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water flowing from rads even though shutoff on supply??

anthony_7
anthony_7 Member Posts: 72
in THE MAIN WALL
I put shutoffs on two zones supply for my rads. The valves are off and I drained the boiler down to 0. I cut rads to remove them and cold water started gushing out until I shut the main off and when I turned it on the water kept coming. And yes I confirmed the Shutoff is off. WHERE IS THE WATER COMING FROM THEN??

Comments

  • Matt Undy
    Matt Undy Member Posts: 256


    What about the return?

    Matt
  • anthony_7
    anthony_7 Member Posts: 72
    no shutoff on return. IS THAT MY PROBLEM?

  • Matt Undy
    Matt Undy Member Posts: 256
    yes

    If you open the return without caping it somehow the presure in the system will push water the other way out through the return.

    Matt
  • anthony_7
    anthony_7 Member Posts: 72
    If I shut off sup and return will that effect the coil at all?

    Meaning I need to kill my rads for a construction project but still need h/w from my coil. Will it be ok to close sup and return line.
  • Matt Undy
    Matt Undy Member Posts: 256


    It depends on how the system is piped, how much of the radiation capacity is removed vs. overall system size and water content.

    Anything else I'm missing everyoen else?

    Probably not a bad idea to call somone in who can understand how the system is piped and controled just to be sure you won't be short cycling the boiler or deadheading a circulator.

    Matt
  • Matt Undy
    Matt Undy Member Posts: 256


    Wait, is this a coil for DHW and your just doing it for the summer? If so it should be fine.

    Matt
This discussion has been closed.

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