How would I have the valve set if I want the heater to be included? If the handle is twisted so it is over the top of the "bypass" and the "off" is facing the non-piped side of the valve... There is flow from the filter, the bypass is open, AND the heater is open. How do I close the bypass? Otherwise half the water would go to the pool without being heated? I am obviously not sharp enough to understand how this works. But I do apprey your patience and assistance to get me going.