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112127-01C
12
ventinG instaLLation
Continued
Combustible Exterior Wall:
For vinyl
siding, stucco, or wood exteriors, a sid-
ing standoff must be installed between
the vent cap and exterior wall. The siding
standoff prevents excessive heat from
damaging siding materials. Siding materi-
als must be cut to accommodate standoff.
Bolt vent cap to the standoff. Apply non-
hardening mastic around outside edge of
standoff. Position standoff/cap assembly
in the center of the 10" (25.4 cm) square
hole and attach to exterior wall with wood
screws provided (see Figure 15). The
siding standoff must sit flush against the
exterior fascia material.
Figure 14 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Figure 15 - Installing Vinyl Siding
Standoff (Combustible Exterior Wall)
Figure 16 - Connecting Vent Cap with
Horizontal Vent Pipe
Wood Screw
Vent Cap
Cut Vinyl Siding
Away to Fit Standoff
Wood Screw
Bolt
Standoff
Vent
Cap
Apply Mastic to
All Four Sides
Vent Cap (Horizontal
Termination)
Interior Wall Surface
Interior Wall
Firestop
(Combustible
Exterior Wall
Only)
Horizontal
Vent Pipe
Screw
5.
Connecting Vent Cap With Horizontal
Vent Pipe:
Slide interior wall firestop over
vent pipe before connecting horizontal run
to the vent cap (see Figure 16).
Carefully move fireplace with vent assem
-
bly attached toward the wall and insert
vent pipe into the horizontal termination.
The pipe overlap should be a minimum of
1
1
/
4
" (3.2 cm). Fasten all vent pipe con-
nections (except vent cap) with screws
provided.
Slide wall firestop against interior wall
surface and attach with screws provided
(see Figure 16).
Horizontal Termination Configurations
Figures 17 through 19 (starting on page 13)
show different configurations for venting with
horizontal termination. Each figure includes
a chart with vertical minimum/maximum and
horizontal maximum dimensions which must
be met. All horizontal piping runs require 1/4"
rise per 12" of horizontal run.
