Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |  |
As of v8.8 (Sep 2017) EnergyPlus supports more than one airloop serving the same zone. So you can have one AirloopHVAC for the outdoor air, and another for the fan coil unit.
I don't know if OpenStudio supports this yet. If not, I would keep the AirLoopHVAC that you have for the FCU and then use one ZoneHVAC:OutdoorAirUnit per zone to supply the outdoor air to each zone.
