Help please with designing incoming mains size.

[Chalked]

I can understand doing a house like that on a budget and saying they will only be using the house mostly for two people.
I beggars the question, why have 8 bedrooms with en- suites??

 

[Sharp Point]

If its designed correct it will nock spots off oil, lpg and natural gas. 300 litre does seem a little small. What is the road supply pressure

I/ He hopes so, we've heard so many horror stories. Standing pressure is 2.2, dynamic is 1.3 and has a flow rate from existing outside tap straight off old farmhouse incoming mains of 11 l/m

 

[Sharp Point]

I can understand doing a house like that on a budget and saying they will only be using the house mostly for two people.
I beggars the question, why have 8 bedrooms with en- suites??

I know, i know..... we've discussed things at length and this is the compromise, it was hard enough to convince him to get a new cold mains connection, he wanted to just use the piddly old mdpe supply.

 

[Sharp Point]

Right been doing some research on tinternet, seems an average person uses about 150 litres a day......does that sound about right?

quick back of a beermat calcs,

8 x 150 = 1200 litres = 1.2 m3 water a day, when full occupancy.

 

[quality]

What electric supply has the building got?

 

[Sharp Point]

What electric supply has the building got?

Until 'Plumb centre' pull they're finger out and come back with the heat loss calcs/ heating load, then we can decide whether it'll need a 3 phase supply.....if thats what your meaning my friend.

 

[quality]

Until 'Plumb centre' pull they're finger out and come back with the heat loss calcs/ heating load, then we can decide whether it'll need a 3 phase supply.....if thats what your meaning my friend.

Yes mate that is exactly what I mean. It will need 3 phase without a doubt . if there is concern over cost for a water main, tell him to get ready for the electricity supply

 

[Sharp Point]

Yes mate that is exactly what I mean. It will need 3 phase without a doubt . if there is concern over cost for a water main, tell him to get ready for the electricity supply

I think he's sort of prepared for that........i think.

 

[Cardiff Plumber]

If you have a pump room, 2no 50 gallon tanks break tanks, 1" ball valve, Grundfos booster pump, here: CM, CME BOOSTER | Grundfos and ususal additional products, check valves, associated valves, etc, pipe sized accordingly.

Done this on many hotels and bespoke projects! Works every time when there is low pressure and bad flow rate.

 

[Sharp Point]

,

If you have a pump room, 2no 50 gallon tanks break tanks, 1" ball valve, Grundfos booster pump, here: CM, CME BOOSTER | Grundfos and ususal additional products, check valves, associated valves, etc, pipe sized accordingly.

Done this on many hotels and bespoke projects! Works every time when there is low pressure and bad flow rate.

Thanks for that 'Cardiff plumber' from your experience, what height do the cwsc have to be above the pumps?