Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

sizeing radiation

Dan467
Dan467 Member Posts: 11
If i have the edr of a convector suplied with 180 degree water how do i convert it to btu output 0f a boiler? Also sq ft of radiator to btu out put?

Comments

  • Ironman
    Ironman Member Posts: 6,576
    edited June 2011
    Multiply...

    The square footage x 150 for the btu output at 170* average water temp. The boiler will generally have 3 ratings: input; output (input x efficiency); and I+B+R (output x .85). This final number allows for a 15% piping loss. Actual loss may be more or less depending on piping material, length of run, pipe insulation, water temp, etc.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • Dan467
    Dan467 Member Posts: 11
    sizing radiation

    thanks for the sq foot info how about edr?
  • EDR

    At 180 degrees, each EDR equals 170 BTU's.
    Often wrong, never in doubt.
This discussion has been closed.