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Need a wireless room stat

Discussion in 'Plumbing and Central Heating' started by donlogan, 12 Sep 2012.

  1. donlogan

    donlogan

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    Hi,

    I need to fit a wireless roomstat. Does anyone have a recommendation on which one to get?

    And as for fitting the receiver:

    The current stat is wired with 3 core. Do wireless stats just need a live and neutral with separate switchline like the wired ones? If so, then can i just leave the 3 core connected to the boiler end and just cut the other end of the cable short and then connect the receiver next to the boiler?

    Boiler is a Vaillant Combi. No sure which model as i'm at work but can find out if necessary.

    Thanks.
     
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  3. stem

    stem

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    That's up to you really. It depends on what you want to pay and what features you require. Some are simple thermostats, others allow you to set different temperatures at different times of the day. I would recommend a reputable brand such as Honeywell, Danfoss or Drayton.

    Yes

    If you mean can I use the existing cable but shorten it, then yes, as long as the receiver is within the specified range of wherever you plan to put the transmitter. Also walls and metal objects etc., can effect the range. If you select a thermostat which also functions as a programmer, you may need to move the live supply (if it's switched by an existing programmer) to a permanent live connection, or leave the existing programmer in the constantly "on" position.
     
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  4. goofy gorilla

    goofy gorilla

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    hi mate - i have Honeywell CMT921 Wireless Programmable Thermostat...i had the plumber fit it when i had a brand new boiler installed about 5 weeks a go, funny enough it was a vaillant 831 boiler..my mum is not too tech so i bought a 150 timeswitch which im gonna replace with...might sell it to you if your interested before i put it in my local paper or ebay..give us a shout..will post pics to you to show you its working fine...
     
  5. donlogan

    donlogan

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    Might do Goof, you got a price?
     
  6. doitall

    doitall

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    The CM 921 is a one day timer, whereas the CM 927 is a 7 day much better in my opinion.

    As for wiring, the receiver can go down by the boiler and be wired in direct, the stat is battery and can go where you want it.
     
  7. goofy gorilla

    goofy gorilla

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    .ill post some pics up if interested in situ before i remove it so you can see that its working...will probably be at the weekend as im busy at work..lol
     
  8. donlogan

    donlogan

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    Is that a CMT927 doitall?

    And is amazon generally the cheapest place to get one?

    Thanks.
     
  9. doitall

    doitall

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    No, it's a Honeywell CM 927.

    I think before we go further, the 921/927 are both programmable room stats, which are ideal for combination boilers where you don't have a timer.

    However you originally asked for a room stat, and the Honeywell 92E is best for that, and a cheaper option.

    Best price is to shop around "Plumbnation" are good and you can find some bargains on ebay.
     
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  11. goofy gorilla

    goofy gorilla

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    will sell mine for £45 delivered....
     
  12. doitall

    doitall

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    I'll take it off you hands if the OP doesn't want it.
     
  13. Dan Robinson

    Dan Robinson

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    cmt927 is the official name bud ;)
     
  14. doitall

    doitall

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    They are both the same, all the literature refers to CM 927
     
  15. goofy gorilla

    goofy gorilla

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    no probs mate..heres some pics that i took, lets give the op a few days if he doesnt get back ill take it off and send it to you..no problem, see pics..
    [​IMG]
    [​IMG]
    [​IMG]
     
  16. doitall

    doitall

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    goofy gorilla

    Send me a Pm
     
  17. Mr Smyth

    Mr Smyth

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