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Steam boiler two pipe!!!

So here is the cycle that keeps happening. The boiler fires about 20 mins, shuts off on pressure. Boiler fires back up and shuts off 20 mins later on low water, by this time the steam trap is filled with water. Then the steam trap empties back into the boiler and this cycle keeps repeating. Is this normal?!?

Comments

  • Jamie HallJamie Hall Member Posts: 14,836
    Steam trap? What steam trap? Can you describe a bit further? Sounds more like you are referring to a condensate return tank, perhaps?

    Something's not right -- but a lot more detail is needed.

    Among other minor things -- what pressure is the boiler set to turn off at? It should not be more than 1.5 psi.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.
    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • tonyleggeritonyleggeri Member Posts: 3
    The bigger tank fills with condensate. Assuming it is a condensate return tank. My bad. Pressure is set for 1.5 bouler goes off around 2
  • SteamheadSteamhead Member Posts: 14,186
    edited January 2016
    That's a "Return Trap"- Barnes & Jones calls it the Condensator. It is basically a steam-powered pump that returns condensate to the boiler if its pressure gets too high for the condensate to return by gravity.

    The small black device above it is the main air vent for the system- not sure why that 45° elbow is sticking up next to it. Is this vent working? If not, that might be why the system shuts off on pressure.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
  • tonyleggeritonyleggeri Member Posts: 3
    I have personally hurd the air vent working, only seems to work when the "condensator" starts to empty. As for the 45 ° I'm not sure why its there but its plugged. Spoke with barns and Jones. They say that the replacement for that small black device is a "vt1" a newer vent trap model. I don't want to go replacing things that may not help the issue
  • SteamheadSteamhead Member Posts: 14,186
    It should vent all the time, not just when the Return Trap empties. Any good main vent, such as a Gorton #2, could replace it.

    Where are you located?
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc

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