righter101
Gold Member
- Joined
- Dec 5, 2009
- Messages
- 604
From 2009 IRC M1503.4 Makeup air required. Exhaust hood systems capable of exhausting in excess of 400 cubic feet per minute (0.19 m3/s) shall be provided with makeup air at a rate approximately equal to the exhaust air rate. Such makeup air systems shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system.
Anyone have ideas on how to apply this to a hood or downdraft to get the automatic control without violating the UL listing by adding wiring or a relay??
How are folks treating this in other jurisdictions?
Thanks.
Anyone have ideas on how to apply this to a hood or downdraft to get the automatic control without violating the UL listing by adding wiring or a relay??
How are folks treating this in other jurisdictions?
Thanks.