2. Top Vent - Vertical Termination
No Elbow
12 ft (3.66 m) min.
60 ft (18.29 m) max.
Figure 7.7
Two Elbows
12 ft (3.66 m) min. 
60 ft (18.29 m) max.
Maximum horizontal run is 100% of vertical, but cannot exceed 18 ft (5.49 m)
Figure 7.8
Note: If installing a vertical vent/ter- mination off the top of the appliance, the ue restrictor should be used. See Section 14.E. for necessary damper adjustment.
3 ft m (.91
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