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ImPOrTANT NOTICE
Pellet Vent Pipe or PL Vent Pipe Must be used.
+ = Positive static pressure
= Negative static pressure
Fig. 7
Inlet Cover part#
1-10-08542
Fig. 8
Outside air flex pipe
goes here
Flex pipe part#
1-00-08543
venting
A combustion blower is used to extract the combus-
tion gases from the firebox. This causes a negative
pressure in the firebox and a positive pressure in the
venting system as shown in fig. 7. The longer the vent
pipe and more elbows used in the system, the greater
the flow resistance. Because of these facts we recom-
mend 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" because
a larger pipe creates less flow resistance. be sure to
use approved pellet vent pipe wall and ceiling pass
through fittings to go through combustible walls
and ceilings. The starting collar must be secured
to the flue collar with a minimum of two fasteners.
It is also recommended that all seams and joints
inside the room are sealed with silicone caulking.
Pellet venting pipe (also known as "PL" vent ) is
constructed of two layers with air space between the
layers. Some manufacturers produce PL vent designed
specifically for corn-burning. If planning to burn corn or
other grains, be sure venting system is approved and
warranted for corn-burning. The sections of pipe lock
together to form an air tight seal, however, in some cases
a perfect seal is not achieved. For this reason and the
fact that the PC45 operates with a positive vent pres-
sure we specify that the joints also be sealed with
clear silicone.
Outside air is optional except 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 num-
ber 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 3
feet or more to the side or below the vent pipe outlet.
Never terminate the outside air above the vent pipe
outlet. 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 pipe.
When installing in a house with a Heat Reclaiming
Ventilation System (HRV) be sure the system is bal-
anced and is not creating a negative pressure in the
house.
vent Pipe
Outside Air
hrv
PC 45 Corn/Pellet Stove
7
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