Is it better to bypass the heat pump for the summer thus reducing the number of 90 degree turns from 7 to 2 to gain efficiency or better to keep the water flowing thru the heat pump? In addition, I assume that the heat pump itself causes some extra load on the pump. See picture for how the valves are currently set to bypass the heat pump.
[attachment=0:2y7925qw]P5270351.JPG[/attachment:2y7925qw]
[attachment=0:2y7925qw]P5270351.JPG[/attachment:2y7925qw]