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Malvern manual version 1.0 S.D 25.4.2014
The bath includes a type 3 Heat guard Thermostatic mixing valve which has been manufactured to
NHS model engineering specification D08 and approved under the TMV3 scheme.
Please read the following which outlines how a TMV3 may affect the use of your bath.
The working parameters of the TMV3 require a water pressure of 1-5 bars with a maximum pressure loss no
greater than 10:1 between hot and cold feeds.
It is important to note that a pressure difference between hot and cold pipes will have a great effect on the
time it takes to fill a bath.
i.e.
Hot water 1.4 bar and cold water 2.4 bar = approx. 9min to fill with 180 litres.
Hot water 2.2 bar and cold water 2.2 bar = approx. 5min to fill with 180 litres.
If in doubt a pressure test should be carried out prior to installation of the bath and if required a booster pump
or pressure reducing valve fitted.
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