I just bought my 1st pool heater for my above ground pool. the heater has 2" pipe my pool is 1-1/2" pipe can I reduce the 2" to use my 1-1/2" and also do I need a water flow meter and a check valve. I hope all this makes sense. lol
100% of my water runs through my heater. It just doesn't get heated 99% of the time.Forgot to ask should I put in a by pass if I don't need the heater or just turn the heater off just let the water run threw the heater?