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Vacuum pumps and common sense

HeatingHelpHeatingHelp Posts: 247
edited June 2017 in THE MAIN WALL
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Vacuum pumps and common sense

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Comments

  • SteamguySteamguy Member Posts: 1
    We did a local school in the Boston area with several buildings and a central plant. Traps and vacuum pumps had been neglected for years. After re trapping and installing new lobe style vacuum condensate units, we were able to drop the boiler pressure to 2 PSI and pull 8"Hg of vacuum. Condensate temps were approx 150-160 deg, F, fuel savings were incredible and the buildings are more comfortable then they have been for a long time. This system has been running great now for 10+ years and the school has never been happier.
  • jumperjumper Member Posts: 1,311
    An issue in the olden days was motor starters.
    Do they last longer now?
  • DCampbellDCampbell Member Posts: 2
    Anyone have information on converting a pre-war, low pressure 2 pipe steam system (15 story residential) to include a vacuum pump (return line) system? My understanding is you don't monkey with the physics and original design of the system and one is asking for trouble. Comments? Where to look to find out more? Thanks!
  • PumpguyPumpguy Member Posts: 354
    @DCampbell, I should be able to help you with this, but need more information.
    Feel free to call me anytime so we can discuss the details. Phone # is 1-888 853 9963. I will do all I can to help you.
    Specializing in vacuum pumps for steam heating systems, especially older Nash Jennings units. We build new ones too!



    Now offering Tunstall air vent valves for steam and hot water hydronic heating systems.






    Please visit our website www.nashjenningspumps.com for more information
  • jumperjumper Member Posts: 1,311
    DCampbell said:

    Anyone have information on converting a pre-war, low pressure 2 pipe steam system (15 story residential) to include a vacuum pump (return line) system? My understanding is you don't monkey with the physics and original design of the system and one is asking for trouble. Comments? Where to look to find out more? Thanks!

    What's there now? How satisfactory is situation presently?
  • retiredguyretiredguy Member Posts: 6
    I loved those old vacuum return systems that most people did not understand. I think I retired too soon. Big boilers and big steam systems were my dream.
  • Dale_3Dale_3 Member Posts: 48
    We have a pump almost identical to the one pictured in one of our buildings. Only one pump works and only to pump. Every time I walk in the room I'm reminded of how dumb we have been in watching the system deteriate only because we didn't understand how it was supposed to work. Thanks to this site and Dan's books I think I'm the first person in many years that even begins to understand. Thanks @DanHolohan
  • DanHolohanDanHolohan Member, Moderator, Administrator Posts: 14,621
    Thanks for your kind words, Dale.
    Retired and loving it.
  • jumperjumper Member Posts: 1,311

    I loved those old vacuum return systems that most people did not understand. I think I retired too soon. Big boilers and big steam systems were my dream.

    I lived your dream sometimes; but after those systems were mutilated the dream was funny only afterwards.

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