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Horne Engineering Ltd
COMMISSIONING
Ensure that the pipework has been flushed out before commissioning the TSV1-3
(see installation instructions).
Ensure that both hot and cold water supplies are open and at, or near to, their design temperatures and
pressures and that they are within the requirements of the valve as outlined on page 1. The NHS designation of
the valve should match the intended application.
Set the temperature control to the maximum temperature setting (i.e. rotate the control anticlockwise until it
stops).
Remove the handset, if fitted. Fully open the on/off control by turning it anticlockwise. It is important that the
valve is commissioned using the fixed sprayhead. A burst polythene bag over the sprayhead will help to catch
and deflect the spray during commissioning.
Allow the shower to run at maximum temperature setting until the water temperature has stabilised. Should the
temperature rise in an uncontrolled fashion, then the hot and cold supplies are probably reversed. Correct this
before proceeding.
The TSV1-3 is set in the factory to provide a maximum outlet temperature of approximately 41°C, but this
should be checked on site to ensure that the setting has not been altered and to ensure user safety.
If the maximum temperature requires adjustment, remove the temperature control cap using a sharp blade or
the tip of a penknife and adjust the small slotted screw in the centre of the spindle. Adjust the screw
anticlockwise to increase the temperature, clockwise to decrease the temperature (see Fig. 8).
Fig 8.
After setting the maximum temperature, turn the shower on and off a few times and check that the maximum
setting is correct. Record the commissioning information on the attached maintenance sheet to permit the in-
service performance of the valve to be assessed.
The automatic diverter valve switches flow between the fixed head and the handset. When the handset is
attached the flow is automatically diverted to it. Removing the handset automatically reverts flow to the fixed
head.
Finally, check the thermal shut-off facility of the TSV1-3 by performing a thermal shut off test. While the shower
is running, shut off the cold water supply. The flow from the showerhead should immediately stop or reduce to
a trickle, in which case the mixed water temperature rise should be less than 3°C. In either case, there is no
scalding risk. If the temperature rises above this then it is likely that there is contamination in the TSV1-3 that is
preventing it from shutting off the hot supply. Refer to the maintenance section of this booklet or phone the
factory for advice.
8
Issue 4 June 2016
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