Boiler and hot water design

[MOSSEP]

I need to spec a boiler and hot water cylinder or multiple of both for a property with the following:


5 x showers
1 x bath
18 x rads

Its a re-furb so gas and water can be upgraded if required.


Anyone got any suggestions? It will need fast re-heat capabilities on the hot water.

 

[AWheating]

the simple solution would be an unvented cylinder and a decent cold water supply. flow restrictors in showers would help with water flow rates/ volume rates.

whats the property for?

 

[MOSSEP]

Its a town house, I think in London.

Just had a spec through so looking at options. I was thinking it may need 2 cylinders given the amount of bathrooms, and either a very big boiler to re-heat them fast or 2 boilers. Then again, I may be going a bit overboard....

 

[Ermintrude]

Nice big ACV , keeps water hotter so when u draw it off it's blende down to 65 so get a lot more usable water for your money and recovery is ridiculously quick but bigger cylinders can much the power 75kw easy.

 

[oz-plumber]

Have you looked into the Rinnai hot water systems.

If you are worried about sizing, they should be able to help you with sizing and designing the system.
( They do over here )


Then you will only need a heating only boiler.

 

[Ray Stafford]

500 litre unvented should do it a treat, so long as you have enough incoming flow rate and pressure.