W415-2350 / 10.28.19
EN
14
installation
3.3.1 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 nsihed wall
surface. Slip the vent pipe a minimum of 2" (51mm) over the
inner sleeve of the air terminal and secure with 3#8 screws.
Apply a heavy bead of the Mill Pac sealant (W573-0007)
(not supplied).
B. Using the outer fl ex pipe, slide over the outer combustion air sleeve
of the air terminal and secure the 3#8 screws. Seal using Red RTV
Silicone (W573-0002) (not supplied).
C. Insert the vent pipes through thee fi restop maintaining the required
clearances to combustibles. Holding the sir 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,
cople them together as illustrated. The vent system must be
supported approximately every 3 feet (0.9m) for both vertical and
horizontal runs. Use noncombustible strapping to maintain the
minimum clearance to combustibles.
I
NN
ER
F
L
E
X
P
IPE
1
1
/2” (38.1mm)
OVERLAP
HIGH
TEMPERATURE
SEALANT
EXTERIOR
WALL
CAULKING
OUTER FLEX
PIPE
#10 X 2”
SCREWS
Hi-Temp Sealant
Screws
Inner Coupler
Outer Coupler
Outer Flex
Pipe
Inner Flex
Pipe
Outer Flex
Pipe
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