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Thread: Anyone know anything about combi boilers?

  1. #11
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    Mines is in the attic too 1.5 is good. There should be a filling loop. With it being in the attic I have to top up every 3 to 6 months. Just with it having to travel so far. But TJ will beable to confirm. Mine was fitted last January and toppex it up twice.

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    chippy shoulder Admin
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    Quote Originally Posted by Shamish82 View Post
    Mines is in the attic too 1.5 is good. There should be a filling loop. With it being in the attic I have to top up every 3 to 6 months. Just with it having to travel so far. But TJ will beable to confirm. Mine was fitted last January and toppex it up twice.
    That isnt right....
    I know my boiler is limping along and I have to fill that twice a year.
    A nice new one shouldnt need touching for atleast a year at a time.

    The things I've changed on mine to slowly get it back to health:
    Expansion vessel - replacement for it = £150 + time to tear the whole thing apart... OR fitted £20 external expansiono kit and plumbed it to the original locaion :D
    Divertor valve service kit
    divertor valve actuator

    IT does need a new pump, new heat exchanger and new pressure relief valve as once those go off they leak.

    Jack you'd probably want a new PRV as a matter of course and then keep an eye on things

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    My 'new' (probably 6 years old ) combi boiler needs a slight pressure top up every 12-18months. And by slight I mean 0.1-0.2.

    Doesn't sound right to need to top it up every 3-6 months.

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    Bzzzzz Admin Jack's Avatar
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    It's a Worcester, they have a handy troubleshooting thing on their site which shows how to re-pressurize various models, so managed that quite easily and set it to just over 1.5bar. Will check it again in a week or so to see if its holding Ok but its certainly fixed the heat and noise problems for now

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    Regular falls can indicate a weep somewhere

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    chippy shoulder Admin
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    And or a shagged expansion vessel leading to the pressure relief valve blowing it's guts out

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    Quote Originally Posted by Stuart View Post
    And or a shagged expansion vessel leading to the pressure relief valve blowing it's guts out
    This. You can normally see if it's been happening especially on a regular badis as it leaves marks on the wall and ground
    ^^^ did you just read that? what a idiot ^^^


    PROJECT 2 FAST 2 FAT clicky


    ''lifes what happens, while your busy making plans''

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    Get an engineer out to give it a once over, you don't want pressure in the system or a lack in your case or it might cost more, might just need a decent service and flushing through as well.

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