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Thread: Suction Pressure Control
10-13-2012, 12:10 AM #1
Suction Pressure Control
I have an AAON RTU that I am programming and the specs call for suction pressure control to dehumidify. The unit has a VFD on the fan and a VSD on the compressor for first stage. The compressor also has an unloader. There is no hot gas reheat on this unit and the sequence is calling for humidity control but doesnt specify how to accomplish it. I have never programmed this type of scenario and I was wondering how does the suction pressure sensor factor into dehumidification...along with the vfd and vsd?