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What is the MIN/MAX water temperature of this radiator?

pieIX Member Posts: 8
edited February 2022 in Gas Heating
What is the MIN/MAX water temperature of this radiator?

Some people say 100F other 90F...


  • Jamie Hall
    Jamie Hall Member Posts: 22,100
    Say what? You can run that puppy right up to 212 F (boiling water) if you want to. I wouldn't chill it down much below 35, though... it might freeze.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • pecmsg
    pecmsg Member Posts: 4,385
    There generally rated at 180* F but will operate with any temperature above 32*
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 6,694
    edited February 2022
    Temperatures below 0°C (32°F) may cause separation of some molecules to a point of loosing ability to maintain a proper water/steam pressure seal. (freezing may cause a crack)

    Water temperature above 121°C (250°F) may cause pressure above system normal operation. But the radiator will probably survive the occurrence, however. the relief valve may fail.

    Edward F Young. Retired HVAC ContractorSpecialized in Residential Oil Burner and Hydronics
  • Big Ed_4
    Big Ed_4 Member Posts: 2,523
    edited February 2022
    What a shame using a cast iron element in a convector for hot water ... It covers the best part
    I have enough experience to know , that I dont know it all
  • hot_rod
    hot_rod Member Posts: 20,725
    When the surface temperature is above the ambient temperature where it is located it will transfer heat.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • pieIX
    pieIX Member Posts: 8
    Thank you for your answers.