Please take a look at my picture and let me know what I need to change. I need to add a few shutoffs and I think I need to get a PRV (static pressure is 80psi but think pressure from city main jumps up to 100-120psi need to get a better gauge to know for sure) The main question I have is about the grundfos up10-16bn5\tlc. I have a 1/2 loop coming back to the hot water heater from the farthest sink. Originally there was only 1 water heater but was plumbed for 2. I added the second heater but left the pump on the first heater like it was. In either setup I just dont feel like it is right. I have seen other style grundfos pumps that attach directly to the hot out of the water heater, or where they come in at the drain valve but never seen a 1/2 line tee into the hot out. The main lines are 1". When testing this it does work but I have not been using the pump b/c I still need to insulate the lines. There is a lot of different things in the pic that really need an explanation but Ill wait to see what responses I get before I go into too much detail. Example: Had to bypass cold water lines from softener, ill explain more if you think this is a major issue in the setup. I know the picture isnt very good but thought it would help me when asking questions.