rada V10 User manual

11143923-W2-E
PRODUCT MANUAL
V10 THERMOSTATIC SHOWER VALVE
IMPORTANT
Installer: This Manual is the property of the
customer and must be retained with the product
for maintenance and operational purposes.

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CONTENTS
Introduction 2
Patents and Design Registration 3
Safety:Warnings 3
Pack Contents 4
Rada V10 Exposed Shower Valve 4
Rada V10 Concealed Shower Valve 5
Rada V10 Contract Pack 6
Dimensions 7
Specications 8
Pressures 8
Flow Regulator Installation 8
Flow Rate 8
Temperatures 8
Thermostatic Shut-down 8
Connections 8
Installation 9
Suitable Plumbing Systems 9
General 9
Valve Combinations 10
Rada V10 Exposed 11
Rada V10 Concealed 13
V10 Contract Pack
(with Adjustable Elbows) 16
Operation 17
Commissioning 18
Maximum Temperature Setting 18
Type 2 Valves 19
Maintenance 21
Fault Diagnosis 21
Lubricants 21
Cleaning 21
In-service Tests 21
Routine Maintenance 21
Filter Cleaning/Change 21
Spare Parts 23
Accessories 25
Notes 26
CustomerService 28
INTRODUCTION
Thank you for purchasing a quality Rada product.
To enjoy the full potential of your new product,
please take time to read this guide thoroughly,
having done so, keep it handy for future reference.
This product has been certied as a Type 2 valve
under the BUILDCERT TMV2 scheme. It also
complies with the Water Supply (water ttings)
Regulations 1999.
The approved designations for Type 2 Valves
are as follows:
Key: High Pressure (HP) Low Pressure (LP)
Models Designation
Rada V10 LP-S, HP-S, HP-SE#
#The economy designation is achieved with
thettingoftheoutletowregulator.
The Rada V10 is a thermostatic shower valve with
a single control lever for on/off and temperature
control.
The Rada V10 incorporates a wax capsule
temperature sensing unit which provides an
almost immediate response to changes in
pressures or temperature of the incoming water
supplies to maintain the selected temperature. An
adjustable maximum temperature stop is provided
which limits the temperature to a safe level.
Inlet lters are tted to protect the thermostatic
cartridge.
Guarantee
We guarantee this product against any defect
in materials or workmanship for a period of one
year from the date of purchase. For terms and
conditions refer to the back cover.
Products Included In this Manual
1.1651.004 Rada V10 Exposed Mixer
1.1651.005 Rada V10 Concealed Mixer
1.1651.008 Rada V10 Contract Pack
If you experience any difficulty with the
installation or operation of your new
thermostatic mixer, please refer to ‘Fault
Diagnosis’, before contacting Kohler Mira Ltd.
Our contact details can be found on the back
cover of this guide.

31143923-W2-E
Patents and Design Registration
Patents:
GB: 2 291 693, 2 340 210, 2 392 225,
2 421 297
Euro: 1 672 257 DE, FR, GB, IT, NL, SE
USA: 7 240 850
Patent Applications:
Euro:
USA: 2006-0124758-A1
SAFETY:WARNINGS
Rada thermostatic mixers are precision
engineered and should give continued safe and
controlled performance, provided:
1. They are installed, commissioned, operated
and maintained in accordance with
manufacturer’s recommendations.
2. Type 2 Valves are only used for applications
covered by their approved designations, refer
to the TMV2 Requirements Manual.
3. Periodic attention is given, when necessary, to
maintain the product in good functional order.
Caution!
1. Read all of these instructions.
2. Retain this guide for later use.
3. Pass on this guide in the event of change of
ownership of the installation site.
4. Follow all warnings, cautions and instructions
contained in this guide.
5. Anyone who may have difculty understanding
or operating the controls of any shower should
be attended whilst showering. Particular
consideration should be given to the young,
the elderly, the inrm or anyone inexperienced
in the correct operation of the controls.
6. Rapid/Excessive movement of the ow and/
or temperature control levers may result in
momentary unstable blend temperatures.
7. Care is required when adjusting flow or
temperature, make sure that the temperature
has stabilised.
8. When this product has reached the end of its
serviceable life, it should be disposed of in a
safe manner, in accordance with current local
authority recycling, or waste disposal policy.

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Tick the appropriate boxes to familiarize yourself with the part names and to conrm that the
parts are included.
Rada V10 Exposed Shower Valve
q1 x Rada V10 Exposed Shower Valve
q2 x Concealing Plates
q2 x Compression Nuts
q2 x Olives
q2 x Wall Plugs
q2 x Fixing Screws
q1 x 2.5 mm
Hexagonal Key
q1 x Flow Regulator 6 l/min
q1 x Flow Regulator 9 l/min
(refer to section: ‘Flow Regulators’)
q1 x 'O' Key
Documentation
q1 x Installation Template
q1 x TMV Requirements Manual
PACK CONTENTS

51143923-W2-E
q3 x Compression Nuts
q3 x Olives
q5 x Wall Plugs
q5 x Fixing Screws
q1 x 2.5 mm Hexagonal
Key q1 x Concealing Plate
Assembly
Rada V10 Concealed Shower Valve
q1 x Rada V10 Concealed Shower Valve
q1 x Flow Regulator 6 l/min
q1 x Flow Regulator 9 l/min
(refer to section: ‘Flow Regulators’)
q1 x 'O' Key
Documentation
q1 x Cardboard Building-in Shroud
q1 x TMV Requirements Manual

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q1 x Rada V10 Shower Valve with Adjustable Elbows
Rada V10 Contract Pack
q1 x Adjustable
Backplate
q1 x Rigid Riser
q2 x Concealing
Plates
q3 x Compression
Nuts
q3 x Olives
q2 x Wall Plugs
q2 x Fixing Screws
q1 x VR145 Showerhead
q1 x 3 mm Hexagonal Key
q1 x 2.5 mm Hexagonal Key
q1 x 'O' Key
q2 x Wall Plugs
q2 x Fixing Screws
q1 x 'O' Seal
q1 x Hole Plug
q1 x Flow Regulator 6 l/min
q1 x Flow Regulator 9 l/min
(refer to section: ‘Flow Regulators’)
q2 x M4.4 Grubscrews q1 x 2.5 mm Hexagonal Key
q1 x 2 mm Hexagonal Key
Documentation
q1 x Installation Template
q1 x TMV Requirements Manual

71143923-W2-E
Ø46
All dimensions in mm
110
76.5 Ø54
39
17
103
Rada V10 Concealed Shower ValveRada V10 Exposed Shower Valve
Rada V10 Contract Pack
121
115
69
18.5°
24.5°
750
40
15.5
Ø15
103
Ø183
56-76 39-59
21
20
Building In
Depth
50
36.5
115-126
Ø54
*19-30
50
Ø46
76.5
*41-52
Ø86
36.5
133-153
208
* Adjustable to
suit installation
DIMENSIONS

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SPECIFICATIONS
For Type 2 Valves, the supply conditions
specied in the TMV2 Requirements Manual
take precedence over the operating parameters
which follow.
Pressures
• Max Static Pressure: 10 Bar.
• Max Maintained Pressure: 5 Bar.
• 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 t the outlet
ow regulator (where applicable).
• For optimum performance supplies should be
nominally equal.
Flow Regulator Installation
Flow regulators are supplied with this product
and should be tted in high pressure systems
to either;
• Reduce excessive force and ow rate.
• Reduce noise through the mixer due to high
or unequal pressures.
• Stabilise incoming supply temperatures.
Flow Rate
Minimum ow rate: 3 l/min
Maximum ow rate: 30 l/min
Note! Minimum ow rate for
VR145 Showerhead is 6 l/min to
achieve a full spray pattern
0.501.0 1.52.0
4
6
8
10
20
30
40
50
Outlet Flow l/min (6l/m)
Pressure Loss (bar)
Outlet Flow (l/min)
Outlet Flow l/min (9l/m)
Outlet Flow l/min (No Flow Regulators)
Pressure Loss (bar)
Outlet Flow l/min (9l/m
Outlet Flow (l/m)
Outlet Flow l/min (6l/m)
Outlet Flow l/min (No Flow Regulators)
Temperatures
• Factory Pre-set (Blend) Shower: 41°C.
• Optimum Thermostatic Control Range: 35°C
to 45°C (achieved with supplies of 15°C cold,
65°C hot and nominally equal pressures).
• Recommended Hot Supply: 60°C to 65°C
Note! The mixing valve can operate at
higher temperatures up to 85°C 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 25°C.
• 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 / 15 mm Compression.
• Standard connections are: hot - left, cold -
right, outlet - bottom.(Exposed) outlet top,
(Concealed) (refer to page 14 for 'Reversed
Inlet ' connections).

91143923-W2-E
2. For stud partitions alternative xings may be
required.
3. Isolating valves must be installed close to the
Mixer for ease of maintenance.
4. Pipework must be rigidly supported and avoid
any strain on the connections.
5. Pipework dead-legs should be kept to a
minimum.
6. Decide on a suitable position for the Mixer.
The position of the Mixer and the Shower
Fittings must provide a minimum gap of 25 mm
between the spill-over level of the shower tray/
bath and the showerhead (refer to illustration).
This is to prevent back-siphonage. For further
information on the installation of your Shower
Fittings, refer to the Fittings Installation and
User Guide.
Note! Only use Shower Fittings recommended
by the manufacturer or supplier.
Note!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.
Suitable Plumbing Systems
Gravity Fed:
The thermostatic mixer must be fed from a cold
water cistern (usually located in the loft space) and
a hot water cylinder (usually located in the airing
cupboard) providing nominally equal pressures.
Mains Pressurised Instantaneous Hot Water
System (Combination Boiler):
The thermostatic mixer can be installed with
systems of this type with balanced pressures.
(Recommended Minimum Maintained Pressure:
1.0Bar).
Note! On combination boiler systems we
recommend that the thermostatic mixer is
operated in the maximum ow position in order to
achieve the minimum ow rate required to ignite
and run the boiler.
Unvented Mains Pressure System:
The thermostatic mixer can be installed with an
unvented, stored hot water system.
Pumped System:
The thermostatic mixer can be installed with an
inlet pump (twin impeller). The pump must be
installed in a suitable location and in accordance
with its instructions.
General
Installation must be carried out in accordance
with these instructions, and must be conducted by
designated, qualied and competent personnel.
The installation must comply with the “Water
Supply (Water Fittings) Regulations or Scottish
Byelaws” or any particular regulations and
practices, specied by the local water company
or water undertakers.
Note! Make sure that all site requirements
correspond to the information given in section:
‘Specications’. For Type 2 Valves see also
supply conditions in the TMV2 Requirements
Manual.
1. The Mixer must not be installed in an area
where it may freeze.
Hose Retaining Ring
25 mm
Spill Over
Level
INSTALLATION

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VALVE COMBINATIONS
These thermostatic mixers are available with various shower ttings and water saving features, refer to
the table below to identify your mixer valve combination:
Flow regulators are supplied for installation on high pressure systems (above 0.5 bar). For gravity fed or
other low pressure systems do not t the ow regulator.
Mixer Valve Shower
Fittings
Flow Regulator
Flow Rate Colour Comments
Rada V10 Exposed n/a 6 L/Min Black Supplied in the component pack,
designed to be tted in the shower
valve outlet
Rada V10 Concealed n/a 6 L/Min Black Supplied in the component pack,
designed to be tted in the RAC
assembly
Rada V10 Contract Pack VR145 6 L/Min Black A 9 l/min ow regulator is pre-tted
inside the VR145 showerhead. For
additional water saving remove
the 9 l/min regulator (refer to the
VR Product Manual) before tting
the 6 l/min ow regulator in the
valve outlet.
For further information on how and where to t the ow regulator, refer to section: ‘Flow Regulators’
page 17.
9 L/Min Orange
9 L/Min
9 L/Min
Orange
Orange

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Rada V10 Exposed
For Built-in version Mixers go to section:
‘Installation, Rada Built-in.
1. The thermostatic mixer can be installed with
rear, rising or falling supply inlets. Decide
on the most appropriate method for your
installation, and if necessary, loosen the
grubscrews and rotate the inlet elbows to
suit.
Important! Make sure that the elbows are
pushed fully onto the mixer before tightening
the grubscrews, do not overtighten.
2. Use the installation template to mark the
positions of the holes for the backplate and
the pipe centres.
For rising or falling supplies the pipe positions
should be set 39 mm from the centre of pipe
to the nished wall at 110 mm centres.
Note! If you are retro-tting your mixing valve
onto existing pipework, an Adjustable Elbow
Pack is available if required, refer to section:
‘Accessories’.
39 mm
3. For solid walls drill the holes for the backplate
with a 6 mm drill and insert the wall plugs
(supplied). For other types of wall structure
alternative fixings may be required (not
supplied).
6 mm Drill
Wall Plug
4. ForRearEntrySuppliesOnly:
a) Drill the holes for the supply pipes at
110 mm centres.
Note! Recess the inlet holes Ø19 mm x
2 mm deep to allow for the concealing
plates.
5. Fit the supply pipework: Hot - Left, Cold
- Right. The inlet pipework should extend
23 mm from the nished wall surface.
Note! If it is not possible to install the
mixer with this pipework conguration follow
instruction 6.
23 mm from nished wall
surface
Elbow
Recess Ø19 mm x 2
mm deep
23 mm
110 mm
HOT
COLD

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6. ReversedInletSuppliesOnly:
a) Remove the sealing plug using the 'O' key
(supplied).
b) Unscrew the outlet nipple using the
‘O’ key (supplied) or a 12 mm hexagonal
key.
c) Ret the sealing plug and outlet nipple in
the opposite outlets and tighten.
Note! Make sure that the ‘O’ seals are
correctly tted.
d) Rotate the mixer 180°.
e) The control lever(s) will have to be
realigned, this can be completed in
section: ‘Commissioning’.
7. Remove the backplate from the mixer by
loosening the grubscrews with a 2.5 mm
hexagonal key (supplied).
8. Secure the backplate to the wall using the
screws (supplied).
9. ForRearEntrySuppliesOnly:
a) Fit the concealing plates over the inlet
pipes.
Note! Apply silicone sealant to the back
face of the ange.
10.Caution! It is essential at this point
that the supply pipework is thoroughly
ushedthroughbeforeconnectiontothe
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
11. Fit the compression nuts and olives onto the
pipework.
12. Align the mixer with the pipework and t onto
the backplate.
Important! Make sure that the hot and cold
inlets on the mixer correspond with the hot and
cold inlet supplies.
13.Tighten the compression nuts onto the mixer
with a suitable spanner.
Caution! Take care not to damage the chrome
surfaces.
14.Tighten the grubscrews to secure the mixer to
the backplate.
15.Fit the shower ttings, refer to your shower
fittings installation and user guide for
instructions.
Important! For high pressure systems (above
0.5 bar) make sure that the ow regulator
(supplied) is tted, refer to section: ‘Flow
Regulators’.
16.Turn on the hot and cold water supplies and
check for leaks.
17.Before using the shower, refer to section:
‘Commissioning’.
Sealing Plug
‘O’ Seal
Screw
Backplate
Olive
Compression Nut
Apply Silicone Sealant
Concealing Plate

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Rada V10 Concealed
1. Carefully remove the concealing cap from the
control lever.
2. Unscrew the grubscrew using a 2.5 mm
hexagonal key (supplied) and pull off the
control lever(s).
Note! The ow control lever must be in the off
position in order to remove it.
3. Carefully remove the concealing ring from the
concealing plate.
4. Determine the route for the hot and cold
supply pipework and for the outlet pipework.
When connecting to the BIV shower ttings it
is recommended that the outlet be positioned
to one side of the mixer. This is to prevent
the exible hose from obstructing the shower
controls (refer to illustration).
5. Mark the routes for the hot and cold supply
pipework at 103 mm centres (Hot - Left, Cold
- Right).
Note! If it is not possible to install the
mixer with this pipework conguration follow
instruction 6.
Falling Supplies: For falling supplies loosen
the grubscrew on each elbow using the 2.5 mm
hexagon key (supplied). Remove the elbows
and install on opposite sides.
Important! Make sure that the elbows are
pushed fully onto the mixer before tightening
the grubscrews, do not overtighten.
Concealing Ring
Concealing Plate
Grubscrew
Concealing Cap
Control Lever
103 mm
Outlet Pipe BIV
Cold InletHot Inlet
Thermostatic
Mixer
Alternative Pipe layouts
Outlet Pipe BIV

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6. ReversedInletSuppliesOnly:
a) Remove the sealing plug using the ‘O’ key
(supplied) or a 12 mm hexagonal key.
b) Remove the outlet nipple using the ‘O’ key
(supplied) or a 12 mm hexagonal key.
c) Ret the sealing plug and outlet nipple in
the opposite outlets and tighten.
Note! Make sure that the ‘O’ seals are
correctly tted.
d) Rotate the mixer 180°.
e) If necessary, loosen the grubscrew on
each elbow using the 2.5 mm hexagon
key (supplied). Remove the elbows and
install on opposite sides. Retighten the
grubscrews.
Important! Make sure that the elbows
are pushed fully onto the mixer before
tightening the grubscrews.
7. Determine the position of the mixer and draw
around the inside of the concealing ring.
8. Carefully cut away the plasterboard and/or
brick work to a depth of between 56 and 76 mm
from the nishedwallsurface.
Important! Take care to stay within the marked
out diameter otherwise the concealing ring will
not seal.
9. Fit the concealing ring over the mixer body,
then, holding the mixer level, central and
square in the hole, mark the positions of the
two backplate xing holes on the wall.
10.For solid walls drill two 6 mm holes for the
wall plugs. For other types of wall structure
alternative fixings may be required (not
supplied).
11. Caution! It is essential at this point
that the supply pipework is thoroughly
ushedthroughbeforeconnectiontothe
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
Sealing Plug
‘O’ Seal
Outlet Nipple
Top
Concealing Ring
Finished Wall
Surface
56 - 76 mm
Rear Mounting
Backplate Fixing Hole
Backplate Fixing
Hole

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12.Insert the wall plugs (supplied) and attach the
mixer to the wall or to the timber noggin with
the screws provided.
13.Fit the compression nuts and olives onto the
pipework, connect the pipes and tighten the
compression nuts.
Important! Make sure that the outlet pipework
protrudes through a Ø25 mm hole in the wall
or stud partition by approximately 40 mm and
temporarily cap off.
Note! For stud partition installations where
access to the rear of the partition is possible,
t the RAC wallplate over the outlet pipework
on the inside of the partition.
For stud partition installations where access
to the rear of the wall is not possible, follow
instructions for solid wall installations, making
sure that suitable wall xings (not supplied) are
used to secure the wallplate to the outside of
the stud partition.
14.Turn on the water supplies and check for leaks.
15.Determine the nished wall position (e.g. tile
thickness). Turn off the water supply, carefully
uncap the outlet pipe and cut to length, the
outlet pipe must protrude through the nished
wall Exposed by 21–23 mm.
Note! Remove any burrs from the pipes before
proceeding.
16.For solid wall installations or stud partition
installations without rear access go to
instruction 21.
For stud partition installations with access
to the rear of the partition continue with
instruction 17.
17.Finish the wall (e.g. tiles).
Important! Make sure that you use the
cardboard building-in shroud when nishing
the wall. This will protect the valve and make
sure that you tile up to the correct diameter.
Caution! Make sure that the nished wall is
within the maximum and minimum limits and to
an even depth (no greater than 2 mm variation)
or the controls will not t correctly.
18.Fit the concealing ring over the mixer and mark
the positions of the three xing holes.
19.For solid walls drill three 6 mm holes for the
wall plugs. For other types of wall structure
alternative fixings may be required (not
supplied).
Caution! Make sure that you do not drill into
pipework in the wall.
20.Insert the wall plugs (supplied) and attach the
concealing ring to the wall with the screws
provided.
Important! Apply silicone sealant to the
groove on the rear face of the concealing
ring
Screws
Outlet Pipe to Fittings
Hot Supply
Cold Supply
40 mm
RAC Wallplate
(shown tted for rear
access stud partitions only)
Cardboard Building-in Shroud
Concealing
Ring
Apply Silicone
Sealant
Screws

16
1143923-W2-E
21.Fit the concealing plate to the concealing
ring.
22.Ret the control lever. Note! Push the control
lever rmly while tightening the grubscrew.
23 Fit the shower ttings, refer to your shower
fittings installation and user guide for
instructions.
Important! For high pressure systems (above
0.5 bar) make sure that the ow regulator
(supplied) is tted, refer to section: ‘Flow
regulators’.
24.Turn on the hot and cold water supplies and
check for leaks.
25.Before using the shower, refer to section:
‘Commissioning’.
V10 Contract Pack (with Adjustable
Elbows)
The adjustable elbows each have adjustment of
10 mm, allowing your thermostatic mixer to be
connected to pipe centres ranging from 133 mm
to 153 mm.
The adjustable backplate allows an additional
11 mm adjustment from the nished wall surface
and should be tted with the cutout in line with the
outlet.
Installation
1. Draw a centre line between the inlet pipework
and, using the adjustable backplate as a
template, mark the position of the adjustable
backplate xing holes.
2. For solid walls drill the holes for the backplate
with a 6 mm drill and insert the wall plugs
(supplied). For other types of wall structure
alternative fixings may be required (not
supplied).
3. Secure the backplate to the wall using the
screws (supplied).
4. Align the mixer with the pipework and t onto
the backplate.
5. Tighten the compression nuts onto the mixer
with a suitable spanner.
Caution! Take care not to damage the chrome
surfaces.
6. Tighten the adjustable backplate grubscrews
with a 2 mm hexagonal key (supplied) to
secure the mixer to the backplate.
7. Refer to the Thermostatic Mixer and Shower
Fitting Installation and User Guide for further
installation and commissioning procedures.
Grubscrew
11 mm
10 mm
Adjustable
Elbow
Adjustable
Backplate

17 1143923-W2-E
Rada V10 thermostatic mixers have a single
sequential control lever for on/off and temperature
control.
The control lever operates anti-clockwise in the
following sequence: Off - On - Cold - Warm -
Maximum Preset Temperature
Maximum Preset
Temperature
Off
Important! For TMV2 installations the mixed water
temperature at the discharge point should never
exceed 46°C.
Flow Regulators
These thermostatic mixers are available with
various shower ttings and water saving features,
therefore the position and type of ow regulator
will vary by model.
For high pressure systems (above 0.5 bar),
identify your model and install the ow regulator
as illustrated (where appropriate). For gravity
fed or other low pressure systems do not t the
ow regulator.
Shower Outlet
Flow Regulator Hose Washer
Hose
Rada V10 Exposed
Note! A 6 l/min and 9 l/min ow regulator is
supplied separately in the component pack,
designed to be tted in the shower valve outlet.
Note! A 6 l/min and 9 l/min ow regulator is
supplied separately in the component pack,
designed to be tted in the RAC.
Rada V10 Concealed
See Accessories Page.
RAC Assembly (will
vary depending on
model)
Hose Washer
Flow
Regulator
Hose
OPERATION

18
1143923-W2-E
COMMISSIONING
Maximum Temperature Setting
Before using the shower the maximum temperature
must be checked to make sure that it is at a
safe level. It has been preset to approximately
41°C at the factory but due to variations in site
conditions the maximum temperature may need
adjustment.
Note! Make sure that the hot water temperature
is at least 55°C and that there is sufcient supply.
For Type 2 installations the maximum blend
temperature is determined by the application,
refer to the TMV2 Requirements Manual.
1. Turn on the mixer to the maximum temperature
and maximum ow (i.e. fully anticlockwise) and
allow the temperature to stabilise.
If the temperature is too hot or too cold adjust
as follows.
2. Carefully remove the concealing cap from the
control lever.
3. Loosen the control lever grubscrew with the
2.5 mm hexagon key (supplied) and pull off
the control lever.
4. Unscrew the hub retaining screw with a
2.5 mm hexagon key.
Note! Do not remove the hub.
5. Insert the 2.5 mm hexagon key into the centre
of the spindle and engage with the exposed
mounted temperature adjusting screw.
6. Rotate the hexagon key until the required
maximum temperature is obtained at the
shower. Anticlockwise to increase the
temperature, or clockwise to decrease the
temperature (¼ turn = approximately 1°C).
Grubscrew
Control Lever
Hub Hub Retaining
Screw
+
-
Concealing Cap
2.5 mm Hexagonal Key
7. Once the desired maximum blend temperature
has been achieved turn off the mixer by
rotating either the hub or ow control lever
(depending on model) fully clockwise.
Note! Do not remove the hub.
8. Ret the hub retaining screw.
9. Ret the control lever. Note! Push the control
lever rmly while tightening the grubscrew.
10.Check that the shower temperature is correct.

19 1143923-W2-E
Lubricants
Silicone based lubricants must only be used on
the rubber seals.
Caution! Oil based or other lubricant types may
cause rapid deterioration of seals.
Cleaning
The chrome plated parts should be cleaned using
a mild washing up detergent or soap solution,
rinsed and then wiped dry with a soft cloth.
Warning! Many household cleaners contain
abrasive and chemical substances, and should not
be used for cleaning plated or plastic ttings.
Do not use descalents on this product.
In-service Tests
The principal means for determining the continuing
satisfactory performance of the mixing valve is the
in-service test.
Frequency of In-service Tests - Commercial
(non-domestic installations)
Check for correct blend setting every 6 months.
Routine Maintenance
The only maintenance required is a periodic
check of the inlet lters and de-scaling of the
shower head.
Filter Cleaning/Change
Exposed Mounted Models
The lters are tted in the inlet elbows and it will
be necessary to remove the valve off the wall to
access these lters:
1. Turn off the hot and cold water supplies to the
valve.
2. Disconnect the outlet shower ttings (unscrew
the exible hose and retain the sealing washer
or if rigid riser tted, unscrew the compression
joint).
3. Using the 2.5 mm hexagonal key, loosen
the grubscrews retaining the valve on to the
backplate.
If you require a Rada trained service engineer or
agent, refer to section: ‘Customer Services’.
Fault Diagnosis
Symptom:
• Only hot or cold water from the mixer outlet.
• Outlet temperature too hot / too cold.
CauseRectication:
• Inlets reversed (hot supply to cold supply).
Refer to section: ‘Reversed Inlet Supplies’.
• No hot water reaching mixer.
• Check the lters for any blockage.
• Installation conditions outside operating
parameters, refer to sections: ‘Specications’
and ‘Commissioning’.
• If the temperature is too cold and you have
a combination type boiler it may not be
producing sufciently hot water at desired
ow rate (refer to ‘Specications’). Fit ow
regulator (supplied) to shower valve outlet.
For more information contact Mira Showers
or visit the website.
—————————————
Symptom:
• Fluctuating or reduced ow rate.
CauseRectication:
• Check the showerhead, hose and lters for
any blockage.
• Make sure that the maintained inlet pressures
are nominally balanced and sufcient, refer to
section: ‘Specications’.
• Make sure that the inlet temperature
differentials are sufcient, refer to section:
‘Specications’.
• Air lock or partial blockage in the pipework.
• Flow regulator tted incorrectly.
• Low ow causing combination boiler to cycle.
Operate at preset maximum ow.
—————————————
Symptom:
• Water leaking from the showerhead.
CauseRectication:
• Normal for a short period after shut off.
• Check that the pressures are not in excess of
the specications for the product.
• Renew the thermostatic cartridge.
MAINTENANCE

20
1143923-W2-E
9. Clip the concealing plate onto the backplate.
10.Ret the control lever.
Note! Push the control lever firmly while
tightening the grubscrew.
11. Install the concealing cap onto the control
lever.
Models With Adjustable Elbows
Follow the procedure for the Exposed models and
remove the valve from the wall.
1. Using a 12 mm hexagonal key or 'O' key,
unscrew the inlet connector and retain the 'O'
seal.
2. Remove and clean the filters with clean
water.
Note! If the filter is damaged it must be
replaced.
3. Replace the lters.
4. Install the 'O' seal connector and screw into
the elbow.
4. Unscrew the inlet compression nuts on the hot
and cold inlets, taking care not to damage the
chrome nish.
5. Carefully remove the valve off the inlet
pipework and backplate.
6. Remove the lters from the inlets and ush out
any debris with clean water.
Note! If the filter is damaged it must be
replaced.
7. Install the lters and reconnect the valve and
ttings (reverse of the above procedure).
8. Turn on the water supplies and check for any
leaks.
Concealed Models
The lters are tted in the inlet elbows which are
accessed by removing the concealing plate:
1. Turn off the hot and cold water supplies to the
valve.
2. Carefully remove the concealing cap from the
control lever.
3. Loosen the control lever grubscrew with the
2.5 mm hexagon key (supplied) and pull off
the control lever.
Note! The control lever must be in the off
position in order to remove it.
4. Unclip the concealing plate from the
backplate.
5. Using a 12 mm hexagonal key or 'O' key
unscrew the lter caps.
Note! Care should be taken to ensure any
residule water does not enter the wall.
6. Remove the lters and ush out any debris
with clean water.
Note! If the filter is damaged it must be
replaced.
7. Install the lters and cap.
8. Turn on the water supplies and check for
leaks
Grubscrew
2.5 mm Hexagonal
Key
Concealing Cap