[jyl]

So i’m thinking ahead to the vacuum and open valves part, and I’m confused about something.

Only the gas line valve has a service port, so you pull vacuum on only the gas line.

Why is that? Seems to me both the gas and liquid lines are full of air and the water that is in air. Don’t you want all that air out of both the lines, before you open the valves to release refrigerant into the lines?