Quote Originally Posted by motoguy128 View Post
Seems like this would apply if the make-up air is being suppled directly at the point where the exhaust is occuring and that the exhaust is for the purpose of removing heat and fumes to improve IAQ. It seems to me that you've met the intent of the rule.

Especially since it's intended for intermittent use and a specific application. The impact on the occupied space with this design it seems to me would be minimal.
Operating time : 20 minutes 100 times a year.