15
W415-0794 / A / 06.08.10
4.4.2 VERTICAL AIR TERMINAL INSTALLATION
A. Fasten the roof support to the roof using the screws provided. The
roof support is optional. In this case the venting is to be adequately
supported using either an alternate method suitable to the authority
having jurisdiction or the optional roof support.
B. Stretch the inner fl ex pipe to the required length. Slip the
inner fl ex pipe a minimum of 2” over the inner pipe of the air
terminal connector and secure with 3 #8 screws. Seal using
a heavy bead of high temperature sealant W573-0007 (not
supplied).
C. Repeat using the outer fl ex pipe, using a heavy bead of high
temperature sealant W573-0002 (not supplied).
D. Thread the air terminal connector / vent pipe assembly down through the
roof. The air terminal must be positioned vertically and plumb. Attach the
air terminal connector to the roof support, ensuring that the top of the air
terminal is 16” above the highest point that it penetrates the roof.
E. Remove nails from the shingles, above and to the sides of the air
terminal connector. Place the fl ashing over the air terminal connector
leaving a min. 3/4” of the air terminal connector showing above the
top of the fl ashing. Slide the fl ashing underneath the sides and upper
edge of the shingles. Ensure that the air terminal connector is properly
centred within the fl ashing, giving a 3/4” margin all around. Fasten to
the roof. Do not nail through the lower portion of the fl ashing. Make
weather-tight by sealing with caulking. Where possible, cover the sides
and top edges of the fl ashing with roofi ng material.
F. Aligning the seams of the terminal and air terminal connector, place the
terminal over the air terminal connector making sure the vent pipe goes
into the hole in the terminal. Secure with the three screws provided.
G. Apply a heavy bead of weatherproof caulking 2” above the fl ashing.
Install the storm collar around the air terminal and slide down to the
caulking. Tighten to ensure that a weather-tight seal between the air
terminal and the collar is achieved.
H. If more vent pipe needs to be used to reach the appliance see “HORIZONTAL AIR
TERMINAL INSTALLATION” section.
24.3
ROOF SUPPORT
INNER FLEX PIPE
INNER PIPE
HIGH
TEMPERATURE
SEALANT
AIR
TERMINAL
CONNECTOR
OUTER FLEX PIPE
STORM
COLLAR
FLASHING
CAULKING
WEATHER
SEALANT
2”
AIR INLET
BASE
MAINTAIN A MINIMUM 2” SPACE BETWEEN THE AIR INLET BASE AND THE STORM COLLAR.
!
WARNING
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