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Page 24
TOP VENT - VERTICAL TERMINATION
No Elbows
DIMENSIONS
MINIMUM
MAXIMUM
10’
40’
Figure 37
Two Elbows
EXAMPLE VENT RUNS
INITIAL PIPE
LENGTH
A (Vertical)
B (Horizontal)
1’ MINIMUM
7’-6”
17’ MAXIMUM
1’ MINIMUM
8’
20’ MAXIMUM”
1’ MINIMUM
16’
15’ MAXIMUM
1’ MINIMUM
28’
7’-6” MAXIMUM
1’ MINIMUM
32’
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
INITIAL PIPE
LENGTH
A (Vertical)
B (Horizontal)
1’ MINIMUM
7’
11’-6” MAXIMUM
1’ MINIMUM
8’
17’ MAXIMUM
1’ MINIMUM
12’
14’-6” MAXIMUM
1’ MINIMUM
16’
12’ MAXIMUM
1’ MINIMUM
28’
4’-6” MAXIMUM
Figure 39