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What could cause this to happen

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Mark_72
Mark_72 Posts: 53
in Strictly Steam
Pressure in return on boiler start up. vacuum system. water pushing up in the return's
? Anybody.

Comments

  • nicholas bonham-carter
    nicholas bonham-carter Posts: 8,580
    What are we looking at in those pictures?--NBC
    RobGZman
  • Mark_72
    Mark_72 Posts: 53
    Steam trap on rad . I tried to put up video but was not able to post. water is shooting up in the returns and causing problems. I have never seen this happen . Vacuum system in an apt building. happening throughout the building . building is 13 stories and a down feed system.
  • AlCorelliNY
    AlCorelliNY Posts: 63
    is it double trapped?
    Al Corelli

  • Mark_72
    Mark_72 Posts: 53
    No double trap. two pipe system
  • Abracadabra
    Abracadabra Posts: 1,949
    Mark said:

    Pressure in return on boiler start up. vacuum system. water pushing up in the return's
    ? Anybody.

    Please provide pics of near boiler piping.

  • Steamhead
    Steamhead Posts: 18,834
    Is the vac pump running when this happens?

    Co-Founder, All Steamed Up, Inc.

    Baltimore, MD, USA

  • EBEBRATT-Ed
    EBEBRATT-Ed Posts: 20,947
    Is the overflow and vent on the tank plugged or capped.? Are the returns hot, do you have traps blowing through? Any wet returns or lifts in the vacuum system? Is the vacuum pump pulling a vacuum?
  • Mark_72
    Mark_72 Posts: 53
    This happens when the vac pumps are running. The pumps are venting but I have not ruled them out. Steamhead you were in this building apox. 2006. It's a Shipco pump /boiler feed system.
    I am getting some hg 1/2at start and then I've seen it pull as much as 10hg. I just have not been able to take system down to rebuild vac just yet . that is in my plan as soon as we shut down for the season.
  • Mark_72
    Mark_72 Posts: 53
    I'll post some pic's tomorrow

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