Ok laying out my plumbing and the directions on the spirovent show that even though im using a mixing valve the spirovent is on the supply side with the expansion tank on the return before the pump.
Is this right? I thought the exp. tank was to hook to the bottom of the spirovent both on the supply even though my pump is on the return do to mixing valve.
Is this right? I thought the exp. tank was to hook to the bottom of the spirovent both on the supply even though my pump is on the return do to mixing valve.