How to choose the right RPM of my VSP?

Eric_yang

Well-known member
Jun 6, 2016
54
San Jose
Hello,

I've updated my pool with the Pentair VSP. I'm wondering what is the right RPM for the solar panels. I read that one solar panel needs 3~4 GPM for the best heating efficiency, but how do I know under which RPM my pump can generate 40gpm given there are 10 solar heater panels?

Right now I'm setting the VSP to 2700rpm per pool guy's suggestion. I reduced it to 2400rpm and do not see any obvious change on the water fall. The pump power consumption dropped a lot though.
 

Rocket J Squirrel

Bronze Supporter
Jun 7, 2018
506
Alamo, CA
It depends on your setup. What you need is enough pressure in the system to keep the vacuum relief valves closed. If the flow is too weak they will leak.