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111986-01F
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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 19, page 14). When-
ever 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 fram
-
ing with roofing nails. Be sure roofing
material overlaps the top edge of the
flashing as shown in Figure 19, page 14.
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 7 on page7
VENTING INSTALLATION INSTRUCTIONS
Continued
Vertical Termination Configurations
Figures 21 through 24 show four different
configurations for vertical termination.
Venting with Two 90° Elbows
Vertical (V)
Horizontal (H
1
) +
Horizontal (H
2
)
5' min.
2' max.
6' min.
4' max.
7' min.
6' max.
8' min.
8' max.
20' max.
8' max.
Figure 21 - Vertical Venting
Configuration Using Two 90° Elbows
with Two Horizontal Runs (Vertical
Round High Wind Termination Shown)
Note
: Install restrictor
into inner collar of
fireplace as shown.
45° Elbow
Venting with One 90° Elbow
Vertical (V)
Horizontal (H)
5' min.
2' max.
6' min.
4' max.
7' min.
6' max.
8' min.
8' max.
20' max.
8' max.
Figure 22 - Vertical Venting
Configuration Using One 90° Elbow
(Vertical Round High Wind Termination
Shown)
45° Elbow
Note
: Install restrictor into
inner collar of fireplace as
shown.
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 sec
-
tion of vent pipe.
Note: If the vent pipe passes through any oc-
cupied areas above the first floor, including
storage spaces and closets, you must enclose
pipe. You may frame and sheetrock the en-
closure 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.
