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Heat loss on return side of radiant syatem

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enzo
enzo Member Posts: 1
in Radiant Heating
I have a Baxi 310 , running 3 loops of pex radiant off a manifold. Each loop is between 260 and 275 feet. With a Taco 007 circ. My problem is drop i ntemperature on return side is over 50 degrees. The pex is 1/2" in aluminum plates, with foil barrier and 6" fiberglass insulation in each bay. The area below living area is a basement. Why is my temperature drop so great??

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  • Jamie Hall
    Jamie Hall Member Posts: 23,280
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    Low flow. Now you need to find out why...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    EzzyT
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,646
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    Got some pictures of the near boiler piping, manifold etc?
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
  • Zman
    Zman Member Posts: 7,569
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    Do you have a mixing valve on the radiant loop? If so which model?
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    Gordy

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