On Sat, 09 Oct 2004 23:02:00 +0100, IMM wrote:


"Ed Sirett" wrote in message
news
On Thu, 07 Oct 2004 01:23:30 +0100, John Aston wrote:


Ed Sirett wrote in message
news On Wed, 06 Oct 2004 00:40:02 +0100, John Aston wrote:

snip

A question regarding an unvented domestic hot water system: Cambridge
Water
tested my incoming main supply and informed me that the pressure =
2.8
bar
and the flow rate = 25 litres per minute. Is this sufficiently high
for
an
unvented supply feeding a family home containing two power showers, a
bath,
five sinks, three toilets, a washing machine and a dishwasher?

snip

Given that you want to soften the water I strongly think that a pumped
storage cistern approach will be best.

Better than an accumulator?


The problem is that a water softener is a _huge_ restriction on the flow
and
with any form of direct HW systems it will be the bottle neck.

Best have a phosphor in-line descaler.

As to whether this is best or not will depend on the reason the OP wishes
to threat the water.
Adding phosphates is not the same as exchanging ions and that's not the same
as removing ions.


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html