Form 43343320
Dec 2017 -47-
In multiple heater applications, the combustion air intake may be ducted individually or common ducted in the
same configuration as shown for venting in Section 16.0). For combustion air intake duct sizing, please refer to
the Vent Sizing Table and use the diameter indicated, based on the number of heaters per duct.
All vent terminations and Combustion Air Intake Terminations must
be at least 6ā higher than anticipated snow depth.
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