Heatilator • NNXT4236IF, NNXT4236ILF, NNXT3633IF, NNXT3633ILF Installation Manual • 4055-980 Rev. D • 9/15
18
Figure 4.12
2. Top Vent - Vertical Termination - (continued)
Three Elbows
12 ft (3.66 m) min.
60 ft (18.29 m) max.
Maximum horizontal run is
100% of vertical, but cannot
exceed 17 ft (5.18 m)