8
W415-0619 / B / 03.03.08
TYPICAL VENT INSTALLATIONS - VERTICAL TERMINATION
24”
MIN.
MINIMUM
VERITICAL
4”
MIN.
FIGURE 3a
24”
MIN.
MINIMUM
VERITICAL
MAXIMUM
HORIZONTAL
5 FT MAX.
15 FT
MAX.
4”
MIN.
MAXIMUM
VERTICAL
19 1/2 FT
MAX.
4”
MIN.
MIN
MAX
FIGURE
Allowable 3” vent connections (excluding
fi
replace and air terminal connections)
N/A
2
Rise per foot (recommended)
1/4”
N/A
Rise per foot (allowable)
0”
N/A
Vertical run (when not venting horizontally)
24”
19 1/2 FT
3a, 3c
Horizontal run
4”
5 FT
3a, 3b, 3c
FIGURE 3b
FIGURE 3c
0
1 2 3 4 5 6 7 8 9 10
20
HORIZONTAL VENT RUN PLUS OFFSET IN FEET (
H
T
)
REQUIRED
VERTICAL
RISE IN
FEET (
V
T
)
18
16
14
12
10
8
6
4
2
19.5
15
1.33
See graph to determine the required vertical rise
V
T
for the required
horizontal rise
H
T
.
