So I set up my Omnilogic control unit and told it which valve was the suction and which was the return. I have a pool and spa on the same pump. Everything things seems to be working correctly. For instance, when I select pool, it turns the suction valve to suck from pool and return to pool, when I select spa it sucks from spa and returns to pool. But what if I want to override it, is there a way to make it suck from spa and return to pool? For instance, if I want to drain the spa into the pool? Or do I just have to manually change the valves to do that?