I'm currently modeling a midrise office building with water cooled VAV DX systems (one per floor).? These have between three and four compressors that stage on as the building loads.? I see input for stages in the PVVT system section but then parallel flow fan powered boxes are not an optional selection.?
Is there a way to use a step function in the DX performance curves?? Or am I out of options?
Thanks,
Dug
