Defi Nitions; Elbow Vent Length Values - Napoleon Knightsbridge GDS60-1N Manuel D'installation

2.5 defi nitions
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 - total of both horizontal vent lengths (Hr) and offsets (Ho) in feet
T
H - combined horizontal vent lengths in feet
R
H - offset factor: .03 (total degrees of offset - 90°*) in feet
O
H - offset factor: .03 (total degrees of offset - 135°*) in feet
O
V - combined vertical vent lengths in feet
T
2.6

elbow vent length values

Feet Inches
1° 0.03 0.5
15° 0.45 6.0
30° 0.9 11.0
45° 1.35 16.0
90°* 2.7 32.0
* 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).
direct venting - model GDS60-1
Millimeters
12.7
152.4
279.4
406.4
812.8
EN
15
W415-1328 / C / 12.06.18