30
W415-0811 / A / 04.28.10
8.2.1 HORIZONTAL AIR TERMINAL INSTALLATION
A.
Stretch the inner
fl
ex pipe to the required length taking into
account the additional length needed for the
fi
nished wall
surface. Slip the vent pipe a minimum of 2” over the
inner sleeve of the air terminal and secure with 3 #8
screws. Apply a heavy bead of the high temperature
sealant W573-0007 Mill Pac (not supplied).
B.
Using the outer
fl
ex pipe, slide over the outer combustion
air sleeve of the air terminal and secure with 3 #8 screws.
Seal using high temperature sealant W573-0002 (not
supplied).
C.
Insert the vent pipes through the
fi
restop maintaining the
required clearance to combustibles. Holding the air terminal
(lettering in an upright, readable position), secure to the exterior
wall and make weather tight by sealing with caulking (not
supplied).
D.
If more vent pipe needs to be used to reach the
fi
replace, couple
them together as illustrated. The vent system must be
supported approximately every 3 feet for both vertical and
horizontal runs. Use noncombustible strapping to maintain
the minimum clearance to combustibles.
The air terminal mounting plate may be recessed into the exterior wall or siding no greater than the depth
of its return fl ange.
23.1
SCREWS
#10x2"
PIPE
2" OVERLAP
OUTER FLEX
INNER FLEX
PIPE
HIGH TEMPERATURE
SEALANT
CAULKING
HI-TEMP
SEALANT
#8 X 1/2” SELF DRILLING
SCREWS & WASHERS
INNER COUPLER
OUTER COUPLER
OUTER
FLEX PIPE
INNER
FLEX PIPE
OUTER
FLEX PIPE