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Heatilator • HEIR36-IFT, HEIR42-IFT, HEIR50-IFT Installation Manual • 2458-980 Rev. B • 8/17
2. Top Vent - Vertical Termination
No Elbow
V
1
= 50 ft. Max. (15.2 m)
V
1
= 2 ft. Min. (610 mm)
Note:
Exhaust restrictor is permitted
ONLY on 11 ft. minimum vertical runs
with no elbows.
V
1
Figure 4.11