1
Vermont Castings Stratton
30004508
FP1060
AKMST installation
7/6/00 djt
Duct Termination
Must be More Than 3’
Below Chimney
40’ Max.
Duct Run
Duct Termi-
nation
Ceiling
Attic
Duct
Soffit Termination
Exterior Wall
Rain Cap
Duct Termina-
tion
40’ Max. Duct Run
Duct
exterior wall Termination
FP1060
Fig. 15
Typical installations.
FP1061
AKMST
rain cap
7/6/00 djt
Caulking
Wall
Duct Termination
Rain Cap
FP1061
Fig. 17
Caulk and secure the duct termination/rain cap in
place.
FP1592
outside air cover
10/05
Outside Air
Opening
FP159
Fig. 16
Attach the inlet collar.
The duct run may be horizontal, vertical, inclined or any
combination of these. Vertical duct runs must be at least
three (3) feet below the fireplace chimney flue exit. (Fig.
15) You are now ready to install the AK-MST Outside Air
Kit.
1. Remove the outside air cover plate located at the
center of the right or left (either may be used) side
of the fireplace. Discard the outside air cover plate.
Use care not to rub against the sharp edges of this
opening to avoid cuts.
. Use the screws removed from the cover plate to
attach the inlet collar to the side near the bottom of
the fireplace. (Fig. 16) 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 to assemble duct sections using three (3)
screws at each joint until you have installed sufficient
duct to reach the duct termination location.
3. At the termination end, install the duct termination.
This should be installed from the outside of the
home. Cut a hole in the desired location approxi-
mately 4
Z\x
” in diameter, caulk around the hole, and
slide the termination through the opening from out-
side the home. The termination/rain cap should be
caulked around its perimeter to assure a tight seal.
The rain cap opening should be positioned down-
ward. (Fig. 17)
The AK-MST Outside Air Kit is now installed and ready
for use.
installing the chimney System
Start by attaching the first chimney section to the collar
on top of the fireplace.
Install the pipe as pictured in Figure 18. When you
get a good lock, you will clearly hear the pipe snap
together. Once sections are snap-locked in place, it is
extremely difficult to get them apart.
Make sure the
