Very simple problem/question:
I'm going to install a RJ-30 circupool saltwater chlorinator on this pool. It needs about 7"+ cut away from the return pipe to fit in a set of elbows to attach the chlorinator cell. Pictured below is my dilemma. The return pipe is the one going to the top jandy valve, the shorter copper pipe with the dip, then PVC changeover, etc.
The PVC segment of that line is just a hair short of what I likely need (around 6 1/2" - 6" if including room for the elbows). I've never attempted to work with PVC-copper, but plan on it here. First, how is the PVC connecting to the copper judging by this picture? That is 1-1/2" inch line, and my circupool needs 2" elbows pointing up. What is the recommended solution if I need more room? Should I just replace the whole copper pipe with PVC? Is that even possible? (ie, this is a Laars Lite 325k BTU heater vintage 1998 or so) Or does the heater require copper come off of it? Any special fittings required if I go PVC directly off the heater?