5 showers, what pump?

[Skillup]

Hi

I am in the middle of renovating a large Victorian house and am fitting 5 en- suites! in this 8 bedroom house, the double hot water cylinder is on the 2 nd floor and the double storage is in the loft above it, the mixer showers that I'm going to install will be three on the 1st floor and two on the ground floor, the en- suites will not be far in distance from one to the next.
Can anyone advise which would be the best pump to use or any other pointers would be hugely appreciated-

 

[ocentric]

This would be better suited to an unvented system - no need for any pumps. If you do stick with unvented & pumps, go with a Stuart Turner pump or pumps.

 

[wheeto]

This would be better suited to an unvented system ....

Would an unvented system cope with such a large potential maximum draw? Let's say three showers and a toilet filling?

 

[Skillup]

I have put in 22mm hot and cold going to the thermostatic showers,
Will I need pressure control valves on each shower,
Still not sure what size of pump I need, 4.0 bar?
Oh and the tanks are quite big as the property was used as a nursing home 12 years ago and had multiple ensuites (14 I think) so they should be sufficient! Thanks 4 replies

 

[ocentric]

Would an unvented system cope with such a large potential maximum draw? Let's say three showers and a toilet filling?

Yes it would, provided it's sized correctly just as with an unvented

 

[Plumbstar Tom]

yes correctly sized unvetned will cope and will not need any pump

 

[dontknowitall]

I did a 5 bathroom job once and we put an electric 300 Litre unvented in the attics (for 5 showers and one bath). I was late into the job and it seemed the customer wanted to run his hot water with electricity. I didn't like him so didn't argue. Gas boiler ran the central heating.

 

[wheeto]

Thanks for the clarification both. I've not encountered any unvented systems yet but I assumed that they'd be limited by mains water pressure, whilst (as long as you don't let the cistern(s) run dry) a pumped open system would be able to cope with a higher "instantaneous" / concurrent demand.

 

[justlead1]

Hi, Haveyou considered unvented with a pumped feed from existing CWSC? As this would allow the pipe sizing required to be achieved