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Radiator problem

  • 22-11-2013 11:13pm
    #1
    Letsdoit
    Registered Users, Registered Users 2 Posts: 122 ✭✭


    Seem to be having a problem with a upstairs rad. ever day there seems to be aie getting into it as i have to bleed it and can hear the hissin noise so air is coming out. i have to way of bleeing it with the key as its too small so i just twist the valve with a rench bottom of rad is perfert its just the top.

    Any ideas on what may be the cause or any soultions?


Comments

  • #2
    mark17j
    Registered Users, Registered Users 2 Posts: 507 ✭✭✭mark17j


    Similar prob with a boxroom rad and bathroom rad, they keep filling up with air, I need to bleed them constantly every 2 weeks or so to get some heat..
    the rest of the rads in the house are fine... got fed up and replaced the bathroom rad, but the issue remains. any ideas anyone??
    I also flushed the rad in the boxroom but there was no sludge inside


  • #3
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    You most likely have a small leak or weap somewhere & it is draining the water from that rad.
    Is the system pressurised or vented?


  • #4
    fredgalway
    Registered Users, Registered Users 2 Posts: 25 ✭fredgalway


    I think its a type of gas you are bleeding not air. This gas is caused by a reaction of water with the pipe work. This sometimes happens in a new build or when the system is filled following repair. There are products on the market to treat this, if it is the problem. I use Fernox available at most plumbing outlets.


  • #5
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    fredgalway wrote: »
    I think its a type of gas you are bleeding not air. This gas is caused by a reaction of water with the pipe work. This sometimes happens in a new build or when the system is filled following repair. There are products on the market to treat this, if it is the problem. I use Fernox available at most plumbing outlets.

    The gas you are referring to is hydrogen & is caused by electrolysis caused by a chemical reaction between all the different metallic components of the system, such as steel, copper, brass, etc. It is the same reaction as the hydrogen produced from a car battery.
    This will not be the case in this situation as hydrogen production would not produce enough to be required to be vented everyday. It is a much slower process, hence the most likely cause is a leak close to the affected radiator draining from that rad.

    To check for hydrogen in your system, when venting hold a carbon monoxide alarm over the vent. If it alarms, it's hydrogen. If not, it's air. Hydrogen false alarms a CO cell.


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