My current setup is a single speed Hayward Super Pump 1.5 HP, 24 Inch Hayward Sand Filter, Offline Chlorinator, Busted Jandy Propane Pool Heater, and Hayward .75 HP booster pump driving a 280 Polaris.
I am replacing the heater with a 250k BTU Pentair HD, and the pump with a Pentair Intelliflo VF. (Both take 2" plumbing) I have been told to change all the plumbing at the pad to 2". My concern is that the multiport valve on top of the sand filter takes 1.5" I know I can reduce the size when going in and out of the multi port valve but not sure if this will cause issues?
Also, going to replace the booster pump with something much quieter, any suggests?