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  1. #1
    Join Date
    Feb 2005
    Location
    Richmond
    Posts
    480

    Old Johnson Controls Pneumatics

    Over the summer, and friend and I were surveying a sound system, and I thought these old HVAC controls looked cool, so I took a few photos for you guys.

    Here are two of the AHU's that they control:





    One of the control panels:



    Inside one of the panels:



    Motor Controls/Disconnects:


  2. #2
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,414
    The more I have to deal with electronic controls, the more I love pneumatics.

    sweet pictures
    "If you call that hard work, a koala’s life would look heroic."

  3. #3
    Join Date
    Aug 2000
    Location
    USA
    Posts
    4,987
    The control panel looks pristine. Usually they look like spagetti from people hacking them up. Nice pics.
    Your poor planning does not constitute an emergency on my part!!!!

  4. #4
    WOW, I have not seen a pneumatic panel that nicely maintained in 20 years.

  5. #5
    Join Date
    Feb 2005
    Location
    Richmond
    Posts
    480
    I'm glad you guys like the pics
    This is the only building High School in Loudoun County, VA that still has working pneumatic controls. I have no idea how they interface it with the EMS system. Oldest school building in the county too. I have seen the original, 1962 Blueprints for the 2nd oldest high school, and they used to have pneumatics. But it is now all electronic, Andover DDC.

  6. #6
    Join Date
    May 2004
    Posts
    1,308
    I take care of two buildings that use Pneumatics. It's a true story, that after many years of many techs fixing untimely problems, can cause the panels to look like crapsoda.

    The further I delve into pneumatics, to more I appreciate their simplicity.
    Teach the apprentices right... and learn from their questions and ideas.

  7. #7
    Just noticed ....With the exeption of that filter that looks a little beyond done.

  8. #8
    Join Date
    Nov 2001
    Location
    Seattle, WA
    Posts
    7,749
    Quote Originally Posted by york_hvac View Post
    I'm glad you guys like the pics
    This is the only building High School in Loudoun County, VA that still has working pneumatic controls. I have no idea how they interface it with the EMS system. Oldest school building in the county too. I have seen the original, 1962 Blueprints for the 2nd oldest high school, and they used to have pneumatics. But it is now all electronic, Andover DDC.
    Those controls aren't as old as they could be. There are plenty of pneumatics that go back earlier cause I use to design and sell systems for that area in the early 60's.

    One of the last I did was a school near the mountains and the panel board that I designed had to be painted pink! We had to bring it in the shop, load it in my car and I had to drive it to the job site for installation.

    So if you see a pink control panel mounted inside a gym, well that was me. Also look down on the bottom right hand side of the old control diagrams where the drafting initials are and if you see GEC, that's me also.

    The last high school I did was near Mclean, VA and it was purely high tech, for the 70's anyway. I think it was Woodrow Wilson and it was just on the inside of 395.

    Thanks for the pictures. They take me back to when workmanship had a meaning.
    "The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
    - Alexis de Toqueville, 1835

  9. #9
    Join Date
    Feb 2005
    Location
    Richmond
    Posts
    480
    Wow, thats cool DeltaT! I remember you told me you used to work in the Northern Virginia area when I posted something about Lake Braddock Secondary. Did you ever do any work for that school? Ever heard of Loudoun Valley HS?
    I'll have to take a look at those drawings now I have actually become really good friends with our building engineer, and he has all of the original documentation for the school on file, really neat stuff to look at and read.

  10. #10
    Join Date
    Nov 2001
    Location
    Seattle, WA
    Posts
    7,749
    Quote Originally Posted by york_hvac View Post
    Wow, thats cool DeltaT! I remember you told me you used to work in the Northern Virginia area when I posted something about Lake Braddock Secondary. Did you ever do any work for that school? Ever heard of Loudoun Valley HS?
    I'll have to take a look at those drawings now I have actually become really good friends with our building engineer, and he has all of the original documentation for the school on file, really neat stuff to look at and read.
    Way too many buildings/schools to remember and way too long ago! I remember that ASHRE classified three types of school unit ventilators..is what they called them back then -- and I sure did my share.

    I originally worked for Johnson Service Co. at 900 N. Stafford St. in Arlington, VA as an application engineer. There we did our own drafting of control diagrams.

    Then in the 70's I worked for Honeywell in Va., DC & Md or all sorts of stuff including the sewage treatment plant on the Potomac. Now that was a job to hold your nose on!

    Yep, look down at the initials of the draftsman and if it shows GEC, that is me!
    "The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
    - Alexis de Toqueville, 1835

  11. #11
    Join Date
    Jul 2007
    Location
    Northern Virginia
    Posts
    456
    Quote Originally Posted by york_hvac View Post
    Wow, thats cool DeltaT! I remember you told me you used to work in the Northern Virginia area when I posted something about Lake Braddock Secondary. Did you ever do any work for that school? Ever heard of Loudoun Valley HS?
    I'll have to take a look at those drawings now I have actually become really good friends with our building engineer, and he has all of the original documentation for the school on file, really neat stuff to look at and read.
    I do work in the Northern Virginia Area currently. I am a building engineer for three buildings in Fairfax.

  12. #12
    Join Date
    Apr 2005
    Location
    Tampa, Florida
    Posts
    1,634
    Quote Originally Posted by DeltaT View Post
    Way too many buildings/schools to remember and way too long ago! I remember that ASHRE classified three types of school unit ventilators.
    They're still called unit ventilators today and yes they still sell those damn things too. My hatred of them comes from my old high school days. By the time I got to my HS, the HVAC system was 30 years old and had seen better days. Typical gov't thinking throughout. They had done some additions but never bothered to increase chiller capacity. Nor were they fond of maintenance. So after 30 years the unit ventilators were only good for removing sensible heat and removed practically no latent, and did so as noisily as possible. Water routinely condensed on the concrete walls & floors of the place. Nasty. The pneumatic system was shot, of course. Rather than repair the pneumatics, the maintenance crews has installed toggle switches to the blowers. You'd wiggle a pencil or pair of scissors through a bent part of the grille and turn it on/off as needed. Human thermostats.

    Nice to see pictures of how the pneumatics were supposed to look (and work). Those disconnects + greenfield make me think the system was redone at some point.

  13. #13
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,832
    you think that is old??????????????????????????????????
    that is a clean panel, but I work with these panels every single day!!!!!!!!!!!!
    t-9000 night setback, t-5800 receiver controllers.
    epv,pev, reversing relays,
    i have more of that than ddc stuff.

    st65
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

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