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Open and Close venting

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mark_109
mark_109 Member Posts: 3
in THE MAIN WALL
Once my boiler has been running for a while, the vents open again and keep hissing. This is after they have initially closed. What causes this?
I have a one pipe steam system.

Comments

  • xx
    xx Member Posts: 1
    xx

    Thoughts??
  • kevin coppinger_15
    kevin coppinger_15 Member Posts: 35
    the line....

    must have cooled down just enough to allow thw bi-metal vent to open back up. Then the steam hits it again and it closes...kpc
  • Edward A. (Ed) Carey_3
    Edward A. (Ed) Carey_3 Member Posts: 236
    Vents

    When the vents start hissing for the second time, has the burner in the boiler turned off or is it still running?

    When this happens the second time, do they keep hissing constantly, or does it stop after a few seconds or minutes?

    When this happens, does steam actually discharge from the vents into the room, or are they just hissing with no steam discharge?

    Ed Carey
  • mark_110
    mark_110 Member Posts: 2


    1. When they hiss a second time the boiler is still running.
    2. The vents seem to keep hissing.
    3. The vents seem to be hissing with no steam discharge.
    Thanks.......
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