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National boiler info

I am replacing a No 1 Series Heat Extractor, oil-fired boiler made by National Radiator Company. It doesn't have BTU input or output ratings, only "sq. ft. water" ratings. Do these convert into BTU/hr?

Comments

  • Danny Scully
    Danny Scully Member Posts: 1,329
    edited December 2018
    None of that matters. You need to do a proper heat loss (if it’s hot water) or an edr survey (if it’s steam).
  • skmillersr
    skmillersr Member Posts: 2
    Thanks
  • Steamhead
    Steamhead Member Posts: 14,837
    Many if not all of those Heat Extractors had asbestos insulation. You'll need a proper asbestos contractor to deal with this.
    All Steamed Up, Inc.
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 10,271
    Water is 150 btu/square foot, steam is 240btu/square foot