Hi guys..I hope someone can give me an answer:
Replaced a 4 ton (TCD048 Rooftop) Trane Compressor, which was as well replaced by a Tecumseh like 2 yrs ago.
I installed a NEW (Sealed) Copeland Hermetic 47,000 Btu/h 3PH 230V.
The old compressor's coil was grounded. Compressor burned.
I pulled all the R22 out, and cleaned the system with N2. Installed new compressor. After all solderings, I pulled high Vac for 30 min. Charged and tested, pressures were good. 65LB/240LB 88°F Outdoor.
Inside temp only 10°F bellow Outdoor temp. I get 78°F from any supply register.