Harman Accentra 52i Pellet Insert User manual

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1513-90-00574i
Installation Manual
Installation and Appliance Setup
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
Please read this entire manual before
installation and use of this pellet fuel-
burning room heater.
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.
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.
Testedandapprovedforwoodpelletsonly.Burningof
anyothertypeoffuelvoidsyourwarranty.
Hot glass will cause burns.
• Donottouchglassuntilitiscooled
• NEVERallowchildrentotouchglass
• Keepchildrenaway
• CAREFULLYSUPERVISEchildreninsameroomas
stove.
• Alertchildrenandadultstohazardsofhightemperatures.
High temperatures may ignite clothing or other
ammable materials.
• Keepclothing,furniture,draperiesandotherammable
materialsaway.
HOT SURFACES!
Glassandothersurfacesarehotduring
operationandcooldown.
To obtain a French translation of this manual, please
contactyourdealerorvisitwww.harmanstoves.com
Pourobtenirunetraductionfrançaisedecemanuel,s’il
vous plaît contacter votre revendeur ou visitez www.
harmanstoves.com
NOTE
WARNING
WARNING
Model(s):
Accentra 52i Pellet Insert
NOTICE: SAVE THESE INSTRUCTIONS
CAUTION
!
CAUTION
!

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1523-90-00574i
= Contains updated information
TABLE OF CONTENTS
Safety Alert Key:
• DANGER! Indicatesahazardoussituationwhich,ifnotavoidedwillresultindeathorseriousinjury.
• WARNING!Indicatesahazardoussituationwhich,ifnotavoidedcouldresultindeathorseriousinjury.
• CAUTION! Indicatesahazardoussituationwhich,ifnotavoided,couldresultinminorormoderateinjury.
• NOTICE:Indicatespracticeswhichmaycausedamagetothestoveortoproperty.
InstallationStandardWorkChecklist....................3
1 Product Specic and Important Safety Information
A. ApplianceCertication............................4
B. GlassSpecications..............................4
C. MobileHomeApproved...........................4
D. BTU&EfciencySpecications.....................4
E. Non-CombustibleMaterialsSpecication..............5
F. CombustibleMaterialsSpecication ................. 5
G.ElectricalCodes.................................5
2 Getting Started
A. DesignandInstallationConsiderations...............6
B. ToolsandSuppliesNeeded........................ 7
C. InspectApplianceandComponents..................7
3 Clearances
A. ApplianceDimensionDiagram......................8
B. ClearancestoCombustibles&FloorProtection.........9
4 Termination Location and Vent Information
A. VentTerminationDesign .......................10-13
B. Venting&UseofElbows.........................14
C. BatteryBack-upPower...........................15
D. OutsideAir....................................16
E. LocatingYourApplianceandChimney...............16
F. Draft.........................................16
G.NegativePressure..............................17
H. AvoidingSmoke&Odors.......................17-18
I. MobileHomeInstallation.........................19
J. FireSafety....................................20
K. InspectAppliance&Components ..................20
5 Appliance Setup
A. ReducingWeightforInstallation..................21-22
B. BeginningtheInstallation.......................22-23
C. ElectricalConnectionInstallation.................24-25
D. Reminders....................................26
E. LowDraftVoltageAdjustments .................... 27
6 Reference Materials
A. SafetyReminders...............................28
B. WiringDiagram.................................29
!


Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1533-90-00574i
Installation Standard Work Checklist
ATTENTION INSTALLER:
Follow this Standard Work Checklist
Thisstandardworkchecklististobeusedbytheinstallerinconjunctionwith,notinsteadof,theinstructionscontainedin
thisinstallationmanual.
Customer: ________________________________ Date Installed: __________________________
Lot/Address: ________________________________ Location of Fireplace: __________________________
________________________________ Installer: __________________________
Dealer/Distributer Ph #__________________________
Serial Number: __________________________
!
WARNING! Risk of Fire or Explosion! Failure to install appliance to these instructions can lead
to a re or explosion.
Appliance Install YES IF NO, WHY?
Requirednon-combustibleboardisinstalled. (Pg.4)    ________________________________
Veriedclearancestocombustible.  (Pg.10-14)   ________________________________
UnitisLeveledandsecured.       ________________________________
Venting/Chimney Section 4 (Pg. 10-19)
VentingCongurationcompliestoventdiagrams.    ________________________________
Ventinginstalled,sealedandsecuredinplacewithproperclearances.  ________________________________
Exteriorwall/roofashinginstalledandsealed.     ________________________________
Terminationsinstalledandsealed.      ________________________________
Electrical Section 1 (Pg. 4)
120VACunswitchedpowerprovidedtotheappliance.    ________________________________
Finishing Sections 3 & 4 (Pg. 8-14)
Combustiblematerialsnotinstalledinnon-combustibleareas.   ________________________________
Veriedallclearancesmeetinstallationmanualrequirements.   ________________________________
Appliance Setup Section 5 (Pg. 20-21)
Allpackagingandprotectivematerialsareremoved.    ________________________________
Accessoriesinstalledproperly.       ________________________________
Manualbagandallitscontentsareremovedfrominsidetheappliance
 andgiventopartyresponsibleforuseandoperation.   ________________________________
Startedapplianceandveriedthatallmotorsandblowersoperate
 astheyshould.        ________________________________
HearthandHomeTechnologiesrecommendsthefollowing:
Photographingtheinstallationandcopyingthischecklistforyourle.
Thischecklistremainsvisibleatalltimesontheapplianceuntiltheinstallationiscomplete.
Comments:Furtherdescriptionoftheissues,whoisresponsible(Installer/Builder/OtherTrades,etc.)andcorrectiveaction
needed__________________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
Commentscommunicatedtopartyresponsible____________________by________________________on__________
     (Builder/GenContractor)  (Installer)  (Date)

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1543-90-00574i
A. Appliance Certication
B. Glass Specications
This appliance is equipped with 5mm ceramic glass.
Replaceglassonlywith5mmceramicglass.Pleasecontact
yourdealerforreplacementglass.
C. Mobile Home Approved
This appliance is approved for mobile home installations
whennotinstalledinasleepingroomandwhenanoutside
combustionairinletisprovided.
Thestructuralintegrityofthemobilehomeoor,ceiling,and
wallsmustbemaintained.Theappliancemustbeproperly
groundedtotheframeofthemobilehomeusingaminimum
of8AWGcoppersolidorstranded,insulatedorbarewire
or equivalent. and use only listed pellet vent, Class “PL”
connectorpipe.
A Harman® OutsideAir Kit must be installed in a mobile
homeinstallation.
NOTE: Thisinstallationmustconformwithlocalcodes.
Intheabsenceoflocalcodesyoumustcomplywiththe
ASTME1509-12,ULC-S628-93& (UM) 84-HUD
MODEL: Accentra52iPelletInsert
LABORATORY: OMNITestLaboratories,Inc
REPORT NO. 135-S-31-2
TYPE: PelletFueledInsert/Supplementary
ForResidentialUse
STANDARD(s): ASTME1509-12,ULC-S628-93,EPA
Method28&5G
D. BTU & Efciency Specications
1 Product Specic and Important Safety Information
The Accentra 52i Pellet Insert is Certied
to comply with 2015 particulate emission
standards.Not approved for sale afterMay
15,2020.
THE STRUCTURAL INTEGRITY OF THE
MANUFACTURED HOME FLOOR, WALL, AND
CEILING/ROOF MUST BE MAINTAINED.
CAUTION
!
DO NOT INSTALL IN SLEEPING ROOM.
WARNING
!
* Weighted average LHV efciency using data collected
during EPA emissions test.
**Weighted average HHV efciency using data collected
during EPA emissions test.
***A range of BTU outputs based on EPA Default Efciency
and the burn rates from the low and high EPA tests.
****Based on the maximum feed rate per hour multiplied by
approximately 8,600 BTU’s which is the average BTU’s from
a pound of pellets.
EPA Certication Number: 993-15
EPA Certied Emissions: 1.5g/hr
*LHV Tested Efciency: 81.7%
**HHV Tested Efciency: 75.6%
***EPA BTU Output: 10,300-39,800
****BTU Input 13,800-53,000
Vent Size: 3Inch
Hopper Capacity: 64.5lbs
Fuel WoodPellet

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1553-90-00574i
E. Non-Combustible Materials Specication
Materialwhichwillnotigniteandburn.Suchmaterialsare
thoseconsistingentirelyofsteel,iron,brick,tile,concrete,
slate,glassorplasters,oranycombinationthereof.
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in
a Vertical Tube Furnace at 750º C and UL763 shall be
considerednon-combustiblematerials.
F. Combustible Materials Specication
Materials made of or surfaced with wood, compressed
paper,plantbers,plastics,orothermaterialthatcanignite
and burn, whether ame proofed or not, or plastered or
unplasteredshallbeconsideredcombustiblematerials.
G. Electrical Codes
120VAC,60Hz,Start5.0Amps,Run4.0Amps
NOTE: Some generator or battery back-up systems may
not be compatible with the micro-processor electronics
on this appliance. Please consult the power supply
manufacturer for compatible systems.
WARNING! Risk of Fire! Hearth & Home Technologies
disclaims any responsibility for, and the warranty and agency
listing will be voided by the below actions.
DO NOT:
• Install or operate damaged appliance
• Modify appliance
• Install other than as instructed by Hearth & Home
Technologies
• Operate the appliance without fully assembling all
components
• Overre
• Install any component not approved by Hearth & Home
Technologies
• Install parts or components not Listed or approved.
• Disable safety switches
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage.
For assistance or additional information, consult a qualied
installer, service agency or your dealer.
NOTE: Hearth & Home Technologies, manufacturer of
thisappliance,reservestherighttoalteritsproducts,their
specicationsand/orpricewithoutnotice.
Harman® is a registered trademark of Hearth & Home
Technologies.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1563-90-00574i
A . Design and Installation Considerations
1. Appliance Location
NOTICE: Check building codes prior to installation.
• InstallationMUSTcomplywithlocal,regional,stateand
nationalcodesandregulations.
• Consult insurance carrier, local building inspector, re
ofcialsorauthoritieshavingjurisdictionoverrestrictions,
installationinspectionandpermits.
Itisagoodideatoplanyourinstallationonpaper,usingexact
measurementsfor clearances andoor protection, before
actuallybeginningtheinstallation
Considerationmustbegivento:
• Safety,convenience,trafcow
• Placementofthechimneyandchimneyconnector.
• If you are not using an existing chimney, place the
appliance where there will be a clear passage for a
factory-builtlistedchimneythroughtheceilingandroof.
• Installing an optional outside air kit would affect the
locationoftheventtermination.
Suitable replaces for installation:
• MasonryFireplace
• ExistingFactoryBuiltWoodBurningFireplace
• Harman®ZeroClearanceCabinet-Part#1-00-574323
EXCEPTION:Masonryorsteel,includingthedamperplate,
mayberemovedfromthesmokeshelfandadjacentdamper
frameifnecessarytoaccommodateachimneyliner,
Marginal Location:
• Below peak
Location NOT recommended:
• Not the highest point of the roof
• Wind loading possible
Multi-level Roofs
Windward
Leeward
Recommended:
Outside Air Intake
on windward side
NOT recommended:
Outside Air Intake
on leeward side
Recommended Location:
• Above peak
Recommended:
• Insulated exterior chase
in cooler climates
Recommended Location:
• Above peak
• Inside heated space
Location NOT recommended:
• Too close to tree
• Below adjacent structure
• Lower roof line
• Avoid outside wall
Marginal Location:
• Wind loading possible
Figure 2.1
2 Getting Started
providedthattheirremovalwillnotweakenthestructureof
the replace and chimney, and will not reduce protection
forcombustiblematerialstolessthanthatrequiredbythe
NationalBuildingCode.
Sincepelletexhaustcancontainash,sootorsparks,you
mustconsiderthelocationof:
• Windows
• AirIntakes
• Air Conditioner
• Overhangs,softs,porchroofs,adjacentwalls
• Landscaping,vegetation
When locating vent and venting termination, vent above
rooflinewhenpossible.
Warning! Risk of Fire Damaged parts could impair safe
operation. Do NOT install damaged, incomplete or substitute
components.
NOTICE: Locating the appliance in a location of considerable
air movement can cause intermittent smoke spillage from
appliance. Do not locate appliance near:
• Frequently open doors
• Central heat outlets or returns
Installation and service of this
appliance should be performed by
qualiedpersonnel.Hearth&Home
Technologies recommends HHT
Factory Trained or NFI Certied
professionals.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1573-90-00574i
ReciprocatingSaw
Hammer
PhillipsScrewdriver
TapeMeasure
Level
Non-CombustibleSealant
Material
Gloves
SafetyGlasses
ElectricDrill&Bits
Mayalsoneed:
VentSupportStraps
VentingPaint
Tools and building supplies normally required
for installation, unless installing into an existing
masonry replace:
B. Tools And Supplies Needed
C. Inspect Appliance and Components
•  Carefullyremovetheapplianceandcomponentsfromthe
packaging.
•  Theventsystemcomponentsanddecorativedoorsand
frontsmaybeshippedinseparatepackages.
•  Ifoptionallogsetispurchased,thelogbracketmustbe
installedpriortoinstallingthelogset.
•  Reporttoyourdealeranypartsdamagedinshipment,
particularlytheconditionoftheglass.
• Read all of the instructions before starting the
installation. Follow these instructions carefully during
the installation to ensure maximum safety and benet.
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged,
incomplete or substitute components. Keep appliance dry.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualied service technician to inspect the
appliance and to replace any part of the control system
that has been under water.
Hearth&HomeTechnologiesdisclaimsanyresponsibility
for, and the warranty will be voided by, the following
actions:
•  Installationanduseofanydamagedapplianceorvent
systemcomponent.
•  Modicationoftheapplianceorventsystem.
•  InstallationotherthanasinstructedbyHearth&Home
Technologies.
•  Installation and/or use of any component part not
approvedbyHearth&HomeTechnologies.
Any such action may cause a re hazard.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1583-90-00574i
3 Clearances
A. Appliance Dimension Diagram
Dimensionsareactualappliancedimensions.Useforreferenceonly.
Figure 3.1
32-1/8”
41-13/16”
31-5/16”
22"
20"
24"
18-9/16”
29-15/16”
13/16”
15-9/16” 14-3/8”
12-3/4”
Unit #1-90-574240 Hopper Capacity 64.5 lbs.- 29.25 kg
Unit #1-90-574220 Hopper Capacity 58 lbs.-26 kg Unit #1-90-574200 Hopper Capacity 47.5 lbs.- 21.5 kg
To Top Edge
10-1/2”
To Glass
27-5/8”
14-3/8”
24-7/8”

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1593-90-00574i
Whenselectingalocationfortheapplianceitisimportantto
considertherequiredclearancestowalls(seeFigure3.2).
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access. Due
to high temperatures, the appliance should be located out of
trafc and away from furniture and draperies.
NOTICE: Illustrations reect typical installations and are FOR
DESIGN PURPOSES ONLY. Illustrations/diagrams are not
drawn to scale. Actual installation may vary due to individual
design preference.
A=tosidewall
B=to12"mantel
C=to3/4"trim
D=to3/4"trim
E=oorprotection
*Floorprotectionmustbeusedfromhearthopeningto6"(152mm)infrontofdoorglassand6"(152mm)toeach
sideofthestovebodyOR8”(203mm)tosidesand18”(457mm)infront(CANADA)toprotectcombustibles
fromhotashes.Aminimumsizewillbe16.5"deepby30"wideandbemadeofanon-combustiblematerial
ormeetULapproval.
Figure 3.2
12” (305mm) Mantel
B
A
EE
C
D
CLEARANCES: A B *C *D E (From Glass)
From Insert Body: 12” (305mm) 12” (305 mm) 0” 0” 6” (152 mm)
*3/4” trim, zero clearance to cast surround 18” 457mm (Canada)
B. Clearances to Combustibles & Floor Protection

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1510 3-90-00574i
4 Termination Location and Vent Information
A. Venting Termination Design #1 Installing into an existing replace chimney
Thismethodprovidesexcellentventingwith100%outsideair
whichisthemostefcientoperationofthisunit.Thismethod
alsoprovidesnaturaldraftintheeventofapowerfailure.
A4”stainlesssteelexpipeisneededfortheuepipe,and3"
aluminumorStainlessSteelFlexPipeisusedfortheintake.
CHIMNEY CONNECTOR PIPE MAY NOT PASS
THROUGH CONCEALED SPACES INCLUDING AN
ATTIC, ROOF SPACE, CLOSET, FLOOR OR CEILING.
Heightofexistinghearth
#2 Installing into an existing replace chimney
Thismethodprovidesexcellentventingfornormaloperation.
This method also provides natural draft in the event of a
powerfailure.
Acapshouldbeinstalledonthechimneytokeepoutrain.
Combustionairisprovidedfromthelivingareaandentersthe
feedsystemfromaroundthewingandstovebodyspaces.
Thechimneytopmustbecapped
topreventrainand/orsnowfrom
enteringthechimney.
See Page 13 Figure 4.8, for
information on the optional
Harman®Adjustable Stainless
SteelIntakeExtension.
The damper area must be
sealed with a steel plate and it
is recommended that Kaowool,
Mineral wool or an equivalent
non combustible insulation is
usedontopoftheplatetoreduce
the possibility of condensation.
Insulation alone should not be
usedtosealthedamperopening.
Thechimneytopmustbecapped
topreventrainand/orsnowfrom
enteringthechimney.
The damper area must be
sealed with a steel plate and it
is recommended that Kaowool,
Mineral wool or an equivalent
non combustible insulation is
usedontopoftheplatetoreduce
the possibility of condensation.
Insulation alone should not be
usedtosealthedamperopening.
Figure 4.1
Figure 4.2
DO NOT REMOVE BRICKS OR MORTAR FROM THE
EXISTING FIREPLACE.
DO NOT REMOVE BRICKS OR MORTAR FROM THE
EXISTING FIREPLACE.
WARNING
!
WARNING
!
WARNING
!

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1511 3-90-00574i
36”
12” min.
#3 Installing into an existing chimney
Thismethodprovidesexcellentventingfornormaloperation.
This method also provides natural draft in the event of a
powerfailure.Ifthechimneyconditionisquestionableyou
maywanttoinstallalinerasinmethod#2.
This is the minimum allowed vent pipe using 4" stainless
steelexpipe.
Theventpipemustextendpastthedampersealingareaby
atleast12inches.
Note:Theinsulationmaterialmustnotbeallowedtoexpand
tothepointthatitcoverstheendoftheexpipe.
Thechimneyshouldbecappedwithanystylecapthatwill
notallowrainorsnowtoenter.
InsomeplacesintheUSandCanada,itisrequiredthatthe
ventpipeextendallthewaytothetopofthechimney.Check
yourlocalcodes.
Thechimneytopmustbecapped
topreventrainand/orsnowfrom
enteringthechimney.
The damper area must be
sealed with a steel plate and it
is recommended that Kaowool,
Mineral wool or an equivalent
non combustible insulation is
usedontopoftheplatetoreduce
the possibility of condensation.
Insulation alone should not be
usedtosealthedamperopening.
#4 Preferred method
Thismethodprovidesexcellentventingfornormaloperation
andinareplacewithinadequateuespace,oraheightof
over30feet.A3"or4"PLventpipeshouldbeusedwiththe
neededswiveluestub.
NOTE:Witha100%outsideairkittheoutsideaircanbe
installedinthesamemannerastheuepipe.
KEEP COMBUSTIBLES (SUCH AS GRASS, LEAVES,
ETC.) AT LEAST 3 FEET AWAY FROM THE FLUE
OUTLET ON THE OUTSIDE OF THE BUILDING.
Stainless Steel Outside Air Inlet Cover
part# 1-10-09542
12"min.
Chimneytop
MUST BE SEALED
Fiberglassinsulation
packed above the
damperopeningand
sealedplate.(Nota
Harman®product.)
CHIMNEY CONNECTOR PIPE MAY NOT PASS
THROUGH CONCEALED SPACES INCLUDING AN
ATTIC, ROOF SPACE, CLOSET, FLOOR OR CEILING.
Figure 4.3
Figure 4.4
DO NOT REMOVE BRICKS OR MORTAR FROM THE
EXISTING FIREPLACES.
WARNING
!
WARNING
!
CAUTION
!

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1512 3-90-00574i
Installing the Accentra 52i Pellet Insert into an
existing factory built wood burning replace
WheninstallingtheAccentra52iPelletInsertintoafactory
built wood burning replace, the Manufactured Fireplace
Installation Kit #1-00-574205 must be used. In addition,
severalthingsneedtobetakenintoconsideration.
The size of the replace opening. Will the unit t into the
opening? Many of these units have metal smoke shields
insidethetopthatcanberemovedtogainheight.Oftenthe
sideandrearrefractorycanberemovedtogaindepthand
width.Insomecircumstances,thefrontlowerliporgrillwork
mayalsoberemoved.Besureandfollowtheguidelinesin
thekitinstructions.Floorprotectionguidelines,aslistedon
page8,Figure3.2mustalsobefollowed.
Thefactorybuiltchimneymust belistedperUL127(US)
andmeettype HTrequirementsof UL103(US). Factory
BuiltreplacechimneystestedtoUL127-98maybe,atthe
replacemanufacturersoption,testedtothesamecriteria
asUL103HTrequirements.Ifthechimneyisnotlistedas
meetingHTrequirements,orifthefactorybuiltreplacewas
testedpriorto1998,afullheightlistedchimneylinermustbe
installedfromtheapplianceuecollartothechimneytop.
Liner must meet high temperature (2100° F) per UL1777
(US).Thelinermustbesecurelyattachedtoboththeue
collarandthechimneycap.Topreventroomairpassageto
thechimney cavity of thereplace, seal the damperarea
aroundthechimneylinerwithberglassbatting.
Note: If the Harman® Accentra 52i Pellet Insert is installed into a factory built wood burning replace, this label
(Harman® part #3-90-674204) MUST be attached to the altered replace. This label is included in the Manufactured
replace installation kit.
THIS FIREPLACE HAS BEEN ALTERED TO ACCOMMODATE A
FIREPLACEINSERTANDSHOULDBEINSPECTEDBYAQUALIFIED
PERSONPRIORTOREUSEASACONVENTIONALFIREPLACE
Figure 4.5
OPTIONAL HOPPER CONFIGURATIONS FOR SMALLER FIREPLACE
OPENINGS:
TheHarman®Accentra52iPelletInsertcanbefactorybuiltwithshorter
hoppercongurations.
Thestandardrequiresa24"opening.Part#1-90-574240
Option1:Requiresa22"openingheight.Part#1-90-574220
Option2:Requiresa20"openingheight.Part#1-90-574200
Keepinmindthehoppercapacitieswilldecreasewiththeoptionalheights.
22"
20"
24"
IN CANADA: This replace insert must be installed with a continuous
chimney liner of a minimum 3" diameter extending from the insert to
thetopofthechimney.ThechimneylinermustconformtotheClass3
requirementsofCAN/ULC-S635,StandardforLiningSystemsforExisting
Masonry or Factory Built Chimneys and Vents, or CAN/ULC-S640,
StandardforLiningSystemsforNewMasonryChimneys.
Additionally, the rebox oor of the ZC Wood or Gas Fireplace may be removed down to the outer metal shell of the
replace if kit 1-00-574305 is used. The kit includes installation instructions and all materials needed to remove the
rebox oor and still maintain a safe, compliant installation. Be certain to contact local code enforcement ofcials
before beginning any modications, as they may not be reversible in many cases.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1513 3-90-00574i
Installing the Accentra 52i Pellet Insert into a Harman Zero Clearance Cabinet
Ifyoudon’thaveafactorybuiltreplaceormasonryreplace,theAccentra52iPelletInsertcanalsobeinstalledintothe
HarmanZeroClearanceCabinet,Part#1-00-574323.Thisistheonly permissiblewaytoinstalltheAccentra52iPelletInsert
withoutasuitablereplace.AftertheHarmanZeroClearanceCabinetisinstalled,typePLventpipe,wallpass-throughsand
terminationsareused(Note:Flexpipeisnotapprovedthesetypesofinstallation).Detailedinstallationinstructionsareincluded
withtheZeroClearanceCabinet.Thesesameinstallationinstructionscanalsobefoundon-lineatwww.harmanstoves.com.
BelowaretwosampleinstallationsusingtheHarmanZeroClearanceCabinet.
PLVentPipeinstalledthroughaceiling. PLVentPipeinstalledthroughanexteriorwall
HarmanZeroClearanceCabinet
Requirements for Terminating the Venting through an
Exterior Wall.
Theclearancetoawindowordoorthatmaybeopenedmust
beaminimumof48"tothesideand48"belowthewindow/
door, and 12" above the window/door. (with outside air
installed, 12” to the side or below)

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1514 3-90-00574i
A combustion blower is used to extract the combustion
gasesfromtherebox.Thiscausesanegativepressurein
the rebox and a positive pressure in the venting system
asshowninFigure4.6.Thelongertheventpipeandmore
elbowsusedinthesystem,thegreatertheowresistance.
The recommended maximum flue lengths for the
Accentra 52i Pellet Insert are as follows:
4" Flex Pipe:
Maximum30Ft.Vertical
3" Flex Pipe:
Maximum20Ft.Vertical
LongrunsofexorPLventpipeinstalleddirectlyvertical
fromtheuestubmayrequiremorefrequentcleaningdue
toyashfallingoffinsideandcollectingdirectlyabovethe
combustionbloweroutlet.
Any use of horizontal venting will require more frequent
cleaning.Itistheresponsibilityoftheinstallertomakesure
theentireuecongurationisaccessibleforcleaning.
4" stainless steel ex vent piping is only allowed for use
in masonry replaces and chimneys or factory built wood
burningreplaceswithclassAmetalchimneys.Allpelletvent
pipemustbesecuredtogethereitherbymeansprovidedby
pipemanufacturerorby3screwsateachjoint.
Use only the specied venting components. Use of any
other components will void the product warranty and
may pose a hazard.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST
VENTING SYSTEM OF THIS APPLIANCE.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
SERVING ANOTHER APPLIANCE.
INSTALL VENT AT CLEARANCES SPECIFIED BY THE
VENT MANUFACTURER.
+= Positive static pressure
= Negative static pressure
Inside
hopper
Inside
rebox
Inuepipe
Infanchamber
&startercollar
+
+-
-
-
C. Venting & Use of Elbows
Figure 4.6

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1515 3-90-00574i
Harman® strongly recommends installing battery back-
up to minimize entry of smoke into the room in the
event of power loss.
Your pellet/biomass burning appliance relies on a
combustionblowertoremoveexhaust.Apowerfailurewill
cause the combustion blower to stop. This may lead to
exhaustseepingintotheroom.Verticalriseintheventing
may provide natural draft. It is, however, no guarantee
againstleakage.
There are two Harman® approved battery back-up
options for your appliance:
Uninterruptible Power Supply (UPS) UPS battery
back-ups are available online or at computer and ofce
equipmentstores.YourHarman®appliancewithRevEor
latersoftwareavailablebeginninginNovember2010may
bepluggeddirectlyintoaHarman®approvedUPS:
• TheAPC(AmericanPowerConversion)model#BE750G
and the TrippLite model INTERNET750U are tested
and approved. Other brands or models may not be
compatible.
Whenpowerislost,afullychargedUPSwillpowerasafe,
combustion blower only shut-down. Your appliance will
pulsetheblowereveryfewsecondstoclearexhaustuntil
thereisout.
NOTE: The UPS provides safe shut-down only. It is not
intended for continued operation.
Yourappliancewillrecognizewhenpowerisrestored.What
happens depends on ESP temperature and whether it is
equippedwithautomaticignition:
• In “Automatic” setting,unitsequippedwithautomatic
ignitionwillrespondtothesetpointandESPtemperature
andresumenormaloperation.
• In “Manual” setting or for units without automatic
ignition:
• IftheESPiscool,theappliancewillremainshutdown.
• IfthereisoutandtheESPisstillwarm,thefeedermay
restart.Sincethereisout,theESPtemperaturewillnot
rise.Theunitwillthenshut-down,andmayashasix-
blinkstatuserror.(SeeESPerrorcodes)
• Ifthereisstillburning,itwillresumenormaloperation.
Contact your dealer if you have questions about UPS
compatibilitywithyourappliance.
Harman® Surere 512H Battery Back-up The 512H
connectstoa12voltdeepcyclebatterythatwillrunyour
appliance for up to eight (8) hours. It includes a trickle
chargefeaturethatkeepsyourbatterychargedwhenpower
is available. NOTE: If the power is out for longer than
battery life, smoke leakage may still occur unless your
stove has been safely shut down.
Minimizing Smoke During Loss of Power Using Battery Back-up
CAUTION
!
Always keep appliance doors and hopper lid closed
and latched during operation and during power
failures to minimize risk of smoke or burn-back.
CAUTION
!
Use only Harman® approved battery back-up devices.
Other products may not operate properly, can create
unsafe conditions or damage your appliance.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1516 3-90-00574i
Stub Mounting Bolts
Intake Stub
Stub Gasket
Self-drilling screws (2)
Outside Air Intake Weldment
D. Outside Air
TheoutsideairkitconsistsofaIntakeStub,StubGasket,
OutsideAirintakeWeldmentandhardware.Figure4.7.
Anadjustablechimneyintakeextension,part#1-00-674104
isavailabletobeusedonmasonrychimneysonly.Figure4.8.
Additionalinformationanddiagramscanbefoundunderthe
“VentingTerminationDesign”sectionofthemanual.
Toinstalloutsideair,usekitpart#1-00-574350.Followthe
installationinstructionsprovidedwiththekit.
100%OutsideAirKit-#1-00-574350
Figure 4.7
E. Locating Your Appliance & Chimney
Locationoftheapplianceandchimneywillaffectperformance.
• Installthroughthewarmairspaceenclosedbythebuilding
envelope.Thishelpsto produce more draft,especially
duringlightinganddie-downofthere.
• Penetratethehighestpartoftheroof.Thisminimizesthe
effectsofwindloading.
• Locate termination cap away from trees, adjacent
structures,unevenrooflinesandotherobstructions.
• Minimizetheuseofchimneyoffsets.
• Considertheappliancelocationrelativetooorandceiling
andatticjoists.
F. Draft
Draftisthepressuredifferenceneededtoventappliances
successfully.Whenanapplianceisdraftingsuccessfully,all
combustionbyproductsareexitingthehomethroughthe
chimney.
Considerationsforsuccessfuldraftinclude:
• Preventingnegativepressure
• Locationofapplianceandchimney
Tomeasurethedraftornegativepressureonyourappliance
use a magnahelic or a digital pressure gauge capable of
reading0-1inchesofwatercolumn(W.C.).
The appliance should be running on high for at least 15
minutesforthetest.
Withthestoverunningonhighyoushouldhaveanegative
pressureequaltoorgreaterthanthenumbergiveninthe
chartbelow.Ifyouhavealowerreadingthanyoundonthe
chart,yourappliancedoesnothaveadequatedrafttoburn
thefuelproperly.
Minimum Vacuum Requirements: -.15 in. W.C.
• DONOTCONNECTTHISUNITTOACHIMNEYFLUE
SERVICINGANOTHERAPPLIANCE.
• DONOTCONNECTTOANYAIRDISTRIBUTIONDUCT
ORSYSTEM.
Mayallowuegasestoenterthehouse
Priortoinstallingtheuepipe,connectadraftmetertothe
stove.(The draft meter musthave a minimum range of 0
to1”)Record therstreading.Connectuepipetostove
andbesurealldoorsandwindowsinthehomeareclosed.
Record the second draft reading _______. If the second
readingismorethan.05”lowerthantherstreading,check
forpossiblerestrictionsortheneedforoutsideair.Formore
informationonthedrafttestprocedure,refertotheLowDraft
VoltageAdjustmentssectionofthismanual.
Chimney cap and flex termination with
flashing plate (by installer) THIS CAP
MUST BE Stainless Steel
With the intake assenbly anchored into
place, finish the 4” SS flex liner and cap
(by installer) by screwing the cap’s flashing
plate to the top of the intake assenbly.
A waterproofing sealant can be used to
seal the corners and irregularities in the top
of the masonry chimney.
After adjusting the intake assembly
for the flue size, secure the
assembly to the top of the chimney
with some form of anchors or
screws.
Masonry Flue Liner
Masonry Chimney
AdjustableChimneyIntakeExtensionPart#1-00-674104
Figure 4.8
18 1/8”
18 1/8”
18”
18”
22 1/8”
18”
22 1/8”
4”
6”
1”
Harman® SS Chimney Top Intake Assembly
CAUTION
!

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1517 3-90-00574i
G. Negative Pressure
WARNING! Risk of Asphyxiation! Negative pressure can
cause spillage of combustion fumes and soot.
Negativepressureresultsfromtheimbalanceofairavailable
fortheappliancetooperateproperly.Itcanbestrongestin
lowerlevelsofthehouse.
Causesinclude:
• Exhaustfans(kitchen,bath,etc.)
• Rangehoods
• Combustionairrequirementsforfurnaces,waterheaters
andothercombustionappliances
• Clothesdryers
• Locationofreturn-airventstofurnaceorairconditioning
• ImbalancesoftheHVACairhandlingsystem
• Upperlevelairleakssuchas:
 - Recessedlighting
 - Attichatch
 - Ductleaks
Tominimizetheeffectsofnegativeairpressure:
• Installtheoutsideairkitwiththeintakefacingprevailing
windsduringtheheatingseason
• Ensureadequateoutdoorairforallcombustionappliances
andexhaustequipment
• Ensurefurnaceandairconditioningreturnventsarenot
locatedintheimmediatevicinityoftheappliance
• Avoidinstallingtheappliance near doors, walkways or
smallisolatedspaces
• Recessedlightingshouldbea“sealedcan”design
• Attichatchesweatherstrippedorsealed
• Atticmountedductworkandairhandlerjointsandseams
tapedorsealed
NOTICE: Hearth & Home Technologies assumes no
responsibility for the improper performance of the chimney
system caused by:
• Inadequate draft due to environmental conditions
• Down drafts
• Tight sealing construction of the structure
• Mechanical exhausting devices
H. Avoiding Smoke and Odors
Avoiding Smoke and Odors
Negative Pressure, Shut-down, and Power Failure:
To reduce the probability of back-drafting or burn-back in
the pellet burning appliance during power failure or shut-
down conditions, the stove must be able to draft naturally
withoutexhaustbloweroperation.Negativepressureinthe
housewillresistthisnaturaldraftifnotaccountedforinthe
pelletapplianceinstallation.
Heatrisesinthehouseandleaksoutatupperlevels.This
airmustbereplacedwithcoldairfromoutdoors,whichows
into lower levels of the house. Vents and chimneys into
basementsandlowerlevelsofthehousecanbecomethe
conduitforairsupply,andreverseundertheseconditions.
Outside Air:
Hearth & Home Technologies recommend attaching
outside air in all installations, especially lower level and
main oor locations.
Pernationalbuildingcodes,considerationmustbegivento
combustionairsupplytoallcombustionappliances.Failure
tosupplyadequatecombustionairforallappliancedemands,
mayleadtoback-draftingofthoseandotherappliances.
Whentheapplianceisside-wallvented:Theairintakeisbest
locatedonthesameexteriorwallastheexhaustventoutlet
andlocatedloweronthewallthantheexhaustventoutlet.
When the appliance is roof vented: The air intake is best
locatedontheexteriorwallorientedtowardstheprevailing
winddirectionduringtheheatingseason.
Theoutsideairconnectionwillsupplythedemandsofthe
pellet appliance, but consideration must be given to the
totalhousedemand.Housedemandmayconsumesome
airneededforthestove,especiallyduringapowerfailure.It
maybenecessarytoaddadditionalventilationtothespacein
whichthepelletapplianceislocated.Consultwithyourlocal
HVACprofessionaltodeterminetheventilationdemandsfor
yourhouse.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1518 3-90-00574i
Vent Congurations:
To reduce probability of reverse drafting during shut-
down conditions, Hearth & Home Technologies strongly
recommends:
• Installingthepelletventwithaminimumverticalrunof
vefeet,preferablyterminatingabovetheroofline.
• Installingtheoutsideairintakeatleastfourfeetbelowthe
venttermination.
Topreventsootdamagetoexteriorwallsofthehouseand
topreventre-entryofsootorashintothehouse:
• Maintainspeciedclearancestowindows,doors,andair
inlets,includingairconditioners.
• Ventsshouldnotbeplacedbelowventilatedsofts.Run
theventabovetheroof.
• Avoidventingintoalcovelocations.
• Ventsshould not terminate under overhangs,decks or
ontocoveredporches.
• Maintain minimum clearance of 12 inches from the
ventterminationtotheexteriorwall.Ifyouseedeposits
developing on the wall, you may need to extend this
distancetoaccommodateyourinstallationconditions.
Hearth & Home Technologies assumes no responsibility
for, nor does the warranty extend to, smoke damage
caused by reverse drafting of pellet appliances under
shut-down or power failure conditions.
WARNING! DO NOT CONNECT THIS UNIT TO ANY AIR
DISTRIBUTION DUCT OR SYSTEM.
Ifarearexituecongurationisused,withorwithoutoutside
air, make sure the ue pipe termination clearances are
followedasperNFPA211.
Vent Pipe
Besure to use approved pelletvent pipe wall andceiling
pass-throughttingstogothroughcombustiblewallsand
ceilings.Besuretouseastartingcollartoattachtheventing
systemtothestove.Thestartingcollarmustbesecuredto
theuestubwithatleastthreescrews,andsealedwithhigh
tempsiliconecaulking.
4” stainless steel ex vent piping is only allowed for use
inmasonryreplacesandchimneysorfactorybuiltwood-
burningreplaceswithclassAmetalchimneys.
Pellet venting pipe (also known as Type PL vent) is
constructedoftwolayerswithairspacebetweenthelayers.
Thisairspaceactsasaninsulatorandreducestheoutside
surfacetemperature to allow a clearance to combustibles
of only 1 inch. The sections of pipe lock together to form
anairtightsealinmostcases;however,insomecasesa
perfect seal is not achieved. For this reason and the fact
thattheAccentra52iPelletInsertoperateswithapositive
ventpressure,wespecifythatthejointsalsobesealedwith
silicone.
Wherepassingthroughanexteriorwallorroof,besuretouse
theappropriatepass-throughdeviceprovidinganadequate
vaporbarrier.Ventingmanufacturersgenerallyprovidethese
pas-throughdevices.
Venting Termination Requirements
1. Termination must exhaust above air inlet elevation.
It is recommended that at least 60 inches (1524mm)
of vertical pipe be installed when appliance is vented
directly through a wall. This will create a natural draft,
whichwillhelppreventthepossibilityofsmokeorodor
ventingintothehomeduringapoweroutage.Itwillalso
keep exhaust from causing a nuisance or hazard by
exposing people or shrubs to high temperatures. The
safest and preferred venting method is to extend the
ventverticallythroughtheroof.
2. Distance from doors and operable windows, gravity or
ventilationairinletsintobuilding:
a. Notlessthan48inches(1219mm)below;
b. Notlessthan48inches(1219mm)horizontallyfrom;
c. Notlessthan12inches(305mm)above.
3. Distancefrompermanentlyclosedwindows:
a. Notlessthan12inches(305mm)below,horizontally
fromorabove.
4. Distance between bottom of termination and grade
should be 12 inches (305mm) minimum. This is
conditionaluponplantsinthearea,andnatureofgrade
surface.Thegradesurfacemustbeanon-combustible
material(i.e.,rock,dirt).Thegradesurfacemustnotbe
lawn.Distancebetweenbottomofterminationandpublic
walkwayshouldbe84inches(2134mm)minimum.
5. Distance to combustible materials must be 24 inches
(610mm) minimum. This includes adjacent buildings,
fences,protrudingpartsofthestructure,roofoverhang,
plantsandshrubs,etc.
6. TerminationCapLocation(HomeElectricalService)
• Side-to-side clearance is to be the same as minimum
clearancetovinylinsidecorners.
• Clearanceofaterminationcapbelowelectricalservice
shallbethesameasminimumclearancetovinylsofts.
• Clearanceofaterminationcapaboveelectricalservice
willbe12inches(305mm)minimum.
• Location of the vent termination must not obstruct or
interferewithaccesstotheelectricalservice.
For Canada Only: This Fireplace Insert must be
installed with a continuous chimney liner of 4”
diameter extending from the replace insert to the top
of the chimney. The chimney liner must conform to the
Class 3 requirements of CAN/ULC-S635, Standard for
Lining Systems for Existing Masonry or Factory-Built
Chimneys and Vents, or CAN/ULC-S640, Standard for
Lining Systems for New Masonry Chimneys.

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1519 3-90-00574i
I. Mobile Home Installation
YoumustuseaHarman®OutsideAirKitforinstallationin
amobilehome.
1. Anoutsideairinletmustbeprovidedforthecombustion
airandmustremainclearofleaves,debris,iceand/or
snow. It must be unrestricted while the appliance is in
usetopreventroomairstarvationwhichcausessmoke
spillage.Smokespillagecanalsosetoffsmokealarms.
2. Thecombustionairductsystemmustbemadeofmetal.
Itmustpermitzeroclearancetocombustibleconstruction
andpreventmaterialfromdroppingintotheinletorinto
the area beneath the dwelling and contain a rodent
screen.
3. The appliance must be secured to the mobile home
structurebyboltingittotheoor(usinglagbolts).Usethe
sameholesthatsecuredtheappliancetotheshipping
pallet.
4. The appliance must be grounded with #8 solid copper
grounding wire or equivalent, terminated at each end
withanNECapprovedgroundingdevice.
5. Refer to “Clearances to Combustibles and Floor
Protection” section of this manual for listings to
combustibles.
6. Use silicone to create an effective vapor barrier at
the location where the chimney or other component
penetratestotheexteriorofthestructure.
7. Follow the chimney manufacturer’s instructions when
installingtheventsystemforuseinamobilehome.
8. InstallationshallbeinaccordancewiththeManufacturers
Home&SafetyStandard(HUD)CFR3280,Part24.
THE STRUCTURAL INTEGRITY OF THE MOBILE
HOME FLOOR, WALLAND CEILING/ROOF MUST BE
MAINTAINED.
DoNOTcutthrough:
• Floorjoist,wall,studsceilingtrusses.
• Anysupportingmaterialthatwouldaffectthestructural
integrity.
SparkArrestorCap
RoofFlashing
ApprovedClass”L”or
“PL”PelletVent
JoistShield/Firestop
StormCollar
Asphyxiation Risk:
NEVERINSTALLINTOASLEEPINGROOM
Consumesoxygenintheroom
WARNING
!
Installation must comply with Manufactured Home
and Safety Standard (HUD), CFR 3280, Part 24
WARNING
!
CAUTION
!
Neverdrawoutsidecombustionairfrom:
• Wall,oororceilingcavity.
• Enclosedspacesuchasanatticorgarage.
CAUTION
!

Harman® • Accentra 52i Installation Manual_R16 • 2013 -___ • 09/1520 3-90-00574i
Inspect appliance and components for
damage. Damaged parts may impair safe
operation.
• DoNOTinstalldamagedcomponents.
• DoNOTinstallincompletecomponents.
• DoNOTinstallsubstitutecomponents.
Reportdamagedpartstodealer.
J. Fire Safety
To provide reasonable re safety, the following should be
givenseriousconsideration:
• Installatleastonesmokedetectoroneachoorofyour
home.
• Locatesmokedetectorawayfromtheheatingappliance
andclosetothesleepingareas.
• Followthesmokedetectormanufacturer’splacementand
installationinstructionsandmaintainregularly.
• ConvenientlylocateaClassAreextinguishertocontend
withsmallres.
• Intheeventofahopperre:
 • Evacuatethehouseimmediately.
• Notifyredepartment.
K. Inspect Appliance & Components
• Remove appliance and components from packaging
andinspectfordamage.
• Reporttoyourdealeranypartsdamagedinshipment.
• Read all the instructions before starting the
installation. Follow these instructions carefully
during the installation to ensure maximum safety
and benet.
• Installationanduseofanydamagedappliance.
• Modicationoftheappliance.
• InstallationotherthanasinstructedbyHearth&Home
Technologies.
• Installation and/or use of any component part not
approvedbyHearth&HomeTechnologies.
• Operating appliance without fully assembling all
components.
• DoNOTOverre.
Or any such action that may cause a re hazard.
FireRisk.
Hearth & Home Technologies disclaims
anyresponsibilityfor,andthewarrantywill
bevoidedby,thefollowingactions:
WARNING
!
WARNING
!
WARNING
!
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.