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Grohe 34538 PRECISION FEEL Manual

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GB
Safety and important information
This thermostatic valve will suit supplies of:
Low pressure shower (LP-S).
Conditions of use TMV2
NOTE: Valves operating outside these conditions cannot be
guaranteed by the Scheme to operate as Type 2 valves.
If a water supply is fed by gravity then the supply pressure
should be verified to ensure the conditions of use are
appropriate for the valve.
Recommended outlet temperature
• 44 °C for bath fill
but:
- 41 °C for shower and washbasin
- 38 °C for bidet
The mixed water temperatures must never exceed 46°C.
The maximum mixed water temperature can be 2°C above the
recommended maximum set outlet temperatures.
NOTE: 46°C is the maximum mixed water temperature from
the 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 the Care Standards Act 2000, the maximum mixed
water outlet temperature is 43°C.
The thermostatic mixing valve will 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.
Requirements shall be verified against the original set
temperature results once a year.
The installation of thermostatic mixing valves must comply with
the requirements of the Water Supply (Water Fittings)
Regulations 1999.
The fitting of isolation valves is required as close as is
practicable to the water supply inlets of the thermostatic mixing
valve.
Notes
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 2°C above the designated
maximum mixed water outlet temperature setting of the valve.
Application
Thermostat mixers are designed for hot water supply via
pressurised storage heaters and, utilised in this way, provide
the best temperature accuracy. With sufficient power output
(from 18 kW or 250 kcal/min), electric or gas instantaneous
heaters are also suitable.
Thermostats cannot be used in conjunction with
non-pressurised storage heaters (displacement water
heaters).
All thermostats are adjusted in the factory at a flow pressure
of 0.6:0.6 bar on both sides.
Should temperature deviations occur on account of special
installation conditions, the thermostat must be adapted to local
conditions (see Adjusting).
Specifications
Test pressure 16 bar
Mixed water flow rate without downstream resistance:
0,1 bar approx. 7,5 l/min
0,2 bar approx. 10,5 l/min
0,3 bar approx. 14 l/min
0,4 bar approx. 17 l/min
0,5 bar approx. 18,5 l/min
0,6 bar approx. 21 l/min
Max. water temperature at hot water supply 70 °C
Cold water connection right
Hot water connection left
Minimum flow rate = 5 l/min
If static pressure is not in necessary level , a pressure reducing
valve must be fitted.
High pressure Low pressure
Max. static
pressure 10bar 10bar
Flow pressure
hot & cold 0.5 to 5bar 0.1 to 1bar
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
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