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EDR for odd cast-iron BASEBOARD heaters?

BTU Member Posts: 14
I never seen these. 12" tall, about 2 3/4" wide. No vents in the cast-iron. Possible hold over from coal-fired boiler in Ware, MA (currently served by Homart oil boiler, by Sears-Roebuck ca. 1953). Would any of yall know an EDR calculation? Is it in a Holohan book somewhere?


  • Steamhead
    Steamhead Member Posts: 16,454
    I think Burnham used to make something like that. IIRC the ratings are in the "Hydronic Rating Handbook" by Tom Byrley- I know I have a copy somewhere..............
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    EBEBRATT-Ed Member Posts: 14,495
    I have never seen those. Maybe they came from Sears with the boiler. Maybe the house came out of the Sears catalog LOl

    Must be an ok boiler, 64 years same as me 53' was a good year
    HVACNUT Member Posts: 5,467
    Where is the air transfer? I don't see any openings.
  • PinkTavo
    PinkTavo Member Posts: 64
    edited February 2017
    My in-laws had those in a house in Ohio. It was built in the early 60's. From what I could tell, strictly radiant. Worked nicely.
  • BTU
    BTU Member Posts: 14
    HVACNUT, exactly my thoughts. No convective currents with these, as opposed to all other baseboard I've come across, CI and fin-tube.

    I did go ahead and use a standard 3.4 sq ft EDR per linear foot of baseboard. Still interested if anyone gets an exact figure on these.
  • HVACNUT said:

    Where is the air transfer? I don't see any openings.

    My thoughts as well.

    Good call Mr. Pink!
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab