Hi, I have a 28x36 shop. I had a 2.5 ton system installed. New trane air handler, used condenser. Heres the rub, the old Bryant condenser was my father in laws, he added on to the house,blah blah blah, needed to upgrade. The installer who swapped them out was not the same one who installed my system. The lineset connections on Bryant are flared, so he brazed them while not hooked up (he explained later) I get home from work just before he is going to charge the lines and startup. He has a vac pump hooked up, opens a valve and says "Oh, theres juice in here" He then told me he wished he knew that in advance. He then closed them, put the gauges on, turned on the power, opened the valves, added some "juice" and left. The system cools seems to work fine, but I'm a little worried that a step or two was left out. I'd like to be a little informed before I go shooting my mouth off. Advice?