Quote Originally Posted by mas985 View Post
I think you are misunderstanding what they are saying. The installer just needs to put in a pipe reduction. It doesn't really "restrict" anything very much. It doesn't cause any problems and it is nothing to be concerned about.
Below is the note from the Pentair Intelliflo VS manual I was referring to - it was pump speed restricted based on flow rate attainable with installed piping, etc.

"A service professional must set the Maximum Speed of the pump to not exceed the maximum flow rate of the system on which it will operate. The Maximum Flow rate setting should be set so the system never operates at or above 25” of Hg vacuum."

To your point, it may not make a difference in my case, but this is what I was going off of.

Joe