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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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New boiler and flue question
We have an ancient (40 yrs+) New World back boiler in our kitchen
fireplace. Serviced annually and still working well. Somewhat underpowered as the place has been extended. It is going to die sometime. My plan is to replace it with a boiler on the far side of the wall. Would it be practical or legal to pass the boiler flue back through the wall and couple it to the existing lined flue which exhausts through a 7 metre chimney? Thanks, Nick. |
#2
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New boiler and flue question
Nick wrote:
We have an ancient (40 yrs+) New World back boiler in our kitchen fireplace. Serviced annually and still working well. Somewhat underpowered as the place has been extended. It is going to die sometime. My plan is to replace it with a boiler on the far side of the wall. Would it be practical or legal to pass the boiler flue back through the wall and couple it to the existing lined flue which exhausts through a 7 metre chimney? Thanks, Nick. Almost certainly not. Modern regs require that the flue pipe is accessible for inspection. Tim -- Please don't feed the trolls |
#3
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New boiler and flue question
On Sunday, 29 December 2019 23:35:46 UTC, Nick wrote:
We have an ancient (40 yrs+) New World back boiler in our kitchen fireplace. Serviced annually and still working well. Somewhat underpowered as the place has been extended. It is going to die sometime. My plan is to replace it with a boiler on the far side of the wall. Would it be practical or legal to pass the boiler flue back through the wall and couple it to the existing lined flue which exhausts through a 7 metre chimney? Thanks, Nick. Your new boiler will be condensing, another reason why you'll need a different arrangement. |
#4
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New boiler and flue question
On 30/12/2019 07:40:32, Tim+ wrote:
Nick wrote: We have an ancient (40 yrs+) New World back boiler in our kitchen fireplace. Serviced annually and still working well. Somewhat underpowered as the place has been extended. It is going to die sometime. My plan is to replace it with a boiler on the far side of the wall. Would it be practical or legal to pass the boiler flue back through the wall and couple it to the existing lined flue which exhausts through a 7 metre chimney? Thanks, Nick. Almost certainly not. Modern regs require that the flue pipe is accessible for inspection. I thought only joints are required to be accessible? |
#5
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New boiler and flue question
On Sun, 29 Dec 2019 23:58:54 -0800 (PST), harry
wrote: On Sunday, 29 December 2019 23:35:46 UTC, Nick wrote: We have an ancient (40 yrs+) New World back boiler in our kitchen fireplace. Serviced annually and still working well. Somewhat underpowered as the place has been extended. It is going to die sometime. My plan is to replace it with a boiler on the far side of the wall. Would it be practical or legal to pass the boiler flue back through the wall and couple it to the existing lined flue which exhausts through a 7 metre chimney? Thanks, Nick. Your new boiler will be condensing, another reason why you'll need a different arrangement. and the whole flue will need to be of the coaxial type will it not, so can't use the existing lined flue. Plus 7metres is a long way for a boiler fan to push the exhaust. |
#6
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New boiler and flue question
On 30/12/2019 16:34, Davidm wrote:
On Sun, 29 Dec 2019 23:58:54 -0800 (PST), harry wrote: On Sunday, 29 December 2019 23:35:46 UTC, Nick wrote: We have an ancient (40 yrs+) New World back boiler in our kitchen fireplace. Serviced annually and still working well. Somewhat underpowered as the place has been extended. It is going to die sometime. My plan is to replace it with a boiler on the far side of the wall. Would it be practical or legal to pass the boiler flue back through the wall and couple it to the existing lined flue which exhausts through a 7 metre chimney? Thanks, Nick. Your new boiler will be condensing, another reason why you'll need a different arrangement. and the whole flue will need to be of the coaxial type will it not, so can't use the existing lined flue. Plus 7metres is a long way for a boiler fan to push the exhaust. Kestons use 50mm Mupvc and can handle more than that distance. You could pass both the 50mm exhaust and the 50mm air supply up inside the existing chimney (in theory) provided you had access panels whereever there was a bend or joint. Doubt if any 'corgi' blokes would be happy though. |
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