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A nice letter

Henry Member Posts: 988
edited January 2019 in THE MAIN WALL
I donated my collection of early 20th century books that have helped me solve many a problem on old systems. The next generation can now access theses books and not become part changers or "I will try this, I think that this will work"!

FredIronmanratioErin Holohan HaskellCanuckerrick in AlaskaJean-David Beyer


  • hot_rod
    hot_rod Member Posts: 15,029
    A nice timeless gift, good on ya!
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    Henrydelta T
  • Henry
    Henry Member Posts: 988
    Could you forward me the article on dirtmag by email or pm?
  • Erin Holohan Haskell
    Erin Holohan Haskell Member, Moderator, Administrator Posts: 1,698
    Thank you, @Henry, for paying it forward to the next generation. That's so nice of you.
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 15,431
    @Henry Thanks! You generosity will live on for centuries.

    Retired and loving it.
  • Henry
    Henry Member Posts: 988
    The books that I have read several times in over 43 years have also taught me about one pipe gravity hot water and one pipe steam vacuum assisted among other things.
  • Jean-David Beyer
    Jean-David Beyer Member Posts: 2,666
    one pipe gravity hot water

  • Henry
    Henry Member Posts: 988
    One pipe gravity feeds to the top of the building. Then has down feed reverse riser. To feed a radiator, it has two Y fittings with one feeding and the other removing water for a radiator. The Northern Telecom building which was 11 stories tall used this system here. It had a separate building for the large boilers which I don't remember the number. I do remember that they replaced the boilers for copper fin and put pumps. It was a $2million screw up. I consulted on having the boiler room on the roof to use the existing horizontal distribution to the reverse risers. That worked. BTW multiple condensing boilers were used with outdoor reset which was able to micromanage the heat load.