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120441-01A12
Vertical Termination Installation
Note: Vertical restrictor must be installed in
all vertical installations.
1. Determine the route your vertical venting
will take. If ceiling joists, roof rafters or
other framing will obstruct the venting
system, consider an offset (see Figure 16)
to avoid cutting load bearing members.
Note: Pay special attention to these instal-
lation instructions for required clearances
(air space) to combustibles when passing
through ceilings, walls, roofs, enclosures,
attic rafters, etc. Do not pack air spaces
with insulation. Also note maximum verti-
cal rise of the venting system and any
maximum horizontal offset limitations.
2. Set the replace in desired location. Drop
a plumb line down from the ceiling to the
position of the replace exit ue. Mark the
center point where the vent will penetrate
the ceiling. Drill a small locating hole at
this point.
Drop a plumb line from the inside of the
roof to the locating hole in the ceiling.
Mark the center point where the vent will
penetrate the roof. Drill a small locating
hole at this point.
Flat Ceiling Installation
1. Cut a 11
1
/
2
" square hole in the ceiling
using the locating hole as a center point.
The opening should be framed to 11
1
/
2
"
x 11
1
/
2
" inside dimensions, as shown in
Figure 8 on page 9 using framing lumber
the same size as the ceiling joists. If the
area above the ceiling is an insulated
ceiling or an attic, nail restop from the
top side. This prevents loose insulation
from falling into the required clearance
space. Of the area above the ceiling
is a living space, install restop below
the framed hole. The restop should be
installed with no less than three nails
per side (see Figure 17).
2. Assemble the desired lengths of pipe
and elbows necessary to reach from the
replace ue up through the restop. Be
sure all pipe and elbow connections are
fully twist-locked (see Figure 7, page 9).
3. Cut a hole in the roof using the locating
hole as a center point. (Cover any exposed
open vent pipes before cutting hole in roof.)
The 11
1
/
2
" x 11
1
/
2
" hole must be measured
on the horizontal; actual length may be
larger depending on the pitch of the roof.
There must be a 1" clearance from the vent
pipe to combustible materials. Frame the
opening as shown in Figure 9, page 9.
4. Connect a section of pipe and extend up
through the hole.
Note: If an offset is needed to avoid
obstructions, you must support the vent
pipe every 3 feet. Use wall straps for this
purpose (see Figure 15, page 11). When-
ever possible, use 45° elbows instead of
90° elbows. The 45° elbow offers less
restriction to the ow of the ue gases.
VENTING INSTALLATION
Continued
Figure 16 - Offset with Wall Strap and 45°
Elbows
45° Elbow
Wall Strap
Roof Flashing
Ceiling Firestop
Figure 17 - Installing Firestop
If area above is a living space, install
restop below framed hole.
If area above is an attic or insulated area,
install restop above framed hole.