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Indirect tank mixing valve problem?

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Big Ed_3
Big Ed_3 Member Posts: 170
in THE MAIN WALL
........ you found the paper work . :)


Strange things happen with tee's ..

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  • radioconnection_2
    radioconnection_2 Member Posts: 70
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    Indirect Tank antiscald valve problem?

    I'm using an Amtrol indirect tank with an anti-scald mixing valve set for 120 degrees. Today I noticed something weird! When the shower is being used the hot water from the valve appears to be flowing back through the anti-scald valve towards the cold water port on the DHW tank. I believe the shower control has an anti-scald valve built in. Cold water for the shower and the anti-scald valve come from different pipes. The faucets in the house appear to draw cold water through the anti-scald valve to temper the temperature. Do I need to install a check valve or two to stop this backflow? I'm having trouble visualizing why it happens.
  • radioconnection_2
    radioconnection_2 Member Posts: 70
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    figured it out.. never mind...

    Never mind.. Need a check valve on the cold water inlet port on the anti-scald mixing valve.

    Pete
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