7
W415-0619 / B / 03.03.08
TYPICAL VENT INSTALLATIONS - HORIZONTAL TERMINATION
MIN
MAX FIGURE
Allowable 3” vent connections (excluding
fi
replace and air terminal connections)
N/A
1
Rise per foot (recommended)
1/4”
N/A
Rise per foot (allowable)
0”
N/A
Horizontal run (If vent run does not include vertical rise)
4”
24”
2a
Horizontal run (if vent run includes vertical rise)
4”
7 FT
2b
Vertical run
(* Immediately off the
fi
replace, if 7 FT maximum horizontal run is required)
18”*
7 FT
2b, 2c
FIGURE 2a
4” MIN.
24” MAX.
8”
18”
MAXIMUM
HORIZONTAL
7 FT MAX.
4”
MIN.
8”
4”
MIN.
9 FT
MAX.
MAXIMUM
VERITICAL
FIGURE 2b
FIGURE 2c
0
1 2 3 4 5 6 7 8 9 10
10
9
8
7
6
5
4
3
2
1
1.5
HORIZONTAL VENT RUN PLUS OFFSET IN FEET (
H
T
)
REQUIRED
VERTICAL
RISE IN
FEET (
V
T
)
See graph to determine the required vertical rise
V
T
for the required
horizontal rise
H
T
.
