Thor Forums

[m1noel]

I'm not sure which valves you have, but in general when a valve is on city, you need pressure from outside, like city water. The pump will run, but not pressurize the system. You don't want fill tank either. If you have two valves, one on bypass, and the other only gives you the choices of normal, city, or fill, you would have to use normal on that one to have the pump pick up the anti freeze.