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Taking new feed from boiler vs extending current microbore

Discussion in 'Plumbing and Central Heating' started by BillyWillySilly, 18 May 2020.

  1. BillyWillySilly

    BillyWillySilly

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    Hi there,
    I am intending to remove and install a new radiator to a different wall in the spare room. The boiler is also in this room, within a cupboard. We also have issues elsewhere in the house where some rads do not get hot so generally I am looking at how to improve things generally. For example, we have 5 radiators coming off 15mm tails although that doesn’t directly affect the spare room.

    I removed some floor boards and noticed that there are two microbore tails capped with compression fittings. They must have gone to a older radiator in the past but I haven’t traced where they come from. The current rad is fed by microbore from an adjacent room.

    Initially, I though about extending the current radiator pipes to the new radiator but am not a fan of the pipe work generally with microbore. Some of it is quite crushed/compressed elsewhere in the house and I know we have a fair bit of gunk in our system that needs to be cleared out.

    Therefore I am considering slicing the 22mm feed from the boiler and running new 15mm tails to the new rad. The run would more or less be a straight line, and I’ll cap the current tails. What I do not know is how many rads are coming off the current tails but generally we don’t have problems upstairs, only down.

    Generally, is my plan sound or should I just extend what’s currently there?
     
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  3. Terrywookfit

    Terrywookfit

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    Each pair of micro bore pipes should feed only one rad regardless of size.
    It would depend on your system layout regarding new tees. A combi setup would be ok.
     
  4. BillyWillySilly

    BillyWillySilly

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    We don’t have a combo boiler. The microbore feed worries me a bit but there’s no way to check as we refloored the next room. The plumber who did some work in there did not mention anything untoward so I’m going to assume that they were not multiple feeds from the microbore.
     
  5. It could be a good time to bottom it all and fit a new boiler.If only 1 bathroom,,,defo Combi.
     
  6. BillyWillySilly

    BillyWillySilly

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    Boiler is only 3 years old, and we have 3 bathrooms!:LOL:
     
  7. oldbutnotdead

    oldbutnotdead

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    Where is the pump? Any zone valves to think about?
    As long as your tap into the 22s isn't between boiler and pump you should be fine
     
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  9. BillyWillySilly

    BillyWillySilly

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    Pump is right next to the boiler and there are no zones setup.
    [​IMG]
     
  10. BillyWillySilly

    BillyWillySilly

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    Here's the 22mm feeds coming out of the cupboard:

    [​IMG]
     
  11. polesapart

    polesapart

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    Yes it's fine to tee into the 22s in the last picture.
     
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  12. ianmcd

    ianmcd

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    Tell wee Henry I said Hi :LOL::LOL:
     
  13. BillyWillySilly

    BillyWillySilly

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    :confused: It's not technically my Henry...the previous owner left it and it works a treat!
     
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  14. ianmcd

    ianmcd

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    They always do, wish everything was so reliable, I have two, one is over 30 years old and still going strong
     
  15. DIYnot Local

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