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circulation pump recommendation

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rumn8r
rumn8r Member Posts: 105
in Radiant Heating

I need a recommendation to replace 20 year old Grundfos UP 26-99 F circulation pump in a 16 valve hydronic in floor heating system. Thanks!

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  • hot_rod
    hot_rod Member Posts: 26,594

    If it has zone valves or zone actuators, look at a delta P circ.

    I've had excellent luck with the Grundfos Alpha series. Alpha 26-99 in you case. Assuming the pump you have now is sized correctly.

    https://www.facebook.com/watch/?v=2111692822522929

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    GGross

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