Exhaust fans that are part of a mechanical smoke removal system shall be rated for operation at 221°F (105°C). Exhaust fan motors shall be located outside of the exhaust fan air stream.
Share URL
Copy and paste the link below into emails, chats or browsers.
Clearance from the duct or the exhaustfan to the interior surface of enclosures of combustible
construction shall be not less than 18 inches (457 mm ...
be lined or
constructed of such material. Where the size and hardness of
materials passing through a fan are capable of producing a
spark, both the fan ...