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INSTALLATION FOR VERTICAL
TERMINATION
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 26) to avoid
cutting load bearing members. Note:
Pay special attention to these
installation 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 vertical rise of the venting
system and any maximum horizontal
offset limitations. Offsets must fall
within the parameters shown in
Figure 17 .
2. Set the stove in desired location.
Drop a plumb line down from the
ceiling to the position of the burner
system exit flue. 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.
NOTICE: Use rigid pipe only. Flex
venting is not to be used with a
vertical termination.
Flat Ceiling Installation
1. Cut a 10" square hole in the ceiling
using the locating hole as a center
point. The opening should be framed
to 10" x 10"(254mm x 254mm) inside
dimensions, as shown in Figure 27
using framing lumber the same size as
the ceiling joists. If the area above the
ceiling is an insulated ceiling or a
room, nail firestop from the top side.
This prevents loose insulation from
falling into the required clearance
space. Otherwise, install firestop
below the framed hole. The firestop
should be installed with no less than
three nails per side (see Figure 27).
2. Assemble the desired lengths of pipe
and elbows necessary to reach from
the burner system flue up through the
firestop. All connections must be
sealed with high temperature silicone
sealant as specified. Be sure all pipe
and elbow connections are fully twist-
locked (see Figure 20, page 11).
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 10"
x 10" 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 21.
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
26). Whenever possible, use 45°
elbows instead of 90° elbows. The
45° elbow offers less restriction to
the flow of the flue gases and intake
air.
5. Place the flashing over the pipe
section(s) extending through the
roof. Secure the base of the flashing
to the roof and framing with roofing
nails. Be sure roofing material
overlaps the top edge of the flashing
as shown in Figure 26. There must
be a 1" clearance from the vent pipe
to combustible materials.
6. Continue to add pipe sections until
the height of the vent cap meets the
minimum building code
requirements described in Figure 17 .
Note: You must increase vent height
for steep roof pitches. Nearby trees,
adjoining rooflines, steep pitched
roofs, and other similar factors may
cause poor draft or down-drafting in
high winds. Increasing the vent
height may solve this problem.
7. Twist-lock the vent cap onto the last
section of vent pipe and seal outer
pipe connection with high
temperature silicone sealant as
specified .
Note: If the vent pipe passes through any
occupied areas above the first floor,
including storage spaces and closets, you
must enclose pipe. You may frame and
sheetrock the enclosure with standard
construction material. Make sure and
meet the minimum allowable clearances
to combustibles. Do not fill any of the
required air spaces with insulation.
Roof Flashing
Wall Strap
45 Deg.
Elbow
Ceiling Firestop
If area above is not a room, install firestop
above framed hole.
If area above is a room, install firestop
below framed hole.
Figure 26-Offset with Wall Strap and 45
deg Elbows
Figure 27– Installing Firestop
NOTE: Use only Simpson Dura-Vent
or AmeriVent GS venting components
or kits, these types have been tested
and approved specifically for this stove
and burner system.
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