help fitting thermostatic mixer tap

Discussion in 'UK DIY' started by Riz1, Jan 11, 2005.

  1. Riz1

    Riz1 Guest


    I bought a Hansgrohe ecostat thermostatic bath/shower mixer tap.
    It has been plumbed in and the "ecostat" works fine but it is not
    regulating the temp at all - it is either very hot or very cold. Is
    there anything i need to adjust or "fix" or sort this? i has assumed
    it was all supposed to work "out of the box" after being plumbed to
    the hot/cold supply as normal?

    Riz1, Jan 11, 2005
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  2. Riz1

    John Borman Guest

    Think iseem to remember it has something to do with how the hot and cold is
    supplied i.e headrer tank or direct mains but tahts as much detail as i can
    give try googling
    John Borman, Jan 11, 2005
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  3. Riz1

    riz1 Guest

    it is supplied via tanks in the loft that have been boosted by a shower
    pump fitted under the bath at the same time as having the taps fitted
    riz1, Jan 12, 2005
  4. Riz1

    riz1 Guest


    yes both the hot and cold are from the same source ie the loft tanks
    via the 2-valve stuart turner 1.8 bar shower pump which has been fitted
    under the bath.

    i couldnt say if they have been plumbed in the right way round but the
    tap does respond to temp in the correct way ie it goes "full hot" when
    you turn in the increase temp direction and "coimpletely cold" when you
    turn in the decrease temp direction.

    i can hear the noise of the pump change as well when the tap output
    changes from hot to cold
    riz1, Jan 12, 2005
  5. Riz1

    riz1 Guest

    I have just noticed that infact the hot and cold are plumbed in the
    wrong way round.
    could this be the reason the thermostatic doobary is not working and is
    giving me just hot or just cold?

    the plumber will swap them over in the morning and we'll see.

    mind you as far as i can tell the "safety stop button" is working the
    wrong way round.
    my understanding is that you can only turn the heat up so far, and then
    you have to press the "38C" button to turn it more hot.
    Infact you can turn it up with no problem but you have to press the
    button to be able to turn it any lower?!
    2 bloody problems in one fancy tap [for the uninitiated like me!
    riz1, Jan 12, 2005
  6. Riz1

    James Hart Guest

    That sounds like the same problem to me, swap the hot and cold over and all
    should be OK.
    James Hart, Jan 12, 2005
  7. Riz1

    riz1 Guest

    thanks yes - agreed the safety stop button is the same problem but it
    was compounded by poor labelling by Hansgrohe IMO: they just have "+"
    and "-" on it with the + being on top and the - on the bottom.
    when it is correctly plumbed increasing temp will be by turning the tap
    "down" ie in the direction of the minus [the 38C button will make sense
    now too!] and to decrease temp you have to turn up ie in the direction
    of the +!!!

    i only sussed this as i sent to B&Q to try to solve the safety button
    dilemma and i noted all other makes of thermo taps all turned in this
    orientation hence the penny dropped
    riz1, Jan 12, 2005
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