I have been trying to find out what the approximate heater head loss will be for our pool build and have not been able to find good numbers anywhere.
It is a Pentair Mastertemp 400 - I guess very common heater these days....
A Pentair support guy told me it would about 13 ft of head at 30 gpm just for the heater
He also said the head loss would be 14 ft of head @ 50 gpm. That sounds very strange to me
Based on mas985 estimate and other trustworthy information, I had expected the head loss over the entire system to be <6 ft of head @ 30 gpm.
I am getting a manual bypass over the heater which certainly seems like a good idea if it truly has 13 ft of head @ 30 gpm....
Does anybody have better data?