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Immersion element on unvented cylinder

Discussion in 'Plumbing and Central Heating' started by dingodeano, 7 Feb 2013.

  1. dingodeano

    dingodeano

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    Hello. I got a call to a immersion element on a cylinder. When I got there it was an unvented ariston cylinder with four pipes with lever stop valves on it. On the lower pipes there are two inline hose drains. There are also a couple of expansion vessels.
    I am only used to changing gravity / unvented immersions.
    Is changing this element beyond a mere electrician? I phoned one of my plumber mates who said he is not 'unvented' and to steer clear as there may be problems pressurising the system after emptying tank.
    What would you advise is it too complicated a job ?
     
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  3. oph

    oph

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    Technically mate your SUPPOSED to be G3 qualified to work on unvented.


    New one on me that Ariston make vented cylinders if im honest.

    I changed top and bottom elements last October on a direct unvented Ariston I installed in 2006.

    It was like crowbarring the Titanic off the seabed
     
  4. ianmcd

    ianmcd

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    Some not all Unvented immersion heaters have different threads to standard ones think ariston are one of them, but to be honest strictly speaking you need to have G3 to do it, an unvented immerser Must have an over heat cut out as well as a thermostat
     
  5. dingodeano

    dingodeano

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    Well I think I might just give this one a miss.
     
  6. CBF

    CBF

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    yes you should as you don't have the G3 cert & no aristons are not a standard size
     
  7. bolshy

    bolshy

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    It's funny, most people with unvented DON'T KNOW they've got unvented, and therefore don't get their cylinders serviced - disaster waiting to happen if you ask me :eek:
     
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