1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Shower on megaflow (unvented) system fluctuating temperature

Discussion in 'Plumbing and Central Heating' started by ashirusnw, 13 Apr 2011.

  1. ashirusnw

    ashirusnw

    Joined:
    13 Apr 2011
    Messages:
    40
    Thanks Received:
    0
    Location:
    London
    Country:
    United Kingdom
    I'm in a flat where the hot water (& cold) is centrally supplied to all flats on a mains pressure (megaflow/unvented) system.

    The shower in my flat has a manual mixer (not thermostatic) which doesn't seem to keep a constant temperature it fluctuates making for an uncomfortable shower - one minute cold, the next too hot.

    Could replacing the manual mixer with another manual mixer help?

    Btw, the landlord doesn't want to chance it for thermostatic mixer - he says it's very expensive and break easily, and he hasn't had complaints from anyone else so far.
     
  2. Sponsored Links
  3. Agile

    Agile

    Joined:
    26 Jun 2004
    Messages:
    63,594
    Thanks Received:
    4,526
    Location:
    London
    Country:
    United Kingdom
    I would measure the incoming temperature to the mixer tap to see if its arriving at a constant temperature.

    If it is then there is probably some thermal oscillation occuring as the hot section heats up which is turning off the HW flow causing it to cool again.

    I always suspect that its the jumpers expanding.

    That is sometimes found with cheap taps. Changing the flow rate sometimes helps although with no control over incoming temperature makes that more difficult for you.

    Tony
     
  4. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page