Heatilator • NNXT4236IF, NNXT4236ILF, NNXT3633IF, NNXT3633ILF Installation Manual • 4055-980 Rev. D • 9/15
22
4. Rear Vent - Vertical Termination
One Elbow
Figure 4.18
Two Elbows
Figure 4.19
12 ft (3.66 m) min.
60 ft (18.29 m) max.
0 min.
6 ft (1.83 m) max.
12 ft (3.66 m) min.
60 ft (18.29 m) max.
0 min.
6 ft (1.83 m) max.
Maximum horizontal
run is 100% of
vertical, but cannot
exceed 18 ft (5.49 m)
