Hotblast HB1440E User manual

Wood Only Central Furnace
Owner’s Installation and Operation Manual
Model HB1440E
Installation is to be preformed by a
qualiedinstaller.
SAVE THESE INSTRUCTIONS
United States Stove Company
227IndustrialParkRd.
South Pittsburg, TN 37380 852854-3901F
U.S. ENVIRONMENTAL PROTECTION AGENCY
Certied to comply with the 2016 particulate
emissionstandards.Notapprovedforsaleafter
May 15, 2020
ThisunitiscertiedUL-391(R2014)
ReportNo.0215WH055S

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CAUTION:
• Powersourcenotcontrolledbyfurnacemaindisconnect.
• Respectalllocalandnationalcodeswheninstallingthisunit.
• Thisunitisnottobeconnectedtoachimneyueservinganotherappliance.
• Thisunitisdesignedtoburnsolidhardwoodonly.
49”
24-1/16”
34”
2”
40”
34”

-3-
Combustible: Wood
Flue Pipe Diameter: 6”(153cm)
FluePipeType:(Standard,
SingleWall,orDoubleWall): BlackorBluedSteel2100°F(650°C)Class“A”
Minimum Chimney Height: 12’
MaximumLogLength: 27”
Electrical 120V,60Hz,2.6Aperblower(5.2Aonstartupforbothblowers)
Dimensions
Combustion Chamber:
WidthxDepth: 17.4”X28.3”
Volume:
CubicFeet: 5.2cubicfeet
DoorOpening:WidthxHeight: 11.6”X11.5”
Weight(lbs): 509lbs
Specifications
CONGRATULATIONS!
You’vepurchasedaheaterfromNorthAmerica’soldestmanufacturerofwoodburningproducts.
Byheatingwithwoodyou’rehelpingtoCONSERVEENERGY!
WoodisouronlyRenewableEnergyResource.Pleasedoyourparttopreserveourwoodsupply.Plantatleast
onetreeeachyear.Futuregenerationswillthankyou.
ThismanualdescribestheinstallationandoperationoftheHotblast,HB1440E
wood heater. This heater meets the 2016 U.S. Environmental Protection
Agency’s emission limits for wood heaters sold after May 15, 2016. Under
specicEPAtestconditionsthisheaterhasbeenshowntodeliverheatata
rateof18,850–56,000BTU/hr.Thisheaterachievedaparticulateemissions
rateof0.39lb/mmBtuwhentestedtomethodCSAB415.1-10(*andanoverall
efciency of 62.6 %). The maximum overall heat output of this heater was
testedtobe89,000Btu/hr.
Thiswoodheaterhasamanufacturer-setminimumlowburnratethatmustnotbealtered.Itisagainstfederal
regulationstoalterthissettingorotherwiseoperatethiswoodheaterina mannerinconsistentwithoperating
instructionsinthismanual.
Theoperationofthiswoodheaterinamannerinconsistentwiththeowner’smanualwillvoidyouwarrantyand
isalsoagainstfederalregulations.
Thisheaterisdesignedtoburnnaturalwoodonly.Higherefcienciesandloweremissionsgenerallyresultwhen
burningairdriedseasonedhardwoods,ascomparedtosoftwoodsortogreenorfreshlycuthardwoods.
Thiswoodheaterneedsperiodicinspectionandrepairforproperoperation.Itisagainstfederalregulationsto
operatethiswoodheaterinamannerinconsistentwithoperatinginstructionsinthismanual.
0215WH055E

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Safety
• WARNING:Donotoperatewithfuelloadingorashremovaldoorsopen.
• Donotconnectthisunittoachimneyueservinganotherappliance.
• WARNINGDANGER:Riskofreorexplosion.Donotburngarbage,gasoline,naphtha,motoroil,orother
inappropriatematerials.Donotusechemicalsoruidstostartthere.
• WARNING:Riskofre.Donotoperatewithuedraftexceeding.060”watercolumn/14.93Pascals.Donot
operatewithfuelloadingandashremovaldoorsopen.Donotstorefuelorothercombustiblematerials
withinmarkedinstallationclearances.Inspectandcleanuesandchimneyregularly.
• CAUTION:Hotsurfaces.Keepchildrenaway.Donottouchduringoperation.
• Theheatexchanger,uepipe,andchimneymustbecleanedregularlytoremoveaccumulatedcreosote
andash.Ensurethattheheatexchanger,uepipe,andchimneyarecleanedattheendoftheheating
seasontominimizecorrosionduringthesummermonths.Theappliance,uepipe,andchimneymustbe
keptingoodcondition.Theseinstructionsalsoapplytoadraftinducerifused.Topreventameorsmoke
spillage,theslidebafemustbepulledoutandthefuelloadingdoorleftcrackedfor10secondspriorto
openingdoorfully.Loadfuelcarefullyordamagemayresult.
• Hotwhileinoperation.Keepchildren,clothingandfurnitureaway.Contactmaycauseskinburns.
• Donotusechemicalsoruidstoignitethere.
• Donotleavethefurnaceunattendedwhenthedoorisslightlyopened.
• Donotburngarbage,ammableuidsuchasgasoline,naphthaormotoroil.
• Alwaysclosethedooraftertheignition.
• Consultyourmunicipalbuildingdepartmentorreofcialsaboutpermits,restrictionsandinstallations
requirementsinyourarea.
• INSPECTFLUEPIPES,FLUEPIPEJOINTS,ANDFLUEPIPESEALSREGULARLYTOENSURETHATSMOKEANDFLUE
GASESARENOTDRAWNINTO,ANDCIRCULATEDBY,THEAIR-CIRCULATIONSYSTEM.
• CAUTION:CLEANOUTOFTHEHEATEXCHANGER,FLUEPIPECHIMNEY,ANDDRAFTINDUCER,IFUSED,IS
ESPECIALLYIMPORTANTATTHEENDOFTHEHEATINGSEASONTOMINIMIZECORROSIONDURINGTHESUMMER
MONTHS,CAUSEDBYACCUMULATEDASH.

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Unpacking And Preassemble
UNPACKING
1. Removeallpackagingfromthefurnace.
2. Removethesuppliedpartsfromthefurnace.
BRICK ALIGNMENT
Inspect for any damage. Ensure that the bricks and ash plug are positioned correctly and not broken (see
illustrationforproperbrickarrangement).
TOOLS AND MATERIALS NEEDED FOR INSTALLATION
Thefollowingisalistoftoolsandmaterialsneededtoinstallyourfurnace.
• 7/16”socketwrench.
• 5/16”socket(Bestifusingapowerdrillandasocketbit).
• Pairofpliersorchannel-locks.
• Powerdrillwithan1/8”drillbittoinstallsheetmetalscrewsintoconnectorpipe..
• Sheetmetalscrews.
• Non-combustibleoorprotectorasspeciedinthismanual.
• Allchimneyandchimneyconnectorcomponentsrequiredforyourparticularventinginstallation..
• Electricalwiringtoolsandsupplies.
• Ductworkforsupplyandreturnair.
ProperFireBrickAlignment

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Furnace Installation
Dimension Inch mm
ABackwalltoFurnace 28 712
BSidewalltoFurnace 16 407
CSidewalltoFlue 25 635
DBackwalltoFlue 18 458
ESupplyDuct(rst6feet) 6 153
FSupplyDuct(afterrst6feet) 126
G MinimumDuctheight 8 204
H Top of Door to Ceiling 48 1220
JMinimum Ceiling Height 77 1956
INSTALLATION OPTIONS
Theinstallation of this furnaceincludes supplying electrical power,return (fresh air) ductwork,and supply air
ductwork.Thisfurnacemaybeinstalledintwodifferentcongurations.
1. Standalonewoodfurnace
2. Add-onwoodfurnace
 See kit installation section in this manual to ensure proper assembly, installation and operation of your new
furnace.
Ifinstallinginanareawithafanitshouldnotbeallowedtocreatenegativepressureintheroomwherethe
furnaceisinstalled.
LOCATING YOUR FURNACE (INSURE THAT THE REQUIRED MAINTENANCE CLEARANCES ARE MAINTAINED)
Yourfurnacemustbeinstalledasshowninthismanualandincompliancewithalllocalandnationalcodes.
It is of the utmost importance that the clearances to combustible materials be strictly adhered to during
installationofthefurnace.Refertothetableanddiagramsbelowforminimumrequiredclearances.
Back wall
Side wall Side wall
Ceiling
Floor Protector
C
B
A
ML
N
K
E
F
G
H
J
D
Q
O
R
P
SS
Back wall
Side wall
Side wall
Ceiling
Floor Protector
C
B
A
ML
N
K
E
F
G
H
J
D
Q
O
R
P
SS
CLEARANCETOCOMBUSTIBLESCLEARANCETOCOMBUSTIBLES

-7-
MAINTENANCE CLEARANCES
Yourfurnacehasrecommendedminimummaintenanceclearancerequirements.Theseclearancesinsurethat
thereisadequateroomtopreformmaintenanceandserviceyourfurnace.DONOTstorefuelwithinthespecied
clearances.Seethetableanddiagrambelowtodeterminetheclearancesforyourfurnace.
Dimension Inch mm
K MaintenanceClearance(Front) 24 610
L MaintenanceClearance(Left) 24 610
MMaintenanceClearance(Right) 24 610
NMaintenanceClearance(Rear) 36 915
Back wall
Side wall Side wall
Ceiling
Floor Protector
C
B
A
ML
N
K
E
F
G
H
J
D
Q
O
R
P
SS
Back wall
Side wall Side wall
Ceiling
Floor Protector
C
B
A
ML
N
K
E
F
G
H
J
D
Q
O
R
P
SS
MAINTENANCECLEARANCE
FLOORPROTECTORREQUIREMENTS
FLOOR PROTECTOR
Thefurnacemustbeplacedonsolidconcrete,solidmasonry,orwheninstalledonacombustibleoor,onaoor
protector.Theoorprotectorisrequiredtoprovideheat,liveember,andashprotectionandmustbeofanon-
combustible,continuoussolidsurfacetoprotectagainstinltrationofliveembersandash.Floorprotectionmust
haveandR-Valueofatleast2.8. Refertooorprotectormanufacturer’sinstructionsfor installationdirections.
Theoorprotectorornoncombustibleoormustextendunderthefurnaceandbeyondeachsideasshown
below.
Dimension Inch mm
O* Front 16 407
P Flue rear 2 51
Q** Left 8 204
R** Right 8 204
S Flue Side 2 51

-8-
Duct Work Installation
We strongly recommend that the hot air ductwork be installed by a home heating specialist. If doing the
installationyourself, before you decide which installation will best suityourneeds, consult a qualied heating
technicianandfollowhisrecommendationsastothesafestandmostefcientmethodofinstallation.
Thisfurnacecanbeinstalledinthreeways,asastandaloneunit,parallel,andinserieswithanexistingfurnace.
SUPPLY AIR (HOT AIR) PLENUM
Thewarm-airsupplyductshallbeconstructedofmetalinaccordancewithNFPA90B,2-1.1.Theplenumsinstalled
tothefurnaceshallbeconstructedofmetalinaccordancewithNFPA90B,2-1.3.
Wheninstallingthisfurnacethehotairplenumistohaveaminimumheightof24”(610mm)ifthetopoftherst
verticalsectionisnotushwiththetopofthersthorizontalsectionofductwork.Ifthetopoftheplenumisush
withthetopofthersthorizontalsectionofductworkthentheminiumheightis15”(381mm).
RETURN AIR (FRESH AIR)
Thereturn(fresh)airintakeonthefurnaceisontherearoftheunit.Theductworkmustbemechanicallyattached
totheunitorUFB908blowerboxwithsheetmetalscrewstoensureaproperoperation.
STAND ALONE INSTALLATION
Ifinstallingthisfurnaceasastandaloneunit,ensurealllocalcodesandallinstructionsinthismanualarefollowed,
includingclearancetocombustibles,oorprotectorspecicationsandsafetywarnings.
24-1/16”
6”
SupplyAir(HotAir)DuctWorkOutletSize
Supply Air Plenum Minimum
HeightOf24”
SupplyAirPlenumWith
MinimumHeightOf15”

-9-
CENTRAL INSTALLATION
Air Filter Replacement

-10-
ASSEMBLY OF FURNACE
Yourfurnacerequiresthefollowingitemstobeassembledorinstalled
bytheserviceperson:
BlowersandBlowerControls
ElectricalConnections
1. Remove all parts from the unit (blowers, thermodisc, and all
wiring)andinspectfordamage,includingtherebrickassome
breakagecouldoccurduringshipment.
2. Installthe thermodisc on rear of furnacecabinetwith the two
screwsprovided.Mounttheconduitassemblyfromthejunction
boxtothethermostatbracket.Crimpthetwofemaleterminals
toeachofthewireleads.Plugthewirestothethermodisc.NOTE:
Itdoesnotmatterwhichofthetwowiresplugstowhichterminal
onthethermodisc.
3. Remove blowers from cartons. Remove junction box cover.
Attachclipnutsasingureshown.Installblower(s)andgasket(s
with1/4"-20x3/4"boltsasshown.
4. Wire right side blower rst (See wiring diagram) and replace
coveronjunctionboxonblower.
5. Wireleftblowersameasaboveandreplacecover.
SMOKE CURTAIN
Using two 1/4-20 x 1-1/4”
Carriage bolts, two smoke
curtain clips, and two nuts,
attach the smoke curtain in
placeabovethefuelfeeddoor
asshown.Afterinstallation,the
smoke curtain should swing
freelybackintothefurnace.
Accessory Installation
THERMODISC
THERMODISC
COVER
4” ELECTRICAL
JUNCTION BOX
BLOWERS
BLOWERS GASKET CLIP NUTS
(Not used in the upper center hole.)
DOOR LATCH INSTALLATION
Usethetwoincludedboltsandnutstosecurethehandletothestoveasshown.
Note:Adjustthehandleasneededtoinsureaproperseal.

-11-
Electrical Installation
Allelectricalconnectionsshouldbedonebyaqualiedelectrician
Itisrecommendedtoconnectthefurnacetoitsown15amp120Voltcircuitfromthehousepowersupply
105°C
NOTE: Wireleadsfromthedistributionblowerareusually
BOTHBLACK.Makesnodifferencewhichleadsfromthe
motor(s)connectstothecorrespondingleadscomingoutof
theconduit.

-12-
Chimney Installation
CHIMNEY
Yourwoodfurnacemaybehookedupwithafactorybuiltormasonrychimney,matchingthediameterofthe
exhaust.Ifyouareusinga factorybuiltchimney,itmust complywithUL103or CSA-B365standard;therefore
it must be a Type HT (2100°F). It is extremely important that it be installed according to the manufacturer’s
specications.
Ifyouareusingamasonrychimney,itisimportantthatitbebuiltincompliancewiththespecicationsofthe
NationalBuildingCode.Itmustbelinedwithreclaybricks,metalorclaytilessealedtogetherwithrecement.
(Rounduesarethemostefcient).
Theinteriordiameterofthechimneyuemustbeidenticaltothefurnacesmokeexhaust.Auewhichistoo
smallmaycausedraftproblems,whilealargeuefavorsrapidcoolingofthegas,andhencethebuild-upof
creosoteandtheriskofchimneyres.Notethatitisthechimneyandnotthefurnacewhichcreatesthedraft
effect;yourfurnace’sperformanceisdirectlydependentonanadequatedraftfromyourchimney.
Donotconnectthisunittoachimneyueservinganotherappliance.
Thefollowingrecommendationsmaybeusefulfortheinstallationofyourchimney:
• Itmustriseabovetheroofatleast3’(0.9m)fromtheuppermostpointofcontact.
• Theexteriorportionshouldbedoubleortriplewallpipetoensureproperdraft.
• Thechimneymustexceedanypartofthebuildingorotherobstructionwithina10’(3.04m)distancebya
heightof2’(0.6m).
• Installationofaninteriorchimneyisalwayspreferabletoanexteriorchimney.Theinteriorchimneywillbe
hotterthananexteriorchimneythatisbeingcooledbytheambientairoutsidethehouse.Thereforethegas
whichcirculateswillcoolslower,thusreducingthebuild-upofcreosoteandtheriskofchimneyres.
• Thedraftcausedbythetendencyforhotairtorisewillbeincreasedwithaninteriorchimney.
• Usingarescreenattheextremityofthechimneyrequiresregularinspectioninordertoinsurethatitisnot
obstructedthusblockingthedraft,anditshouldbecleanedwhenusedregularly.
IMPORTANCE OF PROPER DRAFT
Draftis the force whichmoves air from the applianceup through the chimney.The amount of draftinyour
chimneydependsonthelengthofthechimney,localgeography,nearbyobstructionsandotherfactors.Too
muchdraftmaycauseexcessivetemperaturesintheappliance.Inadequatedraftmaycausebackpufnginto
theroomand‘plugging’ofthechimney.Inadequatedraftwillcausetheappliancetoleaksmokeintotheroom
throughapplianceandchimneyconnectorjoints.
Anuncontrollableburnorexcessivetemperatureindicatesexcessivedraft.Donotoperatewiththeuedraft
exceeding.06watercolumn/14.93Pascals.Thedraftcanbecheckedwithadraftgaugeormanometer.
Takeintoaccountthechimney’slocationtoinsureitisnottooclosetoneighborsorinavalleywhichmaycause
unhealthyornuisanceconditions.

-13-
MASONRY CHIMNEY
EnsurethatamasonrychimneymeetstheminimumstandardsoftheNationalFireProtectionAssociation(NFPA)
byhavingitinspectedbyaprofessional.Makesuretherearenocracks,loosemortarorothersignsofdeterioration
andblockage.Havethechimneycleanedbeforethefurnaceisinstalledandoperated.Whenconnectingthe
furnacethroughacombustiblewalltoamasonrychimney,specialmethodsareneededasexplainedinthe
“CombustibleWallChimneyConnectorPass-Throughs”Section.

-14-
COMBUSTIBLE WALL CHIMNEY CONNECTOR PASS-THROUGHS
MethodA.12”(304.8mm)ClearancetoCombustibleWall
Member: Using a minimum thickness 3.5” (89 mm) brick
and a 5/8” (15.9 mm) minimum wall thickness clay liner,
constructa wall pass-through.The clay liner mustconform
toASTMC315 (StandardSpecicationfor ClayFireLinings)
oritsequivalent.Keepaminimumof12”(304.8mm)ofbrick
masonrybetweentheclaylinerandwallcombustibles.The
clayliner shall runfrom the brickmasonry outer surfaceto
theinnersurfaceofthechimneyuelinerbutnotpastthe
innersurface.Firmlygroutorcementtheclaylinerinplace
tothechimneyueliner.
MethodB. 9” (228.6 mm) Clearance to Combustible Wall
Member: Using a 6” (152.4 mm) inside diameter, listed,
factory-built Solid-Pak chimney section with insulation
of 1” (25.4 mm) or more, build a wall pass-through with a
minimum9”(228.6mm)airspacebetweentheouterwallof
thechimneylengthandwallcombustibles.Usesheetmetal
supports fastened securely to wall surfaces on all sides, to
maintain the 9” (228.6 mm) air space. When fastening
supportstochimneylength,donotpenetratethechimney
liner(theinsidewalloftheSolid-Pakchimney).Theinnerend
oftheSolid-Pakchimneysectionshallbeushwiththeinside
ofthemasonrychimneyue,andsealedwithanon-water
soluble refractory cement. Use this cement to also seal to
thebrickmasonrypenetration.
MethodC.6”(152.4mm)ClearancetoCombustibleWall
Member:Startingwithaminimum24gauge(.024”[.61mm])
6”(152.4mm)metalchimneyconnector,andaminimum24
gaugeventilatedwallthimblewhichhastwoairchannelsof
1”(25.4mm)each,constructawallpass-through.Thereshall
be a minimum 6” (152.4) mm separation area containing
berglassinsulation,fromtheoutersurfaceofthewallthimble
to wall combustibles. Support the wall thimble, and cover
itsopeningwitha24-gaugeminimumsheetmetalsupport.
Maintainthe 6”(152.4 mm)space. There shouldalso bea
supportsizedtotandholdthemetalchimneyconnector.
Seethatthesupportsarefastenedsecurelytowallsurfaces
on all sides. Make sure fasteners used to secure the metal
chimneyconnectordonotpenetratechimneyueliner.
Method D. 2” (50.8 mm) Clearance to Combustible Wall
Member: Start with a solid-pak listed factory built chimney
sectionatleast12”(304mm)long,withinsulationof1”(25.4
mm)ormore,andaninsidediameterof8”(2inches[51mm]
largerthanthe6”[152.4mm]chimneyconnector).Usethis
asapass-throughforaminimum24-gaugesinglewallsteel
chimneyconnector.Keepsolid-paksectionconcentricwith
and spaced 1” (25.4 mm) off the chimney connector by
wayofsheetmetalsupportplatesatbothendsofchimney
section. Cover opening with and support chimney section
onbothsideswith24gaugeminimumsheetmetalsupports.
Seethatthesupportsarefastenedsecurelytowallsurfaces
onallsides.Makesurefastenersusedtosecurechimneyue
donotpenetrateueliner.
NOTES:
Connectorstoamasonrychimney,exceptingmethodB,shallextendinonecontinuoussectionthroughthe
wallpass-throughsystemandthechimneywall,tobutnotpasttheinneruelinerface.Achimneyconnector
shallnotpassthroughanatticorroofspace,closetorsimilarconcealedspace,oraoor,orceiling.

-15-
CHIMNEY CONNECTOR
Yourchimneyconnectorandchimneymusthavethesamediameterasthefurnaceoutlet.Ifthisisnotthecase,
werecommendyoucontactyourdealerinordertoinsuretherewillbenoproblemwiththedraft.
Thefurnacepipemustbemadeofaluminizedorcoldrollsteelwithaminimumthicknessof0.021”or0.53mm.It
isstrictlyforbiddentousegalvanizedsteel.
Yourconnector shouldbe assembled insuch awaythat themale section (crimpedend) ofthe pipe faces
down.Attacheachofthesectionstooneanotherwiththreeequidistantmetalscrews.Sealthejointswithfurnace
cement.
Thepipemustbeshortandstraight.Allsectionsinstalledhorizontallymustslopeatleast1/4inchperfoot,with
theupperendofthesectiontowardthechimney.Anyinstallationwith ahorizontalrunof furnacepipemust
conformtoNFPA211.YoumaycontactNFPA(NationalFireProtectionAssociation)andrequestthelatestedition
oftheNFPAStandard211.
Toinsurea gooddraft, thetotal lengthofthe furnacepipe shouldnever exceed8’ to10’ (2.4mto3.04 m).
(Except for cases of vertical installation, cathedral-roof style where the smoke exhaust system can be much
longerandconnectedwithoutproblemtothechimneyattheceilingoftheroom).
Thereshouldneverbemorethantwo90degreeselbowsinthesmokeexhaustsystem.
Installationofa“barometricdraftstabilizer”(replaceregister)onasmokeexhaustsystemisprohibited.
Donotusewithauedamper.Withacontrolledcombustionwoodfurnacesthedraftisregulateduponintake
ofthecombustionairinthefurnaceandnotattheexhaust.
To
Appliance

-16-
FACTORY BUILT CHIMNEY
Whenametalprefabricatedchimneyisused,themanufacturer’sinstallationinstructionsmustbefollowed.You
mustalsopurchase(fromthesamemanufacturer)andinstalltheceilingsupportpackageorwallpass-through
and“T”sectionpackage,restops(whereneeded),insulationshield,roofashing,chimneycap,etc.Maintain
properclearancetothestructureasrecommendedbythemanufacturer.Thechimneymustbetherequired
heightabovetherooforotherobstructionsforsafetyandproperdraftoperation.

-17-
OPERATING THE PRIMARY AND SECONDARY AIR SETTINGS
Primaryair-isthedrivingairsupplythatfeedsthereintheheater.Thisairisintroducedthroughthedamperin
thefeeddoortosustainthecombustion.
Secondaryair–istheairsupplythatistypicallyintroducedabovetheretoeffectively“re-burn”thesmoke
createdintheprimarycombustionbeforetheexhaustgassesexitthestove.Thisairispreheatedbeforebeing
injectedintotheheatersoitcanreactwith(re-burn)thesmokewhentheymix.
Whenincreasingtheamountofprimaryairsuppliedtotheheater,thesecondaryshouldalsobeincreasedas
welltoensureacleanburn.
RearPilot/TertiaryAir– Theairthat isintroducedat thebackof thereboxandistohelpsustain heatinthe
secondaryairtohelpensureacleanerburn.
Startup:DuringStart-upthePrimaryandtheSecondaryairadjustmentsshouldbeinthefullyopenorthe“High”
settingpositions.Thisallowsforthemaximumamountofcombustionairduringtheinitial start-uptoinsurethe
fastestandcleaneststart-up.Thesesettingsshouldremainopenuntilthestovehasheatedupandanadequate
rehasbeenestablished.Oncethereiswellestablished,boththeprimaryandthesecondaryairsettingscan
beadjusteddowntothedesiredheatsetting.Theprimaryandthesecondaryairmixinsidethereboxtoprovide
amoreefcientandcleanerburn.Weencouragethatyougettoknowyourstoveandhowitreactstoadjusting
boththeprimaryandthesecondaryairdamperssothatyoucanachievethebestburnpossibleforthetypeof
woodandthedraftsituationsinyourparticularinstallation.
AIR CONTROL’S
LOW BURN RATE SETTING
MAXIMUM BURN RATE SETTING
FULLY CLOSED
Rear Pilot Air Damper
FULLY CLOSED
Secondary Air Damper
FULLY CLOSED
Primary Air Damper
FULLY OPENED
Rear Pilot Air Damper
FULLY OPENED
Secondary Air Damper
FULLY OPENED
Primary Air Damper
LOW BURN RATE SETTING
MAXIMUM BURN RATE SETTING
FULLY CLOSED
Rear Pilot Air Damper
FULLY CLOSED
Secondary Air Damper
FULLY CLOSED
Primary Air Damper
FULLY OPENED
Rear Pilot Air Damper
FULLY OPENED
Secondary Air Damper
FULLY OPENED
Primary Air Damper
AIRCONTROL’S
LowBurnRate High Burn Rate
Primary Air Damper Fully Closed Fully Open
Rear Pilot Air Damper Fully Closed Fully Open
SecondaryAirDamper Fully Closed Fully Open

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Operation
Thetopdownmethodofrebuildingisrecommendedforthisappliance.Aftermakingsurethatthestoveair
intakecontrolsarefullyopen(openallthreeaircontrolstotheremaximumsetting).Placethelargestpiecesof
woodonthebottom,laidinparallelandclosetogether.Smallerpiecesareplacedinasecondlayer,crossways
totherst.Athirdlayerofstillsmallerpiecesislaidcrosswaystothesecond,thistimewithsomespacesbetween.
Thenafourthlayerofloose,smallkindlingandtwistednewspapersheetstopsoffthepile.
Higher efciencies and lower emissions generally result when burning air dried seasoned hardwoods, as
comparedtosoftwoodsortogreenorfreshlycuthardwoods.
DO NOT BURN:
1. Garbage;
2. Lawnclippingsoryardwaste;
3. Materialscontainingrubber,includingtires;
4. Materialscontainingplastic;
5. Waste petroleum products, paints or paint
thinners,orasphaltproducts;
6. Materialscontainingasbestos;
7. Constructionordemolitiondebris;
8. Railroadtiesorpressure-treatedwood;
9. Manureoranimalremains;
10. Saltwaterdriftwoodorotherpreviouslysaltwater
saturatedmaterials;
11. Unseasonedwood;or
12. Paper products, cardboard, plywood, or
particleboard. The prohibition against burning
these materials does not prohibit the use of re
startersmadefrompaper,cardboard,sawdust,
wax and similar substances for the purpose of
startingareinanaffectedwoodheater.
Burningthesematerialsmayresultinreleaseoftoxicfumesorrendertheheaterineffectiveandcausesmoke.
Deadwoodlyingontheforestoorshouldbeconsideredwet,andrequiresfullseasoningtime.Standingdead
wood can usually be considered to be about 2/3 seasoned. Splitting and stacking wood before it is stored
acceleratesdryingtime.Storingwoodonanelevatedsurfacefromthegroundandunderacoverorcovered
areafromrainorsnowalsoacceleratesdryingtime.Agoodindicatorifwoodisreadytoburnistocheckthe
pieceends.Iftherearecracksradiatinginalldirectionsfromthecenterthenthewoodshouldbedryenough
toburn.Ifyourwoodsizzlesinthere,eventhoughthesurfaceisdry,itmaynotbefullycured,andshouldbe
seasoned longer
Yourfurnacewasdesignedtoburnwoodonly;noothermaterialsshouldbeburned.Wasteandotherammable
materialsshouldnotbeburnedinyourfurnace.DONOTUSECHEMICALSORFLUIDSTOSTARTTHEFIRE.DONOT
BURNGARBAGE,GASOLINE,NAPTHA,ENGINEOIL,OROTHERINAPPROPRIATEMATERIALS.Anytypeofwoodmay
beusedinyourfurnace,butspecicvarietieshavebetterenergyyieldsthanothers.Pleaseconsultthefollowing
tableinordertomakethebestpossiblechoice.
TYPE WEIGHT
(LBS.CU.FT.,DRY) PER CORD EFFICIENCY RANKING SPLITS MILLIONSBTU’s/ CORD
Hickory 63 4500 1.0 Well 31.5
WhiteOak 48 4100 .9 Fair 28.6
Red Oak 46 3900 .8 Fair 27.4
Beech 45 3800 .7 Hard 26.8
Sugar Maple 44 3700 .6 Fair 26.2
BlackOak 43 3700 .6 Fair 25.6
Ash 42 3600 .5 Well 25.0
YellowBirch 40 3400 .4 Hard 23.8
Red Maple 38 3200 .3 Fair 22.6
PaperBirch 37 3100 .3 Easy 22.1
Elm/
Sycamore 34 2900 .2 Very Difcult 20.1
RedSpruce 29 1800 .1 Easy 16.1
ItisEXTREMELYIMPORTANTthatyouuseDRY
WOODonly.Thewoodshouldhavedriedfor
9to15months,suchthatthehumiditycontent
(inweight)isreducedbelow20%oftheweight
ofthelog.Itisveryimportanttokeepinmind
thatevenifthewoodhasbeencut forone,
two or even more years, it is not necessarily
dry, if it has been stored in poor conditions.
Underextreme conditions it mayrot,instead
ofdrying.Thispointcannotbeoverstressed;
the vast majority of the problems related to
theoperationofawoodfurnaceiscausedby
thefactthatthewoodusedwastoodampor
hasdriedinpoorconditions.
Theseproblemscanbe:
• Ignition problems
• Creosotebuild-upcausingchimneyres
• Lowenergyyield
• Blackenedwindows
• Incompletelogcombustion

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NOTICE: Tominimizetheriskofsmokespillagewhenopeningthedoorwithareinyourfurnace,crack
thedooropennomorethan1”andwaitforatleast10secondsbeforeopeningitmoretoallowpressure
stabilizationinsidethefurnace.
Smallerpiecesofwoodwilldryfaster.Alllogsexceeding6”indiametershouldbesplit.Thewoodshouldnotbe
storeddirectlyontheground.Airshouldcirculatethroughthecord.A24”to48”airspaceshouldbeleftbetween
eachrowoflogs,whichshouldbeplacedinthesunniestlocationpossible.Theupperlayerofwoodshouldbe
protectedfromtheelementsbutnotthesides.
TESTING YOUR WOOD
Whenthefurnaceisthoroughlywarmed,placeonepieceofsplitwood(aboutveinchesindiameter)parallel
tothedooronthebedofredembers.
Adjustall aircontrols tothere maximumsettings andclose thedoor. Ifignition ofthepiece isaccomplished
within90secondsfromthetimeifwasplacedinthefurnace,yourwoodiscorrectlydried.Ifignitiontakeslonger,
yourwoodisdamp.
Ifyourwoodhissesandwaterorvaporescapesattheendsofthepiece,yourwoodissoakedorfreshlycut.
Donotusethiswoodinyourfurnace.Largeamountsofcreosotecouldbedepositedinyourchimney,creating
potentialconditionsforachimneyre.
THE FIRST FIRES
The fresh paint on your furnace needs to be cured to preserve its quality. Once the fuel charge is properly
ignited,onlyburnsmallresinyourfurnacefortherstfourhoursofoperation.Neveropentheaircontrol’smore
thannecessarytoachieveamediumburnrate.
Makesurethatthere’senoughaircirculationwhilecuringthefurnace.DONOTconnectyourfurnacetothe
duct work during this curing process. The odors could be smelled during the 3 or 4 rst res. Never start your
furnaceoutside.Youwillnotbeabletoseeifyouareoverheating.
LIGHTING YOUR WOOD FURNACE
1. Makesurethatyourfurnacehasbeeninstalledaspertheinstructionsoutlinedinthismanualandtheproper
powerissuppliedtoit.
2. Openthefuelloadingdoor.
3. Note:Iftherealreadyisabedofhot/glowingcoalsinthecombustionchamber,proceeddirectlytothe
Preheatingstep.
4. Placeseveralpiecesofsmalldrykindlinginthefrontofthecombustionchamberdirectlyontherebricks.
5. Layafewtwistsofnewspaperoverthekindling.
6. Laymoredrykindling(crisscrossing)ontopofthepreviouslayersandpossiblyafewmoretwistsofnewspaper
ifneeded.
7. Lightthelowestnewspaperinthestack.
Note:Insomedraftsituationyoumayberequiredtoleavethedoorcrackednomorethan½”onlytillareis
establishedinthestack
Nochemicalproductshouldbeusedtolightthere.
PREHEATING YOUR WOOD FURNACE
1. Oncethekindlingisburningwellortheglowingcoalbedisstirredup,lay2or3piecesofwell-seasoned
cordwooddownsothattheamefromthekindlingrecancirculatearoundthelogsandclosethedoor.
Note:Youmayneedtoaddmorekindlingtohelpignitethecordwood.
2. Before loading your furnace fully you will want a well-established re in the combustion chamber. This
typicallytakes15-20minutes.
HEATING WITH YOUR WOOD FURNACE
1. Spread the re and coals evenly towards the center of the combustion chamber before loading your
furnacefullyoraddingmorewood.
2. Avoidoverllingthecombustionchamber.Airmustbeallowedtocirculatefreelythroughtheupperportion
ofthecombustionchamberforthestovetoperformbest.Typicallythiswouldmeannottoloadyourfurnace
morethan¾ofthewayupthedooropening.
CAUTION:Neveralterthe“damperslide”ortheadjustmentrangetoincreaseringforanyreason.Doingso
couldresultinheaterdamageandwillvoidyourwarranty.

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OPERATION
Controlledcombustionisthemostefcienttechniqueforwoodheatingbecauseitenablesyoutoselectthe
typeofcombustionyouwantforeachgivensituation.Thewoodwillburnslowlyifthewoodfurnaceairintake
control’sareadjustedtoreducetheoxygensupplyinthecombustionchambertoaminimum.Ontheotherhand,
woodwillburnquicklyiftheaircontrol’sareadjustedtoadmitalargerquantityofoxygeninthecombustion
chamber.Realoperatingconditionsmaygiveverydifferentresultsthanthoseobtainedduringtestingaccording
tothespeciesofwoodused,itsmoisturecontent,thesizeanddensityofthepieces,thelengthofthechimney,
altitudeandoutsidetemperature.
RELOADING
Onceyouhaveobtainedagoodbedofembers,youshouldreloadtheunit.Inordertodoso,opentheair
controlstomaximumafewsecondspriortoopeningthefurnace’sdoor.Thenproceedbyopeningthedoorvery
slowly.Thenbringtheredemberstothefrontofthefurnaceandreloadtheunit.
Foroptimaloperationofyourwoodfurnace,werecommendyoutooperateitwithawoodloadapproximately
equivalenttothe3/4oftheheightofrebricks.
Itisimportanttonotethatwoodcombustionconsumesambientoxygenintheroom.Inthecaseofnegative
pressure,itisagoodideatoallowfreshairintheroom,eitherbyopeningawindowslightlyorbyinstallingafresh
airintakesystemonanoutsidewall.
Creosote-FormationandNeedforRemoval-Whenwoodisburnedslowly,itproducestarandotherorganic
vapors,whichcombinewithexpelledmoisturetoformcreosote.Thecreosotevaporscondenseintherelatively
cool chimney ue of a slow-burning re. As a result, creosote residue accumulates on the ue lining. When
ignited,thiscreosotemakesanextremelyhotre.Thechimneyconnectorandchimneyshouldbeinspectedat
leasttwicemonthlyduringtheheatingseasontodetermineifacreosotebuild-uphasoccurred.Ifcreosotehas
accumulated(3mmormore),itshouldberemovedtoreducetheriskofachimneyre.
Westronglyrecommendthatyouinstallamagneticthermometeronyoursmokeexhaustpipe,approximately
18” above the furnace. This thermometer will indicate the temperature of your gas exhaust fumes within the
smokeexhaustsystem. Theideal temperatureforthese gasesis somewherebetween 275°Fand500°F. Below
thesetemperatures,thebuild-upofcreosoteispromoted.Above500degrees,heatiswastedsinceatoolarge
quantityislostintotheatmosphere.
TO PREVENT CREOSOTE BUILD UP
Alwaysburndrywood.Thisallowscleanburnsandhigherchimneytemperatures,thereforelesscreosotedeposit.
Leavetheaircontrolfullopenforabout5min.everytimeyoureloadthefurnacetobringitbacktoproper
operatingtemperatures.Thesecondarycombustioncanonlytakeplaceifthereboxishotenough.
Alwayscheckforcreosotedepositonceeverytwomonthsandhaveyourchimneycleanedatleastoncea
year.If achimney orcreosote reoccurs, closeall dampers immediately.Wait forthe reto goout andthe
heaterto cool, then inspect the chimney for damage. If no damage results, performachimney cleaning to
ensurethereisnomorecreosotedepositsremaininginthechimney.
ASH DISPOSAL
Wheneverashesget3to4inchesdeepinyourreboxorashpan,andwhentherehasburneddownand
cooled, remove excess ashes. Leave an ash bed approximately 1 inch deep on the rebox bottom to help
maintainahotcharcoalbed.
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,awayfromallcombustiblematerials,pendingnaldisposal.
Theashesshouldberetainedintheclosedcontaineruntilallcindershavethoroughlycooled.
Ifthereisasootorcreosotere:
• Establisharoutineforthestorageoffuel,carefortheapplianceandringtechniques.
• Checkdailyforcreosotebuildupuntilexperienceshowshowoftencleaningisnecessary.
• Beawarethatthehotterthere,thelesscreosoteisdeposited,andthatweeklycleaningcanbenecessary
inmildweather,eventhoughmonthlycleaningcanbeenoughinthecoldestmonths.
• Haveaclearlyunderstoodplantohandleachimneyre.
WARNINGS:
• Neveroverreyourfurnace.Ifanypartofthefurnacestartstoglowred,overringishappening.Readjust
theairintakecontrolatalowersetting.
• Theinstallationofalogcradleorgratesisnotrecommendedinyourwoodfurnace.Buildredirectlyon
rebrick.
• Neverputwoodabovetherebrickliningoftherebox.