Harman XXV - Venting; Venting Requirements and Clearances

8
XXV Pellet Stove
Outside air ex pipe
goes here.
Inlet Cover part#
1-10-08542
Flex pipe part#
1-00-08543 (25')
Outside Air
Here arefourbenetsof outside air:
1. Having air introduced from outside the living area
booststheoverallthermalefciency.
2. It eliminates draft problems that can occur in tight
homes.
3. It reduces the chance for smoke spillage in the
event of a power failure.
4. It allows your vent termination to be as close as
18" from windows or doors.
Outside air is optional except in mobile homes and
wherebuildingcodesrequire.Thebenetofoutside
air is mainly noticed in small, very tight, houses.
To install outside air use 2 3/8" I.D. non-
combustibleexpipe.Thereisabreak-awayhole
on the rear panel of the XXV stove which must be
removedbeforeconnectingtheexpipe.The pipe
should be run outside and terminate to the side or
belowtheventpipeoutletsotheue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 unless the Harman wall
passthrough is being used.
Direct Vent Wall Passthrough
The Harman Direct Vent Wall Passthrough (Part
# 1-00-677077) makes installing your Harman Pel-
let Stove with outside air a lot easier. It combines
the needed wall protection for the venting, with a
sourceofintakeairforcombustion.Itismadetot
walls from 4 1/2" to 10 1/8" thick with a single square
opening in the wall of 6-1/2 inches.
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.
Venting
Fig. 7
Fig. 8
Outdoor Half
Indoor Half
Adjustable from 4 1/2" to 10 5/8" wall thickness