Harman Stove Company P61-2 Stove User Manual

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7

Acombustionblowerisusedtoextractthecom-

bustiongasesfromthefirebox.Thiscausesanega-

tivepressureinthefireboxandapositivepressure

intheventingsystemasshowninfig.6.Thelonger

theventpipeandmoreelbowsusedinthesystem,

thegreatertheflowresistance.Becauseofthese

factswerecommendusingasfewelbowsaspos-

sibleand15feetorlessofventpipe.Themaximum

horizontalrunshouldnotexceed48".Ifmorethan

15feetofpipeisneeded,thediametershouldbe

increasedfrom3"to4"becausealargerpipecauses

less flow resistance. Be sure to use approved

pelletvent pipewall andceiling pass through

fittings to go through combustible walls and

ceilings.Besuretouseastartingcollartoattach

theventingsystentothestove.Thestartingcollar

mustbesealedtothestovewithhightempsili-

conecaulking.

Vent Pipe

Pelletventingpipe(alsoknownas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 3 inches. 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P61operateswithapositiveventpressure

we specify that the joints also be sealed with

clearsilicone.

OutsideAir

Outsideairisoptionalexceptinmobilehomes

andwherebuildingcodesrequire.Thebenefitof

outside air is mainly noticed in small very tight

houses.

Toinstalloutsideairuse23/8"I.D.flexpipe

partnumber2-00-08543.Thereisabreak-awayhole

ontherear panelwhichmustbe removedbefore

connectingtheflexpipe. Thepipeshouldberunout-

sideandterminatetothesideorbelowtheventpipe

outletsotheflueoutletismorethan12"fromthe

inletcover.Themaximumlengthrunofthispipeis

15feet.Ifalongerrunisneededthesizemustbe

increasedto3".Inletcoverpartnumber1-10-08542

shouldbeusedtokeepbirds,rodentsetc.out ofthe

pipe.

HRV

WheninstallinginahousewithaHeatReclaim-

ingVentilationSystem(HRV)besurethesystemis

balancedandisnotcreatinganegativepressurein

thehouse.

Outsideairflexpipe

goeshere

InletCoverpart#

1-10-08543

Flexpipepart#

2-00-08543

Venting

IMPORTANTNOTICE

PelletVentPipeorPLVentPipeMustbeused.

+=Positivestaticpressure

=Negativestaticpressure

Fig.6

Fig.7

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Harman Stove Company P61-2 Stove User Manual