2
The British Burns Association recommends 37˚C to 37.5˚C as a comfortable bathing temperature
for children. In premises covered by the Care Standards Act 2000, the valve needs to be set so the
maximum mixed water outlet temperature is 41˚C.
Metal surfaces on the hot supply may become hot during operation. Arrange to have the mixer
valve regularly serviced by a suitably qualified person.
SITE REQUIREMENTS
The installation must be in accordance with Water Regulations Advisory Service
(www.wras.co.uk).
Minimum running water pressure: 0.1 bar, but will operate better at a minimum of 0.5 bar.
Maximum running water pressure: 5 bar, (Static water pressure: 10 bar).
For your shower to perform well you should ensure that the pressure is as specified and a
minimum flow of 5 liters per minute is available at both hot and cold inlets.
If a water supply is fed by a gravity then the supply pressure should be verified to ensure the
conditions of use are appropriate for the valve.
NOTE: Water Regulations requires the handset to be ‘constrained by a fixed or sliding
attachment so that it can only discharge water at a point not less than 25mm above the
spill over level of the relevant bath, shower tray or other fixed appliance’. A double
check valve, or similar, MUST be fitted in the supply pipework to prevent back-flow.
The pressure at both the hot and cold water supplies to the mixer valve should be
the same, and the installer should ensure that the flow is not affected by other
taps elsewhere in the house. It is very important that for use in any mains pressure
systems an expansion tank and a pressure reducing valve has been fitted to ensure
the pressure does not exceed 5 Bar. This should be cleared by the installation
engineer before installation.
WATER TEMPERATURE REQUIREMENTS
Maximum hot water temperature = 80˚C, Recommended maximum = 65˚C.
Minimum hot water temperature = 55˚C, Maximum cold water temperature = 20˚C.
TEMPERATURE ADJUSTMENT RANGE
The mixed water temperature can be adjusted from cold through to hot. There is a safety stop
preset at a set temperature of about 38°C. Always test the water temperature prior to using
the shower.
In the event of failure of cold water system, the valve automatically reduces the flow of hot water
to prevent scalding. It will only operate again once the flow of cold water has been resumed.
MX Atmos Select 6752B 09_14_GF.indd 3
24/10/2014 14:56
