Harman Accentra Pellet Insert User Manual

21
3-90-00674R28_12/13
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g.46.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 Insert are as follows:
4" Stainless Steel Flex: 30 Lineal ft. Vertical*
4" PL Vent Pipe:
4" Pl Vent Pipe: 30 Lineal ft. Vertical*
4" Pl Vent Pipe: 14 ft. Vertical w/1-90
°
and 12 lineal ft. horizontal*
If additional 4" PL Vent ttings are required, the overall
length must be reduced by:
Vertical 90
°
or T: 2.5'
Vertical 45
°
: 1.5'
Horizontal 90
°
or : 5.0'
Horizontal 45
°
: 2.5'
3" PL Vent Pipe:
20 Lineal ft. vertical*
8 Lineal ft. vertical w/1-90
°
& 8 lineal ft. horizontal*
If additional 3" PL Vent ttings are required, the overall
length must be reduced by:
Vertical 90
°
or T: 2.0'
Vertical 45
°
: 1.0'
Horizontal 90
°
or T: 4.0'
Horizontal 45
°
: 2.0'
* 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.
Venting
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.
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.
O
+
= Positive static pressure
= Negative static pressure
Fig.46
Inside
hopper
Inside
rebox
Inuepipe
Infan
chamber
&starter
collar
+
+
-
-
O
-

Harman Accentra Pellet Insert Specifications

General

Brand	Harman
Model	Accentra Pellet Insert
Category	Indoor Fireplace
Language	English