IMPORTANT
Condition of use for type 2 valve High Pressure Low Pressure
Maximum static pressure 10 Bar 10 Bar
Flow pressure Hot and Cold 0.5 to 5.0 Bar 0.1 to 1 Bar
Hot Supply Temperature 55 to 65 °C 55 to 65 °C
Cold Supply Temperature Equal to or less than 25 °C Equal to or less than 25 °C
Valves operating outside these conditions cannot be guaranteed by the Scheme to operate as Type 2 valves.
For Dynamic flow pressures above 5 bar fit pressure reducers.
Maximum Dynamic flow pressure ratio between hot & cold inlet supplies = 5:1
Optimum performance is achieved when hot and cold inlet pressures are nominally balanced to within 10% of each
other.
The shower mixer can accept temporary elevated temperatures to 85°C without damage.
Hot water storage temperatures should be maintained between 60-65°C.
Recommended outlet temperatures
44°C for bath fill see notes below
41°C for showers
41°C for washbasins
38°C for bidets
Mixed water temperatures must never exceed 46°C. The maximum mixed water temperature can be 2°C above
the recommended maximum set outlet temperatures.
Please read complete installation instructions before fitting.
Specification. TMV2 valve for use with High and Low Pressure
Note:
46°C is the maximum mixed water for a bath tap. The maximum 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 recommends 37 to 37.5°C as a comfortable bathing temperature for children. In
premises covered by Care Standards Act 2000, the maximum mixed water outlet temperature is 43°C.
The thermostatic mixing valve must be installed in such a position that maintenance of the TMV and its valves
and the commissioning and testing of the TMV can be undertaken.
SEE SETTING TEMPERATURE - Commissioning notes.
The valve is suitable for all water systems including Gravity fed, Pumped Systems, Combination Boilers,
Condensing Boilers, Mains Pressure fed Systems. However if used in low pressure gravity fed installations to
maximize flow rates use 22mm pipework reducing to 15mm close to the inlets for the HOT and COLD supplies.
Fit isolation valves as close as is practicable to both the HOT and COLD inlet supplies.