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Specifications
Safety stop
Hot water temperature at supply connection min. 2 °C higher
than mixed water temperature
Thermal desinfection possible
Minimum flow rate
If static pressure exceeds 5 bar, a pressure reducing valve
must be fitted.
Recommendations of use of thermostatic mixing valves
for compliance with the Kiwa UK TMV Type 2
certification Scheme.
EN 1111: 2017 Table 1 Conditions for the use of the
thermostatic mixing valves.
Valves to EN 1111 are designated for High pressure shower or
bath/tub use as appropriate HP-S-T.
Table 1:
Recommended limits for the correct
Dynamic
pressure
Static
pressure
Hot water
temperature
Cold water
temperature
Note: It is advised that valves operating outside of the
conditions stated above cannot be guaranteed to operate
as TMV Type 2 valves to EN 1111
Table 2:
Mixed water
temperature
Shower
Washbasin
Bath/Tub
Installation of the thermostatic mixing valves.
1. The installation shall comply with the requirements of the
Water Supply (Water Fittings) Regulations 1999.
2. The thermostatic mixing valve shall be installed with the
correct backflow prevention device, if required.
3. Isolation valves must be fitted to both hot and cold inlet
supplies and they should be fitted in an accessible position.
4. Strainers are supplied with the product and should be
installed as shown in the installation manual.
5. Thermostatic mixing valves shall be installed as stated in the
installation manual with allowable access for maintenance
and commissioning.
6. Commissioning of the valve.
operation
0.1 MPa
P
0.5 MPa
(1 bar
P
5 bar)
1 MPa (10 bar) max
55°C
T
65°C
T
25°C
Mixed water temperature °C at
point of charge
41 max
41 max
46 max
When commissioning the thermostatic mixing valve check the
following:
38 °C
a. The thermostatic mixing valve and its designation are
appropriate and matches its application, see
https://www.kiwa.com/gb/en/products/tmv-testing/
= 5 l/min
or
https://www.kiwa.com/gb/en/about-kiwa/tmvs-certificate-
search/
b. The supply pressures are within the valves operating range.
c. The supply temperatures are within the valves operating
range.
d. Isolating valves are not provided but should be installed.
e. If all these conditions are met, proceed to set the
temperature as stipulated in the installation instructions.
f. It is a requirement that Type 2 approved valves shall be
verified against the original set temperature results once a
year.
g. When commissioning or testing is due the following
performance checks shall be carried out.
1. Measure and record the mixed water temperature at the
outlet.
2. Isolate the cold water supply to the TMV, wait for at least five
seconds, if water is still flowing check that the temperature is
below 46°C. If there is no significant change to the set outlet
temperature (±2°C or less change from the original settings)
and the fail-safe shut off is functioning, then the valve is
working correctly and no further service work is required.
Note, if there is residual flow during the commissioning or
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.
3. Temperature readings should be taken at the normal flow
rate after allowing the system to stabilise. Any TMV that has
been adjusted or serviced must be re-commissioned and re-
tested in accordance with the manufactures' instruction.
Note:
1. If the TMV's are supplied from storage cistern by gravity
then the supply pressure should be verified to ensure the
conditions of use are appropriate.
2. The maximum mixed water temperature can be 2°C above
the recommended maximum set mixed water temperature.
The mixed water temperature must never exceed 46°C. 46°C
is the maximum mixed water temperature from the bath tap
and takes account of allowable temperature tolerances in
thermostatic mixing valves and temperature losses in metal
baths. It is not a safe bathing temperature for adults or
children. 37°C is the maximum recommended temperature for
children/babies under 18 months, 40°C is the maximum
recommended temperature for adults/children over 18 months.
Installation
The projection can be increased by 20mm with an
extension, see Replacement Parts, page 1,
Prod. no. 07 130.
Reversed connection (hot on right - cold on left).
Replace thermostatic compact cartridge, see Replacement
parts, page 1, Prod. no.: 47 175 (1/2").
Installation of the shower rail
When installing e.g. on plasterboard walls (not solid walls) it
must be assured that an appropriate reinforcement is in place
to ensure sufficient strength.
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