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Thermostatic Valve Selection Question

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Portgas
Portgas Member Posts: 8
in Strictly Steam
I plan to install Danfoss TA2000 1PS thermostatic valves on the radiators in my one-pipe steam system. The radiators are



open without obstruction and not enclosed. Other than cost would it make more sense to purchase the valve with a mounted



dial and remote sensor (Model 013G8252) rather than the one with an integrated mounted dial and sensor (Model 013G8250)?



I ask this question since I am concerned that the integrated model may shut the vent too early since it's so near the



radiator? On the other hand this may have been considered when the integrated model was designed.

Comments

  • Paul48
    Paul48 Member Posts: 4,469
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    Considered

    That's why they offer different configurations..  http://na.heating.danfoss.com/PCMPDF/Instructions%20RA2000%201PS.pdf
  • nz
    nz Member Posts: 125
    edited January 2013
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    TRVs

    I recently retrofitted all the second-floor valves in my home with TRVs. I went with Danfoss as well.



    I used remote sensors (not operators) for some of the radiators that were enclosed, but not permanently enclosed. All the others, I went with the straight pattern. The article that was linked above should help.



    Regarding performance, the freestanding radiators upon which I installed the side-mount operators work quite well. This solved my problem of some of the eastern rooms getting too hot/overheating.
  • David Nadle
    David Nadle Member Posts: 624
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    Not just cost

    The remote sensor/dial models have a steel capillary tube you'll probably want hidden from view, so there's a placement and installation issue. They're great if you have radiator enclosures. I think as long as there's unobstructed air flow around the integrated sensor/dial you should go with that. The dial is not marked in degrees so there's no calibration issue.
  • Jamie Hall
    Jamie Hall Member Posts: 23,373
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    Ah... on a one pipe system

    you might find yourself a good deal happier if you installed thermostatically controlled vents, rather than valves...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
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    TRV's

    Ake sure that your system is perfectly balanced with lots of main venting before you even order your new TRV's. The pressure should be as low as possible, verified with a 0-3 psi gauge. While the air is escaping, the pressure should be 2ounces, or less.

    After making any corrections, you may not need so many TRV's--NBC
  • Paul48
    Paul48 Member Posts: 4,469
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    Danfoss

    OK, but you have to tell them to stop calling them valves.
  • Portgas
    Portgas Member Posts: 8
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    Valves, Vents and Pressure

    Sorry for the error in nomenclature..I did mean vents.



    TRV how and where do you check for main venting?
This discussion has been closed.

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