I have an office floor that is conditioned by a Fresh Air handling Unit (100% Outdoor Air) with Heat Recovery and in some enclosed office spaces we have Fan Coil Units (FCU's) that recirculate some air only in the zone they are placed (i.e. no recirculated air is being transferred between zones nor being recirculated at system level). In this scenario how should I treat the AHU to show compliance regarding minimum outdoor air flow rates? In the Minimum Performance Calculator sheet, shall I include this system as a 100% Outdoor system, or should I add it as a Multiple-Zone with secondary recirculation system?
Thank you in advance for your time.