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6. Continue to add pipe sections until height
of vent cap meets the minimum building
code requiremen ts described in Fig ure
7 on page 7. Note: You must increase
vent height for steep roof pitches. Nearby
trees, adjoining rooines, steep pitched
roofs and other similar factors may cause
poor draft or down-drafting in high winds.
Increasing vent height may solve this
problem.
7. Twist-lock vent cap onto last section of
vent pipe.
Note: If vent pipe passes through any occu-
pied areas above rst oor, including storage
spaces and closets, you must enclose pipe.
You may frame and sheetrock enclosure with
standard construction material. Make sure
and meet minimum allowable clearances
to combustibles. Do not ll any required air
spaces with insulation.
Vertical Termination Congurations
Figures 21 through 24 show four different
congurations for vertical termination.
VENTING INSTallaTION
Continued
Figure 21 - Vertical Venting
Conguration Using Two 90° Elbows
with Two Horizontal Runs (Vertical
Round High Wind Termination Shown)
Venting with Two 90° Elbows
Horizontal (H1) +
Vertical (V) Horizontal (H2)
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Note: Install
restrictor into
inner collar of
replace as
shown.
45° Elbow
Figure 22 - Vertical Venting Conguration
Using One 90° Elbow (Vertical Round
High Wind Termination Shown)
Venting with Two 90° Elbows
vertical (v1) Horizontal (H)
5' min. 6' max.
6' min. 12' max.
7' min. 18' max.
8' min. 20' max.
Note: Vertical (V1) + Vertical (V2) = 40' max.
Figure 23 - Vertical Venting Conguration
Using Two 90° Elbows (Vertical Round
High Wind Termination Shown)
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.
Note: Install restrictor
into inner collar of
replace as shown.
45° Elbow
Note: Install
restrictor into inner
collar of replace
as shown.
45° Elbow