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Discuss worcs bosch 24i to 34/38i ? in the Central Heating Forum area at

  1. david stanton

    david stanton New Member

    i've got a worc 24i at 9l which is about 5 years old, from reading specs the only difference on the 34/38i is the litres flow rate, i'm presuming this is just one part in there that makes the difference? Can a 24 be "converted" to a 34/38 with some swap of a part, so I can get a much better shower?
  2. Gasmk1

    Gasmk1 GSR

    • Like Like x 1
    • Agree Agree x 1
  3. Riley

    Riley S. Mod Trusted Plumber GSR Top Contributor!!

    Modifying a gas appliance. Big no no
    • Like Like x 1
  4. david stanton

    david stanton New Member

    would it be a modification though, not just a swapped part?
    • Disagree Disagree x 1
  5. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    different internals so new boiler
  6. Riley

    Riley S. Mod Trusted Plumber GSR Top Contributor!!

    You won’t get the answer you’re looking for
  7. king of pipes

    king of pipes Trusted Plumber GSR

    No no no no
  8. Allgoode

    Allgoode GSR

    You may as well crack on with it yourself, what do we know...
    Just make sure your family & neighbours have moved over 100mtrs away & then i can read about it in the papers & have a chuckle. Darwins theory of evolution will prove right..
  9. bogrodder

    bogrodder Plumber GSR

    Yes, the answer is purchasing a new boiler.
  10. SimonG

    SimonG Trusted Plumber

    These are not the droids you are looking for
    • Like Like x 1
    • Winner Winner x 1
  11. Rob Foster

    Rob Foster Top Contributor!!

    Dont worry you only have a couple of years left in your WB boiler anyway, and a new WB will be bust and ready to update after another 7 years.
    • Funny Funny x 1
  12. david stanton

    david stanton New Member

    cheers chaps, sound like i'll wait for the heat exchanger to go then and 'upgrade', in the mean time i'll rig up the jet washer to the hot water somehow to get a better shower.
    • Funny Funny x 2
  13. dan_the_plumber

    dan_the_plumber GSR

    I’m pretty sure the 24i can be converted to a 30i. I think it just need a change of code plug and possibly a different flow restrictor.
    The work would obviously need to be done by a Gas Safe Engineer. I’d say it’s worth your chosen engineer speaking to Worcester Bosch to see if and how it could be done.
    • Disagree Disagree x 1
  14. david stanton

    david stanton New Member

    don't think that increases the flow of the DHW?
  15. dan_the_plumber

    dan_the_plumber GSR

    Yes. If you are able to fit a flow restrictor with a higher flow rating then you’ll get more water through the boiler. You need to measure the flow rate you’re currently getting out of the rising main of course, to make sure it’s worth doing.
    The code plug just makes the fan spin faster and so the Boiker burns more gas. This heat extra heat energy is exchanged into your increased water flow and hey presto.
    All parts would need to be Worcester genuine parts and fitted by a Gas Safe Engineer.
    I know for a fact this used to work with Worcester I junior boilers. I’m not 100% about the new Greenstar I range...but it’s worth finding out :)
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