"Andy Hall" wrote in message
...
On Fri, 16 Jul 2004 11:33:17 +0100, "IMM" wrote:


"Andy Hall" wrote in message
.. .
On Fri, 16 Jul 2004 00:27:39 +0100, "IMM" wrote:

Andy Hall wrote in message
...

- A combi that can do two showers, say 14 litres/min.

14lpm does not equate to two showers.

It does. Water companies are to charge extra if you have a power
shower
pump, of which most do not get up to 17-18 litres/min. 14 litres min
of
hot
will be about 17-18 with cold added.

With piddly little electric showers doing around 5lpm, 7lpm does not
equate to a decent shower.

7 l/m with an electric shower is a powerful shower.

It's more than that - it's a miracle.

In the US, in some
areas they are considering limiting showers to 7-8 l/min. Some water
companies went around all the house and fitted flow restrictors in the
hose
outlets.

The shower gestapo?

Most never noticed any difference. People like the pressure on
their skin, the flow doesn't mean that much.

Two generalisations which are pretty meaningless.

You obviously don't know.

(Slartibartfast) wrote in message . com...
"Christian McArdle" wrote in message . net...
I only get 12-13 litres per minutes at those taps. I have have both taps
on at the same time the flow drops off. :-(

Not good. The only hope is that the behaviour was caused by a partially open
stopcock or similar restriction.


I've just had my water pressure and flow rate measured by Severn-Trent
and it's slightly better: 16 litres/min and 36m head of pressure.

He advised that this was OK for a combi boiler but the concensus here
is that 20l/min is the minimum?

M.

He advised that this was OK for a combi boiler but the concensus here
is that 20l/min is the minimum?

No. That's absolutely fine for an instantaneous combi. There is no marginal
about it. It's a little low for a mains pressure storage system, but not low
enough to stop them working, just enough to make the advantages over an
instantaneous combi less compelling.

Christian.