In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Another triangle tube install question
Before I contact my installer, I am getting ghost flow on my primary return pipes from my heating zones when the indirect Is getting heat. Should there be a near boiler check valve installed even though I have check valves on all my zones? Also, I had a system bypass on my old heating system, should the valve be open or closed?
Thanks in advance