Harman SF1500A Installation instructions

3-90-70744R13_11/13
Model(s):
Hot Air Furnace: SF1500A & SF2500A
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
Call your dealer for questions on Installation, Operation, or Service.
NOTICE: DO NOT discard this manual!
Please read this entire manual before
installation and/or use your new boiler.
Failure to follow these instructions could
result in property damage, bodily injury
or even death.
• Donotstoreorusegasolineorotherammablevapors
andliquidsinthevicinityofthisoranyotherappliance.
• Donotoverre-Ifanyexternalpartstartstoglow,you
areoverring.Reducefeedrate.Overringwillvoid
yourwarranty.
• Complywithallminimumclearancestocombustibles
asspecied.Failuretocomplymaycausehousere.
WARNING
Tested and approved for solid-fuel only (wood, coal).
Burningofanyothertypeoffuelvoidsyourwarranty.
CAUTION
!
Checkbuildingcodespriortoinstallation.
• InstallationMUSTcomplywithlocal,regional,stateand
nationalcodesandregulations.
• Contactlocalbuildingorreofcialsaboutrestrictions
andinstallationinspectionrequirementsinyourarea.
CAUTION
!
Safety Notice
IF THIS HARMAN BOILER IS NOT PROPERLY
INSTALLED, A HOUSE FIRE MAY RESULT. FOR YOUR
SAFETY, FOLLOW INSTALLATION DIRECTIONS.
SAFETY NOTICE
PLEASE READ THIS ENTIRE MANUAL BEFORE YOU INSTALL AND/OR USE YOUR NEW BOILER. FAILURE TO
FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY, OR EVEN DEATH.
IF THIS HARMAN BOILER IS NOT PROPERLY INSTALLED, A HOUSE FIRE MAY RESULT. FOR YOUR SAFETY,
FOLLOW INSTALLATION DIRECTIONS.
CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
CONTACT YOUR LOCAL AUTHORITY (SUCH AS MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE
PREVENTION BUREAU, ETC.) TO DETERMINE THE NEED FOR A PERMIT.
SAVE THESE INSTRUCTIONS
Installation & Operating Manual
“Ce manuel est disponible en Français sur demande”

2
3-90-70744R13_11/13
Table of Contents
PackingList     3
Installation     4
MountingBlower&FilterBox   6
Wiring      7
DuctWork     8
Operation     9
SafetyTips     10
ChimneyTroubleshooting   10
Maintenance     11
Specications     12

CoilInstallation     13
ServiceParts     15
Warranty     19
= Contains updated information

Harman® Central Heating Appliances are built and
tested to be complete Home Heating solutions. As with
any Central Heat system, a backup heating system may
be required in the event of power outages or during
appliance service or maintenance.

3
3-90-70744R13_11/13
Packing List for SF1500 & SF2500
AutomaticDraftControl
Blower-(SoldSeparately)
(2)BlowerBrackets-(Includedwithblower)
FilterBoxKit(3pieces)+Filter
FanControl/HighLimit
3-SpeedFanSwitch
Thermostat
JunctionBox
Relay
(4)1/4X3/4bolts&(4)FilterBoxMountingClips
36”FlexConduit
(1)StraightConduitFitting
(1)ElbowConduitFitting
AshPan
ShakerHandle
Owner’sManual
WarrantyRegistration
Filter Box Kit
Flex Conduit & Fittings
Junction Box
Shaker Handle
Ash Pan
Thermostat
Fan Control
/ High Limit
Relay
3-Speed Fan Switch
Blower BracketsAutomatic Draft Control
Blower
Filter Box
Mounting Clips
Filter

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3-90-70744R13_11/13
To ensure a safe installation, it is recommended that this furnace be installed by a qualied installer.
Thesheetmetaltopandsidescanbeeasilyremovedtoreducethechanceofdentsorscratchesonthepaintedsurfaces.
Toremovethesheetmetal,rstliftoffthetopsection.Now,thesidescanberemovedbyliftingupandoutawayfromthe
furnace.

Caution: This furnace must not be installed closer than 24 inches at the sides and 30 inches from the rear to
combustible materials. The unit may only be installed on a non-combustible oor surface such as concrete oor or
concrete pad on dirt oor. The hot air plenum must be a minimum of 2 inches from the ceiling or other combustibles
above the plenum.
Locatethefurnaceasclosetothechimneyaspossiblewhilestillmaintainingtheaboveclearances.Nomorethan8feetof
stovepipeshouldbeused,includingtwoorless90°elbows.Allhorizontalrunsofpipeshouldhaveaminimum1/4in.rise
perfoot.Allstovepipemustbe24gaugeorthicker.
Re-installthesheetmetalbyslidingthegrooveonthebottomofeachsidepaneloverthesteelliponthefurnace.Thetop
sheetmetalpieceholdsthesidesinplace.
Installation

5
3-90-70744R13_11/13
Bolt the automatic
draft control to the
bottom door. Be sure
toholdtheunitstraight
while tightening.After
the automatic draft
control is mounted,
the two wires must
bestrungthroughthe
exible conduit and
two ttings supplied.
The knockout plug of
thejunctionboxmust
be removed to install
the conduit tting.
Checkthedoorofthe
automaticdraftcontrol
to assure proper
operation. Warning: Keep pieces of wood or coal out of
thedraftdooropeningmechanism,asthiscouldcausethe
doortostick.
NOTE:Oilthehingeatthebeginningoftheheatingseason
withalightoil.
Thejunctionboxisbestmountedonthesideofthefurnace
about1in.backand8in.fromthetopofthesheetmetal
side.(Fig.C)Ifthislocationisinconvenient,anywhereon
therightsidewillwork.
SF1500 and SF2500.
This gure represents the models; SF1500 and SF2500
It’s intention is to represent the approximate location of
thevariouscontrols.Thisdrawingmayalsobeusedasa
recommendationforroutingofthewiringandapproximate
dimensionofcontrolspacing.
Please note that this
drawingisforreference
only. Each specic
installationwillvary.
Installation
Venting Guidelines.
Your Harman hot-air furnace must be vented to it’s own
separateue-lined“ClassA”chimney,notlessthan8”X8”
insize.Thechimneymustbecapableofprovidingadraft
reading of at least .06” water column on a draft meter, in
ordertofunctionproperly.TheChimneymustbeaminimum
of 16 ft. high, and must be two feet higher than anything
within10ft.Thechimneymustalsobeatleast3ft.higher
than the point at which it exits or passes by the roof. A
barometricdampermustbeinstalledintheuetoeliminate
excessivedraft.Anyhorizontalsections ofconnectorpipe
musthaveatleast1/4in.perfootrise.Limitthenumberof
elbowstotwoorless.Alljointsintheconnectorpipemust
besecuredwithsheetmetalscrews.
Assembly.
Bolttheshakerhandletotheblockonthelowerleftsideof
thefurnace,usingtheboltsandlock-washersprovided.
Bolt the two manual draft controls to the front load door.
Proper installation allows the draft controls to open
approximately1/2”fromthedoorsurface.SeeFigure1.

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3-90-70744R13_11/13
Mounting The Blower And Filter Box
Positionthelterboxbetweenthebracketsontherearofthefurnace,withthebottomoftheboxrestingontheangeatthe
bottomofthefurnace.Insertthemountingclipsintothebracketslotstosecurethelterbox.(seeFigure2)Next,installthe
blowerbracketsontotheblowerbeingsuretoinstalltherubberfeetintothebrackets.All hardware, brackets, etc. for the
blower, will be found in the carton with the blower.Next,positiontheblowerinthelterbox,centeredbehindtheinlet
holeandallowapproximately1/8in.spacebetweentherearofthefurnaceandthebloweroutlet.Now,installthelterrail
ontothelterbox.NOTE:Thelterrailisbestinstalledonthesidetowardtheshakerhandle,sothatanypipesfromthehot
watercoildonotinterferewithlterinstallationorremoval.
NOTE:Beforeproceedingwiththeinstallationoftheaccessdoor,itissuggestedthatthewiringbecompleted.
Theaccessdoorisinstalledbyslippingtheangeonthebottomoftheaccessdooroverthebottomrailofthelterbox
opening,thenpushthetopofthedooragainstthetopofthelterboxopeningandsecurewithasheetmetalscrew.
Installation
Figure 2
Filter box mounting clips
1/8 in. space between
blower and furnace

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3-90-70744R13_11/13
Installation - Wiring
Wiring
Beforebeginninganywiring,studytheappropriatewiringdiagramforyourunit.AlsoreferbacktoguresCorDforan
exampleofwhatthecompletedjobwilllooklike.It is your responsibility to follow all state and local electrical codes.
Locatethebestplacetoroutethepowerfortheblower,anddrilla7/8”holeinthelterbox.Thisholesizewillaccommodate
a“romex”connector.Attachtheblowerandpowerwiresasshownontheappropriatewiringdiagram.
Onceyouhavetheplenuminstalled,thefancontrolwithhighlimitswitchcanbeinstalled.TheFancontrol/highlimitswitch
ispackagedwitha jumper between the twosetsofterminalsinside.REMOVETHEJUMPERWIREINSIDETHEFAN
CONTROL.Thefancontrolshouldbeinstalledintherightsideoftheplenumand12to18inchesabovethetopofthe
furnace.Aseparateconduitshouldberunfromthefancontroltothejunctionbox.
Mountthethermostatinacentrallocationoftheareayouwanttoheat.Runtwowirestothejunctionbox,fromtheheating
terminalsonthethermostat.22gaugeorthickerwireisacceptable.
The next step is to run a 120 volt line from your breaker panel to the junction box.Attach all wires according to the
correspondingwiringdiagram,andinstalltherelayintothejunctionbox.DONOTTURNONTHEBREAKERUNTILALL
WIRINGISCOMPLETEANDTHERELAYISSECURED.
SF1500 and SF2500 Wiring Diagram

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3-90-70744R13_11/13
Duct Work and Operating Instructions
Duct Work.
Thisgureshowsatypicalductsystemlayout.
Besuretheentiresystemisproperlysizedto
providethecorrectstaticpressureforoptimum
blower performance. Have any new duct
systemdesignedbyaHVACprofessional.
Operating Instructions
Adjusting Automatic Draft Control - Inorder
foryournew furnacetofunction,thecontrols
must be properly adjusted. The heat output
isregulatedbytheautomaticdraftcontrol,on
the bottom door of the furnace. Refer to the
illustrations at right; The electric draft motor
(A)opensandclosestheapperdoor(B).The
apperdooropenstofeedmoreairtothere
andclosestoreducetheairtothere.Themaximumairowcanbeadjustedbyturning
theadjusterbolt(C)counter-clockwiseformoreairandclockwiseforlessair.NOTE: To 
preservemotorlife,alladjustmentsofthisboltshouldbedonewhiletheapperdoorisin
theclosedposition.Theidleadjuster(D)controlstheminimumamountofairthatenters
thereboxwhentheapperdoorisclosed.Adjustmentismadebyturningtheadjuster
verticalforzeroair,orhorizontalformaximumidleair.Itisbesttostartatamediumsetting
asshownatright.
Adjusting the fan control-Shutoffthepoweratthecircuitbreakerbeforeremovingthe
fancontrolcover.Makesurethecopperjumper(circledbelow)isremovedbeforeusing
the furnace. Note the three pointers on the dial. The one on the right is the high limit
adjustment.Pre-setat200degrees, it’sfunctionistoclosetheautomaticdraftcontrol
apperdoorifthetemperatureintheplenumreaches200degrees.Do not change this
setting.Thecenterpointer adjuststhetemperature atwhichthe blowerstarts.Agood
initialsettingforthisis150degrees.Thepointerontheleftistoadjustthetemperatureatwhich
theblowerstops.Agoodinitialsettingforthispointeris100to110degrees.Ifitissettoolow,
theairwillfeelcoolcomingoutoftheregistersattheendoftheblower
cycle.
Thermostat-Setthethermostattothedesiredtemperature.Whenmore
heatisneeded,thethermostatopenstheautomaticdraftcontrolapper
door. This allows air into the rebox, which raises the output of the
re.Whenthetemperatureintheplenumreachesthesettemperature
ofthecenterpointeronthefancontrol,theblowerwillbeginblowing
heatedairthroughtheductwork.Whenthethermostatreachesit’sset
point,theautomaticdraftcontrolclosestheapperdoor,thus,reducing
theoutputofthe re.Asthetemperatureintheplenumdrops to the
setpointofthe left pointer on the fan control, the blower willstop.A
solid fuel re cannot cease output immediately, therefore, your room
temperaturemayexceedthethermostatsettingattimes.Youalsomay
notice times that the blower runs for a short period even though the
draft control is closed.Again, you can’t just stop a wood or coal re
instantly,andtemperaturemaybuildenoughtoruntheblower.Thisis
normalandwillbenoticedmorewithcoalthanwithwood.
Return Air Supply Trunk
Plenum
Figure 5
Figure 6
Figure 7

9
3-90-70744R13_11/13
Curing Paint -Duringtherstfewhoursofburning,ablue
smokewillbeobservedrisingfromthepaintedsurfaceof
thefurnace.Itisadvisabletoincreasetheamountoffresh
airintheroomduringthisbreaking-inperiod.Thismaybe
achievedbyopeningdoors,windows,etc.Don’tbealarmed.
Thisisnormal.
Starting a Wood Fire - Openthebottomdoortoincrease
thedraft.Takeabouteightsheetsofnewspaper,crumbled
into balls and place on top of the grates. Next, lay some
nekindlingontopofthepaper.Thiskindlingmustbedry
andnolargerthan3/4”diameter,andshouldbelayeredin
acrisscrosspatterntoallowgoodairow.Then,laysome
slightly larger pieces (2” diameter) of wood on top of the
kindling.Lightthepaperatthebottomjustinsidethedoor.
Now close loading door and allow kindling and wood to
catchre.Afteraboutveminutes,closethebottomdoor
andopentheloadingdooraninchortwoforafewseconds
beforeopeningcompletely.Thismethodwillallowthesmoke
toclearawayfromthedooropening.Nowthereshouldbe
wellestablishedandreadyforsomelargerwood.Addfour
orvepiecesof3”to4”diameterwood.Closeloadingdoor
andopenbottomdooragain.Letburnforabout5minutes.
Nowopenloadingdoorusingthesamemethodasbefore,
alwaysclosingthebottomdoorbeforeopeningthetopdoor.
Nowloadthereboxwithwoodtothedesiredfullness.All
Harmanfurnacesmaybeloadedwithwoodasfullaspossible
forhighoutputandlongburntime.Thenclosethedoorand
allowallthewoodtocatchre.Thebottomdoormayagainbe
openedtospeedtheprocess.Theobjectistogetthewood
burningwellenoughsoitwillnotgooutwhentheautomatic
draftshutsbacktotheidlesetting.
NOTE:Whenthebottomdoorisopen,theautomaticdraft
cannotfunctiontoreducetheamountofairtotherebox.
Forthisreason,thefurnacecouldoverheat.
Operating Instructions
Afterthewoodisburningwell,closethebottomdoor.The
automatic draft control will now regulate the re. The idle
control(Fig.6)ontheapperdoormustbeadjustedsothe
redoesnotgooutoroverheat.Experiencewilldictatethe
bestsetting.Normallythetwomanualdraftcontrolsonthe
loadingdoorarekeptclosedtoburnwood.
Starting A Coal Fire - Usethesameprocedureasforwood
exceptdonotgotolargediameterwood.Usewoodabout2”
indiametermaximum.Thissizewillformveryhotwoodcoals
inlesstime.Hereagain,thebottomdoormaybeopenedto
speedtheprocess.Whenasubstantialbedofredwoodcoals
aredeveloped,startaddingathinlayerofcoal.Peaornut
sizedcoalisbetterforstartingarethanstovecoal.When
therstlayerisburningwithsomeblueame,continueto
addthinlayersofcoaluntilthereisasolidbedofburning
coal.Leteachlayerburnablueamebeforeaddinganother
layer.Layerscanbeaddeduntilthebedisapproximatelyten
inchesdeep.Thisisaboutatthetopoftherebrick.Most
usersndthatiftheykeepthetwomanualdraftcontrolsopen
aboutonequarterturn,ithelpskeepthegassesburnedoff.
NOTE:Closethebottomdoorassoonasthedesiredcoal
bedismade.
Loading - Coal should never be added unless there is
a reasonably hot re. The coal bed should be bright and
vigorous.Ifthereisburninghotandthereisadeepbedof
coals,fullloadsofcoalcanbeaddedatanytime.However,
ifthereisnot a deepbedofcoals,itis best to addsmall
amountsofcoalatrst.
Shaking -Shakingshouldbedoneonlywhenthereisawell
establishedre.Thefrequencyofshakingwilldependonthe
degreeofburning.Shakingshouldbedonewheneverthe
furnaceisrefueled.BestresultsforshakingHarmangrates
willoccurwhenshortchoppystrokesareusedratherthan
longevenstrokes.
WARNING
!
NEVER LEAVE THE BOTTOM DOOR OPEN WHILE
FURNACE IS UNATTENDED!

10
3-90-70744R13_11/13
Theamountofshakingiscritical.Toomuchwilldisruptthe
rebedandtoolittlewillrestricttheairow.
Theproperamountnormallyoccurswhenredcoalsrststart
todropthroughthegratesintotheashpan.
Ashes -Ashesshouldneverbeallowedtoaccumulateinthe
ashpitsothattheyinanywayimpedetheowofcombustion
airtothere.Excessashaccumulationcancausethere
togooutandalsocancauseseveredamagetothegrates
becauseoftheabsenceofacoolingowofairbeneaththem.
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disposal.Iftheashes
aredisposedofbyburialinsoilorotherwiselocallydispersed,
theyshouldberetainedintheclosedcontainer[outsidethe
dwelling)untilallcindershavethoroughlycooled.
Coalproducesconsiderablymoreashthanwood.Sothe
intervals between emptying are much shorter. For equal
heatoutput,coalwillproduceseventotentimesmoreash
thanwood.
Operating Instructions/Safety Tips
Withtheexceptionofstartuporincreasingheatfromalow
re, or removing ashes, the bottom door should be kept
closed.NeverinstallaHarmanfurnacetoachimneywitha
historyofdowndrafts.
KEEP CHILDREN AWAY - MAY CAUSE SERIOUS BURNS.
CAUTION
!
ASHES SHOULD NEVER BE ALLOWED TO
ACCUMULATE ABOVE THE TOP OF THE ASH PAN.
ASHES IN CONTACT WITH THE BOTTOM OF THE
GRATES ACT AS AN INSULATOR, INTENSIFYING THE
HEAT ON THE GRATES, AND COULD CAUSE THEIR
WARPAGE. WITH AN EXCESSIVE ASH BUILDUP,
PRIMARY COMBUSTION AIR IS RESTRICTED. THUS
THE UNIT’S OUTPUT COULD BE REDUCED.
Draft Control Settings - The idle air adjustment on the
apperdoormayneedtobeadjustedslightlylessforcoal
thanforwood.Hereagain,experiencewilldictatethebest
setting.Themaximumairadjustmentboltcanbesetatthe
maximumpositionforquickrecovery.Whenalongerthan
normalburn time is desired, themaximum air adjustment
canbereduced.Neveradjustthemaximumairboltwhen
theapperdoorisopened.SeeFig.6.
Safety Tips
Whenopeningtheloadingdoor,itshouldbecrackedopen
slightlyforafewsecondstoallowoxygentoburnanygases
thatmaybepresentandtoallowsmoketobedrawnaway
fromthedoor.
Wheneverthebottomdoorisopen,itshouldbeclosedbefore
openingtheloadingdoor.Thisistoincreasedraftthrough
theloadingdoorandpreventexcesssmokefromescaping.
Thereboxshouldneverbelledwithexcessivecoalsothat
theueexitisblockedorimpededinanyway.Burningcoal
generatescarbonmonoxide.Iftheuegasexitisblocked,
thecarbonmonoxidecanbeforcedoutofthefurnaceinto
theroomwithpossiblefatal consequences.
Chimney Troubleshooting
Not Enough Draft -Chimneyistoolow.Achimneyshould
betwofeethigherthananythingtenfeetaroundit.
Airmaybeleakinginaroundaloosettingclean-outdoor,
uepipemaynotbetightatjoints,orthemasonrymaybe
defective.
Chimneymaybeblockedwithcreosoteorbirdnests,etc.
Impropersizedchimneyorstovepipe.
Toomanyelbows.
Distance of more than eight feet between furnace and
chimney.
Down Drafts - Trees or other topographical barriers may
impede the chimneys operation causing a down draft
condition to exist. This can also be caused by adjacent
buildingsorchimneys.
Creosote and Condensation - Ifcreosoteorcondensation
runsoutofthechimneyorstovepipe,checkthefollowing.
Chimneycaporliningmaybedefective.
Furnace may be too far from chimney, not allowing the
chimneytogetwarm.
Woodbeingburnedmaybegreenorwet.
Unitmaybetoolargeforhomecausingwoodtobeburned
tooslow.
Excessive Draft -Thiscanbecontrolledwithabarometric
draftcontrolonthestovepipe.
CAUTION
!
CAUTION: ALL SURFACES OF FURNACE ARE HOT.
DO NOT TOUCH. KEEP CHILDREN AWAY. SERIOUS
BURNS WILL RESULT IF TOUCHED. THIS IS A HEAT
PRODUCING APPLIANCE.
FUEL/FIRING WARNINGS -
DANGER! FIRE HAZARD! DO NOT USE CHEMICALS
OR FLUIDS TO START OR “FRESHEN UP” A FIRE.
SEVERE BODY BURNS OR A FIRE IN YOUR HOME
COULD RESULT. DO NOT BURN GARBAGE, GASOLINE,
THINNERS, DRAIN OR ENGINE OIL, KEROSENE, OR
FUEL OIL, ETC. AN EXPLOSION, A HOUSE FIRE OR
PERSONAL INJURY COULD RESULT. KEEP ALL SUCH
LIQUIDS WELL AWAY FROM THE FURNACE WHILE IN
USE.

11
3-90-70744R13_11/13
Maintenance
The spiral chamber is basically self-cleaning. However, if
thereisadraftproblemandyouhavebeenburningwood
foralongtimewithlittleheatdemand,thespiralchamber
mayneedcleaning.Softcoalwillalsorequiremorefrequent
cleaning. To clean, remove stovepipe and scrape the
creosotefromthefrontandtopofthechamberandremove.
Therearofthechamberwillnotaccumulatecreosote.
NOTE:1/8”to1/4”ofcreosoteinthespiralchamberisnormal.
Creosotecanbeburnedoffbyburningcoalforafewdays.
Firebricksmaybecomecrackedduringthecourseofnormal
operation.Acrackedbrickthatisstillinplaceisstilldoingits
jobandneednotbereplacedimmediately.Ifabrickisbroken
andhasfallenoutofplace,itshouldbereplacedimmediately.
TherebrickusedintheHarmanfurnacesareinexpensive
andeasytoreplace.
Theblowermanufacturerrecommendstheblowermotorto
beoiledonceayearwith10to20dropsoflightweightoil
[checkinstructionspackedinblowerbox).
Maintenance

12
3-90-70744R13_11/13
Specications
SF1500 SF2500
Complete Complete
Heating Capacity- square ft. 2200 3200
Approximate BTU Input 90,000 120,000
Blower Size 1000cfm 1000cfm
Automatic Draft Standard Standard
Filter Box & Filter Standard Standard
3-Speed Fan Switch Standard Standard
Fan Control / High Limit Standard Standard
Thermostat Standard Standard
Domestic Hot Water Coil Optional Optional
Firebox Dimensions - Inches 16Wx22Lx20.5H 18Wx26Lx21.5H
Recommended Log Length 18in. 22in.
Maximum Log Length 22in. 26in.
Flue Size 6in. 7in.
Filter Size 14X20 14X20
Number of Grates 4 5
Weight 580Lbs. 700Lbs.
Plenum Dimensions 20X20 20X20
Clearance to Combustibles- Rear 30in. 30in.
Clearance to combustibles- Side 24in. 24in.
Dimensions:
A: 25in. 26in.
B: 20in. 20in.
C: 46.5in. 47.5in.
D: 27.75in. 31in.
E: 20in. 20in.
F: 40in. 41.75in.
G: 16.5in. 16.5in.
H: 44.5in. 47.5in.
K: 27.5in. 27.5in.
H
F
G
D
E
K
A
B
C

13
3-90-70744R13_11/13
Special Instructions
Hot Water Out Cold Water In
Existing Water
Heater
Rear of Furnace
10 Feet Maximum
Drain
Valve
4
Temp / Pressure
Relief Valve Automatic
Air Valve
Pressure
Relief Valve
(Must be
within 2 feet of coil)
12
33
5
Plumbing Diagram For Thermo-Siphon Method - Maximum Distance = 10 Feet
Placeoneofthesuppliednutsoneachlegofthecoil.Placethecoilthroughtheholesonthebackofthefurnace,andadjust
thenutssothatthepipesstickoutabout1¼to1½inchesfromtherearofthefurnace.Placetheatwashersandgaskets
overeachpipeandtightenthenuts.Youarenowreadytorunthepiping.
Thissimplemethodisthemosteconomical.However,theexistingwaterheatermustbelessthan10feetfromthefurnace.
Thewaterinlet,wheretheTemperature/PressureReliefvalveislocated,mustbehigherthanthetoplegofthewatercoil.
Thewaterheatershouldbeelevated,ifnecessary,toallowforproperthermo-siphonaction.(Themethodbywhichhotwater
willcirculateautomaticallythroughthesystem.)
A. Shutoffthewaterheaterandthewatersupplytoit.Drainthetankcompletely.
B. RemovetheTemp./Pressurereliefvalveanddiscard.Installashort3/4in.nippleandtee(1)alongwithanewrelief
valve.
C.Run3/4in.coppertubingbetweenthewatertankandthetoplegofthecoil.Installa3/4inventelbowandautomatic
“oattype”airvent(2)inthehighpointoftheline.Within2feetofthetoplegofthecoil,installa150lb.pressurerelief
valve(5).Run3/4in.tubingfromthereleaseexitofbothreliefvalvesdownward(3)sothehotwatercanescapeinthe
eventofanoverheatsituation.
D.Removethedrainvalve,atthebottomofthetank.Installashort3/4in.nippleandteeandre-installthedrainvalveto
thetee(4).Run3/4in.tubingbetweenthedrain/teecombinationandthelowerlegofthewatercoil.Afterallofthe
connectionsaresecured,rellthewatertank.Turn on the water heater only after the tank has been completely relled.
Coil Installation:

14
3-90-70744R13_11/13
Special Instructions
4
5
6
Hot Water Out Cold Water In
Optional Gate
Valve to Control
Rate of Flow
Circulator Pump
Drain
Valve
Distance Between Units = 10 Feet or More
7
Pressure
Relief Valve Automatic
Air Valve
Pressure
Relief Valve
(Must be
within 2 feet of coil)
12
33
8
Aquastat, close on rise.
Optional
Circulating Pump Method - Distance = 10 Feet or More
Thismethodisusedwhenthewaterheatertankismorethantenfeetawayfromthefurnaceorthefurnaceisonahigher
levelthanthewaterheatertank.Inadditiontoacirculatorpump,youmaywanttoaddaaquastattothermostaticallycontrol
thepumpaccordingtowatertemperature.Thisisoptionalandnotnecessaryifthecirculatorpumpisleftruncontinuously.
Anotheroptionisagatevalveplacednearthepumptocontroltherateofwaterow.
A. Shutoffthewaterheaterandthewatersupplytoit.Drainthetankcompletely.
B. RemovetheTemp./Pressurereliefvalveanddiscard.Installashort3/4in.nippleandtee(1)alongwithanewrelief
valve.
C.Removethedrainvalve,atthebottomofthetank.Installashort3/4in.nippleandteeandre-installthedrainvalvetothe
tee(4).
D.Installacirculatingpumpasshown(6).Run3/4”coppertubingfromthecirculatingpumptothelowerlegofthewater
coil.Thisiswheretheoptionalgatevalve(5)canbeinstalledtoregulateow.
E. Installa3/4in.teeanda150lb.Pressurereliefvalve(7)inthetoplegwithintwofeetofthecoil.
F. Completethe3/4in.linebyrunningitbacktotheteeatthetopofthewaterheatertank.Besuretoinstallthe3/4in.
ventelbowandautomaticairvent(2)atthehighpointoftheline.Theoptionalaquastatcanbeinstalledinthisline,a
maximumof6feetfromthefurnace.Thisaquastatmustcloseonriseintemperatureandmustbehookeduptoturnon
thecirculatorwhenthewatertemperaturereaches120°f.
G.Aftersecuringallconnections,rellthetankwithwaterandthen,ONLYTHEN,turnonthepowertothewaterheater.

3-90-70744R13_11/13
Service Parts SF1500A
Beginning Manufacturing Date: N/A
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor.Hearth and Home Technologies does not sell directly to consumers.Provide
modelnumberandserialnumberwhenrequestingservicepartsfromyourdealerordistributor.
Stocked
at Depot
ITEM DESCRIPTION COMMENTS PART NUMBER
1 LoadDoor-Cast 4-00-00197P Y
DoorLatch 4Sets 1-00-00036 Y
Gasket,1/2”Rope(LoadDoor&AshDoor) 20Ft 1-00-53500 Y
2 DoorHandle-Cast(notasshowninpicture) Qty2req 4-00-00042 Y
3 LongShakerHandleWeldment 1-10-01005 Y
ShakerBarWeldment5-3/16” 1-10-00668W Y
ShakerBlock 2-00-01037-1 Y
ShakerBracket 2-00-04129F
4 ShakerHandleMount 2-00-01037-2 Y
5 AshDoor-Cast 4-00-00200-1D
AshPan 1-10-16027 Y
6 AutomaticDraftControlAssembly 1-10-03375 Y
DraftControlMotorMountBracket 2-00-01010B
DraftMotor,120v 3-20-45338 Y
7 DraftControl-Cast Qty2req 4-00-00109-1
Additionalservicepartsonthefollowingpage. 8/13
Wood/Coal Hot Air Furnace
1-70-03232
5
2
6
4
7
1
3

3-90-70744R13_11/13
Service Parts SF1500A
Beginning Manufacturing Date: N/A
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor.Hearth and Home Technologies does not sell directly to consumers.Provide
modelnumberandserialnumberwhenrequestingservicepartsfromyourdealerordistributor.
Stocked
at Depot
ITEM DESCRIPTION COMMENTS PART NUMBER
ADCCover 2-00-01012P
ADCHinge 3-31-01004
BlowerAssembly1000cfm 1-10-01006 Y
ReplacementMotor(1000cfmblower) 3-20-36648 Y
BlowerBrackets 3-21-22335
Brick9”X4-1/2”x1-1/4”(8needed) Pkgof7 1-00-900450125 Y
SetofCutBrick 1-00-00839 Y
Brick,UsedwithReducer,9”x41/2”x21/2” 3-40-900450250
Brick,Fullskid 414Pcs 3-40-900450-414
Disconnects,Female Pkgof25 1-00-00959 Y
DoorPins,3/8x17/8 Qty4req 4-30-00138B
FanLimit 3-20-23139 Y
FilterBox 1-10-3291
AirFilter-Furnace14x20x1 Pkgof12 3-40-14201-12
FilterBoxMountingBrackets Qty4req 2-00-01003
FlexConduit 7Ft 1-00-25043 Y
FurnaceKit 1-00-01007-1
GasketGlue,32oz 3-42-4583
GrateHolder2-cast Qty4req 3-00-00193 Y
GrateLink4Hole-cast 4-00-00205D Y
Grate13in-Cast(4needed) 3-00-00207 Y
HotWaterCoilHardware 3-10-49000
JacketSidew/oShakerHole 2-00-04130-15S
JacketSidew/ShakerHole 2-00-00304-15S
JacketTop 2-00-08117-15S
Relay-LowVoltage 3-20-43393 Y
SpringHandles Pkgof3 3-40-00086-3-3
SteelBox,4x4 3-20-52171
StraightHotWaterCoil 3-10-49201
CoilHolePlate Qty4req 2-00-04123L
Thermostat-LowVoltage 3-20-12080 Y
ToggleSwitch,3Speed 3-20-70020 Y
TouchupPaint,Aerosol 3-42-7737

3-90-70744R13_11/13
Service Parts SF2500A
Beginning Manufacturing Date: N/A
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor.Hearth and Home Technologies does not sell directly to consumers.Provide
modelnumberandserialnumberwhenrequestingservicepartsfromyourdealerordistributor.
Stocked
at Depot
ITEM DESCRIPTION COMMENTS PART NUMBER
1 LoadDoor-Cast 4-00-00197P Y
DoorLatch 4Sets 1-00-00036 Y
FlapperWeldment18-3/8” 1-10-00674W
2 DoorHandle-Cast(notasshowninpicture) Qty2req 4-00-00042 Y
3 LongShakerHandleWeldment 1-10-01005 Y
4 ShakerHandleMount 2-00-01037-2 Y
ShakerBarWeldment 1-10-02016W Y
ShakerBlock 2-00-01037-1 Y
ShakerBracket 2-00-01047F
5 AshDoor-Cast 4-00-00200-1D
AshPan 1-10-25027 Y
6 AutomaticDraftControlAssembly 1-10-03375 Y
DraftControlMotorMountBracket 2-00-01010B
DraftMotor,120v 3-20-45338 Y
7 DraftControl-Cast 4-00-00109-1
Additionalservicepartsonfollowingpage 8/13
5
2
6
4
7
1
3
Wood/Coal Hot Air Furnace
1-70-03235

3-90-70744R13_11/13
Service Parts SF2500A
Beginning Manufacturing Date: N/A
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor.Hearth and Home Technologies does not sell directly to consumers.Provide
modelnumberandserialnumberwhenrequestingservicepartsfromyourdealerordistributor.
Stocked
at Depot
ITEM DESCRIPTION COMMENTS PART NUMBER
ADCCover 2-00-01012P
ADCHinge 3-31-01004
BlowerAssembly1000cfm 1-10-01006 Y
ReplacementMotor(1000cfmblower) 3-20-36648 Y
BlowerLegSet 3-21-22335
Brick9”X4-1/2”x1-1/4”(10needed) Setof7 1-00-900450125 Y
SetofCutBrick 1-00-00841 Y
Brick,9”x4-1/2”x2-1/2”(forusewithReducer) 3-40-900450250
Brick,FullSkid 414Pcs 3-40-900450-414
Disconnect,Female Pkgof25 1-00-00959 Y
DoorPins,3/8x1-7/8 4-30-00138B
FanLimit 3-20-23139 Y
FilterBox-Furnace 1-10-3291
AirFilter-Furnace14x20x1 Pkgof12 3-40-14201-12
FlapperHook Qty2req 2-00-01005B Y
FlexConduit 7Ft 1-00-25043 Y
FurnaceFilterBoxClip Qty4req 2-00-01003
FurnaceKit 1-00-01007-1
Gasket1/2”Rope(LoadDoor-AshDoor) 20FT 1-00-53500 Y
GasketGlue,32oz 3-42-4583
Grate13in-Cast(5needed) 3-00-00207 Y
GrateHolder2-Cast Qty2req 3-00-00193 Y
GrateHolder3-Cast Qty2req 3-00-00194 Y
GrateLink5-Cast 3-00-00205 Y
HotwaterCoilHardware 3-10-49000
Jacketsidew/oShakerHole 2-00-07004-15S
JacketSidew/ShakerHole 2-00-00402-15S
JacketTop 2-00-08130-15S
Relay-LowVoltage 3-20-43393 Y
SpringHandle Pkgof3 3-40-00086-3-3
SteelBox,4x4 3-20-52171
StraightHotWaterCoil 3-10-49201
CoilHolePlates Qty4req 2-00-04123L
Thermostat-LowVoltage 3-20-12080 Y
ToggleSwitch,3Speed 3-20-70020 Y
Touch-upPaint,Aerosol Qty4req 3-42-7737

19
3-90-70744R13_11/13
Warranty
4021-645F02-18-13 Page1of2
Hearth & Home Technologies
LIMITED LIFETIME WARRANTY
Hearth&HomeTechnologies,onbehalfofitshearthbrands(”HHT”),extendsthefollowingwarrantyforHHT
gas,wood,pellet,coalandelectrichearthappliancesthatarepurchasedfromanHHTauthorizeddealer.
WARRANTY COVERAGE:
HHTwarrantstotheoriginalowneroftheHHTapplianceatthesiteofinstallation,andtoanytransfereetakingownership
oftheapplianceatthesiteofinstallationwithintwoyearsfollowingthedateoforiginalpurchase,thattheHHTappliance
willbefreefromdefectsinmaterialsandworkmanshipatthetimeofmanufacture.Afterinstallation,ifcoveredcompo-
nentsmanufacturedbyHHTarefoundtobedefectiveinmaterialsorworkmanshipduringtheapplicablewarrantyperiod,
HHTwill,atitsoption,repairorreplacethecoveredcomponents.HHT,atitsowndiscretion,mayfullydischargeallofits
obligationsundersuchwarrantiesbyreplacingtheproductitselforrefundingtheverifiedpurchasepriceoftheproduct
itself.Themaximumamountrecoverableunderthiswarrantyislimitedtothepurchasepriceoftheproduct.Thiswarranty
issubjecttoconditions,exclusionsandlimitationsasdescribedbelow.
WARRANTY PERIOD:
Warrantycoveragebeginsonthedateoforiginalpurchase.Inthecaseofnewhomeconstruction,warrantycoverage
beginsonthedateoffirstoccupancyofthedwellingorsixmonthsafterthesaleoftheproductbyanindependent,
authorizedHHTdealer/distributor,whicheveroccursearlier.Thewarrantyshallcommencenolaterthan24months
followingthedateofproductshipmentfromHHT,regardlessoftheinstallationoroccupancydate.Thewarrantyperiodfor
partsandlaborforcoveredcomponentsisproducedinthefollowingtable.
Theterm“LimitedLifetime”inthetablebelowisdefinedas:20yearsfromthebeginningdateofwarrantycoveragefor
gasappliances,and10yearsfromthebeginningdateofwarrantycoverageforwood,pellet,andcoalappliances.These
timeperiodsreflecttheminimumexpectedusefullivesofthedesignatedcomponentsundernormaloperatingconditions.
Seeconditions,exclusions,andlimitationsonnextpage.
Parts Labor Gas Wood Pellet EPA
Wood
Coal Electric Venting
XXXXXXX
Allpartsandmaterialexceptas
coveredbyConditions,
Exclusions,andLimitations
listed
XXX
Igniters,electroniccomponents,
andglass
X X X X X Factory-installedblowers
X Moldedrefractorypanels
X Firepotsandburnpots
5years 1year X X Castingsandbaffles
7years 3years X X X Manifoldtubes,
HHTchimneyandtermination
10
years
1year X Burners,logsandrefractory
Limited
Lifetime
3years X X X X X Fireboxandheatexchanger
XXXXXXX Allreplacementparts
beyondwarrantyperiod
WarrantyPeriod HHTManufacturedAppliancesandVenting
1Year
ComponentsCovered
3years
2years
90Days

20
3-90-70744R13_11/13
Warranty
4021-645F02-18-13
Page2of2
WARRANTY CONDITIONS:
• ThiswarrantyonlycoversHHTappliancesthatarepurchasedthroughanHHTauthorizeddealerordistributor.Alistof
HHTauthorizeddealersisavailableontheHHTbrandedwebsites.
• ThiswarrantyisonlyvalidwhiletheHHTapplianceremainsatthesiteoforiginalinstallation.
•ThiswarrantyisonlyvalidinthecountryinwhichtheHHTauthorizeddealerordistributorthatsoldtheappliance
resides.
• Contactyourinstallingdealerforwarrantyservice.Iftheinstallingdealerisunabletoprovidenecessaryparts,contact
thenearestHHTauthorizeddealerorsupplier.Additionalservicefeesmayapplyifyouareseekingwarrantyservice
fromadealerotherthanthedealerfromwhomyouoriginallypurchasedtheproduct.
• Checkwithyourdealerinadvanceforanycoststoyouwhenarrangingawarrantycall.Travelandshippingcharges
forpartsarenotcoveredbythiswarranty.
This warranty is void if:
• Theappliancehasbeenover-firedoroperatedinatmospherescontaminatedbychlorine,fluorine,orotherdamaging
chemicals.Over-firingcanbeidentifiedby,butnotlimitedto,warpedplatesortubes,rustcoloredcastiron,bubbling,
crackinganddiscolorationofsteelorenamelfinishes.
• Theapplianceissubjectedtoprolongedperiodsofdampnessorcondensation.
• Thereisanydamagetotheapplianceorothercomponentsduetowaterorweatherdamagewhichistheresultof,but
notlimitedto,improperchimneyorventinginstallation.
LIMITATIONS OF LIABILITY:
• Theowner’sexclusiveremedyandHHT’ssoleobligationunderthiswarranty,underanyotherwarranty,expressor
implied,orincontract,tortorotherwise,shallbelimitedtoreplacement,repair,orrefund,asspecifiedabove.Inno
eventwillHHTbeliableforanyincidentalorconsequentialdamagescausedbydefectsintheappliance.Somestates
donotallowexclusionsorlimitationofincidentalorconsequentialdamages,sotheselimitationsmaynotapplytoyou.
Thiswarrantygivesyouspecificrights;youmayalsohaveotherrights,whichvaryfromstatetostate.EXCEPTTO
THEEXTENTPROVIDEDBYLAW,HHTMAKESNOEXPRESSWARRANTIESOTHERTHANTHEWARRANTY
SPECIFIEDHEREIN.THEDURATIONOFANYIMPLIEDWARRANTYISLIMITEDTODURATIONOFTHE
EXPRESSEDWARRANTYSPECIFIEDABOVE.
WARRANTY EXCLUSIONS:
Thiswarrantydoesnotcoverthefollowing:
• Changesinsurfacefinishesasaresultofnormaluse.Asaheatingappliance,somechangesincolorofinteriorand
exteriorsurfacefinishesmayoccur.Thisisnotaflawandisnotcoveredunderwarranty.
• Damagetoprinted,plated,orenameledsurfacescausedbyfingerprints,accidents,misuse,scratches,melteditems,
orotherexternalsourcesandresiduesleftontheplatedsurfacesfromtheuseofabrasivecleanersorpolishes.
• Repairorreplacementofpartsthataresubjecttonormalwearandtearduringthewarrantyperiod.Theseparts
include:paint,wood,pelletandcoalgaskets,firebricks,grates,flameguides,batteriesandthediscolorationofglass.
• Minorexpansion,contraction,ormovementofcertainpartscausingnoise.Theseconditionsarenormalandcom-
plaintsrelatedtothisnoisearenotcoveredbythiswarranty.
• Damagesresultingfrom:(1)failuretoinstall,operate,ormaintaintheapplianceinaccordancewiththeinstallation
instructions,operatinginstructions,andlistingagentidentificationlabelfurnishedwiththeappliance;(2)failureto
installtheapplianceinaccordancewithlocalbuildingcodes;(3)shippingorimproperhandling;(4)improperopera-
tion,abuse,misuse,continuedoperationwithdamaged,corrodedorfailedcomponents,accident,orimproperly/
incorrectlyperformedrepairs;(5)environmentalconditions,inadequateventilation,negativepressure,ordrafting
causedbytightlysealedconstructions,insufficientmake-upairsupply,orhandlingdevicessuchasexhaustfansor
forcedairfurnacesorothersuchcauses;(6)useoffuelsotherthanthosespecifiedintheoperatinginstructions;(7)
installationoruseofcomponentsnotsuppliedwiththeapplianceoranyothercomponentsnotexpresslyauthorized
andapprovedbyHHT;(8)modificationoftheappliancenotexpresslyauthorizedandapprovedbyHHTinwriting;
and/or(9)interruptionsorfluctuationsofelectricalpowersupplytotheappliance.
• Non-HHTventingcomponents,hearthcomponentsorotheraccessoriesusedinconjunctionwiththeappliance.
• Anypartofapre-existingfireplacesysteminwhichaninsertoradecorativegasapplianceisinstalled.
• HHT’sobligationunderthiswarrantydoesnotextendtotheappliance’scapabilitytoheatthedesiredspace.Informa-
tionisprovidedtoassisttheconsumerandthedealerinselectingtheproperappliancefortheapplication.Consider-
ationmustbegiventoappliancelocationandconfiguration,environmentalconditions,insulationandairtightnessof
thestructure.