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Help with automatic bypass valve

Discussion in 'Plumbing and Central Heating' started by sastek, 14 Oct 2016.

  1. sastek

    sastek

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    Hi everyone,

    I have just fitted an ABV to my heating system to replace an old manual gate valve, but when I contacted the boiler manufacturer, Trianco, to ask what the minimum flow requirement for the boiler is, they told me that they could not find this information.

    So I wanted to ask you experts if there is a default minimum flow value that I should use to setup the ABV? I now have an s-plan setup so in theory the ABV should never be needed.
     
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  3. Terrywookfit

    Terrywookfit

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    Which boiler is it ??
     
  4. ianmcd

    ianmcd

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    Why would an ABV not be needed on an s plan system it is always needed on an S plan you normally get away without one on a Y plan I think you are getting mixed up
     
  5. Terrywookfit

    Terrywookfit

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    Going by the name "Trianco" unless it is a surviving Triancogas (which I would very much doubt).
    My guess is an oil fired boiler that does not need one.
     
  6. 45yearsagasman

    45yearsagasman

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    It does if it's an all trv system.
     
  7. Terrywookfit

    Terrywookfit

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    There should always be a rad permanently open.
    Pump / system noise would be obvious.
     
  8. sastek

    sastek

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    HI, sorry for the slow response. It is a Trianco Eurotrader 90 oil fired boiler. I was told that building regs now demanded an ABV.

    I do have TRVs all round, but plan to remove the one in the room with the thermostat.
     
  9. 45yearsagasman

    45yearsagasman

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    Building regs have nothing to do with it. A bypas is required if the manufacturer of the boiler says so. Read the man instructions. A minimum flow rate through the boiler must be maintained. I haven't read the instructions, and if you don't have them, then google them. You may find that having one non trv rad will be OK.
     
    Last edited: 24 Oct 2016
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  11. slippyr4

    slippyr4

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    Building regs do have something to do with it in that they say that a bypass (where required) must be automatic - just using a gate valve is no good.
     
  12. 45yearsagasman

    45yearsagasman

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    The OP has fitted an ABV. His question relates to setting it up.
     
  13. slippyr4

    slippyr4

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    Sure. But the OP said that building regs now demanded one, and you said they had nothing to do with it. I pointed out that they do.
    (n)
     
  14. 45yearsagasman

    45yearsagasman

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    Ok I stand corrected. Can you help the OP with his problem?
     
  15. slippyr4

    slippyr4

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    If you actually bothered to read the original post, you'd see that he's already been in touch with the manufacturer who say they don't have minimum flow rate data. So I fail to see how you telling him to read the manual is helping him with his problem.
     
  16. 45yearsagasman

    45yearsagasman

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    Ok Slip, I certainly don't want to get involved in a key board war of words. I'll retreat and let you guide him with his problem.
     
  17. slippyr4

    slippyr4

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    You're the one that's thrown your toys out of the pram, pal.
     
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