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AugustAir
22-09-2009, 06:23 PM
New Member here and attempting to get help addressing a personal weakness in the HVAC industry.

I have a matched set of evaporator coils and condensing units for a 5T heat pump application that will use R410A refrigerant.

My question is in regard to the correct TXV for the evaporator.

I have been told to use the same valve we have used in standard DX applications ( Sporlan HCAE-5Z ), and I have been told that that we should be using something different for the heatpump application.

Can anyone help with the proper choice and perhaps provide a little education as to the differences if an alternate is required?