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Manifold support

Alan (California Radiant) Forbes
Alan (California Radiant) Forbes Member Posts: 4,249
in THE MAIN WALL
When installing slab-on-grade tubing, we usually have to drive some rebar into the ground and strap on some plywood to mount our manifolds. This works fine, but I'm interested in how others do it.
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

  • hot_rod
    hot_rod Member Posts: 23,991
    I had a bunch of Unistrut that I welded pipe onto. Drive them into the ground and mount the manifold nice and solid. Cut off flush with the concrete, after the pour, if a wall is to be build behind the manifold.

    On large shop projects I generally used copper tube type manifolds from Watts, Sioux Chief or Alberta T-Drill. Regular strut clamps fit the tube.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Captain
    Captain Member Posts: 30
    Have you ever tried PEX-Pal's? See the attached pictures.
    Harvey Ramer
  • Harvey Ramer
    Harvey Ramer Member Posts: 2,261
    Pex-Pal is where it's at.
    SWEI
  • Steve Minnich
    Steve Minnich Member Posts: 2,863
    edited June 2016
    My most recent. I was not responsible for the insulation. The builder and the homeowner overruled me.


    Steve Minnich
  • Steve Minnich
    Steve Minnich Member Posts: 2,863
    It was the first time working with that builder. He agreed to use 2" XPS going forward.
    Steve Minnich
  • Paul Pollets
    Paul Pollets Member Posts: 3,665
    The aluminum will react w the concrete pour. Not a good idea. R-10? Not.
    Canucker
  • Steve Minnich
    Steve Minnich Member Posts: 2,863
    I agree. Their one saving grace is that it's 8' below grade.
    Steve Minnich
  • Captain
    Captain Member Posts: 30
    Doing a pour today and took some pictures on Friday. Here we used construction adhesive to glue the PEX-Pal's to the grade beam.

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