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steam boiler control

Tom_40Tom_40 Member Posts: 9
Does anybody know of a control that can operate a single steam boiler in a building with 12 apartments and has one thermostat. I am looking to modulate operation by the outdoor air temperature

Comments

  • RayWohlfarthRayWohlfarth Member Posts: 849
    @Tom_40 I like the Tekmar controls. they are easy to set up and reliable
    Ray Wohlfarth
    Boiler Lessons
    Click here to take Ray's class.
    Click here to buy Ray's books.
  • Jamie HallJamie Hall Member Posts: 13,471
    Cold you be a little more specific? Are you looking to control cycle timing? How long it is on vs. how long it is off? Presumably independent of the inside thermostat? And, presumably, without overriding the boiler's own pressure controls?
    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
  • Tom_40Tom_40 Member Posts: 9
    The inside thermostat will be abandoned. The boiler operation will be on a 1 hour cycle, with operation time calculated on outside air temperature. The colder is becomes, the longer the on time will be.
  • SteamheadSteamhead Member Posts: 14,004
    edited September 2019
    Tekmar 279. Make sure the "steam established" sensor gets put in the right place.
    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
  • HVACNUTHVACNUT Member Posts: 3,524
    Shouldn't there still be a centrally located thermostat or sensor even with ODR on a steamer?
  • KC_JonesKC_Jones Member Posts: 4,424
    The way the ecoSteam is set up, the thermostat does call for heat, but is essentially a high limit. I set my thermostat at 72, the ecoSteam at 70. The thermostat usually only stops it when it's above 35-40 or so.

    I don't know how any of the other systems work.

    Before the OP asks, ecoSteam never really made it to market, only a few of us have it and there wasn't enough interest to keep it going. For what I paid it's an awesome system, can't talk price, but it's a lot cheaper than some of the other similar products on the market.
    2014 Weil Mclain EG-40
    EcoSteam ES-20 Advanced Boiler Control
    Boiler pictures updated 2/21/15
    https://www.facebook.com/media/set/?set=a.10202744301871904.1073741828.1330391881&type=1&l=c34ad6ee78
  • SteamheadSteamhead Member Posts: 14,004
    HVACNUT said:

    Shouldn't there still be a centrally located thermostat or sensor even with ODR on a steamer?

    Not necessarily. If you set the 279 up correctly, it can operate solely from outdoor temperature.
    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
    HVACNUT
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 7,330
    Tekmar or Heat Timer. TekMar works well. Heat Timer is more $$$$$
  • Tom_40Tom_40 Member Posts: 9
    Ray, Thank you very much. The Tekmar 279 steam control fits my needs perfectly.
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