On a variable speed pump, in what situations would I want to use the slower speed and higher speed? Perhaps when solar is circulating? The panels are 100' away from the pump. The outlet options are:
1. 2 "spa jets". There's no spa, just a couple jets with air control on a lounge type step.
2. In floor cleaning system
3. Solar - 100' distance
4. 2 standard wall returns
Also, it it normal for the pump to have to prime every time it starts up? Take about 30 seconds for it to start pumping. There's no check valve on the suction side.
Thank you,
James