I think this is pretty standard plumbing.

A valve controls where the water is coming from pool or spa, and
another valve controls pool or spa return. There is an overflow form
the spa to pool if needed.

I have to isolate the spa circulation and "bring the spa up to temp"
when I want to use it.

Wes

wrote:
Wes wrote:

I need to replace my pool pump...

Specs:

20,000 gal pool
Pool/Spa combo with 4 spa jets

How does one pump do both the pool and the spa, with different temps?

Nick