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Heatilator • NNXT33-IFT, NNXT33L-IFT, NNXT36-IFT, NNXT36L-IFT Installation Manual • 2628-980 Rev. C • 8/20
Rear Vent - Vertical Termination
One Elbow
Figure 4.27
Two Elbows
Figure 4.28
V
Total
=
6 ft (1.83 m) min.
60 ft (18.29 m) max.
H
1
= 0 min.
6 ft (1.83 m) max.
H
1
V
Total
6 ft (1.83 m) min.
60 ft (18.29 m) max.
0 min.
6 ft (1.83 m) max.
Maximum horizontal run (H
Total
)=
100% of vertical,
but cannot exceed 23 ft (7.01 m)
H
2
H
1