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radiant ultra-fin

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Bob Gagnon plumbing and heating
Bob Gagnon plumbing and heating Member Posts: 1,361
in THE MAIN WALL
has anyone tried this system yet? it is the system where you rivet aluminum fins around the pex in a suspended tube job for more heat output. does anyone see any problems with this method. i'm thinking of using this on my next job. bob
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  • heatboy
    heatboy Member Posts: 1,468
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    You have to love...........

    drilling holes and running 180° through PEX if you use this stuff. I hate doing both, so..............

    hb

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  • John Abbott
    John Abbott Member Posts: 356
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    I love...........

    Drilling holes I have two "super Hawgs" and I run pex at 200 degrees suppyling fin tube on a daily basis so " I ain't afraid"

    John
  • Mike Kraft
    Mike Kraft Member Posts: 406
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    I hoid..............

    that the tube is installed on 3' centers.If you are a believer of suspended this will keep the tubing low enough to avoid flooring nail puncture.The temps will be high as heatboy points out.I also heard it works.End result is numbers do'nt lie.So if designed right it'll work.

    Personally speaking I'm still on the side of the fence that joist bay heating needs the lowest temp.For that matter that is what all RFH needs.Systems like "Ultra-Fin" work when designed correctly(again).BUT.............If floor coverings change extruded plates have a large edge.You can adjust the water temps higher.Once the suspended and staple ups are in and running then your gonna supplement.I would suggest a constant circulation and reset stradegy for this system.

    cheese
  • David Van Wickler
    David Van Wickler Member Posts: 35
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    Playing around with water temperatures - not me

    You have to "thread the needle" or pull the entire loop through each and every hole. NT's.

    Plus rivet the two flashing pieces - the flashing is for convection? Doesn't convection happen all by itself? Natural convection smothers itself fairly quickly in the joist bay (reason for a air gap), hence the need for high water supply temperatures. Also, look at the claimed water supply temperatures versus heat output.

    It is a novel idea!

    I remember a heated argument (no pun) between a leather vested individual and a leather mouthed engineer (guess who). The engineer gave up by throwing his hands in the air and saying, "you've changed thermodynamics by God - your a genius!"

    Got a rock for sale - makes a great pet!

    DVW
  • John Abbott
    John Abbott Member Posts: 356
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    I agree........

    > You have to "thread the needle" or pull the

    > entire loop through each and every hole. NT's.

    > Plus rivet the two flashing pieces - the flashing

    > is for convection? Doesn't convection happen all

    > by itself? Natural convection smothers itself

    > fairly quickly in the joist bay (reason for a air

    > gap), hence the need for high water supply

    > temperatures. Also, look at the claimed water

    > supply temperatures versus heat output.

    >

    > It is

    > a novel idea!

    >

    > I remember a heated argument

    > (no pun) between a leather vested individual and

    > a leather mouthed engineer (guess who). The

    > engineer gave up by throwing his hands in the air

    > and saying, "you've changed thermodynamics by God

    > - your a genius!"

    >

    > Got a rock for sale - makes

    > a great pet!

    >

    > DVW



  • John Abbott
    John Abbott Member Posts: 356
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    I agree.........

    It is not practical to" thread the needle" as you put it but drilling holes or running pex at 180 degrees is not the problem IMO the logistics are.

    John
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