Mira Mode 1.1980.001 User manual

Mira Mode
Digital Shower / Bathller
Installation and User Guide
Please leave these instructions with the user
1479399

Thank you for purchasing a Mira Mode. 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 6
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 21
Installation
Digital Mixing Valve page 22
Ceiling Fed Shower Fittings page 26
Ceiling Fed Deluge Head page 30
Rear Fed Shower Fittings page 33
Rear Fed Deluge Head page 38
Bath Filler page 40
User Controller page 43
Commissioning & Starting the shower page 46
Using the Shower page 52
Set Up: Controller page 53
Bathll Preset Adjustment page 55
User Interface Function Guide page 56
Accessories page 56
Set Up: Mobile App page 57
Fault Diagnosis page 58
Cleaning & Maintenance page 64
Back Page page 68

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.
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.
7. DO NOT install the digital mixing valve or user controller in areas
with high humidity and temperature (e.g. steam rooms and
saunas).

4
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.
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 operate the product if it is thought to have been exposed
to freezing conditions. Isolate electrical and water supplies to
the product and contact Kohler Mira Ltd.
13. 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.
14. 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.
15. DO NOT allow children to play with the product.
16. DO NOT allow children to clean or perform any user maintenance
without supervision.
17. Children under 8 must be supervised when bathing or showering.
18. 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.

5
19. 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.
20. Always check the water temperature is safe before bathing or
showering.
21. 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.
22. DO NOT use excessive force when making connections.
23. Avoid layouts where the shower hose will be sharply kinked.
This may reduce the life of the hose.
24. 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.
25. DO NOT operate the valve at voltages other than that stated on
the rating label.
26. This appliance is only to be used and supplied at SELV (Safety
Extra Low Voltage) using only the supplied detachable power supply
unit.
27. The supply cord of the power supply unit cannot be replaced. If
the cord is damaged the power supply must be replaced.
28. 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.

6
Pack Contents
Digital Mixing Valve
Digital Mixing Valve Pumped/Gravity
2 x Push-Fit Isolators
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
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)

7
Ceiling Fed Shower Fitting
Digital Mixing Valve High Pressure/Combi 1 x Plastic Pipe
2 x Spacers
2 x Brackets
1 x Extension
2 x Wall Plugs
1 x Hex Key,
3mm
2 x 45 mm Screws
2 x Hex Screws
1 x Hose
2 x Rubber Washers
1 x Handset
1 x Retaining Ring
2 x Slide Bar Supports
1 x Slide Bar
1 x Elbow
1 x Clamp Bracket
1 x Ceiling Plate
2 x 70 mm Screws

8
Rear Fed Shower Fitting
1 x Cover Cap
1 x Fixing
Bracket
1 x Slide Bar
1 x Hex Key
2.5mm
1 x Clamp
Bracket
2 x Rubber Washers
1 x Hose
1 x Handset
1 x Hose
Retaining Ring
1 x Right Angled
Connector
1 x Screw
3 x Wall Plugs
3 x Fixing Screws 1 x O Seal
1 x Slide Bar
Supports

9
Important! Some parts may di󰀨er from the below depending on product purchased.
Interface
1 x Backplate
1 x Interface
1 x Coupler Cable
1 x Interface Lead
1 x Component Pack
(Includes 1.5mm hex key)
1 x Installation Template

10
Ceiling-Fed Deluge Head
1 x Concealing Plate
1 x Elbow
1 x Brazed Pipe
Assembly
1 x Chrome
Supply Tube
1 x Ceiling
Mount Plate
Assembly
Dual Only
1 x Deluge Head
1 x Core Removal Tool
1 x Rain Core
Mira Maxim ONLY
1 x Deluge Head

11
Rear Fed Shower Arm and Deluge Head
1 x Concealing Shroud
1 x Deluge Head
1 x Backplate
Assembly
1 x Shower Arm
2 x Wall Plugs
2 x Fixing Screws
Dual Only
1 x Core Removal Tool
1 x Rain Core
Mira Maxim ONLY
1 x Deluge Head
Bath Filler
2 x Clips
1 x Waste
Assembly
1 x Filler
1 x Hose

12
Guarantee
The Mira Mode 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 Mode 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 Mode 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’ section.
Products Covered
Domestic Light Commercial 
Heavy Commercial Healthcare 
Recommended Usage
Product Name Product
No.
Product
Code
Type 2
Designation
Mira Mode Rear Fed Shower (High Pressure / Combi) 1.19 80.0 01 N90AMr HP-S
Mira Mode Rear Fed Shower (Pumped) 1.19 80.0 02 N90FMr LP-S
Mira Mode Ceiling Fed Shower (High Pressure / Combi) 1.19 80.0 03 N90AMc HP-S
Mira Mode Ceiling Fed Shower (Pumped) 1.198 0.0 0 4 N90FMc LP-S
Mira Mode Dual Rear Fed Shower (High Pressure / Combi) 1.19 80.0 05 N90BMr HP-S
Mira Mode Dual Rear Fed Shower (Pumped) 1.19 80.0 0 6 N90GMr LP-S
Mira Mode Dual Ceiling Fed Shower (High Pressure / Combi) 1.19 80.0 07 N90BMc HP-S
Mira Mode Dual Ceiling Fed Shower (Pumped) 1.19 80.0 0 8 N90GMc LP-S
Mira Mode Bath (High Pressure / Combi) 1.1980.009 N90AMb HP-T44
Mira Mode Bath (Pumped) 1.19 80.010 N90FMb -
Mira Mode Dual Bath / Shower (High Pressure / Combi) 1.19 80.011 N90BMb HP-S
Mira Mode Dual Bath / Shower (Pumped) 1.1980.012 N90GMb LP-S, LP-T44
Mira Mode Maxim Rear Fed (High Pressure / Combi) 1.1980.013 N90BMrm HP-S
Mira Mode Maxim Rear Fed (Pumped) 1.198 0.014 N90GMrm LP-S
Mira Mode Maxim Ceiling Fed (High Pressure / Combi) 1.19 80.015 N90BMcm HP-S
Mira Mode Maxim Ceiling Fed (Pumped) 1.19 80.016 N90GMcm LP-S
Patents and Design Registration
Granted Patents: GB2568271B, GB2579960B, GB2549971B
Granted Design Registrations:
90027795380003, 90027795380002, 90031549390001,
90031549390002, 90031549390003, 90031549390004,
90031549390005

13
Specifications
Standards and Approvals
The Mira Mode complies with all applicable UK & EU regulations & directives. The Mira Mode
is a type 1 electronic, independently mounted control for surface mounting. Mira Mode is a
thermostatic water mixing valve.
The digital valve is 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
Temperature Stability at Valve Outlet ± 1°C at recommended supply conditions
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 detailed 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
Temperature Stability at Valve Outlet ± 1°C at recommended supply conditions
Ambient Temperature 1°C - 50°C
Maximum Relative Humidity 95% non-condensing at 30°C
Flow Rates
Nominal Flow Rate
Default ow rate - 12 L/min for showering
products, 16 L/min for bath ller products.
The Single Outlet Digital Valve can deliver
12 L/min maximum ow at 0.1 bar.
The Dual Outlet/Bath Filler Digital Valve can
deliver 16 L/min maximum ow at 0.1 bar.
Switch Handset products can deliver 10 L/min at
0.1 bar (with ow reg removed).
Deluge Overhead products can deliver 12 L/min
at 0.1 bar.
All pressures refer to maintained pressure at
valve inlets*.
Flow Rates
Nominal Flow Rate
Default ow rate - 12 L/min for showering
products, 16 L/min for bath ller products.
The Digital Valve can deliver 16 L/min maximum
ow at 1 bar.
Switch Handset products can deliver 10 L/min at
1 bar (with ow reg removed).
Deluge Overhead products can deliver 16 L/min
at 1 bar.
All pressures refer to maintained pressure at
valve inlets*.

15
*Note: If your water system is not capable of delivering minimum maintained pressure
(pressure during product operation) 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.
Please ensure you have the minimum required maintained pressure at the valve inlets
before installation. If you do not meet the required minimum maintained pressure
check your water system specification and pipework for restrictions, excessive
lengths and excessive bends.
Note: Valves operating outside of the manufacturers recommended conditions of
use cannot be guaranteed to operate as TMV2 Type 2 valves.
User Control
Electrical Supply 12V DC SELV 2W Max
Ingress Protection IP X4
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.
Valve Inlet 15mm Push Fit Plastic (Push Fit Isolator supplied)
Valve Outlet 15mm Push Fit - see below (Straight connector supplied)
Overhead (Ceiling Fed or Rear Fed) 15mm Copper
Handset Supply Pipe (Ceiling Fed) 15mm Push Fit Plastic or Copper (Elbow Supplied)
Right Angled Connector (Rear Fed) 15mm Copper
Bathller 15mm Copper
Bathller Waste (Trap Connection) 1-1/2” (Not supplied)
Electrical Rating
Supply Voltage 100V - 240V AC 50/60Hz
Maximum Load 80W
Output Supply Voltage to Valve 12V DC & 24V DC

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 outlet 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
Note: The Switch shower handset is ow regulated to 12 L/min. Regardless of
your mixing valve settings or water system capabilities, the ow rate achievable
through this handset is limited to 12 L/min.
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 outlet 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.
*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
Mira Mode Dual Ceiling Fed Shower
Max. Cable
length 9.8m
Max. Cable
length 9.8m
Ceiling Fed
Rear Fed
Product Name Outlet 2 (left hand outlet) Outlet 1 (right hand outlet)
Mira Mode Single Outlet Product Not Applicable Handset/Overhead/Bath ller
Mira Mode Dual Outlet Product Overhead Handset

20
Mira Mode Dual Bath / Shower
Rear Fed
Max. Cable
length 9.8m
Product Name Outlet 2 (left hand outlet) Outlet 1 (right hand outlet)
Mira Mode Dual Bath/Shower
Product Bath ller Handset