Harman PF100 User Manual

9
3-90-08101R23_06/13
Venting
Design
Therstthingneededisdecidingwhereandhowthefurnace
willbeinstalled.
ThingsthatneedtobetakenintoconsiderationareVenting,
Supply and Return Ducting, Electrical, and Condensation
Drainage (ifA/C is installed). Don’t forget access to the
furnaceforservice.
Whenthereturnairinletpositionisknown,thelterboxand
distributionblowercanbeinstalled.Afterthefurnaceisset
intoplace,theventingcanbecompleted.
Venting
Use 4” pellet vent pipe only.
A combustion blower is used to extract the combustion
gasesfromtherebox.Thiscreatesanegativepressurein
thereboxandapositivepressureintheventingsystemas
showning.2.Thelongertheventpipeandmoreelbows
usedinthesystem,thegreatertheowresistance.Because
of these facts, we recommend using as few elbows as
possible and 30 feet or less of vent pipe. The maximum
horizontalrun should not exceed 18 feet. Remember, the
horizontal pipe sections will accumulate with y-ash rst.
Keepthisareaclean.
Be sure to use wall and ceiling pass through ttings
which are approved for pellet vent pipe when going
through combustible materials. Besuretouseastarting
collar to attach the venting system to the furnace. The
starting collar must be sealed to the furnace ue collar
with high temp silicone caulking or aluminum tape, and
screwed into the ue collar at least three (3) places.
Vent Pipe
4”pelletventpipe(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aslowas2inches.This
clearanceistestedandlistedbythepipemanufacturers.
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furnace
operateswithapositiveventpressure,we specify that all
joints within the structure should also be sealed with
high-temp silicone.
Fig. 1
NOTE: Read and follow all of the vent pipe
manufacturers’ instructions on the proper installation
and support of the vent pipe. Adhere to all clearances.
Clearances and Venting
Theshadedareasarewheretheclearances
forthePLventpipemustbemaintained
at3”.Aftertheventingleavestheshaded
area it may be installed as per the vent
manuafacturerinstructions.(Onlylistedwall
pass-throughsandrestopsmaybeused.)
See NOTES:
on page 12
16”
16”
NOTE: Use only 4” diameter “PL” venting system.
Be sure to inspect and clean exhaust venting system
frequently.
Fig. 2
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Harman PF100 Specifications

General

Brand	Harman
Model	PF100
Category	Furnace
Language	English