53D0419
VENT INSTALLATION
4. Apply a bead of non-hardening mastic around the
outside edge of vent cap. Position the vent cap in the
center of hole on the exterior wall with the word “UP”
on the vent cap facing up. Insure proper clearance of
1" to combustibles is maintained to the flue. Attach the
vent cap with four wood screws supplied.
Figure 22
REAR WALL VENT INSTALLATION
(continued
)
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T
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vent termination
Deflecting
Shield
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Figure 22 -
Installing Horizontal Termination
Vent Cap
Wood Screw
Apply Mastic to All
Four Sides
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Horizontal vent pipe
Figure 24 -
Connect Vent Cap with Horizontal Vent Pipe
Interior Wall
Surface
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
For vinyl siding, stucco or wood exterior, use vinyl sidingstandoffs between vent cap and exterior
wall. The vinyl siding standoff prevents excessive heat from melting the vinyl siding material. Bolt the
vent cap to the standoff. Apply non-hardening mastic around outside edge of the standoff instead of
the vent cap assembly. Use wood screws provided to attach the standoff.
Figure 23
5. Slide the firestop over the vent pipe before connecting the horizontal run to the vent cap.
Figure
24
6. Insert vent pipe into the horizontal termination. The pipe overlap should be a minimum of 1
1
/
4
".
Secure all vent connections with screws provided.
7. Slide the firestop against the interior wall surface and attach with screws.
Figure 24
W
ARNING
Do not recess vent
termination into any wall.
This will cause a fire hazard.
NOTE: Replace the wood screws with appropriate
fasteners for stucco, brick, concrete, or other types
of siding.
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vinyl siding standoff
Figure 23 -
Install Simpson Vinyl Siding Standoff and
Termination
Apply Mastic
to All Four
Sides
Cut Vinyl Siding Away to
Fit Standoff
Wood Screw
Vent Cap
Bolt
Nut
Standoff
Defecting Shield
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