Heatilator • NDV30-IFT, NDV33-IFT, NDV36-IFT, NDV36-IFT-NVR, NDV42-IFT Installation Manual • 2620-980 Rev. C • 8/20
28
Four Elbows
Figure 4.21
H
1
V
2
V
1
Elbows Installed Vertically
H
2
V
3
Maximum horizontal run (H
TOTAL
) is 100% of vertical,
but cannot exceed 23 ft (7.01 m).
V
1
+ V
2
+ V
3
6 ft (1.83 m) min.
60 ft (18.29 m) max.
Top Vent - Vertical Termination
(continued)