Heatilator NNXT4236IF-B Installation Manual page 30

Rear Vent - Vertical Termination - (continued)
Three Elbows
V =
12 ft. (3.66 m) min.
Total
V
= 60 ft (18.29 m) max.
Total
Figure 4.26
30 Heatilator • NNXT4236IF-B, NNXT4236ILF-B, NNXT3933IF-B, NNXT3933ILF-B Installation Manual • 2384-980 Rev. J • 6/17
H
V
2
2
V
1
H
1
H
0 min.
1 =
H 6 ft (1.83 m) max.
1 =
H Maximum horizontal run is 100% of vertical,
Total =
but can- not exceed 18 ft (5.49 m).