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1 pipe steam systems...

with radiators below the water line. I’ve reviewed some jobs via pictures and in this situation. 2 pipe steam radiators are being used with traps. I assume this has to be a pumped wet return setup? I, unfortunately, was not able to see pictures of the boiler room.
Steve Minnich
Minnich Hydronic Consulting & Design, LLC
[email protected]

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 10,290
    yes. no other way to do it. condensate pump or vacuum pump.

    just wondering why your post says "one pipe steam"??
    Steve Minnich
  • Steve Minnich
    Steve Minnich Member Posts: 2,674
    Because the entire building is one pipe except for the apartments in the basement, which are two pipe. I should've been clearer.
    Steve Minnich
    Minnich Hydronic Consulting & Design, LLC
    [email protected]
  • Danny Scully
    Danny Scully Member Posts: 1,329
    Maybe they’re just filled with condensate @Stephen Minnich
    Steve Minnich
  • jumper
    jumper Member Posts: 1,710

    Maybe they’re just filled with condensate @Stephen Minnich

    Or something along similar lines. Higher floors have ample capacity for gravity return. Special strategy for bottom floor.

    Steve Minnich
  • Steve Minnich
    Steve Minnich Member Posts: 2,674
    I’ve been seeing this a lot in 100 year old buildings. In a limited amount of time, I’ve looked into as much as I could but nothing concrete yet. Dead Men aren’t telling any tales.
    Steve Minnich
    Minnich Hydronic Consulting & Design, LLC
    [email protected]
  • AMservices
    AMservices Member Posts: 597
    If it was meant for gravity hot water the radiator would have a bleeder valve off the top rather than a steam trap or air vent on the side.
    Is there a steam trap?
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 10,290
    @AMservices he mentioned traps in his first post.

    I have seen a couple of these "mixed systems". I always looked for clues weather they were "add on's" or original but they usually seemed to work ok