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Gerety Master Venting

superMARKet
superMARKet Member Posts: 87
in THE MAIN WALL
On page 118 of Dan's Lost Art book, he shows Frank Gerety's "master venting" system. This system intrigues me. Are those main vents at the top of each riser (an expensive proposition), or smaller bottom-inlet radiator/convector vents? There doesn't seem to be anything listed in the bibliography, where can I find out more about this approach?

Mark

Comments

  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,600
    Main vents

    Frank would move the top floor radiator over a bit, replacing the radiator supply valve with a tee. He's install the main vent (or vents) in the run of the tee and then use a gate valve and nipples to install the radiator off the bull of the tee.

    His book is out of print, as far as I know.
    Retired and loving it.
  • [Deleted User]
    [Deleted User] Posts: 0
    maybe you should reprint it, Dan

    i'm sure it would sell.
  • Boiler Guy
    Boiler Guy Member Posts: 585
    Dan .. are you back already?

    If so, that was sure a short trip.
    The Lost Art Companion book -- Is it out of print now? What did you do with all the info contained in that book?

    Thanks
    Tim
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,600
    The rights

    were owned by New York City.
    Retired and loving it.
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,600
    It's sitting

    up on my shelf.
    Retired and loving it.
  • [Deleted User]
    [Deleted User] Posts: 0
    well, give the mayor

    a kickback..
  • Mad Dog
    Mad Dog Member Posts: 2,595
    Top of riser venting is not expensive

    especially when everything is accessible. Mad Dog

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Contractor"
  • superMARKet
    superMARKet Member Posts: 87
    Ah, one per riser

    For some reason, I had one per radiator in my mind, and the vents were starting to add up.

    I was thinking of using a top-of-riser vent for the back half of my building, which has a very short counter-flow main with only one active riser take-off. The main and riser are essentially continuous. (The main also isn't dripped to a return, it just falls right into the header immediately above a riser from the boiler. I'm sure that this is the cause of several more problems, but I'm trying to take things one at a time.)

    Talk about accessible, my apartment happens to be at the top of that riser.

    The front half is parallel-flow, and I actually found a paint-covered main vent at the end, half-buried in the ceiling, probably painted shut and if not, certainly broken. It's RIGHT at the end of the main, and there's really no room to move it back because it's snug against a riser takeoff. Maybe I'd go top-of-riser for the front too, and plug or ignore the poorly-located one at the end of the main.

    Mark
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