Grohe GROHTHERM 1000 NEW 34 438 Instructions De Montage page 4

GB
Safety and important information
This thermostatic valve will suit supplies of:
High pressure.
Conditions of use TMV2
high pressure
max. static
pressure
flow pressure 0,5 to 5 bar
hot/cold
hot supplied 55 to 65 °C
temperature
cold supplied equal to or less 25 °C equal to or less 25 °C
temperature
NOTE: Valves operating outside these conditions cannot be
guaranteed by the Scheme to operate as Type 2 valves.
The designation of use is high pressure tub (HP-T) and high
pressure shower (HP-S).
HP-S for 34 438 and 34 557
HP-S and HP-T for 34 439
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.
1
low pressure
10 bar 10 bar
0,1 to 1 bar
55 to 65 °C
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 3 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
Minimum flow pressure without
downstream resistances
Minimum flow pressure with
downstream resistances
Max. operating pressure
Recommended flow pressure
Test pressure
Flow rate at 3 bar flow pressure
Bath
Shower
Max. water temperature at hot water supply
Recommended max. flow temperature (energy saving) 60 °C
Safety stop
Hot water temperature at supply connection min. 2 °C higher
than mixed water temperature
Cold water connection
Hot water connection
Minimum flow rate
If static pressure exceeds 5 bar, a pressure reducing valve
must be fitted.
0.5 bar
1 bar
10 bar
1 - 5 bar
16 bar
approx. 20 l/min
approx. 14 l/min
70 °C
38 °C
right
left
= 5 l/min