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One pipe hydronic heating system

Raymo Member Posts: 7
I live in New York and the house build around 50s. I think I have one pipe system, because seeing a main pipe (11/4) loop on basement ceiling and branch off to upstairs (3 floor above) .Are there have other main pipe in each floor ? Or they just branch off on only one main. These branch go up to third floor?


  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 4,967
    edited January 2021
    You most likely have a diverter tee system. B&G brand called it a Mono-flow Tee system. Are you experiencing any problems?

    Here is a booklet you may find informative

    The info you want to look at begins at the bottom of page 21 on the right column.

    After you review that info, if you have any questions, you can ask away, or you can Private Message me.
    Edward Young Retired HVAC Contractor & HYDRONICIAN Services first oil burner at age 16 P/T trainer for EH-CC.org
  • Jamie Hall
    Jamie Hall Member Posts: 20,462
    Are you sure it's hyrdonic (hot water) and not steam? How about a picture of a typical radiator?
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England