Ok - so I guess I'm hoping someone can confirm this - I will be looking to model for LEED a commercial kitchen hood and makeup air system.  not sure the details yet - probably a gas fired makeup air unit - but my question is this - do I have to treat this as a separate system under appendix G?  I know I can give it a DOA unit for the proposed but I'm not sure how to handle the Baseline.  Should it be the same?  if not - what system type should it be.  seems to me that this space would fall into both exception b and c under section G3.1.1 which would mean I would need a separate system for this space?  Has anyone else out there done this?  Thanks.