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TOP VENT - VERTICAL TERMINATION
No Elbows
DIMENSIONS
MINIMUM
MAXIMUM
10’
40’
Figure 37
Two Elbows
EXAMPLE VENT RUNS
A (Vertical)
INITIAL PIPE
LENGTH
B (Horizontal)
7’-6”
4’-1”
17’ MAXIMUM
8’
4’-7”
20’ MAXIMUM”
16’
12’-7”
15’ MAXIMUM
28’
24’-7”
7’-6” MAXIMUM
32’
28’-7”
5’ MAXIMUM
Figure 38
Three Elbows
Note
: Subtract 3 feet from the total horizontal measurement for
each 90° elbow installed horizontally. Subtract 1-1/2 feet from the
total horizontal measurement for each 45° elbow installed hori-
zontally.
EXAMPLE VENT RUNS
A (Vertical)
INITIAL PIPE
LENGTH
B (Horizontal)
7’
3’-7”
11’-6” MAXIMUM
8’
4’-7”
17’ MAXIMUM
12’
8’-7”
14’-6” MAXIMUM
16’
12’-7”
12’ MAXIMUM
28’
24’-7”
4’-6” MAXIMUM
Figure 39
