Formula
Measured SH = Suction Line Temp − Sat Temp(P, refrigerant)For piston / fixed-orifice metering. TXV systems charge by subcool, not superheat.
Target superheat
Target superheat
27°F
±5°F is in spec
Measured superheat (optional)

Measured SH = Suction Line Temp − Sat Temp(P, refrigerant)