16
W415-1516 / A / 10.22.15
EN
3.6 DEFINITIONS
14.1
For the following symbols used in the venting calculations and examples are:
> - greater than
> - equal to or greater than
< - less than
< - equal to or less than
H
T
- total of both horizontal vent lengths (Hr) and offsets (Ho) in feet
H
R
- combined horizontal vent lengths in feet
H
O
- offset factor: .03 (total degrees of offset - 90°*) in feet
V
T
- combined vertical vent lengths in feet
3.7 ELBOW VENT LENGTH VALUES
15.1A
FEET
INCHES MILLIMETERS
1°
0.03
0.5
12.7
15°
0.45
6.0
152.4
30°
0.9
11.0
279.4
45°
1.35
16.0
406.4
90°*
2.7
32.0
812.8
* The
fi
rst 90° offset has a zero value and is shown in the formula as - 90°
Summary of Contents for BCDV36CFNTR
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Page 62: ...62 W415 1516 A 10 22 15 EN 44 1 21 0 NOTES...
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