Wouter,

On Sat, 23 Sep 2006 00:36:12 +0200, Wouter van Ooijen wrote:

> > > That's more or less how a CV works, but I have never seen 
> > this for tap water.
> > 
> > CV?  What's that?
> 
> Sorry, Dutch: Centrale Verwarming: central (hot water) heating.

Ah, OK.  Yes, central heating is almost always done the same way here, but as I said I understand that sometimes on the Continent there is what I 
think is called a pumped "secondary circuit" with the hot taps on it.  I don't think it's ever done here.  It makes most sense in large single-storey 
buildings, because the pipe-run distance from one side of the house to the other can be very large, so the waiting time and the waste of water are 
large too.

Cheers,


Howard Winter
St.Albans, England


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