New install on 3.5 ton 12 SEER with 4 ton coil with no expansion valve used. .078 orifice only.
53 psi Suction line
176 psi high line
75 degree ambient temp at condenser
40 degree suction line temp at condenser and at coil
40 degree supply vent temp at all vents
80 degree high line temp
Obviously the suction line pressure and temp are both too low. And the suction line is 40 degrees and sweating the entire length from condenser to coil.
No obvious kinks in suction line. But the pressing notion of a restriction exists due to the low pressure. However, if the restriction were in the suction line, wouldn't there be a temp difference at both sides of the restriction. Yet the temp is consistent the entire length. I'm thinking a restriction in a feeder tube in the coil.
Any input would be appreciated.