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Original Boiler - 1919

Alan (California Radiant) Forbes
Alan (California Radiant) Forbes Member Posts: 4,170
in THE MAIN WALL
and still running.  A "Universal Water Heater", manufactured by the Rotary Manufacturing Company out of Los Angeles, CA.



I've never seen this manufacturer before.  This one serves a 6-unit apartment building in Oakland and we will be replacing it with a Prestige Solo 175.
8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

Two btu per sq ft for degree difference for a slab

Comments

  • Steamhead
    Steamhead Member Posts: 17,215
    Rotary doesn't appear

    in Beacon or Hydronic Rating Handbook- it may have been a small company that only sold boilers in that area. Must be a heck of a burner head in there- did you check it for CO by any chance?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
    Love those old boilers

    Can you read the "notice to fitter" part of the mfg's plate? It's hopefully good advice.-- NBC
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
    edited August 2012
    Whoops

  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
    edited August 2012
    Whoops 1

  • MikeyB
    MikeyB Member Posts: 696
    Nameplate

    It looks like it says "Use not less than  (Size of pipe?) Inch flow & Return"
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,170
    I'll check

    the CO and fine print when I go back.



    Both the supply and return tappings are 2"; one supply and two returns.  There is a return manifold at the bottom of the boiler that looks like a twin ell.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,585
    Nice find!

    I looked in Pape-Swift, the Hydronic Rating Handbook, my files and old books and couldn't find this one. It's remarkable how long it lasted. Thanks for sharing, Alan. 
    Retired and loving it.
This discussion has been closed.

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