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Bradfordwhite combicore

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fixin
fixin Member Posts: 1
in Radiant Heating
We have installed these for many years and have had decent success with heating applications. J<strong>ust curious on others experiences with them, pros and cons. Also the old versus the newer design, piping and pumping arrangements.</strong>

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  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,013
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    CombiCor & PowerCor

    All the ones I have installed have failed; typically at the heat exchanger.  Others have had the same experience.  It may be the water, it may be the heat exchanger material, but I don't use them anymore.
    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
  • hot_rod
    hot_rod Member Posts: 22,158
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    The original

    CombiCors were problematic. They had a small diameter composite tube HX. They developed leaks,mainly where the coil came through the tank. They also had high pressure drop when trying to flow the heat side.

    The new version has a large diameter steel coil, lots of surface area and very low pressure drop. I believe it is available with a single or double walled HX Combi 1 or Combi2.



    I'm not sure what year they made the switch. The new version performs well, and should last a long time. I believe that HX coil is used by a few other brands, been around a long time.



    http://www.bradfordwhite.com/products2.asp?id=28&product_id=184

    hr
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
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