Help and Advice

Here our experts can offer help, advice and tips on a variety of different shower problems and questions. If you have a shower problem, the answer could be here!

12
Sep

Mixer showers are supplied with hot and cold water and these supplies can vary in temperature and pressure.  A pressure-balanced mixer shower recognises and compensates for fluctuations in the incoming water pressure in order to maintain a showering temperature within +/- 2°C. However, pressure-balanced mixer showers do not make allowances for fluctuations in the incoming water temperature and under such circumstances the water delivered through the shower will be prone to temperature variation. Thermostatic mixer showers, recognise and compensate for fluctuations in both the incoming water pressure and the incoming water temperature, so if someone runs a tap or flushes a toilet, the shower will adjust to keep the shower temperature within +/- 1°C this is important if there are young children or elderly people in your home. We always recommend and supply thermostatic mixer showers

12
Sep

This is due to failure of the flow control valve, there should be separate isolation valves fitted to the shower supply pipe.  Turn these off, if you can not locate these turn main stop cock off.

12
Sep

Check that the hot water temperature at basin taps is acceptable (this should be approximately 55 to 60°C). If it is not, then the thermostat on the hot water system (e.g. hot water cylinder or combination boiler) needs adjusting.
 
Check whether the showering temperature is acceptable by pressing the 'maximum temperature stop' override button (if fitted on the mixer) and increasing it to a higher setting? If it is then you can reset the 'maximum temperature stop.  If these steps don't work, then we would have to inspect the shower valve and check the thermostatic cartridge

10
Sep

It depends if your boiler is fully-modulating or step-modulating as far as showering is concerned your boiler must be fully-modulated
Newer boilers are generally fully modulated, and are suitable for mixer shower's
If you are unsure whether your old combination boiler / gas water heater is fully-modulating or step-modulating you should check your instructions or contact the manufacturer for advice.( Most combination boilers are suuitable )
A wee bit techi....!
The heat output from a fully-modulating combination boiler can be varied from full off to full on, giving fine control between the minimum and maximum temperatures it produces. This is performed by the boiler's gas control valve automatically varying the amount of gas it allows through in direct relation to the water outlet flow (Good for mixer showers)
check your instructions or contact the manufacturer for advice. Link for manufactures contacts http://www.boileradvice.com/boiler-manufacturers