Should TXV superheat be adjusted if you have an
extra long run (say 120 feet) to the condensor
unit. I would say you need less superheat at
the evap. exit if you have 120 feet run back to
the compressor, and 100 feet of that run is
outdoors. Too much superheat at compressor
can damage the compressor because most compressors
need cool refrigerant to cool their windings.
It seems to me in such circumstances the standard
superheat setting on the TXV should be adjusted
downwards, but to what value?