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Water capacity in C.I. Radiators

doug_10
doug_10 Member Posts: 102
in THE MAIN WALL
I am trying to figure out the number of gallons in a heating system to size the expansion tank. The system has C.I. radiators. How do figure how much each radiator holds? The majority of the system has 5 tube, 7 1/2" wide and in varying heights 17", 22" and 35". If I new how much water was in a section I could multipy that amount by the number of sections. Is this info available anywhere? Thanks!!

Comments

  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928
    Old Rule of Thumb

    IN PINTS! AND PER SQUARE FOOT OF EDR!

    Column rad: 1.5 pints/sqft EDR

    Flue rad: 1.75 pints/sqft EDR

    Thin-fin tube: 0.807 pints/sqft EDR
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