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3. When the components have been cleaned thoroughly, reassemble as found (the filter and
retaining ring should be pressed on until solid and square to the rest of the service valve inner
body).
Please note: Do not replace the service valve inner into the tap without the non-return valves or
filters fitted!
4. Re-grease the 'o' rings on the brass body using WRAS approved silicone grease. Replace
service valve inner assemblies into service valve outer
5. Using the same 12mm spanner, drive the service valve inners down (clockwise) until home then
turn to help maintain them free of sticking.
rotate anti-clockwise about ¼ turn to help maintain them free of sticking.
6. Only when 'both' service valve inners are re-assembled into the body; using the service valve
tool rotate the service valve outers anti-clockwise (starting with the cold side) until they reach
the upper stops. This will open the waterway to the main workings of the tap and water should
start flowing from the outlet.
7. Shut off water (rotating flow control handle clockwise to stop)
8. Return service valve caps to their original location (making sure the slots for ejection are
pointing away from the front of the tap, but accessible by a screwdriver)
Mixed Water Temperature
After commissioning or any maintenance/servicing it's imperative that the water temperatures are
checked in accordance with the table below. The method of adjustment of temperature is covered
later in this manual (see "Temperature Setting")
Application
For Bath Fill
*** Please note: The mixed water temperature and the terminal fitting must not exceed 46°C.
The maximum mixed water temperature can be 2°C above the recommended maximum set outlet
temperature of 44°C.
Please note: If there is a residual flow during the commissioning or the annual verification (cold
water supply isolation test), then this is acceptable providing the temperature of the water seeping
from the valve is no more than 2oC above the designated maximum mixed water outlet temperature
setting of the valve.
IMPORTANT: 46°C is the maximum water temperature from the bath tap. The temperature
takes account of the allowable temperature tolerances inherent in thermostatic mixing valves and
temperature losses in metal baths It is not a safe bathing temperature for adults or children.
The British Burns association recommend 37 to 37.5°C as a comfortable bathing temperature for
children. In premises covered by the Care Standards Act 2000, the maximum mixed water outlet
temperature is 43°C
Temperature Setting
If the Bath and Shower Mixer however has operated correctly for some time previous but no longer
performs to an acceptable level then it may require servicing/cleaning. (see "Maintenance")
whereby the following servicing procedure should be adopted.
If the temperatures of the Bath and Shower Mixer immediately falls out of what are specified for its
individual applications then it may be the result of incorrect installation. Please refer to installation
and site requirements.
For Shower
Recommended Mixed Outlet
Water Temperature °C
44°C ***
41°C
10
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