Discuss 15mm when first fixing house run of combi boiler in the Plumbing Jobs | The Job-board area at PlumbersForums.net
its standard practice to run the cold in 22mm in small to med houses on new builds, normally 22mm with min 15mm branches to each bathroom/ kitchen/ cloaks etc....... make sure the supply to the combi is teed off the 22mm and if its an unvented then def 22mm or larger to cylinder cupboard.
your plumbing design drawings should have pipe sizes on really, stick to drawings so if the system does not work as required its not your fault.
Do most new builds have plumbing design drawings with pipe sizes and pipe runs? The drawings I have been given doesn't even have radiator positions.
Do most new builds have plumbing design drawings with pipe sizes and pipe runs? The drawings I have been given doesn't even have radiator positions.
there's a bath and two showers on the system though
Run the cold in 22 but guessing the hot will all be 15mm as this is what pipe size comes off the boiler?
Reply to 15mm when first fixing house run of combi boiler in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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