On Tue, 27 Jan 2009 18:43:34 +0000, The Medway Handyman wrote:

Ed Sirett wrote:
On Mon, 26 Jan 2009 23:16:36 +0000, fictitious wrote:

On Mon, 26 Jan 2009 22:07:02 -0000, "Arthur2"
wrote:

Hi all.
The wife often lets our 6 year soak in the bath water while the
shower continues to flow whilst submerged. Does this have a
detrimental effect on the combi?

Thanks.

Arthur


Thought that was against water regulations because of possible back
syphoning ?


AIUI this is not a problem provided one of the following is met.


1) The installation can't back syphon because the hose can't reach. 2)
The shower is electric or has built in non-return valves. 3) The shower
is not run from the mains water.

(2) seems to apply here as the mixer is a bar mixer which have NRVs in
them. As do /most/ thermostatic mixers.

I've had numerous run ins with Water Board twonks who wouldn't accept
the three inlet & three oulet vales in the pump head of a pressure
washer as accceptable.

Are pressure washers banned or something where you live?
Are these twonks actively searching for users or just you? ;-)


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://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
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html