14
Installation
XG0225 - 170223
This section applies to installations where the most efficient vent run is
through the roof. Refer to Appendix A - Power Vent locations, to ensure
the planned Power vent location is acceptable. Refer to the table below
for vent run requirements
Figure 6.
Straight Vertical, Top or Rear Vent, Roof mounted power vent.
Figure 6.b
Multi-Elbow, Top or Rear Vent, Roof mounted power vent.
Figure 6.c
Multi-Elbow with downward vent run, Top or Rear Vent, Roof mounted power vent.
D**
D**
Section 3-2: Installing a Roof Mounted Vent System
Vent Configuration
Refer to
Figure
Maximum
Vent Run
(Horizontal
+ Vertical)
Maximum
Elbows†
Straight Vertical Top or
Rear Vent
Figure 6
100 Feet
Six 90° or
equivalent
†
Multi-Elbow Top or
Rear Vent
Figure 6.b
Multi-Elbow with 6'
downward vent run
Top or Rear Vent
Figure 6.c
70 Feet**
† One 90° elbow is equal to two 45° elbows.
** For every additional 1 foot downward vent run subtract 10 feet from
the maximum vent run.
(6' max)
(6' max)
