Hi, Unmethours,
Is it possible to model more than one VRF indoor units in the same zone? My case is a big laboratory space served by three VRF indoor units with the same outdoor condensing unit. Can I use ZoneHVAC:EquipmentList to add similar TU system? Or should I divide the zone into smaller zones representing an imaginary zone served by each indoor unit and connect all three zones with voids? Which one is best? Since I recently managed to model multiple indoor units and the result showed slight reduction in cooling usage.
Second question, is it possible to link the supply air from secondary outdoor air system (DOAS) into each primary VRF indoor unit's mixer rather than directly blown into the zone? Presumably by defining ZoneHVAC:EquipmentConnections and tweaking OutdoorAir:Mixer? This attempts always produce severe error messages because DOAS' supply node which was initially serving the zone wont connect into VRF's mixer node.
Any help would be greatly appreciated,
Regards,
