I just bought my home and am renovating it to be energy efficient (which my pool equip is NOT).
I'd like to remedy this with a new pool pump and I'd like to request assistance with my logic.
From what I've researched, I should size my pump at (30Kgal/8hr)=3750g/hr or 62.5g/min flow to exchange pool once per 8 hrs.
My conservative estimate of THD is >50'. This is based upon 2 skimmers, too many 1.5" non-street elbows, many couplings from prior repairs, not to not to mention my pump & filter rig located ~25' from the pool.
My current 1.5HP AO is killing me ($$$) at 230V/9.3A SF 1.0.
A specs on a 2 speed 1.5 Haywood MAXFLO XL SP2310X152 looks good at high speed but the GPM curve is non-existent at low speed assuming >50'THD. I know lower flow rate will automatically reduce the pressure but the Haywood specs show that the THD needs to be <20' to get any flow rate at all.
To me, that means that it would be a waste of $ to purchase unless I was able to get my THD <20'. Correct?
One more thing. How can I tell if these advertised pumps are PMM or inductive? My assumption is an EE motor would have to be PMM but this type of info is not readily found in the pump mfg literature.
Thank you for any assistance.