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Commissioning
The valve has been factory set under balanced pressures and hot water supply at 65°C.
When your specific operating conditions are significantly different from the above, the
temperature of the water may vary from the setting.
When the difference is too great, you can adjust the calibration of the valve to suit
individual requirements of the installation:
1. Check the temperature of the water being delivered from the outlet with a
thermometer.
Note: temperature readings should be taken at normal flow rate after allowing for the
system to stabilise.
2. If the temperature is not 38°C (When the 38º is aligned with the override button)
proceed to reset the calibration as follows.
Remove the handle: Prise out the cover, remove the screw and washer and pull off
the handle.
Ensure the step on the stop ring is located at 12 o'clock.
Do not remove the plastic stop ring. Turn the spline of the thermostatic valve clockwise
to decrease the temperature and anti-clockwise to increase the temperature until 38°C
is achieved at outlet.
Note: the sensing part of the thermometer probe must be fully submerged in the water
that is to be tested.
Replace the handle making sure that the pin is against the step.
Once the handle has been attached ensure the temperature does not exceed 46°C when
turned entirely anti-clockwise.
Your valve setting is now commissioned.
Cover
Screw
Stop ring
Pin
Inside handle
Handle
Override
button
Valve splines
Step
Maintenance
We advise that the below is carried out annually as failure to do so may result in
invalidation of warranty.
Isolating the thermostatic valve
IMPORTANT: Please see the below procedure for isolating the thermostatic valve.
1. Isolate the incoming hot and cold water to the valve.
2. Turn shower valve on (left handle) to check isolation, please ensure that your body/
hands are not under the flow of water as there is a potential for delivery of hot water.
3. Remove temperature control handle and temperature stop ring (essential).
4. With shower in the on position, replace temperature handle on thermostatic Valve
(ensure temp stop has been removed).
5. Turn temp handle fully anti clockwise until stop point is reached and can be turned no
further , please ensure that your body/hands are not under the flow of water as there is
potential for delivery of hot water if isolation has been unsuccessful.
6. Turn temperature handle fully clockwise until resistance is felt.
7. If there is no flow of water coming from the outlet during both points 5 and 6 isolation
has been successful, you may now remove and maintain the cartridge.
8. If at any of the above point’s water continues to flow please isolate at an alternative
point within the system for both hot and cold and repeat points 2-8.
Filters
This thermostatic valve is fitted with a double filtering facility.
Filters are fitted on the water inlets and on the thermostatic cartridge.
Depending on the water quality, filters may become dirty,
causing reduced flow and inefficient working of the valve.
Inlet lters
Check water has been isolated. Undo both locking nuts at the back of the valve and
remove from the wall. Pull out the filter/washer, rinse in water to remove the dirt, and
then soak them in vinegar or descaling agent.
Thermostatic cartridge
To clean the filters, you must first remove the cartridge from the housing.
Removing the Cartridge:
1. Check water has been isolated.
2. Remove the stop ring
3. Using a suitable spanner remove the thermostatic cartridge.
4. Clean filters by rinsing them under running water to remove any debris.
5. If there is limescale deposits then it is recommended to immerse the cartridge for a
few minutes in 50% white vinegar + 50% hot water, brush the filters gently and then rinse
under running water to clean all particles. If this is not effective, a replacement cartridge
should be fitted.