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SOFFIT TERMINATION
DUCT TERMINATION
MUST BE MORE THAN
3 FT BELOW CHIMNEY
DUCT
TERMINATION
40 FT MAX.
DUCT RUN
EXTERIOR WALL TERMINATION
EXTERIOR
WALL
DUCT
TERMINATION
RAIN CAP
Figure 2. Soffi t and Exterior Wall Termination
2
Hearth & Home Technologies • AK-225 Outside Air Kit Instructions • 200-900L Rev. B • 11/13
ATTIC
CEILING
DUCT
DUCT
40 FT MAX.
DUCT RUN
1. Remove and discard the outside air knockout (or cover
plate) located at the side or bottom of the fi replace. Use
care not to rub against the sharp edges of this opening
to avoid cuts. Some appliances may not have a cover
plate.
2. Attach the side collar with four (4) screws to the side or
bottom of the fi replace. Slide the duct over the collar and
attach the duct to the collar using the plastic tie straps
or three (3) screws (screws not provided). Continue
attaching the ducting together using three (3) screws
at each joint until you have installed suffi cient duct to
arrive at the duct termination location.
3. Install the duct termination from the outside of the home
and cover it with the rain cap. Cut a hole in the desired
location approximately 4 1/2 inches in diameter, caulk
around the hole, and slide the termination through the
opening from outside the home. The termination/rain
cap should be caulked around its perimeter to assure
a tight seal. The rain cap opening should be positioned
downward. See Figure 3.
WALL
CAULKING
Figure 3. Termination Rain Cap
DUCT
TERMINATION
RAIN CAP
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