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@cdbe Thanks for the fast reply and info :)

@cdbe I've just found the Hep20 ones which are the same on e.bay , i will have 9 radiators so i will be using 5 of them for the flow and 5 for the return , but how do you blank of the end of the 22mm feed ? and the 15mm one that i will not be using ?

OK the more I think about it the more I am leaning towards a plastic pipe installation, So my cupboard where I am going to install my combi boiler is around 2 meters in height and I am wanting to have the manifold mounted as close to the floor as possible below the boiler, would this be OK? Or...

Or could I get a larger diameter conduit so that I could place say for example 4 x 15mm pipes together inside the one conduit?

Thanks is there no need for insulation then. Edit : just read the product description seems this is like an insulator as well

Thanks , i think i would go the proper manifold way , would i mount that above ground then have all the pipes ( i take it that would be 18 for 9 rads ? ) just come out of the concrete floor and have them connect directly to the manifold. Also if i did go down the plastic pipe route instead of...

What sort of manifold would i require for 9 radiators

Once installed and running, do you need access to the manifold, apart from if you had an issue?

Thanks for the suggestion about plastic pipes, would this not mean that if I had 9 radiators I would the need to track a large enough track in the concrete floor at the boiler to accommodate 18 x 15 mm plastic pipes?? (2 for each radiator) or am I mistaken

Thanks :) I never thought about the expansion / contraction. The insulation i will be using is that heavy black stuff , and it will be concreted under the floor in 3 rooms , the rest is under floor boards , ( yes i know stupid design of a bungalow , half the rooms have concreted flooring and the...

So we are doing up 3 bedroom bungalow and i am "Trying" to working out the cental heating pipe layout and have done a sketch to get some opinions whether it is ok or if not what i need to change. Most of the floors are concrete and the pipework used will be 22mm & 15mm copper which will be...