27
Heatilator • NDV30-IFT, NDV33-IFT, NDV36-IFT, NDV36-IFT-NVR, NDV42-IFT Installation Manual • 2620-980 Rev. C • 8/20
Three Elbows
Maximum horizontal run (
H
TOTAL
)
is 100% of
vertical, but cannot exceed 26 ft (7.92 m).
H
1
H
2
V
1
+ V
2
6 ft (1.83 m) min.
60 ft (18.29 m) max.
V
2
V
1
Figure 4.20
Top Vent - Vertical Termination
(continued)