I'm helping a friend install a new AG pool and I have a few questions. The pool is a 36' round AG that is going to be sunk in the ground. He has the following equipment... Pentair cartridge filter, whisper flow pump, auto pilot SWG, pentair ultra temp heat pump and a intermatic digital timer. My question is how should the heat pump be controlled? I know it has a function that would turn it self on based on temp. I'm confused on how you could use that feature with a SWG.