Heatilator NNXT4236IF-B Installation Manual page 29

Rear Vent - Vertical Termination
One Elbow
V = 12 ft (3.66 m) min.
Total
Figure 4.24
Two Elbows
12 ft (3.66 m) min.
60 ft (18.29 m) max.
Figure 4.25
Heatilator • NNXT4236IF-B, NNXT4236ILF-B, NNXT3933IF-B, NNXT3933ILF-B Installation Manual • 2384-980 Rev. J • 6/17
57 ft (17.37 m) max.
H
Maximum horizontal run (H
but cannot exceed 23 ft (7.01 m)
V
Total
6 ft (1.83 m) max.
0 min.
6 ft (1.83 m) max.
2
Total
H
1
H = 0 min.
1
H
1
)= 100% of vertical,
29