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Circulator/Zone Valve Layout & Location
My current forced hot water heating system consists of 3 zones each with a circulator on the return and flow-check on the supply. I'm getting ready to tie in a large addition that will have 3 zones. I ran a 3/4" supply and return line(Fostapex) to the addition and plan to put the zone valves in the basement of the addition. Now my questions...... should the circulator be put on the return side like all the other circulators in the house? Should the zone valves go on the supply side or the return? I'm thinking of trying a Grundfos Alpha circulator for this application. Also, I'm hoping to replace the boiler next year and plan on piping it "Pumping Away". Any help/ideas would be appreciated. I've learned a great deal on "The Wall" and enjoy reading it daily.
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