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VENTING CONFIGURATIONS
The allowable venting configuration is to be 25 equivalent horizontal feet (7.5 m) or less as determined through
the following table:
90 deg elbow
45 deg elbow
Horizontal Pipe
Vertical Pipe
Altitude (in thousands of feet)
Example:
90 deg elbow
45 deg elbow
Horizontal Pipe
Vertical Pipe
Altitude (in thousands of feet)
NOTE:
Horizontal runs, should be minimized (48 in. (1.2m) maximum per section) to prevent the
accumulation of ash. If possible replace horizontal offsets (two 90 degree elbows) with 45 degree
offsets (two 45 deg elbows) to go around building structures.
2020866 REV A
Type of Pipe
Type of Pipe
Qty
Factor (ft)
x
5 (1.5m)
x
3 (0.9m)
x
2 (0.6m)
x
0.5 (0.15m)
x
2.5 (0.8m)
Total
Qty
Factor (ft)
1
x
5
x
3
1
x
2
20
x
0.5
2
x
2.5
Total
Total
Total
5
2
10
5
22
13
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