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

Draining system down from Radiator.

Discussion in 'Plumbing and Central Heating' started by gemius, 26 May 2018.

  1. gemius

    gemius

    Joined:
    7 Dec 2010
    Messages:
    24
    Thanks Received:
    0
    Country:
    United Kingdom
    I want to drain my CH system down to see if it is clear, as I had trouble with a couple of rads not heating up during the winter.
    The only drain point is on the hall radiator. If I drain from here the system will only be drained to the bottom of the down stair rads. If I then open the valve at the boiler to pressurise the system will that flush through all the pipework below the rads ?

    Alternatively I could lift a floorboard and cut a pipe to allow it to drain into the space below. There's a good 18" below and it would only be the water from the low pipework.

    Thirdly I could drill through the wall and fit a proper drain point off the low pipes but I don't want to involve myself in too much extra work unnecessarily.

    Your advice will be appreciated.
     
  2. Iamchamps

    Iamchamps

    Joined:
    24 Sep 2016
    Messages:
    1,026
    Thanks Received:
    162
    Country:
    United Kingdom
    You made that all sound very difficult for a simple task. Just connect a hose pipe to the drain valve and let water from the refill flow through to an outside drain or something until it goes clear. Watch it as it flows and you will see the colour to know if it was bad. Just remember to add some inhibitor when filling back up. You could close all rads and open one at a time to watch the colour.
     
  3. Sponsored Links
  4. gemius

    gemius

    Joined:
    7 Dec 2010
    Messages:
    24
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks for that. Seems I've been thinking about it for too long!
     
  5. dilalio

    dilalio

    Joined:
    20 Mar 2009
    Messages:
    6,971
    Thanks Received:
    1,048
    Location:
    Potters Bar
    Country:
    United Kingdom
    Just be thankful you have a drain cock at all! As long as it still works :)
     
  6. 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

     
  7. Sponsored Links
Loading...

Share This Page