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Oh Where Oh Where Can My SpiroVent Go?
Just finding out I should have installed more air elimination than the Uponor and Caleffi drawings showed. So I am coming to the Wall for help.
I am pumping out of a buffer tank to a 1 inch manifold feeding 4 circuits of radiant. The 1" supply comes off the hot port on the top of the tank and connects to the inlet side of a TACO DT pump. Then each of the four circuits tees upwards to their respective floor loops. There is a boiler drain in the end of the 1 inch header.
Each circuit then returns to a 1 inch return header which then is piped tot he cold port on top of the tank. There is also a boiler drain at the end of the return header.
In addition to the boiler drains at the end of each header, I have ball valves on each circuit. In spite of my best efforts, I still hear air. So I want to install a SprioVent in the header. Uponor school tells me it should be at the zero pressure point in the system, i.e. between the hot port on top of the heater and the circulator pump inlet.
I also read there should be 6 pipe diameters between the air eliminator and elbows. Is that the same rule for the pump inlet?