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Immersion heater/thermostat swap? Length critical?

Discussion in 'Plumbing and Central Heating' started by Fenlander, 27 Feb 2010.

  1. Fenlander

    Fenlander

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    My immersion heater thermostat has failed. The heater itself tests out OK at about 20 ohms so hopefully no drain down down reqd to replace that.

    I dont know the length of my immersion heater but the thermostat measures 18" and the hole it goes in is 19" deep.

    Looking online I can't see anywhere that would be open sat pm/sunday who stocks just the thermostat but will have a trawl round anyway as we need hot water.

    Did wonder about buying a whole new immersion and just swapping the stat over... but they only seem to come in 11" & 27" (wickes or screwfix).

    Is the stat length crucial... ie could I fit an 11" stat to replace my 18"?

    Thanks.
     
  2. seco services

    seco services

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    probably a 27" immersion.
    is it in the top of a standard hot water cylinder ?

    you can
    no fit the right length stat.
     
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  4. Fenlander

    Fenlander

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    Yep its in the top of a 36" standard open vented cylinder with the green foam covering.

    I absolutely have to sort this today hence limited to DIY type stores.

    I see B&Q do a replacement stat for 27" immersions with the code number TSTAT18 so I wonder if this is an 18"?
     
  5. seco services

    seco services

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    yes its an 18" stat.
    it's in the code T STAT 18.
     
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  7. Fenlander

    Fenlander

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    That's great thanks... I'll nip out to B&Q and it will get us out of a hole.

    Apreciate you replying.
     
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