Mira Platinum User manual

Mira Platinum
Digital Shower
Installation and User Guide
Please leave these instructions with the user
1514415-W2-A

Thank you for purchasing a Mira Platinum. You must read this guide
thoroughly, and having done so, keep it handy for future reference.
For step-by-step installation videos, datasheets or spares information,
please visit the Mira Showers website.
Contents
Important Safety Information page 3
Pack Contents page 7
Guarantee page 12
Recommended Usage page 12
Products Covered page 12
Patents and Design Registration page 12
Specications  page 13
Suitable Plumbing Installations page 16
Showering Maximum Flow Rate page 18
Installation Schematic page 19
General Installation page 20
Installation
Digital Mixing Valve page 21
Ceiling Fed Shower Fittings page 28
Rear Fed Shower Fittings page 32
Deluge Overhead page 37
User Controller page 42
Commissioning page 43
Using the Controller page 47
User Controller: Features page 48
Set Up: Mobile App page 52
Set Up: WiFi Connection page 54
Fault Diagnosis page 55
Accessories page 60
Cleaning & Maintenance page 60
Customer Service page 64

3
Important Safety Information
Products manufactured by Kohler Mira Ltd. are designed to be safe, provided that they are
installed, used and maintained in good working order, in accordance with our instructions
and recommendations. Follow all warnings, cautions and instructions contained in this guide,
and on, or inside the product. Failure to follow the instructions provided with this product
will invalidate the guarantee.
Warning! To reduce the risk of re, electric shock or injury please read the important
information listed below.
Warning! This appliance contains magnets. Users tted with a heart pacemaker or
ICD should follow their normal safety precautions for products that contain magnets.
The magnets are located in the User Controller and Cradle. There are no magnets in
the showerhead.
1. Installation of this product must be carried out in accordance
withtheseinstructionsbyqualied,competentpersonnel.Read
all instructions before commencing installation.
2. The electrical installation must comply with BS 7671 (commonly
referred to as the IET Wiring Regulations) and all relevant
building regulations, or any particular regulation or practice
speciedbythelocalelectricitysupplycompany.
3. The plumbing installation must comply with all national or local
water regulations and all relevant building regulations, or any
particular regulation or practice specied by the local water
supply company.
4. Isolate the electrical and water supplies before commencing
installation.
5. For any copper pipework ensure supplementary bonding is
provided in accordance with the wiring regulations.
6. A 30mA Residual Current Device (RCD) must be included in the
electrical circuit. This may be part of the consumer unit or a
separate unit.

4
7. DO NOT install the digital mixing valve or user controller in areas
with high humidity and temperature (e.g. steam rooms and
saunas).
8. DO NOTinstallthedigitalmixingvalveorttingswheretheymay
be exposed to freezing conditions. Ensure that any pipework
that could become frozen is properly insulated. Refer to ‘General
Installation’ section for more information.
9. DO NOTperformanyunspeciedmodications,drillorcutholes
in the product other than instructed by this guide. When servicing
only use genuine Kohler Mira replacement parts.
10. If the product is dismantled during installation or servicing then,
upon completion, an inspection must be made to ensure all
electrical connections are secure and that there are no leaks.
11. DO NOT operate the product if water is leaking from inside the
valve module. Isolate electrical and water supplies to the product
and refer to the fault diagnosis section.
12. DO NOT allow the digital mixing valve to freeze. Isolate and drain
down the valve if the property is being left for a period of time
during winter. You may need to contact a plumbing professional
to carry out this procedure.
13. DO NOT operate the product if the digital mixing valve has been
exposed to freezing conditions. Internal damage may have
occurred, which may result in a leak once the product has
thawed. Isolate the power and water to the digital mixing valve
and slowly allow to thaw (e.g. open the loft hatch to warm the loft
space). Slowly un-isolate the water supply, and if no sign of
leaks, re-power the digital mixing valve and check for normal
operation. It is recommended to monitor the digital mixing valve
periodically and check for leaks. If you are concerned or unsure,
please contact a plumbing professional.
14. Make sure that you fully understand how to operate this shower
and make sure that it is properly maintained in accordance with
the instructions given in this manual.

5
15. This product can be used by children aged from 8 years and
above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have
been given supervision or instruction concerning the use of the
appliance in a safe way and understand the hazards involved.
16. DO NOT allow children to play with the product.
17. DO NOT allow children to clean or perform any user maintenance
without supervision.
18. Children under 8 must be supervised when bathing or showering.
19. The water temperature needs to be set at a suitable temperature
(body temperature is approximately 38°C). Babies and Children are
more sensitive to temperature than adults and it is recommended
to check the delivered water temperature is less than 37°C.
20. The maximum mixed water temperature from the product is
48°C to take into account losses in metal baths. It is not a safe
bathing or showering temperature.
21. Always check the water temperature is safe before bathing or
showering.
22. DO NOT remotely operate or alter any of this product’s shower
and bathing settings if it is already occupied and / or being used
by another person.
23. DO NOT use excessive force when making connections.
24. Avoid layouts where the shower hose will be sharply kinked.
This may reduce the life of the hose.
25. Thepositionoftheshowerttingsmustprovideaminimumairgap
of 25mm between the handshower and the spill over level of any
bath, shower tray or basin. There must be a minimum distance of
30mm between the handshower and the spill over level of any toilet,
bidetorotherappliancewithaFluidCategory5backowrisk.
26. DO NOT operate the valve at voltages other than that stated on
the rating label.

6
27. This appliance is only to be used and supplied at SELV (Safety
Extra Low Voltage) using only the supplied detachable power
supply unit.
28. The supply cord of the power supply unit cannot be replaced. If
the cord is damaged the power supply must be replaced.
29. In the event of a cold water failure, the product is designed to
reducetheow.Dependingonthetemperatureofthehotwater,
the valve may shut down to prevent scalding.
30. Warning! Never remotely operate or alter any of the Mira
Platinum shower settings if it is already occupied/being used
by another person or you are not within the vicinity of the
outlet. This could result in ooding of the shower cubical or
scalding of the user.

7
Pack Contents
Digital Mixing Valve
Digital Mixing Valve Pumped/Gravity
2 x Push-Fit Isolators
(15mm Pipework Only)
1 or 2 x Outlet Connector
(Depending on number
of outlets)
3 x Wall Plugs
3 x Fixing Screws
2 x Pozi Screws
(3.5 x 12mm)
2 x Fixing Feet
2 x Fixing Feet
2 x Push-Fit Isolators
(15mm Pipework Only)
1 - 2 x Outlet Connector
(Depending on number
of outlets)
3 x Wall Plugs
3 x Fixing Screws
1 x Power Supply
Digital Mixing Valve
1 x Power Supply
Digital Mixing Valve High Pressure/Combi
2 x Pozi Screws
(3.5 x 12mm)

8
Ceiling Fed Shower Fitting
2 x Brackets
1 x Ceiling
Plate
1 x Slide Bar
Assembly
1 x Showerhead
1 x Chrome Supply Tube
1 x Elbow
2 x Spacers
1 x Plastic Pipe
1 x Hex Key
2 x 70 mm Screws
2 x 45 mm Screws
2 x Wall Plugs
2 x Hex Screws
1 x Installation Template
1 x Hose
2 x Rubber
Washers

9
Rear Fed Shower Fitting
1 x Slide Bar
Assembly
1 x Hex Key
2 x 45 mm Screws
2 x Wall Plugs
2 x Hex Screws
1 x Installation Template
1 x Hose
2 x Rubber
Washers
1 x Showerhead
2 x End Plugs
2 x Brackets
1 x Right Angled
Connector (RAC) Kit

10
Ceiling Overhead Fitting Kit (Dual Outlet models only)
1 x Ceiling Mount Plate
2 x Hex Screws
2 x Wall Plugs
1 x Ceiling Plate
1 x Olive
1 x Nut
1 x Chrome
Supply Tube
1 x Signature
Overhead
1 x Brazed Pipe

11
Rear Fed Overhead Fitting Kit (Dual Outlet models only)
User Controller
1 x User Controller 1 x Charging Cable
1 x Concealing Shroud
1 x Backplate
Assembly
1 x Signature
Overhead
1 x Shower Arm
1 x Fittings
Pack

12
Guarantee
The Mira Platinum has been designed for domestic use only, it is not recommended for
Commercial or Healthcare use. For domestic installations, Kohler Mira Ltd. guarantee the
MiraPlatinumagainstanydefectinmaterialsorworkmanshipforaperiodofveyearsfrom
thedateofpurchase(showerttingsforoneyear).
For non-domestic installations, Kohler Mira Ltd. guarantee the Mira Platinum against any
defect in materials or workmanship for a period of one year from the date of purchase.
Your guarantee is only valid if you follow the guidance within this installation and user
guide, including the ‘Cleaning and Maintenance’ and ‘General Installation’ section.
See the back page of this guide for more information.
Products Covered
Patents and Design Registration
Domestic Light Commercial 
Heavy Commercial Healthcare 
Granted Patents: GB2568271B, GB2579960B
Granted Design Registrations:
Recommended Usage
Product Name Product No. Product Code Type 2
Designation
Mira Platinum Rear Fed (High Pressure) 1.1981.001 N90A HP-S
Mira Platinum Dual Rear Fed (High Pressure) 1.1981.002 N90B HP-S
Mira Platinum Rear Fed (Low Pressure) 1.1981.004 N90F LP-S
Mira Platinum Dual Rear Fed (Low Pressure) 1.1981.005 N90G LP-S
Mira Platinum Ceiling Fed (High Pressure) 1.1981.007 N90A HP-S
Mira Platinum Dual Ceiling Fed (High Pressure) 1.1981.008 N90B HP-S
Mira Platinum Ceiling Fed (Low Pressure) 1.1981.010 N90F LP-S
Mira Platinum Dual Ceiling Fed (Low Pressure) 1.1981.011 N90G LP-S
Mira Platinum Valve and Controller Only
(High Pressure)
1.1981.013 N90A HP-S
Mira Platinum Dual Valve and Controller Only
(High Pressure) 1.1981.014 N90B HP-S
Mira Platinum Valve and Controller Only
(Low Pressure)
1.1981.015 N90F LP-S
Mira Platinum Dual Valve and Controller Only
(Low Pressure) 1.1981.016 N90G LP-S

13
Specications
Standards and Approvals
The Mira Platinum complies with all applicable UK & EU regulations & directives.
The Mira Platinum is a type 1 electronic, independently mounted control for surface mounting.
Mira Platinum is a thermostatic water mixing valve.
The digital valve and user controller are equipped with Bluetooth® wireless technology.
The Bluetooth® word mark and logos are registered trademarks owned by the
Bluetooth SIG, Inc. and any use of such marks by Kohler Mira Ltd is under license.
Other trademarks and trade names are those of their respective owners.
General
Pollution Degree 2
Rated Impulse Voltage 2.5 kV
Connections 15mmpusht
Suitability for Drinking Water Applications Not suitable
Solenoid Type Pilot operated
Water Connection Type Permanent
Mira Digital Mixing Valve High Pressure/Combi (not suitable for pumped gravity systems)
Pressures
Thermostatic Standard TMV 2 - HP-S (BS EN 1111 Type 2)
Maximum Static Pressure 1000 kPa (10 bar)
Maximum Maintained Pressure 500 kPa (5 bar)
Minimum Maintained Pressure 100 kPa (1 bar)
SupplyPressureDi󰀨erential Nominally equal
Temperatures
Maximum Temperature (setting range) 30°C - 48°C (Factory Preset 45°C)
Minimum Temperature Thermostatic control down to 30°C
Full Cold also selectable
Hot Water Range - Supply 55°C - 65°C
Cold Water Range - Supply 1°C - 20°C
Ambient Temperature 1°C - 50°C
Maximum Relative Humidity 95% non-condensing at 30°C
Electrical Rating
Supply Voltage 100V - 240V AC 50/60Hz
Maximum Load 38W
Output Supply Voltage to Valve 12V DC

14
Mira Digital Mixing Valve Pumped/Gravity (not suitable for mains pressure systems)
Caution! The pump in this product is not suitable for dry running. It is essential
you follow the commissioning sequence detail in this guide.
Pressures
Thermostatic Standard TMV 2 - LP-S (BS EN 1287 Type 2)’
Maximum Static Pressure 100 kPa (1 bar) 10m head
Maximum Maintained Pressure 100 kPa (1 bar) 10m head
Minimum Maintained Pressure 1 kPa (0.01 bar) 0.10m
SupplyPressureDi󰀨erential Nominally equal
Temperatures
Maximum Temperature (setting range) 30°C - 48°C (Factory Preset 45°C)
Minimum Temperature Thermostatic control down to 30°C
Full Cold also selectable
Hot Water Range - Supply 55°C - 65°C
Cold Water Range - Supply 1°C - 20°C
Ambient Temperature 1°C - 50°C
Maximum Relative Humidity 95% non-condensing at 30°C
Flow Rates
Nominal Flow Rate
Minimumowrate-6L/min
Under ideal system conditions:
Handset products can deliver up to 10 L/min at
0.1 bar maintained pressure*
Overhead products can deliver up to 16 L/min
at 0.1 bar maintained pressure*
Defaultowratetarget:12L/min
Maximumsettableowratetarget:16L/min
Flow Rates
Nominal Flow Rate
Minimumowrate-4L/min
Under ideal system conditions:
Handset products can deliver up to 10 L/min at
1 bar maintained pressure*
Overhead products can deliver up to 16 L/min
at 1 bar maintained pressure*
Defaultowratetarget:12L/min
Maximumsettableowratetarget:16L/min

15
User Control
Electrical Supply 3.7Vdc Internal Battery (rechargeable)
Ingress Protection IPX5
Maximum Ambient Temperature 40°C
Plumbing Connections
Use below pipework size and type to make connections as listed.
Warning! Use of incorrect pipe types or sizes may cause leaks. Supplied connectors
are NOT suitable for 1/2″ Pipework. You must use appropriate adapters (not supplied)
for 1/2″ pipework.
Valve Inlet 15mmPushtPlasticorCopper(Isolatorsupplied)
Valve Outlet 15mmPusht-seebelow(straightconnector
supplied)
Overhead (Ceiling Fed or Rear Fed Dual
Outlet products) 15mm Copper
Handset supply pipe from valve (Ceiling Fed
product) 15mmPushtPlasticorCopper(Elbowsupplied)
Right angled connector (Rear Fed product) 15mm Copper
*Note: Maintained (or dynamic) pressure is the pressure at the valve inlets during operation.
Someinstallationswillseeasignicantpressuredropinthesupplypipeworkwhenwateris
owing,especiallywhenlongplasticpipeworkandsmallborettingsareused.
It is recommended to keep supply pipework as short as possible, avoid unnecessary bends
andminimisethenumberofttingsthatareused.Forlongerpiperuns,itmaybenecessaryto
increase the nominal pipe size to reduce the pressure drop. Consult a plumbing professional
if you are unsure.
Ifyourplumbingsystemcannotmaintaintheminimumspeciedpressureatthevalveinlets,
youwillnotbeabletoachievetheowratesspecied,evenifyouincreasetheowrate
target of the product.
Electrical Rating
Supply Voltage 100V - 240V AC 50/60Hz
Maximum Load 80W
Output Supply Voltage to Valve 12V DC & 24V DC
Note: Valves operating outside of the manufacturers recommended conditions of use cannot
be guaranteed to operate as TMV2 Type 2 valves.

16
Suitable Plumbing Installations
Digital Mixing Valve (High Pressure/Combi Models)
1. Combination boiler systems - the digital high pressure/combi shower can be installed
with an instantaneous combination boiler.
2. Unvented mains pressurised system - the digital high pressure/combi shower can be
installed with an unvented, stored hot water cylinder system.
3. Mains pressurised instantaneous hot water heater - the digital high pressure/combi shower
can be installed with systems of this type with balanced pressures.
Caution! High pressure mixing valves must never be plumbed to gravity or pumped
gravity systems. This includes mixed gravity and mains pressure e.g. gravity hot
and mains cold. Doing so will invalidate the warranty and potentially cause product
and property damage.
Use of Warm-up Feature with Combination Boilers
When using the warm-up feature (see User Guide) with the digital mixing valve supplied via an
instantaneous water heater/combination boiler, the user may experience a brief temperature
uctuation.Thisiscausedbythenormaloperationofastandardinstantaneouswaterheater/
combinationboilerwherebytheboilerwillturno󰀨whentheowisstopped(as happens
after the warm-up sequence has been completed). Upon restart of the shower, a cold shot
willbeushedthroughfollowedbyabriefhotshotuntilthehotwatersupplyhasstabilised.

17
Digital Mixing Valve (Pumped/Gravity Models)
Gravity fed hot water systems
Caution! Digital pumped/gravity valves must never be plumbed to mains pressure
systems. This includes mixed gravity fed and mains pressure e.g. gravity hot and
mains cold. Doing so will invalidate the warranty and potentially cause product and
property damage.
The shower control must be fed from a cold water storage cistern and a hot water cylinder
providing nominally equal pressures. Pipework layouts and connections must be such that
otherdraw-o󰀨swillnote󰀨ectwatersuppliestotheshower,sharedsuppliesmayleadto
airlocking or water starvation. It is therefore best practice to have independent hot and cold
supplies to the digital mixing valve pumped/gravity.
Cold
Hot
Cistern
Minimum 230 litres
1.0 metre minimum
30° - 60°
Air Separation
Dual Outlet Digital Mixing Valve
(Pumped/Gravity)
Outlet 2
Outlet 1
Outlet 2
Outlet 1
Outlet 1
Cold
Cold
Cold
Hot
Hot
100mm from the
lowest level of the
water in the tank
to the top of the
product.

18
Combination Boilers
Note: The digital mixing valve can demand hot water quicker than some instantaneous
water heaters/combination boilers can provide, especially in winter when the mains water is
colder.Itisthereforepossiblethismixingvalvewillneedtohaveitsoutletowratealtered
to match the capability of the water system.
ThemaximumowratecanbealteredbyuseoftheMiraShowersapp.*
HighowratedemandedfromlowkWcombinationboilerswillresultinpoorblendtemperature
stability and could result in your shower going cold. We strongly recommend you to alter the
outletowrateasthetablebelow.
Showering Maximum Flow Rate
Gravity System
A gravity fed hot water cylinder has a finite amount of stored hot water. A standard
sizehotwatercylinder,e.g.230Litres,withstoredwaterheatedto65˚Cwilltypically
provide a showering duration of 30 minutes when the shower temperature is set to
mid-blend(approximately40˚C)andataflowrateof9l/min.Withtheflowratesetto
12 l/min it will reduce the total showering duration to typically 20 minutes.
Oncethestoredhotwaterhasbeendepleted,su󰀩cienttimewillberequiredforthehotwater
cylinder to reheat its stored water supply before additional showering time can take place.
ThemaximumowratecanbealteredbyuseoftheMiraShowersapp.*
ItmaybenecessarytoaltertheoutletowrateusingtheMiraShowersappifyourstored
hot water is running out too quickly. Alternatively reduce the outlet flow by decreasing
theowratewiththeusercontroller.
*Note: If your water system is not capable of delivering minimum maintained pressure at the
valveinlets,youwillnotbeabletoachievethemaximumowratefromyourshowereven
if adjusted via the Mira Showers app. Ensure you have the minimum required maintained
pressure at the valve inlets before installation.
Boiler Rating 24kW (80,000 Btu/h) 30kW (100,000 Btu/h) 36kW (120,000 Btu/h)
Outlet Flow Rate 8 l/min 10 l/min 12 l/min

19
Installation Schematic
Ceiling Fed
Products
Rear Fed
Products
Refer to page 23 for
controller placement.
Refer to page 23 for
controller placement.

20
Important Installation Considerations
• DO NOT site the digital valve where it may freeze, this may cause internal damage and
risk a major water leak after thawing.
• Ensure the valve is sited in an area where it meets an ambient temperature between 1°C
and50°Callyearround.Ifttedinaloftspace,considerationmustbemadetositeaway
fromfreezingairowe.g.notsitedagainstoutsidewall,closetoeavesorinanexposedroof.
• Remove any loft insulation directly below valve to allow warm air to rise from property
below and fully lag all exposed pipework. Advise the homeowner where the digital valve
is sited for future reference.
• Ensure pumped/gravity digital mixing valves showers are not connected to any mains
water pressure e.g. stored gravity hot water and cold mains water.
• Highpressure/combidigitalmixingvalvesshouldnotbettedtoagravityorpumped
gravity system.
• The digital mixing valve should not be installed where it can become frozen or be subjected
to ambient temperatures in excess of 50ºC.
• DO NOT use any type of jointing paste or compound on any pipework or fittings
supplying the digital shower valve. These can build up within the product and reduce
the performance or cause early failure.
• Only use Ø15 mm pipe, DO NOT use any other pipe sizes as this may result in leaking.
You mustuseappropriateadapters(notsupplied)for1/2″pipework.
• Position the digital mixing valve and power supply so that there is enough room for
maintenance(e.g.removalofthevalvelidandservicingltersthroughremovinginlet
pipework) and make sure safe and easy access is available at all times.
Caution! The inlet pipework must be exible enough to allow 25 mm movement
to enable lters to be removed for cleaning and for maintenance of the internal
components. Failure to achieve this may result in service and repair not being
able to be carried out.
General Installation
All installations shall comply with the Water Supply (Water Fittings) Regulations 1999, Water
Supply (Water Fittings) Regulations (Northern Ireland) 2009, and The Water Supply (Water
Fittings) (Scotland) Byelaws 2014.
Safe and easy access to the product should be available at all times.
When installing the product in an area not regularly accessed, consideration for potential
leaks must be taken into account. While such events are unlikely, it is advisable to periodically
check the installation for traces of water on or around the product.
If possible, site the product in a location where any leak would be contained or routed to
avoid areas sensitive to water damage.
Isolatingvalvesmustbeinstalledtobothinlets(supplied)anditisrecommendedtotisolators
on the outlet, close to the digital mixing valve for ease of maintenance.
The water supplies to this product must be isolated if the product is not to be used
for a long period of time. If the product or pipework is at risk of freezing during this
period they should also be drained of water.