"Andy Hall" wrote in message
...
On Wed, 6 Oct 2004 12:36:40 +0100, "John Aston"
wrote:


Hi, Andy.

Unfortunately, I have already replaced the service pipe with a new 32mm
diameter pipe. Cambridge Water tell me that they can't do anything about
the
flow/pressure "because the supply is fed directly from a reservoir".

This rather suggests that their main is limited.

The best thing that you can do is to look at all the components after
the service pipe. e.g. stop cock full bore lever ball valve, 22mm
pipe internally to key points or 28mm for anything of any length,
avoid too many bends.



Space in my loft is very limited, but I do have basement space so I could
get an accumulator.

GAH make a "Dualstream" accumulator but you have to buy their rebadged
Ariston unvented hot water cylinder with it. I don't know anything about
the
quality of Ariston.

For a 300 litre accumulator and 300 litre cylinder the list price is
£2112
(less 40% from a distributor I'm told!). The 300 litre accumulator is
5'2"
high and almost 2' diameter so it takes up a lot of room.

I suppose that I'll have to compare the Dualstream cost with a "cistern
and
pump" solution and take a view on it.


This is an expensive hobby.

I think that IMM's idea of some storage above the HW cylinder is
interesting, if you have the height. However, be careful about
making the HW cylinder too small because you risk running out of hot
water for the bath.

However......

snip tripe

And you were doing so well up until now. 5/10