Greetings,
Regarding IEQp1 and VRP Compliance Calculator there is a question on how to enter an AHU having the following characteristics:

The AHU is a constant volume device; supplying to several rooms, but with one and the same temperature; It is 100% OA unit.

The question is:
Should such AHU be entered as "Single Zone Unit" or as "100% Outside Air".
Thanks.