14
Inlet Cover part# 1-10-08542
Flex pipe part# 1-00-08543
uSE 3 or 4 inch Pellet vent pipe- (Type Pl)
A combustion blower is used to extract the combustion
gases from the firebox. This causes a negative pressure
in the firebox and a positive pressure in the venting
system as shown in fig. 19. 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 possible 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".
be sure to
use approved pellet vent pipe wall and ceiling pass-
through fittings to go through combustibles.
Be
sure to use a starting collar to attach the venting system
to the stove.
All joints for connector pipe must be
fastened with a minimum of three screws. Follow
pellet vent manufacturer instructions for properly
securing each pellet vent joint. The pellet starting
collar must be secured to the unit's flue collar.
Outside air is necessary 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 1-00-08543. There is a break-away hole on the
rear panel which must be removed before connecting
the flex pipe. The pipe should be run outside 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 1-10-09542 should be used to keep
birds, rodents, etc. out of pipe.
venting
Pellet venting pipe ( also known as PL vent ) is
constructed of two layers with an 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 or less. 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 Advance
operates with a positive vent pressure,
we specify that
the joints also be sealed with silicone.
INSTAll vENT AT ClEArANCES SPECIFIEd
bY ThE vENT mANuFACTurEr.
ChImNEY CONNECTOr mAY NOT PASS Thru
AN ATTIC, rOOF SPACE, ClOSET, FlOOr, Or
CEIlINg.
vent Pipe
Outside Air
Fig.19
direct vent wall Passthrough
The harman direct vent wall Passthrough (Part # 1-00-
677077) makes installing your harman Pellet Stove
with outside air much easier. It is made to fit walls
from 4 1/2" up to 10 1/8" thick with a square opening
of 6" to 6 1/2".
Outside air flex pipe
goes here
Room Sensor
Connection Ports
Outdoor Half
Indoor Half
+
+
-
= Positive static pressure
= Negative static pressure
+
-
Summary of Contents for Advance Pellet Stove
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