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Robert O'Brien
Robert O'Brien Member Posts: 3,474
Picked this up at a counter in late 80's.



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Ron Jr._3

Comments

  • Steamhead
    Steamhead Member Posts: 15,767
    I remember those! The basic diagram later appeared in Dan's book "Pumping Away".
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • rick in Alaska
    rick in Alaska Member Posts: 1,396
    Mostly because of "Pumping Away", I pipe all my boilers basically that way. I just like the idea of being able to purge the entire system from one point, and to eliminate a lot of extra purge valves.
    Rick
    mattmia2
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,180
    I believe that’s from me.
    Retired and loving it.
    Ron Jr._3Robert O'Brienmattmia2
  • ScottSecor
    ScottSecor Member Posts: 642
    I believe that diagram was from the seminar that we first met Dan Holohan, I'm guessing it was around 1990? As a matter of fact we immediately started piping residential cast iron water boilers with this method following that seminar, thank you Dan!

    The downside, is that we also learned that we could install a little less hwbb on new homes and conversion jobs (electric or hot air to hwbb) and simply raise the temperature of the boiler water to say 190 or 200 degrees. It worked well, but there were some downsides. Fast forward twenty five years, in our home for example, we replaced cast iron boiler with a more efficient condensing model. In order to take full advantage of the "condensing mode," we needed to increase the heat emitter output in some areas of the house to take advantage of the lower operating water temperatures.
  • Steamhead
    Steamhead Member Posts: 15,767

    I believe that’s from me.

    No surprise there!
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,474
    edited August 2019
    > @DanHolohan said:
    > I believe that’s from me.

    That's why I posted it! I might have got it at a presentation you did at Plainview Holiday Inn around 1990. In the glassed in area, not in the usual room. Kevin Rooney spoke also.
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