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R720 & R820 Power Vent Indoor Gas Fireplace
Section 3-3: Installing a Wall Mounted Vent System
This section applies to installations where the shortest possible vent
run is through the wall� 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�
Vent Configuration
Straight Horizontal Top or Rear Vent
Multi-Elbow Top or Rear Vent
Multi-Elbow with 6' downward vent
run Top or Rear Vent
† 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�
Figure 12. Straight Horizontal, Top or Rear Vent, Wall mounted .............
power vent.
Note: Images are shown without screens for clarity purposes�
However, your fireplace should not be operated without proper
installation of screens�
Page 18
Installation
Maximum Vent Run
Refer to Figure
(Horizontal + Vertical)
Figure 12
Figure 12a
Figure 12b
Figure 12a. Multi-Elbow, Top or Rear Vent, Wall mounted power vent.
Maximum Elbows†
100 Feet
equivalent †
70 Feet**
Six 90°
or
XG0772 - 150105�1
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