Has anyone experience on whether having air speed sensors in both the supply and return ducting of a recirculating variable air speed AHU in combination with damper position data (% open, OA damper as well as recirculation damper) satisfies the credit requirements? Data from these points can be used at any time to calculate the OA flow rate. Or do GBCI reviewers have any kind of objection to this set-up? (Obviously data is to be monitored in a BAS terminal and alarm will be generated should OA intake decrease below minimum requirement).
Thank you in advance,