Enviro G39G, Руководство пользователя

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41
Initial Installation
QUALIFIED INSTALLERS ONLY
Table 7: Minimum ‘H’ for Figure 47.
Roof Pitch
Minimum Height (H)
Feet Meters
Flat to 7/12 1 0.3
Over 7/12 to 8/12 1.5 0.46
Over 8/12 to 9/12 2 0.61
Over 9/12 to 10/12 2.5 0.76
Over 10/12 to 11/12 3.25 0.99
Over 11/12 to 12/12 4 1.22
Over 12/12 to 14/12 5 1.52
Over 14/12 to 16/12
6
1.83
Over 16/12 to 18/12 7 2.13
Over 18/12 to 20/12 7.5 2.29
Over 20/12 to 21/12
8
2.44
Figure 47: Height of Vertical Termination;
Reference Table 7
Figure 49: Use of Wall Straps.
Figure 48: Multi-Story Vent Pipe Installation
NOTES:
1. If an
offset is necessary in the attic to avoid obstructions, it is important to support the vent pipe
every
3’ ( 914 mm)
using wall straps to avoid excessive stress on the elbows.
2. Use 45
°
degree elbows instead of 90
°
degree elbows when ever possible. The 45
°
degree elbow
offers less restriction to the flow of flue gases and intake air.