rada Sense Shower T3 DMV User manual

1
IMPORTANT
Installer: This Manual is the property of the customer
and must be retained with the product for
maintenance and operational purposes.
PRODUCT MANUAL
Rada Sense Shower T3 DMV

2
CONTENTS
DESCRIPTION..........................................................................................3
SAFETY : WARNINGS .............................................................................3
PACK CONTENTS....................................................................................5
SPECIFICATION....................................................................................... 6
Standards and Approvals .....................................................................6
INSTALLATION.........................................................................................7
General................................................................................................. 7
Power Supply Unit (PSU) ....................................................................9
Rada Sense Control Panel ................................................................10
Rada Sense (DMV) ............................................................................ 11
OPERATION ...........................................................................................12
Duty Flush .......................................................................................... 12
Disinfection.........................................................................................12
COMMISSIONING ..................................................................................13
Maximum Temperature Setting .......................................................... 14
MAINTENANCE......................................................................................15
Planned Maintenance.........................................................................15
Cleaning ............................................................................................16
Checkvalves and Filters .....................................................................17
FAULT DIAGNOSIS................................................................................18
Self-Diagnostic Errors ........................................................................ 20
SPARE PARTS ....................................................................................... 21
ACCESSORIES ......................................................................................23
CUSTOMER SERVICE ...........................................................................24

3
A range of concealed 1/2” Digital Mixing Valves (DMV) with wall mounted no-touch
control panel for ow and temperature control. Functions include timed ow control,
duty ush and thermal disinfection.
The sufx ‘3’indicates that this Digital Mixing Valve has been certied for use in UK
Healthcare premises as a Type 3 valve under the BuildCert TMV3 scheme. For
Healthcare installation refer to the TMV3 Requirements Manual.
The approved designations for Type 3 Valves are as follows:
Model Designations
Rada Sense Shower T3 HP - S LP - S
DESCRIPTION
SAFETY : WARNINGS
The function of this DMV is to deliver water consistently at a desired temperature.
This requires that:
1. It is installed, commissioned, operated and maintained in accordance with the
recommendations given in this manual.
2. Periodic attention is given, as necessary, to maintain the product in good
functional order. Recommended guidelines are given in ‘MAINTENANCE’.
3. For Type 3 installations, valves are only to be used for applications covered by
their approved designations. Refer to the TMV3 Requirements Manual.
4. Using this product outside the specication limits given in this manual can
present potential risk to users.
5. The electrical installation must comply with BS 7671 (commonly referred to
as the IEE Wiring Regulations), all relevant national building regulations and
any particular regulations and practices specied by the local electricity supply
company.
6. DO NOT t any form of outlet ow control i.e. trigger handset. Use only
recommended ttings.
The use of the word ‘failsafe’ to describe the function of any mixing valve is both
incorrect and misleading. This electronic valve incorporates additional shut-off
devices to improve the level of safety however, in keeping with every other mechanism
it cannot be considered as being functionally infallible.

4
Where chlorine disinfection is practised, DO NOT exceed a chlorine concentration of
50 mg/l (ppm) in water, per one hour dwell time. Such procedures must be conducted
strictly in accordance with the information supplied with the disinfectant and with all
relevant Guidelines/Approved Codes of Practice.

5
PACK CONTENTS
1 x Shower Control Panel 
1 x Magnetic Key 
1 x Digital Mixing Valve (DMV) 
4 x Fixing Screws 
4 x Wall Plugs 
1 x Power Supply Unit (PSU) 
2 x Fixing Screws 
2 x Wall Plugs 
2 x Installation Templates 
(DMV Installation Template, on the Packaging)
6 x Rubber Feet 
1 x UK Rada Sense T3 Programmer CD 
1 x Suppression Ferrite 
1 x TMV3 Requirements Manual

6
Standards and Approvals
This Rada Sense Digital Mixing Valve (DMV) complies with all relevant directives
for CE marking.
The Rada Sense DMV is a type 1 electronic, independently mounted control for
surface mounting.
For Type 3 valves, the water supply conditions are specified in the TMV3
Requirements Manual.
General
Pollution Degree 3
Rated Impulse Voltage Mains Supply - 2.5 kV
12 V DC supply to valve - 500 V
Suitability for Drinking Not suitable
Connections Flat face union connections
Pressures
Maximum Static Pressure 1000 kPa (10 bar)
Minimum Pressure Loss 20 kPa (0.2 bar)
Supply Pressure Differential Max. 3:1 (Equal pressure recommended)
Minimum Flow Rate 4 L/min (<500 kPa maintained pressure)
6 L/min (>500 kPa maintained pressure)
Temperatures
Factory Pre-set (Blend) Washbasin Max. 41 °C, Min. 30 °C, Default at start-up 38 °C
Factory Pre-set (Blend) Bidet Max. 38 °C, Min. 30 °C, Default at start-up 36 °C
Factory Pre-set Duty Flush 41 °C (Default DISABLED - use Programmer Software to ENABLE)
Programmable Range Max. 33 - 50 °C
Min. 30 - 47 °C (full cold can also be selected)
Default at start-up 30 - 50 °C
Minimum Blend Temperature
Differential from Hot Supply
2 °C
Optimum Thermostatic
Control Range
30 - 50 °C
Cold Water Range 1 - 20 °C
Hot Water Range 50 - 65 °C (85 °C for disinfection)
Temperature Stability ± 1 °C at recommended supply conditions
Ambient Temperature Greater than 1 °C, max. 40 °C
Maximum Relative Humidity 95% non-condensing
Electrical
Supply Voltage 100 - 240 V RMS 50 - 60 Hz
Maximum Load 20 W at 12 V DC
Control Panel Cable Length 3 m supplied (6 m max.)
Times Factory Settings Programmable Range
Flow Time to Auto Shut-off 15 seconds 5 seconds to 60 minutes
Duty Flush Cycle 3 minutes 1 - 59 minutes
Duty Flush Waiting Time 12 hours 1 - 983 hours
Disinfection
Minimum Temperature 60 °C 60 - 85 °C
Minimum Time 5 minutes 0 - 50 minutes
Reduced Flow rate No Yes or No
The pressure loss of a system (valve and outlet tting) is the average of the two inlet pressures minus the back
pressure, where the back pressure is determined by the ow resistance of any outlet tting.
SPECIFICATION
*
*

7
General
Installation must be carried out in accordance with these instructions, be
conducted by designated, qualied and competent personnel.
The installation must comply with the “Water Supply (Water Fittings)
Regulations or Scottish Byelaws”, all relevant national building regulations
and any particular regulations and practices specied by the local water
supply company.
Before commencing, make sure that the installation conditions comply with the
information given in ‘SPECIFICATION’. For Type 3 valves, the water supply
conditions must comply with the information given in the TMV3 Requirements
Manual.
Installation Schematic
Note! The Data Cable must be placed through the Suppression Ferrite and then
looped around the cover. The Suppression Ferrite must be tted as close to the
Control Panel as possible.
INSTALLATION
Metal pipework
must be
earth bonded
3 amp switched
fused spur box
Control panel
PSU
DMV
Showerhead
Outlet
Hot
inlet
Cold
inlet
To mains power supply
Suppression Ferrite,
refer to Note.

8
Outlet
Hot inlet
Cold inlet
Outlet
Hot inlet
Cold inlet
Outlet
Hot inlet
Cold inlet
Mounting on a
Vertical Surface
Mounting on a
Horizontal Surface
1. The DMV and PSU must be installed in a dry area and where it will not freeze.
2. The DMV must be installed in an area where it is accessible to do any
maintenance tasks e.g. removal of the cover, cleaning the strainers, etc.
3. Inlet and outlet isolating valves must be installed close to the DMV for ease of
maintenance.
4. Flat face union connections must be used on the inlet and outlet connections
of the DMV for ease of maintenance.
5. The use of supply-line or zone strainers will reduce the need to remove debris at
each mixing valve point. The recommended maximum mesh aperture dimension
for such strainers is 0.5 mm.
6. Inlet pressure tappings which allow measurement of the inlet pressures to
the mixing valve under operating conditions are particularly recommended for
healthcare applications.
7. Pipework must be rigidly supported and avoid any strain on the connections.
8. Pipework dead-legs should be kept to a minimum.
9. Supply pipework layout should be arranged to minimise the effect of other outlet
usage upon the dynamic pressures at the mixing valve inlets.
10. Inlet and outlet threaded joint connections should be made with PTFE tape or
liquid sealant. Do not use oil-based, non-setting joint compounds.
11. To eliminate pipe debris it is essential that supply pipes are thoroughly ushed
through before connection to the spout and to the Rada Sense DMV.
12. The DMV MUST be installed in the orientations shown and mounted on a rigid
vertical surface or on top of a rigid horizontal surface.
Note! If the DMV is installed in a different orientation to those shown above, it may
cause the DMV to malfunction e.g. cause airlocks, water ingress and could effect
the thermal performance of the DMV.

9
Power Supply Unit (PSU)
Warning! Isolate mains power supply before starting installation. The PSU must be
connected to a 3 amp switched fused spur box.
1.5 m cable
3.0 m cable
Fixing screws (2 off)
0.5 m cable
Outlet
Hot inlet Cold inlet
Outlet
Hot inlet
Cold inlet
The DMV MUST NOT be installed in the orientations shown below.
13. For the installation of your spout, refer to the Sense Spout Kits Installation
Manual.

10
Template
Caution!
Do not trap the data cable,
Remove excess sealant.
Caution!
Make sure Silicone Sealant is applied in the groove on
the back of the Control Panel to stop water ingress into
the data cable access hole in the nished wall.
1 2
3 4
5 6 7
Rada Sense Control Panel
Note! If the data cable is installed within a stud partition or recessed into a wall, make
sure it is placed within a suitable conduit to allow easy removal during servicing.
The Control Panel must only be installed onto a at wall surface.

11
Short Cable
Connection
for the
Control Panel
PSU Cable
Connection
Moulded Grommet
Template
Note! After installing the PSU and
Control Panel cables, if necessary,
carefully push the wires between the
grommet and connector to one side.
1 2
3
4
5
Cable from
the DMV
Cable from the
Control Panel
7
Outlet
Hot Inlet
Cold Inlet
8
6
9
Rada Sense (DMV)

12
OPERATION
Position your hand anywhere in front of the control panel to activate the DMV. Water
is delivered at the default temperature, refer to ‘SPECIFICATION’.
Note! The sensors are designed to operate at a distance of up to 30 mm. There is
no need for the user to touch the control panel.
Position your hand over the Down arrow to obtain a cooler mix. When only the blue
light is illuminated on the control panel, then only cold water is being supplied. If
the blue light is ashing, then the minimum preset temperature is being delivered.
Position your hand over the Up arrow to obtain a hotter mix.
Note! Adjusting the temperature automatically resets the owtime.
The water should ow until either it is switched off manually (by positioning your
hand over the central logo, ‘Flow sensor’) or the programmed ow time duration
has elapsed.
Duty Flush (Default DISABLED - use Programmer Software to ENABLE)
The DMV incorporates an option for duty ush which can be selected with the aid
of a Programmer. If duty ush is selected and the DMV is not used for a period of
time (pre-set waiting period) the standing water within the DMV will be ushed out.
Duty ush temperature, waiting period and ush period are preset at the factory.
These settings can be reset, refer to the Rada Sense Programmer Software
Manual.
Disinfection
The DMV incorporates an option for disinfection which can be selected with the
aid of a Programmer. The default disinfection settings can be reset, refer to the
Rada Sense Programmer Software Manual.
Programming window
Flow sensor
Down arrow Up arrow
LED’s indicating
temperature selection

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COMMISSIONING
Commissioning must be carried out in accordance with these instructions,
and must be conducted by designated, qualied and competent personnel.
Note! For Healthcare Installations, all results must be recorded.
1. Restore the water supply and check that there are no leaks.
2. Restore the power supply.
3. Position your hand over the ow sensor (indicated by a tap) on the control panel
to start the DMV, to ush out any air.
4. Check the supply temperatures and pressures are within the range stated in
‘SPECIFICATION’and the guidance information on the prevention of legionella.
5. For Type 3 installations, check that the designation of the DMV matches
the application. The supply pressures and temperatures are within the
permitted range for the application. Refer to ‘SPECIFICATION’ and the TMV3
Requirements Manual.
6. Check inlet pipework temperatures for correct function of checkvalves
i.e. the hot water does not cross ow into the cold water supply.
7. Check that the temperature(s) and ow rates obtainable are acceptable.
8. Carry out a performance check:
Healthcare
Isolate the cold water supply to the mixing valve and monitor the mixed water
temperature. Record the maximum temperature achieved and the nal stabilised
temperature on restoration of the cold water supply.
Note! The nal stabilised mixed water temperature should not exceed 43 °C.
Any higher temperatures should only occur briey.
Commercial
Locate another outlet on the common cold water supply close to the mixing valve
(operating this outlet should cause a drop in supply pressure), and note the
subsequent effect on blend temperature (should be no more than 2 oC change).

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Maximum Temperature Setting
The maximum blend temperature obtainable by the user is limited to prevent
accidental selection of a temperature that is too hot.
The DMV is fully performance tested and the maximum temperature is factory preset,
refer to ‘SPECIFICATION’.
Provided that the installation conditions comply with the operating parameters given
in ‘SPECIFICATION’, the maximum temperature should not require adjustment. For
Type 3 valves, the maximum blend temperature is determined by the application.
Refer to the TMV3 Requirements Manual.
Should the user require to change the Default, Minimum, Maximum Temperatures
or the Flow Times, refer to your Rada Sense Programmer Software Manual.
Caution! The outlet temperature must be re-checked after a new temperature has
been programmed.
Note! The Rada Sense Programmer CD supplied, is designed to run on
Microsoft Windows 98/NT/2000/XP operating systems. The programmer software
is designed to run on Microsoft Pocket PC 2002 and Microsoft Mobile Windows for
Pocket PC 2003. Refer to your Rada Sense Programmer Software Manual.

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MAINTENANCE
Planned Maintenance
Malfunction of Thermostatic Mixing Valves is almost always progressive in nature
and will be detected by the use of proper temperature checking and maintenance
routines.
Certain types of system can result in the valve having excessive ‘dead-legs’ of
pipework, or auxiliary cold water supply added to the mixed water from the valve.
Such systems can disguise the onset of thermostatic mixing valve malfunction and
should not be used.
We recommend a preventative maintenance procedure based on site conditions
and the risk to the user. All results must be recorded in a log book.
Healthcare
Healthcare applications are hospitals, aged person facilities, residential care homes,
etc. and any other applications where the user is similarly at risk.
Ultimately, the user or attendant must exercise diligence to make sure that the de-
livery of warm water is at a stable, safe temperature. This is particularly important
in such procedures as supervised bathing where patients are unable to respond
immediately to unsafe temperatures.
For Type 3 valves, refer to the TMV3 Requirements Manual for information and
guidance on in-service testing.
Commercial
Check for correct blend setting every 6 months.
Follow the TMV3 in-service test procedure every 12 months. Refer to the TMV3
Requirements Manual.
Critical Components
Irrespective of supply and usage conditions or the evidence of in-service tests, critical
components should be replaced at intervals of no more than 5 years.
Pack Number Description
463.31 DMV Solenoid manifold (Open)
463.08 Single Thermistor pack
Note! During the replacement of critical components, it may be necessary to replace
other non-critical components.

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Cleaning
The Rada Sense Control Panel may be temporarily disabled for cleaning purposes.
Place the magnetic key (supplied) over the programming window. This will disable
the sensors for 30 minutes or until the magnetic key is reapplied.
External surfaces may be wiped clean with a soft cloth, and if necessary, a mild
washing-up type detergent or soap solution can be used.
Caution: Plated or plastic ttings should only be cleaned using a mild washing up
detergent or soap solution and wiped dry with a soft cloth.

17
Checkvalves and Filters
Warning! The DMV may contain hot water, so care must be taken when draining the
valve of any residual water. Isolate the supplies to the DMV and operate the control
panel to release pressure and to assist the draining of residual water.
Note! The DMV have checkvalve and filter packs (cartridge assemblies) or
checkvalves and strainers tted. These components can be removed for cleaning.
Inlet strainers can be ushed through under a jet of water to remove any lodged
particles.
Caution! The checkvalves are not serviceable items, so any apparent wear or
damage will require their renewal.
Note! Make sure all components are clean before retting the ‘O’ seals. To assist in
retting, lightly wipe the ‘O’ seals with a silicone based lubricant.
Restore the hot and cold water supplies. Check that there are no water leaks.
Inlet adapter
Cartridge
assemblies
Checkvalve
Inlet strainer
Inlet adapter
Inlet adapter
Cartridge
assemblies
Checkvalve
Inlet strainer
Inlet adapter
1 2
3 4
5

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FAULT DIAGNOSIS
Maintenance must be conducted by designated, qualified and competent
personnel.
Warning! Isolate power supply and water supply when any maintenance work is
carried out on the DMV.
The DMV may contain hot water, so care must be taken when draining the DMV of
any residual water.
Caution! The inlet/outlet connections on the DMV, must be held tightly so that they
do not move, when the connections are being loosened or tightened.
Symptom Cause/Rectication
1. Control Panel
not illuminated.
a. Check that you have the correct control panel or DMV
for your application.
b. Control panel has been disabled : enable the control
panel with the magnetic key, refer to ‘Cleaning’.
c. The mains electricity has been disabled : check and
rectify.
d. The power supply unit has been disabled : check the
fuse and connections.
e. Electrical connections to/from the DMV have been
disturbed : make sure the connections are secure.
f. Memory requires resetting : switch the power supply to
the electronic mixing valve, OFF and then ON.
2. Only cold water
from outlet.
a. No hot water reaching mixing valve : check and
rectify.
b. The hot water inlet may be blocked : check strainer for
any blockage.
c. Installation conditions are outside the operating
parameters : refer to ‘SPECIFICATION’.
d. Hot and cold feeds connected to the wrong inlets :
rectify.
3. Continuous ow. a. System switches itself on and off.
b. System will not switch off : isolate power supply/
water supply and contact your Local Agent/Customer
Services.
4. Hot water
entering the cold
supply, or vice
versa.
a. Remove and clean the checkvalve cartridges. Renew
as necessary.

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Symptom Cause/Rectication
5. Fluctuating or
reduced ow rate.
Normal function
of mixing valve
when operating
conditions are
unsatisfactory.
a. The inlet/outlet ttings may be restricted : check the
inlet/outlet strainers, refer to ‘MAINTENANCE’.
b. The water outlet pressure is low : check the ow rate is
above the stated minimum, refer to ‘SPECIFICATION’.
c. Fluctuating ow : make sure that dynamic inlet pressures
are within specication, refer to ‘SPECIFICATION’.
d. Fluctuating water temperature : make sure that
inlet temperature differentials are sufcient, refer to
‘SPECIFICATION’.
6. Blend
temperature drift
or temperature
cycling.
a. Refer to symptoms 4 and 5.
b. Hot water supply temperature uctuation : check and
rectify.
7. Maximum blend
temperature
setting too hot or
too cool.
a. Incorrect maximum temperature setting : refer to
‘COMMISSIONING’.
8. Water leaking
from the DMV.
Warning! Isolate mains electricity and water supply.
a. Check that the connections are secure.
b. Seal(s) worn or damaged on the inlet/outlet
connections : obtain service pack and renew all
seals.
c. Internal leakage : unit requires overhaul.
9. LED’s are
ashing on the
control panel and
the DMV will not
activate.
a. An error has been diagnosed, refer to Self-Diagnostic
Errors (following table).
10.The DMV keeps
switching OFF
before the
completion of the
programmed time
ow period.
a. Blend temperature too hot : Reset the DMV by switching
the power supply to the DMV OFF, then ON.
b. Make sure that the inlet temperatures are within
specication, refer to ‘SPECIFICATION’.
If the fault has not been rectied, contact your Local Agent
or Customer Care.

20
Self-Diagnostic Errors
Symptom Cause/Rectication
The Control Panel and the DMV are not compatible.
a. DMV W or B requires CP W: check and rectify.
If the symptom has not been rectied, contact your Local
Service Engineer or Agent.
or
Outlet Temperature is too high or Thermistor fault.
a. The inlet/outlet ttings may be blocked: check the inlet/
outlet strainers
b. Cold water supply failure: reinstate supply
c. Safety circuit may require resetting: enable the control
panel with the magnetic key to reset.
If the symptom has not been rectied, contact your Local
Service Engineer or Agent.
Thermistor fault.
a. Contact your Local Service Engineer or Agent.
The Stepper Motor is stuck, the motor belt is broken or the
Mixer assembly is jammed.
a. Contact your Local Service Engineer or Agent.
The Mixer assembly is jammed or very stiff.
a. Contact your Local Service Engineer or Agent.
Any other
combinations.
A fault has occurred on the Control PCB.
a. Memory may require resetting: switch the power supply
to the PSU, OFF then ON.
If the symptom has not been rectied, contact your Local
Service Engineer or Agent.
All three LED’s ash at the same time
Error code is displayed by a combination of lit LED’s