Section 1802. Vent Components
1802.1 Draft hoods.
Draft hoods must be located in the same room or space as the combustion air openings for the appliances.
Exception: Draft hoods of saunas may not be located in the same room as the sauna.
1802.2 Vent dampers. {As in IRC}
1802.3 Draft regulators. {As in IRC}