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Thread: Seconday and Primary pumps
11-06-2012, 06:32 PM #14
times used to be, primary flow was greater than or equal to secondary. these days, it really depends on system design, delta t etc. engineers, and regular joe's like me play with delta t, pipe sizing to do different things. this is even more true on boiler systems running multiple temps on secondary loops. you need to look at the requirements of your primary equipment(chiller), and that of the secondary loop(s).