Napoleon Arlington GDS20NE, Инструкция по установке и эксплуатации

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EN
W415-2345 / B / 12.09.19
13
venting
2.4 defi nitions
2.5 elbow vent length values
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°
* The fi rst 45° and° offset have a zero value and is shown in the formula as -45° and -90° respectively
or -135° when combined
(for 45° exit only).
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
H
O
- offset factor: .03 (total degrees of offset - 135°*) in feet
V
T
- combined vertical vent lengths in feet