Hello,

I would like to model a packaged single zone AC with gas furnace that has two stage cooling with using two compressors. The system has an integrated economizer and a constant speed fan.

Is there a way to indicate two compressors in the PSZ system type or am I supposed to use the PVVT system, despite being a single zone system and not having neither a variable speed compressor or fan? And if the PVVT system type is to be used, any advice on configuring the system would be greatly appreciated.

Thanks,

-Jun