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disappearing water

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JeffreyGreene
JeffreyGreene Member Posts: 1
in Radiant Heating
I have a client with a Quietside dual purpose boiler. He loses water pressure at a low rate (a cup a day or so). I tried isolating each manifold and was surprised to find I lost pressure in the main system while the manifolds held. Also pressure held all summer while the system was not in use. The only explanation I can come up with is water leaking through the heat exchanger and out the condensate when the boiler is firing. Has any one else ever heard of this?

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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 20,177
    It's probably an expansion tank issue. You may not be loosing water but don't have a cushion. Why not disconnect the boiler and pressure test it to be sure?

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