A wall strap should be placed just below the last 90-degree section to make the system
more stable. If you live in an area that has heavy snowfall it is recommended the installation
be taller than three feet (3’) to get above the snow drift line. This same installation can be
used if your stove is below ground level by simply adding the clean-out section and vertical
pipe inside until ground level is reached. With this installation you have to be aware of the
snowdrift line, dead grass and leaves. We recommend a three foot (3’) minimum vertical rise
on the inside or outside of the house.
The through-the-wall installation is the least expensive and simplest installation. Never
terminate the end vent under a deck, in an alcove, under a window or between two windows.
Call (800) 516-3636 to inquire about the AC-3000 Pellet Vent Kit.
Through the Ceiling
When venting the stove through a ceiling, the pipe is connected the same as through the
wall, except the clean-out tee is always on the inside of the house. You must use the proper
ceiling support flanges and roof flashing that are supplied by the pipe manufacturer – follow
the pipe manufacturer’s directions and the illustration in this manual. It is important to note
that, if your vertical runs of pipe are more than fifteen feet (15’), at this point the pellet vent
pipe size should be increased to four inches (4”) in diameter. Do not exceed four feet (4’) of
pipe on a horizontal run; do attempt to use the least number of elbows for your flue system. If
an offset is used, it is better to install a 45-degree elbow whenever possible.
Existing Flue System
If you are replacing a wood stove with a pellet unit, the chimney or pipe should be cleaned
thoroughly before proceeding with the installation. The flue system should be either masonry
or a UL approved pre-manufactured Class A flue system. The flue thimble or pipe will be
either six inches (6”) or eight inches (8”), and the proper reducer (3” to 6” or 3” to 8”) can be
purchased or ordered by your local dealer. Connect a three inch (3”) tee with clean-out to the
pipe adapter — seal this with a high temperature stove cement, then extend the pipe to the
installed reducer at your thimble. If the thimble is in the ceiling the pipe will go straight up, but
if the thimble is in the wall another 90-degree elbow will be required to make the connection.
Outside Air
Outside air is mandatory for this unit to operate properly. This unit has been designed and
tested with this connection, because so many homes are airtight and there is not adequate
combustion air available from inside the home. The air intake pipe is located at the rear of
the burn pot and measures one and one half inches (1 ½”) in diameter. This connection can
be made with 1 7/8” metal pipe and coupler, and should exit through the wall (see “Important
Information” section). Our part number PU-OAK (Outside Air Kit) can be used. Be sure to
secure the pipe to the unit with aluminum tape or a clamp. The outside end of the pipe
should be covered (screened) to prevent foreign matter from entering the system. If your unit
is located below ground level, you will need to run the pipe up and then outside the dwelling.
If your run of outside air pipe is more than 6’ (six feet), you must increase to 3” diameter pipe.
FLOOR AND WALL PROTECTION
Floor Protection
If your floor is constructed of a non-combustible material such as brick or concrete there is
no need for floor protection. If your floor is constructed of a combustible material such as
hardwood, linoleum or carpet, then you will be required to use floor protection between the
unit and the combustible. The protection that is chosen should be UL equal, and should be
large enough to provide at least one inch (1”) behind and four inches (4”) on both sides of the
stove. The clearance at the door of the stove should be at least six inches (6”). This add-on
furnace pellet unit will need a 36” x 36” floor protector.
