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Hi,
I'm a first time poster with a skill set akin to that of a competent DIY'er I guess. I'm planning on replacing a old in efficient one pipe system with a flow and return. This will be done on our recently purchased bungalow which has an oil fired boiler. Whilst I'm confident a 22mm flow and return with 15mm T's for the 15 radiators will be sufficient in terms of heat carrying capacity, I'm concerned that the flow resistance posed by the long pipe runs will be excessive. I was therefore wondering if the entire flow and return down the centre of the house should be run in 28mm? The boiler is approximately 8m 50 from the spine of the house where a 14m flow and 14m return will run. Hopefully the plan below shows the layout in sufficient detail.
I'd be grateful of any advice this forum could offer, thanks!
I'm a first time poster with a skill set akin to that of a competent DIY'er I guess. I'm planning on replacing a old in efficient one pipe system with a flow and return. This will be done on our recently purchased bungalow which has an oil fired boiler. Whilst I'm confident a 22mm flow and return with 15mm T's for the 15 radiators will be sufficient in terms of heat carrying capacity, I'm concerned that the flow resistance posed by the long pipe runs will be excessive. I was therefore wondering if the entire flow and return down the centre of the house should be run in 28mm? The boiler is approximately 8m 50 from the spine of the house where a 14m flow and 14m return will run. Hopefully the plan below shows the layout in sufficient detail.
