocurrentnationalandlocalbuildingcodes.Itis
alsoapprovedasamobilehomeheaterwhichisdesignedforconnectiontoanoutsidecombustionairsource.
WheninstallingaPelletStoveinamobilehome,itmustbeelectricallygroundedtothesteelchassisofthehome
andboltedtothefloor.Makesurethatstructuralintegrityofthehomeismaintained.
Makesurethatstructuralintegrityofthehomeismaintainedwhenpassingventpipesthroughwalls,ceilingsand
roofs
Itisrecommendedthattheexhaustventbecleanedbi‐annuallyoraftereverytwotonsofpellets.
Sootorcreosotemayaccumulatewhenthepelletheaterisoperatedunderincorrectconditions,suchasan
extremelyrichburn(blacktippedlazyorangeflames).Donotoperatethestoveiftheflamebecomesdarkorsooty
oriftheburnpotoverfillswithpellets.Turnthestoveoffandcallyourdealer.
Thegroundedelectricalcordmustbeconnectedtoastandard120volt,60hertzelectricaloutlet.Ensurethatthe
electricalcordisnottrappedundertheapplianceandthatitisclearofanyhotsurfacesorsharpedges.
Theashpanandviewingdoormustbelockedsecurelyforproperandsafeoperation.
DONOTPLACEUNBURNEDORNEWPELLETFUELINTHEASHPAN.Afireintheashpanmayoccur.
Donotoperateyourpelletheaterifyousmellsmokecomingfromit.Turnitoff,monitoritandcallyourdealer.
RepairandservicingofyourU.S.StovePelletBurningRoomHeatermayonlybedonebyaqualifiedtechnician.
Disconnectthepowercordbeforeperforminganymaintenanceorrepair.
NOTE:TurningthePelletStoveRoomHeaterto"off"doesnotdisconnectpowerfromtheunit.
ThePelletStoveRoomHeaterwillnotoperateduringapoweroutage,ifapoweroutageortrippedcircuitoccurs,
checkforsmokespillageandopenwindowsordoorstoventilateasnecessary.
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5
SAFETYINFORMATION‐continued
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Keepforeignobjectsoutofthehopper.
Contactyourlocalbuildingofficialstoobtainapermitandinformationonanyinstallationrestrictionsor
inspectionrequirementsinyourarea.
BesuretonotifyyourinsurancecompanyofyournewU.S.StovePelletBurningRoomHeater.
AllowthePelletStoveRoomHeatertocoolbeforeperforminganymaintenance.
Ashesmustbedisposedofinametalcontainerwithatightlidandplacedonanoncombustiblesurfacewellaway
fromyourhome.
Checktheventingsystem,atleasttwiceayear,forcreosotebuild‐up.
Keepalldoor/lidsealsandgasketsingoodcondition.
Adequateventilationairisrequiredtooperatethisheater.Duringoperationtheheaterdrawsairforcombustion
whichcanbeassistedbytheinstallationofoutsidecombustionairinlets.However,certainweatherconditions
suchasicingoruseofkitchenexhaustfansmayimpactandreducetheeffectivenessofvents.Itisimportantto
notethatroomairstarvationwellnegativelyimpacttheoperationoftheheater.
Ifpoweroutageswithbatterybackuporroomairstarvationoccursduringoperationofheater,smokeinthe
housemayresult.Thismaytriggersmokedetectorsiftheyareinstalled.
CAUTION:
DONOTCONNECTTOANYAIRDISTRIBUTIONDUCTORSYSTEM.
DONOTUSECHEMICALSORFLUIDSTOSTARTTHEFIRE.NEVERUSEGASOLINE,GASOLINETYPELANTERNFUEL,
KEROSENE,CHARCOALLIGHTERFLUID,ORSIMILARLIQUIDSTOSTARTORFRESHENUPAFIREINTHEHEATER.
KEEPALLSUCHLIQUIDSWELLAWAYFROMTHEHEATERWHILEITISINUSE.USINGTHESECHEMICALSCOULD
CAUSEBODILYHARM,HEATERDAMAGEANDWILLVOIDTHEWARRANTY.
DONOTBURNGARBAGEORFLAMMABLEFLUIDSSUCHASGASOLINE,NAPHTHAORENGINEOIL.
HOTWHILEINOPERATION.KEEPCHILDREN,CLOTHINGANDFURNITUREAWAYFROMTHEHEATER.CONTACT
MAYCAUSESKINBURNS.YOUNGCHILDRENSHOULDBESUPERVISEDWHENTHEYAREINTHESAMEROOMAS
THESTOVE.
DONOTATTEMPTTOOPERATETHEVENTTUBECLEANERWHILETHEPELLETSTOVEISINOPERATIONOR
COOLINGDOWN;WAITUNTILPELLETSTOVEHASCOOLEDCOMPLETELYBEFOREPERFORMINGTHIS
PROCEDURE.
ENSURETHATPEOPLEAREAWARETHATTHEVENTTUBECLEANERKNOBWILLBEVERYHOTDURINGPELLET
STOVEOPERATIONANDCANBEABURNHAZARD.
OTHERRADIANTSURFACESOFTHESTOVEWILLBEHOTDURINGOPERATIONANDCANBEABURNHAZARD.

6
SPECIFICATIONS

HeatingSpecifications:

BurnRate:*43,900btu’sperhouror5.1lbs.offuelperhour
HopperCapacity:55lbs.

*Dependentuponqualityandheatingvalueofpelletfuel.

DIMENSIONS

Figure1

7
DIMENSIONS‐continued
Theminimuminstallationdimensions,oftheinsertopening,are:

32”(813mm)widex22‐3/4”(578mm)highx12‐1/4”(311mm)deep.

Figure2






8
OPERATINGINSTRUCTIONS
CheckandFilltheFuelHopperwithPellets:
ThisPelletStoveisavailableasafreestandingunitorasafireplaceinsert.Thereisadifferentmethodforfilling
thehopperforeachtypeofheater:
Tocheckandfillthehopperofthefreestandingheater,simplyliftthehopperdoor,visuallycheckthehopper
andaddpelletswhenneeded.
Tocheckandfillthehopperoftheinsertheater,pullhopperlidforward,visuallycheckthehopperandadd
pelletswhenneeded.
CAUTION:DONOTOVERFILLTHEPELLETFUELHOPPER.ASASAFETYPRECAUTION,AUGERWILLNOT
OPERATEATANYTIMEWHENFUELHOPPERDOORISOPEN.
Pre‐startCheck‐up:
MakesurethatallpartsofthePelletStoveRoomHeaterarecoolbeforeproceeding.Removetheburnpotand
cleanoutanyashdebris.Besuretore‐installtheburnpotinthecorrectposition(seepage29).
Theblowersandautomaticfuelsupplyarecontrolledfromapanellocatedontherighthandsideofthestove.
Note:YourPelletStovemayomitanodorasoilresiduefromthemanufacturingprocessburnsoffandthehigh
temperaturepaintcures.Youcanminimizethiseffectbyrunningasmallerfireforthefirstfewhoursof
operation.Avoidplacinganyitemsonthestovetopduringthisperiodasthestove’spaintcouldbe
permanentlydamaged.
LightingInstructions:
ATTENTION:Viewingdoormustbesecurelylatchedtoensureproperstoveoperation.Pushdoor‐handle
downwarduntillatchisfullyengaged;youwillfeelthelatchengageandhearanaudibleclick.
WhenfirstoperatingyourPelletStove,depresstheMODEbuttonuntiltheLEDindicatoraboveMANUALlightsup.
ThiswillengageMANUALmodeandprovideyouwithfullcontroloftheheater’scontrolboardfunctionsandallow
youtofamiliarizeyourselfwithhowtheheaterworks.TheheatlevelforT‐STATmodecanonlybesetwhenthe
controlisintheManualMode.
StartingUpThePelletStoveRoomHeater:
WheneverOperatingthePelletStoveforFirstTime,orifTheStoveRunsOutOfPellets,itisNecessarytoPrime
theAugerwithPelletFuel.Todothis,PressandHoldtheAUGERButtonforApproximately3Secondsuntilthe
AUGERLEDilluminates.ThisProcedurewillprimetheAugerandthenAutomaticallyInitiatetheNormalIgnition
Cycle.
CAUTION:Donotusethisprocedurefornormalstartup.Todosowouldcauseexcessivefuelbuild‐upinthe
burnpot.
Fornormalstartupwithpelletsfuelintheauger,pressandreleasetheOn/Offbutton.TheLEDindicatorlight
abovetheOn/Offbuttonwillalternatelyflashgreenthenredtoindicatethatthestart‐upcyclehasbegun.The
lightabovetheAugerbuttonwillflashintermittentlytoindicatetheactivationoftheaugerfeedingthepelletsinto
theburnpot.Theelectricigniterwillalsobeactivatedatthistime.Theignitertakesafewminutestocomeupto
temperatureinordertoignitethepelletsintheburnpot.Itwillnormallytakebetween4minutesand8minutes
forpelletstoignite.
NOTE:Ifpelletsdonotignitewithin12minutestheheaterwillshutdown,requiringyoutoturnontheheater
andrepeatthestart‐upprocess.

9


OPERATINGINSTRUCTIONS‐continued

Whenthepelletshaveignitedandflamehasbeenestablished,thestart‐upcyclewillend;thisproceduretakes
between8and12minutes.IfthecontrolissettoManualMode,itwillnowdefaulttotheheatlevelsettingthe
lastshutdowntime.IfthecontrolissettoT‐STATModetheheatoutputwillcoincidetothecommandsfromthe
thermostat.

Auger:
Asexplainedinthestartingupstep,thisbuttonisonlyservedtostartupthepelletstoveinlieuoftheon/off
buttonwhentherearenopelletsintheauger.

CirculationAirFlow:
YourPelletStoveRoomHeaterfeaturescirculationairflowwhichwillchangeinaccordancewiththeheatsetting.
Circulationairflowwillbeatitsmaximumsettingwhentheheatsettingisalsoatmaximumandsubsequentlywill
beatitsminimumsettingwhentheheatsettingisatminimum.Ifyoudesiretooperatethecirculationfanatits
maximumsettingregardlessofheatsetting,youmaydosobypressingtheFANbutton.

AugerTrim:
WhenoperatingatHeatLevel1,iftheflamegoesoutortheheatoutputistoohighontheminimumheatlevel
setting,usetheAUGERTRIMbuttontomakeadjustments.SeetheAUGERTRIMbuttondescriptiononpage11.

ShuttingDownYourPelletStoveRoomHeater:
TurnofftheheaterbypressingtheOn/Offbutton.Thestovewillentertheshutdowncycleandthepelletswill
stopfeedingintotheburnpottoallowthefuelintheburnpottobecombustedandconsumed.Duringthis
period,theexhaustblowerandcirculationfanwillcontinuetooperateuntiltheflamesareoutandtheheaterhas
cooleddown.Whentheheaterhascooleddowntoitspre‐setlevel,itwillshutdowncompletely.

CAUTION:NEVERTURNOFFTHEHEATERBYUNPLUGGINGORDISCONNECTINGITSELECTRICALPOWER
SOURCE.DOINGSOWILLCAUSETHEHEATERTOSKIPTHEPROPERSHUTDOWNCYCLE,CAUSINGTHEHEATER
TOOVERHEATANDTHEPOSSIBLERELEASEOFSMOKEINTOTHEHOUSE.











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10
OPERATINGINSTRUCTIONS‐continued

ControlBoardFunctions:

MODEButton:TheMODEbuttonallowsyoutoswitchoperatingmodeon
yourPelletStoveRoomHeater.DepresstheMODEbuttontoswitchbetween
ManualandT‐STATmodes.AsyoudepresstheMODEbuttontheindicator
lightabovethedesiredmodewillengage.WhenyouengagetheManualmode,
youwillbeabletomanuallyselecttheheatsettings.Ifyouhaveinstalleda
remotethermostatforyourPelletStoveRoomHeaterandwishtohavethe
heatercontrolledbythatthermostat,depresstheMODEbuttontoengageT‐
STATmode.ThethermostatwillcontroltheheatoutputoftheHeater
alternatingbetweenthelowestheatlevelandthehighestheatlevelthatyou
havepre‐selected.
TheT‐STATmodeprovidesthemostevenheatoutput,forbettercomfort,and
toextendthelifeofthepelletfuelignitionsystem.Additionally,theconstant
flameservesasawarningforpeopleandpetstokeepawayfromtheheater
whileitisinoperation.
ON/OFFButton:TheON/OFFbuttonisusedtoturntheheateronandoff.
Wheneverthereispowertotheheater,theLEDindicatorlightabovethe
ON/OFFbuttonwillbesolidred.Iftheheateriscoldpriortostart‐up,press
andreleasetheON/OFFbutton.TheLEDlightabovetheON/OFFbuttonwill
alternatelyflashredandgreentoindicatethestartupcyclehasstarted.Fuel
pelletswillstarttofeedintotheburnpotandthepelletfuelignitionsystemwill
beactivated.Flamesintheburnpotwillnormallyappearbetween4‐8
minutes,andoncetheflamehasbeenestablished,thestartupcyclewillend,thistakesbetween8‐12minutes.At
thispointtheLEDindicatorlightabovetheON/OFFbuttonwillglowsolidgreen.Theuserwillnowbeableto
makeheatleveladjustments.
HEATLEVELButton:DepresstheHEATLEVELbuttontoadvancetheheatlevelbyoneleveluntilyoureachthe
maximumsetting;fromthemaximumlevelyouwilldecreaseoneleveleachtimeyoudepresstheHEATLEVEL
button.Thecirculationfanspeedwillalsoincreasewiththeheatlevelsetting.Waituntilthestartupcycleis
completeandtheON/OFFLEDissolidgreentosetHeatLevel.(TheHEATLEVELLEDsarealsousedascodesto
indicateamalfunction,pleaserefertotheSafetyFeaturesandwarningcodessectionformoreinformation.)
FANButton:DepressingtheFANbuttonwillsetthecirculationfanspeedtohigh,overridingtheautomaticfan
speedcontrol.Theonboardlogicwillmodulatethefanspeedinaccordancewiththeheatlevelsetting.Itis
recommendedthatyouallowthecontroltoautomaticallysetandadjustthespeedofthefantoobtainoptimum
efficiencyandminimalfannoise.
AUGERButton:WheneverOperatingthePelletStoveforFirstTime,orifTheStoveRunsOutOfPellets,itis
NecessarytoPrimetheAugerwithPelletFuel.Todothis,PressandHoldtheAUGERButtonforApproximately3
SecondsuntiltheAUGERLEDilluminates.ThisProcedurewillprimetheAugerandthenAutomaticallyInitiatethe
NormalIgnitionCycle.NOTICE:Donotusethisprocedurefornormalstartup.Todosowouldcauseexcessive
fuelbuild‐upintheburnpot.
AUGERTRIMButton:ThisButtonisonlyenabledwhenoperatingatHeatLevel1.DepresstheAUGERTRIM
ButtontochangetheAugerfeedrateontheminimumheatlevel;toaccountforthequalityofpelletfuelbeing
used.Increasing

Figure3