Harman PF-120 - Clearances To Combustibles

Harman® • PF-120 Installation Manual_R1 • 2014 -___ • 03/147
3-90-08121i
NOTE: All Clearances are Minimum Clearances
If installing the furnace in a room separated from the
remaininglivingspaces,theminimumsizeoftheroommust
benosmallerthan8’x8’.Figure3.2.Thereasonforthis
isheatbuild-upandrequiredspaceforserviceandnormal
operation.Thisistheminimumsizeoftheroomevenifitis
builtofnon-combustiblematerial.
HighandlowairventsMUSTbeinstalledbetweentheroom
andtheremaininglivingspace.Eachventshouldbeatleast
72square inches in area.(Theventsize will need tobe
increasedifthereisnoreturnairductingsystem.)
Thestripedareasaretheminimumclearancestocombustibles
whichis36”fromstovebody,notthehopperorblower.
Theshadedareaindicatestherequiredoorprotectionarea.
Thefurnacerequires48”x52”ofoorprotectioncentered
aroundtheskidplatefootprint.Flooringshouldbeaminimum
of26gaugesheetmetalcoveringtheinstallationclearance
areaand18”infrontof,and8”toeithersideoftheashpan
door.
The18”clearancefromthehopperendisamanufacturer’s
recommendation for adding pellets and/or servicing the
feedermechanism.
Theminimumclearancetothetopoftheplenumis4”.Fig.3.3
Notetheminimumheighttothebottomofthesupplyductif
itcrossesthehopper.
Theminimumductcongurationtoalivingspaceabovethe
furnaceisasshownbelow.Anoffsetofatleast24”MUST
beinstalledbetweentheplenumandtheoorregister.The
register size MUST have an area of at least 240 square
inches.
The minimum ceiling height is 6’6”. This is set by the
clearance to combustibles (28”) from the top of the of
the furnace. See Figure 3.3.
NOTE: Install vent at clearances specied by the vent
manufacturer.
Figure 3.2
B. Clearances to Combustibles
Floor Protection
96” Minimum
96” Minimum
48” Wide
52” Long
18”
12”
18”
36”
1”
1”
64.5”
36”
When installing a oor register, the
temperature of the discharge air
MUST be taken into consideration
(Thedischargeairtemperaturemay
behighenoughtocauseburnsifnot
properlyoperatedandmaintained.)
CAUTION
!
The Blower Motor full loadAMPS
MUSTbechecked.Aplenumdamper
mayberequiredtoadjustthemotor
fullloadAMPStothemotornameplate
rating.
CAUTION
!
24”
28”
65.5”
1”
Min. 78”
Ceiling Height
24”
1”
4”
12”
36”
Figure 3.3