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116192-01Q
11
(Framing
Detail)
11
1
/
2
"
11
1
/
2
" Inside Framing
11
1
/
2
"
8
1
/
2
"
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
Center of
Hole
VENTING INSTALLATION
Continued
Combustible Exterior Wall:
For vinyl
siding, stucco or wood exteriors, a siding
standoff may be installed between vent
cap and exterior wall. Siding standoff
prevents excessive heat from damaging
siding materials. Siding material must be
cut to accommodate standoff. Bolt vent
cap to standoff. Apply non-hardening
mastic around outside edge of standoff.
Position standoff/cap assembly in center
of 11
1
/
2
" square hole and attach to exte
-
rior wall with wood screws provided (see
Figure 11). Siding standoff must sit flush
against exterior fascia material.
7.
Connecting Vent Cap with Horizontal
Vent Pipe:
Slide wall firestop over vent
pipe before connecting horizontal run to
vent cap (see Figure 12).
Figure 10 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Wood Screw
Figure 11 - Installing Siding Standoff
(Combustible Exterior Wall)
Cut Siding Away to
Fit Standoff
Wood
Screw
Screws
Standoff
Vent
Cap
Apply Mastic to
All Four Sides
Vent Cap
(Horizontal
Termination)
Interior Wall
Surface
Wall
Firestop
Horizontal
Vent Pipe
Figure 12 - Connecting Vent Cap with
Horizontal Vent Pipe
Screw
Figure 9 - Vent Opening Requirements
Vent Cap
Apply
Mastic to All
Four Sides
