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SPeciFicationS
For type 2 and type 3 Valves, the supply
conditions specified in section: 'Type 2 and Type
3 Valves - Application' take precedence over the
operating parameters which follow.
Pressures
•
Max Static Pressure:
•
Max Maintained Pressure:
•
Min Maintained Pressure (Gravity System):
0.1 Bar (0.1 bar = 1 Metre head from cold tank
base to showerhead outlet).
Note! For gravity fed or other low pressure
systems (0.5 bar or below) do not fit the outlet
flow regulator (where applicable).
•
For optimum performance supplies should be
nominally equal.
Temperatures
•
Factory Pre-set (Blend) Shower:
•
optimum thermostatic control range:
to 43°C (achieved with supplies of 15°c cold,
65°C hot and nominally equal pressures).
•
recommended hot Supply:
Note! the mixing valve can operate at
higher temperatures for short periods without
damage, however this could detrimentally
affect thermostatic performance. For safety
and performance reasons it is recommended
that the maximum hot water temperature is
limited to 65°c.
•
cold Water range: up to
•
Minimum recommended differential between
hot Supply and outlet temperature: 12°C.
Thermostatic Shut-down
•
For safety and comfort the thermostat will
shut off the mixing valve within 2 Seconds if
either supply fails (achieved only if the blend
temperature has a minimum differential of
12°C from either supply temperature).
Connections
•
inlets: 15 mm compression.
•
Outlet: ½" BSP Flat Face (Exposed models),
15 mm Compression (Built-in models)
•
Standard connections are:
right, outlet - bottom (Exposed models),
top (Built-in models).
10 Bar.
5 Bar.
41°C.
35°C
60°C to 65°C
25°C.
hot - left, cold -
Flow Rates
typical Flow rates on low Pressure Systems,
Mira Select Flex with Mira Select Flex Shower
Fittings:
25
20
15
10
5
0
0
0.2
typical Flow rates on high Pressure Systems
(with 12 Litre/Min flow regulator fitted in shower
control outlet), Mira Select Flex with Mira Select
Flex Shower Fittings:
14
12
10
8
6
4
0.5 1
Supply Pressure (bar)
5
0.4
0.6
Supply Pressure (bar)
1.5 2 2.5
3 3.5 4
0.8
1
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