In this excerpt from his Classic Hydronics seminar, Dan Holohan explains how primary-secondary pumping works in a one-pipe hot water heating system. Dan talks about valves, circulators, flow rate, pressure drop, blending temperatures, and more. Want to learn more? Visit heatinghelp.com/. Want to be an expert? Get a copy of Dan Holohan’s book Classic Hydronics: www.amazon.com...
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Primary-Secondary Pumping on a One-Pipe Hot Water Heating System
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