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Thanks for your help Tony, in your experience would I gain anything from overlaying the main feed without doing the communication pipe? (It wouldn't be much effort) The run would be about 15 metres

I've been reading conflicting thoughts on the placement of an unvented cylinder. Is it best to place it close to the mains incomer and boiler or closer to the bathrooms? I have an existing airing cupboard which is quite close to the bathrooms that could house the cylinder or I could position...

Tony, I've measured the existing flow using the above method. I got 32 litres per minute out of 2 taps at 1.5 bar. I couldn't get it down to 1 bar without using the garden tap, I'll do this tomorrow when I get a hose union to direct the flow down the drain via some hose. Is this sufficient...

Would it be beneficial doing it at a particular time of day?

Thanks very much for that! Much appreciated

How is the dynamic flow calculated? I have a pressure guage available if that will help at all?

Hi all, Any advice would be greatly appreciated! Bit of background: House has an unknown size feed pipe but at the house stopcock end it is 20mm MDPE as a water meter has been fitted. The water main is 100mm Ductile Iron which runs in the footpath outside the house. There is a boundary box...

Sorry to drag this one out of the grave :oops: I have a very similar situation albeit with slightly better pressure. Would I be ok with an unvented cylinder? Plan was to have a Veissmann system boiler and tank in the utility (next to the main stop cock) and run the 4 pipe system. Craig

Hi, did you fit an unvented system into your house in the end? Was the 20mm MDPE sufficient? My property has a similar setup with slightly higher pressure and flow but the same 20mm MDPE Craig