Hi, just got a heater installed for my pool. However, it was hooked permanently to the filter, and then to the pool.
I was wondering if I should install a 3-way valve or something. We don't plan to use it all the time, in fact we'll have it turned off completely during the summer months, so I was wondering if it's at all needed for the water to circulate through it when it's not in use.
Is it common to put such valve(s)? If yes, do you put two of them (one before and then after the heater, or how?)
Thanks, this forum is great! I learned so much in here!