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BOILER QUESTION

Brad White
Brad White Member Posts: 2,399
in THE MAIN WALL
add up to about 40.5 EDR each and 202.5 in total. At 170F average water temperature that is 30,375 BTUH, well within range for that boiler if my math is right.

What is the space heat loss?
It appears that your radiation and boiler are existing "givens", so the heat loss will establish your highest required water temperature.

Is this controlled with outdoor reset that might limit the HWS temperature?

Are the radiators piped in series or in parallel?
"If you do not know the answer, say, "I do not know the answer", and you will be correct!"



-Ernie White, my Dad

Comments

  • PAUL_83
    PAUL_83 Member Posts: 1
    BOILER SIZE AND HEATING SUNRADE RADIATORS

    HAVE A BUNAHAM 203 GAS BOILER WANT TO HEAT 5 18 SECTION
    SUNRAD RADIATORS, SYSTEM IS PIPED 3/4" PEX DIRECT PIPING,
    BOILER WILL NOT COME UP TO 180 DEG. TRIED BYPASS PIPING.
    TAKES ABOUT 30 MIN. TO GET TO 130 DEG. ALSO ABOUT 100 FT.
    OF PIPING TO AND FROM RADIATORS. WOULD MOMO FLOW PIPING HELP, BIGGER BOILER?

    ANY HELP THANKS
  • kpc_21
    kpc_21 Member Posts: 4
    start again....

    Do a heatloss, then size the radiation and figure the boiler ....
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