Flues and pipework

Discussion in 'Plumbing and Central Heating' started by Belboz, 11 Jan 2017.

  1. Belboz

    Belboz

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    Apologies in advance for the lack of knowledge...

    I have been trying to make sense of the WIKI in relation to flues and other pipework. I have a bit of a basic understanding but I wondered if someone on here could please tell me:

    Is there such a thing as a heat only boiler which can be fitted using a concentric flue up the chimney breast and, if so, am I correct in thinking that heat exchange types don't require any drain off which condensing boilers do?

    Thanks to all those out there who continue to help with advice.

    B
     
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  3. vulcancontinental

    vulcancontinental

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    Yes there are some that can be flued up a chimney, mostly non- concentric, B23, but all now will be condensing. I am told there is a possibility of a dispensation for non-condensing boilers for SE and U duct communal flue systems but haven't heard confirmation of that.
     
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  4. gasmanstu72

    gasmanstu72

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    baxi did a condensing back boiler that had a concentric flue liner to go down the chimney. it had a built in condensate pump
    im not sure if they still make them anymore though
     
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  5. Belboz

    Belboz

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    Are you saying that all boilers are now condensing?

    Thanks to you both.
     
  6. FiremanT

    FiremanT

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    Discontinued.

    Thank God
     
  7. Agile

    Agile

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    I had a preview of that boiler and thought it was a good compromise for those who must have a back boiler!

    But I presume it did not sell very well and so has been discontinued.

    The clever flue system would also seem to have had a future had any boiler maker picked it up as a varient for their boiler.

    A few years ago I went to see a four story house where they needed a new boiler but it had to have a vertical flue and the existing chimney was the only route available. I could not think of any easy to fit solution!
     
  8. vulcancontinental

    vulcancontinental

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    ErP regs Sept 2015 say no manufacturer can market a non condensing boiler in the EU. Like I say for certain buildings there may be an excemption coming but nothing in writing yet.
     
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  9. Belboz

    Belboz

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    Thanks for that.

    And do all such boilers require an external condensate drain of some description??
     
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  11. Agile

    Agile

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    Somewhere to drain condensate indoors or outdoors.

    But there are pumps which can pump up a floor and out through many metres of thin tube!
     
    Last edited: 11 Jan 2017
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  12. Madrab

    Madrab

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    Condensate can be run indoors to a convenient soil pipe, like a sink or washing machine. In fact it's actually better than running it externally as it reduces the risk of freezing and doesn't require larger pipework when passing through and out a wall to a soakaway.
     
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  13. muggles

    muggles

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    Intergas can supply a 10m long concentric chimney liner for their boilers
     
  14. Agile

    Agile

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    A flexible one?

    Is that made of the Baxi material?
     
  15. muggles

    muggles

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    Yes, a flexible one. It's an M&G product I think.
     
  16. Agile

    Agile

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    Baxi seemed to think that they had got the manufacturer to kind of make it to their requirements.
     
  17. muggles

    muggles

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    Maybe they did. As I understand it the Baxi BBU was discontinued as they split less than amicably from the fire front manufacturer and so couldn't get the matching fire fronts any more.
     
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