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1940ish boiler

Jeff PerryJeff Perry Member Posts: 79
Started a boiler replacement, after waiting a week for asbestos removal. It's a 9 section National hot water boiler. We popped the sections and this is what the return passages looked like. They both looked like this. i wonder just how much flow there was really going on here.


  • nicholas bonham-carternicholas bonham-carter Member Posts: 6,371
    Old boiler deposits

    How could that boiler have accumulated so much debris, even after 70+ years?

    Surely it's a closed system.--NBC
  • JStarJStar Member Posts: 2,668
    edited June 2013

    ...because the maintenance tech comes in every year and flushes the system. Water is like a battery; it needs to be recharged every year, right?
    - Joe Starosielec
    [email protected]
  • Jeff PerryJeff Perry Member Posts: 79

    it's a closed syste. And since the feed was tied into the bottom rear of the boiler it was also plugged solid. As was the drain. It was fun getting the system drained down, I'll tell you that.
  • Jeff PerryJeff Perry Member Posts: 79

    You're kidding, right? This is a frat house. I doubt this thing has been looked at once in the past 10 to 15 years. maybe. And since the fill and drain were also plugged solid we know that even if they were showing up they sure didn't drain anything.
  • Mark EathertonMark Eatherton Member Posts: 5,492
    My guess....

    This neglected red headed step child with freckle and a bad attitude boiler sat down in the boiler room for years, operating "maintenance free".

    The expansion tank became water logged, the relief valve did its thing every fire cycle, the make up valve did its thing every cool down cycle, and the boiler water ways lost...

    If it ain't broke, don't fix it, and whatever you do, don't go looking for trouble... (Maintenance departments credo/modus operandi)

    Did you happen to test if for combustion efficiency prior to taking it off line? I'm guessing it had a higher than normal stack temperature.

    Our jobs will never be in jeopardy...

    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • Jeff PerryJeff Perry Member Posts: 79
    No test

    This boiler hasn't worked in a year. They went through this past winter by using the alcohol heating method. Drink more beer and you'll be fine. So I did not fire it. And to top it off there is a leak somewhere in the crawl that we need to find and see how bad it is before we consider the new boiler.

    Oh, getting up and going to work every day is such a "I wonder what will happen today to make things interesting" life.
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