We have a aqualisa shower that was fitted about a year ago after the
previous one leaked. Have noticed that to get hot water the
thermostatic control has to be moved almost to the extreme hot part
(fully clockwise) to get any decent amount of hot water. I was thinking
of taking the unit apart but thought I would ask here first!

Is it possible that the thermostatic cartridge has been installed
wrongly and that it needs to be taken out and put in correctly.

As you can tell I'm no expert but would be please if those experts here
could offer some advice. Starting to get sick of only warm showers.

The shower is fed from a combi boiler if that helps.

Me

On Wed, 08 Mar 2006 17:44:42 +0000, Andy Hall wrote:

On 8 Mar 2006 07:29:49 -0800, wrote:




The shower is fed from a combi boiler if that helps.

The cartridges comes in different colours for different likely input
pressures.

grey - balanced low pressure
pink - mains hot and gravity cold.
??? - mains hot and cold.


--
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

"Tim Lamb" wrote in message
...
In message . com,
writes
We have a aqualisa shower that was fitted about a year ago after the
previous one leaked. Have noticed that to get hot water the
thermostatic control has to be moved almost to the extreme hot part
(fully clockwise) to get any decent amount of hot water. I was thinking
of taking the unit apart but thought I would ask here first!

I have an Aqualisa thermostatic and initially thought the plumber had
installed the hot/cold piping in reverse.

It transpired that the system is *flow* sensitive. If you run on low flow
you only get cold water. Mine is pumped from a cistern so this may not
translate to a combi.

regards
--
Tim Lamb

Thanks for all this advice. I think that the thermostatic valve may
therefore be to blame. Now if they come in different 'colours'

1 Which is the one I need for a combi boiler?

2. Also I assume it's a pretty easy job to do and is a matter of just
undoing a few screws and taking the old one out and putting a new one in.

3. On a the Aqualisa website there's all sorts of shower thermostatic
valves. How do I decide which one is the right one?

Thanks again in advance.

T

"Tim Rogers" wrote in message
...

"Tim Lamb" wrote in message
...
In message . com,
writes
We have a aqualisa shower that was fitted about a year ago after the
previous one leaked. Have noticed that to get hot water the
thermostatic control has to be moved almost to the extreme hot part
(fully clockwise) to get any decent amount of hot water. I was thinking
of taking the unit apart but thought I would ask here first!

I have an Aqualisa thermostatic and initially thought the plumber had
installed the hot/cold piping in reverse.

It transpired that the system is *flow* sensitive. If you run on low flow
you only get cold water. Mine is pumped from a cistern so this may not
translate to a combi.

regards
--
Tim Lamb

Thanks for all this advice. I think that the thermostatic valve may
therefore be to blame. Now if they come in different 'colours'

1 Which is the one I need for a combi boiler?

2. Also I assume it's a pretty easy job to do and is a matter of just
undoing a few screws and taking the old one out and putting a new one in.

3. On a the Aqualisa website there's all sorts of shower thermostatic
valves. How do I decide which one is the right one?

Thanks again in advance.

T

Some good diagrams on The Shower Doctor web site. Google for it.

I've found the tech. support line at Aqualisa to be very helpful (01959
560 010). Maybe it was luck but the guy was very knowledgable and had
time to discuss possible solutions.

"Tim Lamb" wrote in message
...
In message , Tim Rogers
writes

Thanks for all this advice. I think that the thermostatic valve may
therefore be to blame. Now if they come in different 'colours'

1 Which is the one I need for a combi boiler?

Reading from my 10 year old installation instructions.... Pink cartridge.

Multipoint systems, mains fed gas fired instantaneous water heaters must
be capable of raising the temperature of the incoming water by 45C and
delivering a flow rate of not less than 7litres/min to the shower valve.

Thanks I'll look into this. I won't rush just look around and see. I suspect
this may be the problem though.

2. Also I assume it's a pretty easy job to do and is a matter of just
undoing a few screws and taking the old one out and putting a new one in.

Er. IANAPlumber but yes. Turning off the water supplies helps:-)

I think I'd worked that out!!!!

3. On a the Aqualisa website there's all sorts of shower thermostatic
valves. How do I decide which one is the right one?

Pass. You could also try Shower Doctor. I don't have a URL.

Had a look at that site. Very helpful.

Thanks to everybody for the info.

Ta,

T

regards
--
Tim Lamb