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Old Timers and Dead Men

Alan (California Radiant) Forbes
Alan (California Radiant) Forbes Member Posts: 4,215
in THE MAIN WALL
I just looked at a job this morning where the owners are selling the house and wanted a pro to check it out for the sale. The owner is the daughter of the guy that had the house built and she still had the original plans. He installed the tubing himself.

The design was by Tom Booth, well known in the Bay Area for hydronic design. I've seen plenty of his plans but just noticed how he split his loops in the slab. We don't do that these days because we don't want any connections in concrete and I would be concerned that purging air might be difficult.




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

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,495
    Nice! 1957, got a few miles on it. Is it copper in the slab?
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,215
    Nice! 1957, got a few miles on it. Is it copper in the slab?


    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
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,495
    Old school manifold!!
  • hot_rod
    hot_rod Member Posts: 23,408
    A good year for Chevy also.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,601
    Gosh!
    Retired and loving it.
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,403
    DanHolohan said:

    Gosh!

    A word is worth a thousand pictures!

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    Kybeans403
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,601
    😉
    Retired and loving it.
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,215
    edited March 2021
    Probably 80% efficient, but damn, if overall efficiency included maintenance and repair costs, this might be up there in the nineties, no?

    Just one bedroom and one bathroom with a nice view.




    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
    RomanGK_26986764589

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