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Programmable Thermostat

  • 10-11-2010 03:38PM
    #1
    KetchupKid
    Registered Users, Registered Users 2 Posts: 198 ✭✭


    Hello,

    My current heating system uses a timer for the 3 zones - upstairs, downstairs and water and a separate rotary thermostat to set the temperatures for each zone. I know in the US most houses have a programmable thermostat which incorporates the 4 units above into one which you can set for say the downstairs Zone for M-F for 20C at 6AM then 10C at 9AM - assuming all are going to work/school then 20C at 5PM and then 10C at 11PM.

    When I asked my plumber about this he said there's no such thing here. Is he just sheltered or am I missing something?


Comments

  • #2
    heinbloed
    Registered Users, Registered Users 2 Posts: 1,632 ✭✭✭heinbloed


    There is plenty of choice. Take a different plumber.
    In a re-trofit situation (radiators,wet and pumped system) I would recommend to use programable automatic radiator valves. Cheap and fast.

    Central heating stations ( the type you talk above) need to communicate with a temperature sensor and/or valve and/or the overide-switch of each zone to-be-controlled. This needs wiring or radio-signals.
    There are also mini-pumps available running on very low electricity (1Watt/h) which pump every radiator individually according to the program. But these need also a central station, electricity supply... again: wiring and/or radio signal.


  • #3
    Pete67
    Registered Users, Registered Users 2 Posts: 1,257 ✭✭✭Pete67


    Your plumber is right in one respect - to control the temperature in different zones, you need to measure it accurately in each one. So a single device would not be able to achieve this without some sort of remote sensing units.

    Saying that there are many Programmable Thermostat systems available which can be networked together to provide centralised control. Remote control by internet or text message is also possible. Take a look at the Heatmiser site for ideas, other manufacturers also produce equivalent systems.


  • #4
    ntpm
    Closed Accounts Posts: 302 ✭✭ntpm


    Your plumber is wrong.... ask him how does underfloor heating work.

    See www.ukhps.co.uk/danfoss-4997-0.htm.

    Danfoss room stat has individual time and temperature sensor... But you would need to rework plumbing to each room with individual actuators/valves and redue electrics.
    This will be costly and involve major works.

    If sounds like you have a properly zoned system (which meets the basic Building Regs Part L).
    The programmer should be able to allow you 3 on/off times (PER ZONE) throughout the day.
    See Hortsmann:
    www.gil-lec.co.uk/products/Controllers/Programmers/Digital+Programmers/Horstmann+7+Day+3+Channel+Digital+Programmer/770372985

    You can improve the efficiency and comfort factor on your system by :
    #1 fitting thermostatic radiator valve (TRV's) get better individual room control.
    #2 Check the controls wiring to ensure you have "Boiler Interlock".
    #3 Clean and flush system, ensure inhibitor is added ( This reduces sludging in rads and boiler).


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