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outdoor reset controller

mor
mor Member Posts: 42
I'm trying to improve the heat in a sizable building. A one pipe steam system. There is no indoor thermostat. What controls will cycle the system based on outdoor temperature. [Not merely warm weather shut down]. Thanks - MB

Comments

  • Rod
    Rod Posts: 2,067
    Tekmar 279

    Hi- You might want to take a look at the Tekmar 279

    http://www.tekmarcontrols.com/prod/279.shtml

    Click you way through the "Literature" section as this has the I&O manual which explains in detail how it works.

    - Rod
  • sizeable building controls

    remember that the controller will rely on the heating system to be functioning as it did when new, and cannot make compensations for any deffered maintainance, or areas of delayed arrival of steam.

    i don't know if you have problems or not; however many people think that outdoor reset will overcome other problems.

    the tekmar 279 is capable of having multiple indoor sensors to give it feedback on average inside temperature. i wish the control wiring were wireless, but unfortunately that is not the case.--nbc
  • Take a look at.....

    R&D electronics.  Built beefy and excellent support.  They have a variety of steam boiler controls and are continuing to expand their offerings following new ideas in steam heating.
    The Steam Whisperer (Formerly Boilerpro)

    Chicago's Steam Heating Expert





    Noisy Radiators are a Cry for Help
  • Steamhead
    Steamhead Member Posts: 14,319
    Hey BP

    do they have a website? 
    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
  • jpf321
    jpf321 Member Posts: 1,566
    1-pipe Homeowner - Queens, NYC

    NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

    installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

    Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm
    my NEW system pics | my OLD system pics
  • Dave in QCA
    Dave in QCA Member Posts: 1,764
    Tekmar

    I installed a Tekmar 279 a couple of years ago with very good results.  I also installed a couple of room sensors, which prevent the calculated cycle time from gradually overheating or underheating the building.
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
  • will smith_4
    will smith_4 Member Posts: 259
    Also-

    Outdoor reset and averaging building temp can be incorporated using a variety of manufacturers controls, but you might also consider using temp controls at each individual radiator-wherein a valve can be installed that will give the tenant more distinct control of the heat. Certainly more expensive than just changing a vent, but it gives the tenant control, and can stop them from opening the double hung valve when the system is otherwise out of control-double hung valve being the windows...End of the day-less gas burned.
  • j a_2
    j a_2 Member Posts: 1,796
    tekmar 279

    After preforming a system overhaul I installed a Tamar 279 and a few thermostatic radiator valves with very good results....I was able to overcome the poor near boiler piping and years of handyman work, on a 7 unit condo building in the Boston area...I must say the Tamar people were helpful when I called for assistance since this was my first application....This was a perfect fit for this building and I highly recommend the 279....J A
  • mor
    mor Member Posts: 42
    Looks like

    Looks like the tekmar is a perfect fit. I'll still check the rd line. Thanks for all your input. MB
  • Dave in QCA
    Dave in QCA Member Posts: 1,764
    tekmar

    The best price that I found for tekmar was at Pexsupply.com.

    http://www.pexsupply.com/Tekmar-279-Steam-Control-One-Stage-7959000-p 

    It is a good idea to go to the Tekmar web site and open up the installation and operation manual.  Read and understand it thoroughly.
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
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