No paint burn, well maybe slightly. Thanks, will evac and charge tomorrow. Rebuilt the TXV's also. This is on 40 ton I -pak. # 2 and #4 compressor are being replaced. CC heaters were shorted on all four compressors.
You only need to put wet rags to isolate the part your soldering. So that you dont burn the building down. You would be a fool not to isolate the part your soldering. Heat transfers from copper, I would rather be safe then sorry.
Make good habits, then you wont have to worry all the time.
HVAC is as hard and troublesome as you make it. Work smarter not harder.