shower pressure

[wesj]

hi guys,
I now have a power shower with a pump and a conventional boiler and tank system. I'm having a combi boiler fitted and have been told I will no longer require the pump for the shower is this correct? also will I get more pressure at the shower off a 100,000 btu than a 80,000btu

thanks in anticipation this a great site
wes

 

[olo]

> I'm having a combi boiler fitted and have been told I will no longer require the pump for the shower is this correct?

correct, combi will heat water directly from mains (with mains pressure), so no need for shower pump

> also will I get more pressure at the shower off a 100,000 btu than a 80,000btu

depends, you may want to measure your flow rate first i.e. take a bucket and fill it from your kitchen tap, measure how many litres you can get per minute. Now look at boiler's DHW (domestic hot water) spec and see how many litres of DHW it can produce per minute. The idea is you don't need big boiler if you don't have big water flow.

hope this helps