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zone pumps / old boiler

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John B_2
John B_2 Member Posts: 46
in THE MAIN WALL
I think my (very old) boiler has three zone pumps on the return right before the boiler, is this common? The boiler appears to have two return inlets on the rear and the outlet is on the top front. I believe it's a National.

Comments

  • Ironman
    Ironman Member Posts: 7,858
    Very Common but...

    Not the best way to do it. Circs. work better on the supply side, down stream from the expansion tank connection.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
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