Kohler Mira Advance 8.7 User manual

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Installation Guide
These instructions must be left with the user
THERMOSTATIC
ELECTRIC SHOWER
Mira Advance
8.7 and 9.8 kW
For SPARES,
ADVICE or REPAIRS
please call us free on
0800 001 4040
(UK only)

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WARNING - This shower can deliver scalding temperatures, cause
re, electric shock or other personal injury if not operated, or
maintained in accordance with the instructions, warnings and
cautions contained in this guide and on the appliance.
Please read the important safety information and the operation section
of this guide before using the shower. Failure to follow the instructions
provided with this shower will invalidate the guarantee.
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY:
1. Children younger than 3 years should not use this shower. Children
3 years to under 8 years should only use this shower under
continuous supervision. Children aged 8 years and above and
persons with reduced physical, sensory or mental capabilities or
lack of experience or knowledge can use the shower if they are
given supervision or instruction concerning use of the appliance
in a safe way and understand the hazards involved.
2. Children shall not be allowed to play with the shower.
3. DO NOT restrict the water ow from the shower outlet, temporarily
bending the shower hose or blocking the shower head while in use
can cause a hot shot of water to be discharged.
4. Cleaning and user maintenance shall not be made by children
without supervision.
5. The outlet must not be connected to any tap or tting other than
those specied.
6. The showerhead must be descaled regularly. Any blockage of the
showerhead or hose can cause damage to the shower.
7. Warning! DO NOT switch on if there is a possibility that the water
in the heater is frozen.
8. The shower must be provided with means for local disconnection
from the supply mains having a contact separation in all poles
that provide full disconnection under overvoltage category III,
the instructions state that means for disconnection must be
incorporated in the xed wiring in accordance with the wiring rules.
Important Safety Information

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9. Installation of the shower must be carried out in accordance with
these instructions by qualied, competent personnel. Read all
instructions before installing the shower.
10.DO NOT switch the shower on if water starts leaking from the shower
case. Isolate the electrical supply to the shower immediately.
11.DO NOT switch the shower on if the case appears to be damaged
or incorrectly tted. Isolate the electrical supply to the shower
immediately.
12.DO NOT increase the power setting or adjust the temperature
control rapidly while using the shower.
13.DO NOT switch the shower o󰀨 and back on while standing in the
water ow.
14.DO NOT change the handset model. Fit only shower heads
recommended by Mira and do no t any additional device to restrict
the water outlet ow.
15.When adjusting the handset mode, point handset away from body
and make sure that the water temperature has stabilised before
continuing to shower.
16.Use caution when altering the water temperature, always check
the temperature before continuing to shower.
17. Switch the shower o󰀨 at the electrical isolating switch when not in
use. This is recommended with all electrical appliances.
18.Installation of the shower must be carried out in accordance with
these instructions by qualied, competent personnel. Read all
instructions before installing the shower.
19.Isolate the electrical and water supplies before commencing
installation. The electricity must be isolated at the consumer unit
and the appropriate circuit fuse removed, if applicable. Mains
connections are exposed when the cover is removed.
20.DO NOT install the shower in areas with high humidity and
temperature (i.e. Steam rooms and saunas).
21.DO NOT install the shower where it may be exposed to freezing
conditions. Ensure that any pipework that could become frozen is
properly insulated.

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22.DO NOT connect the outlet of the shower to any tap, control valve,
trigger operated handset or showerhead other than those specied
for use with this shower as the outlet acts as a vent for the tank
body. Only Kohler Mira recommended accessories should be used.
23.DO NOT perform any unspecied modications, or drill or cut holes
in the product other than instructed by this guide. When servicing
only use genuine Kohler Mira replacement parts.
24.DO NOT connect this shower to a Waste Water Heat Recovery
System as this may cause unstable or scalding temperatures to
be delivered from the shower head.
25.Always check the water temperature is safe before entering the
shower.
26.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.
27.If the shower is dismantled during installation or servicing then,
upon completion, an inspection must be made to ensure all
electrical connections are tight and that there are no leaks.
28.This appliance is intended to be permanently connected to the
water mains and not connected by a hose set.
29.The water inlet of this appliance shall not be connected to a water
supply obtained from any other water heating system.
30.Warning! This appliance is not to be used to provide a potable
water supply.
30.Maximum Static Pressure is 1000 kPa (10 bar).
31.Minimum Dynamic Pressure is 50 kPa (0.5 bar),
For BEAB Care - 100 kPa (1 bar).
Decommissioning and Recycling
When this appliance 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. For more information
about recycling, please contact your local council o󰀩ce.

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If you experience any di󰀩culty with the installation or operation of your new
Advance Thermostatic Electric Shower, then please refer to 'Fault Diagnosis',
before contacting Mira Showers. Our contact details can be found on the back
cover of this guide.
Product Variant
Adjustable
Temperature
Limit
Extended
Lever
Control
Drain Pump
Compatible Model No.
Standard
8.7 kW    J09A
9.8 kW    J09D
Flex
8.7 kW    J09G
9.8 kW    J09K
Flex Extra 8.7 kW    J09N
Thank you for choosing a Mira shower. To enjoy the full potential of your new shower,
please take time to read this guide thoroughly, and keep it handy for future reference.
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 shower. This guide is also available in digital format from our website or
by contacting customer services.
Electrical and electronic devices contain a range of materials that can be
separated for recycling and used in new products. This product should
not be disposed of with your general household waste. When this product
has reached the end of its serviceable life please take it to a recognised
WEEE (Waste Electrical and Electronic Equipment) collection facility such
as your local civic amenity site for recycling. Your local authority or retailer
will be able to advise you of your nearest recycling facility.
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.
Introduction
Products Covered

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Domestic Light Commercial 
Heavy Commercial Healthcare 
This product is classied as suitable for Domestic and Light Commercial Use and
Healthcare, for installation in the UK only. For installation outside of the UK please
contact Mira Showers/Rada for advice on suitability.
Examples of Light Commercial use and Healthcare are given but not limited to those
shown below. The list is not comprehensive and circumstances may vary. If you are
unsure on the product’s suitability please contact Rada/Mira. For maximum user
safety in Light Commercial use and Healthcare, Rada strongly recommends that
only Thermostatic Electric showers be installed:
• Domestic = Household use in ordinary domestic premises
• Light Commercial = Residential Setting e.g. Accommodation covering student
let/halls, hotels, guest houses, hostels
• Heavy Commercial = Public Setting covering sport/leisure, Public/factory
washroom etc.
• Healthcare = Use of a product in a residential care home, health surgery,
hospital. Products must be BEAB ‘Caremark’ approved.
For domestic installations, Mira Showers guarantee the Mira Advance against
any defect in materials or workmanship for a period of two years from the date of
purchase (shower ttings for one year).
For non-domestic installations, Mira Showers guarantee the MiraAdvance 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 of this guide.
Recommended Usage
Guarantee

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Tick the appropriate boxes to familiarise yourself with the part names and to conrm
that the parts are included.
1 x Compression Nut
2 x Fixing Screws
2 x Wall Plugs
1 x Cover Insert
1 x Olive
OR
1 x Installation Guide
1 x User Guide
1 x Guarantee Card
1 x Mira Advance Standard 1 x Mira Advance Flex or Flex Extra
(Instantmatch by Whale®Pump supplied separately)
Documentation
1 x Quick Start Guide
1 x Installation Template
Pack Contents

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Plumbing Supply
Supply Source Mains pressure cold water only
Minimum Dynamic Pressure* 50 kPa (0.5 bar)
(100 kPa (1 bar) BEAB Care)
Maximum Dynamic Pressure 500 kPa (5.0 bar)
Maximum Static Pressure 1000 kPa (10 bar)
Minimum Static Pressure** 20 kPa (0.2 bar)
Maximum Inlet Temperature 30°C (20°C BEAB Care)
Minimum Inlet Temperature 2°C (5°C BEAB Care)
Inlet Connection ½" BSP male and 15 mm compression
tting.
Outlet Connection ½" BSP male fitting
Electrical Supply
Nominal Rating at 230 V 8.0 kW 9.0 kW
Nominal Rating at 240 V 8.7 kW 9.8 kW
Supply Fuse/Circuit Breaker 8.7 kW 40 Amps
9.8 kW 45 Amps
Residual Current Device RCD 30 mA
Supply Cable
No larger than 16 mm²
Note: Refer to current IEE regulations and
BS 7671 to determine minimum cable size.
Isolation Switch 45 Amp Double pole, with 3 mm contact
separation.
Maximum Ambient Temperature 30°C
Minimum Ambient Temperature 2°C
Ingress Protection Rating / IPX4 suitable for installation within Zone 1
Dimensions (shower unit)
Height 408 mm
Width 187 mm
Depth Flex : 112 mm , Standard : 105mm
* Recommended dynamic pressure of 100 kPa (1.0 bar) for full ow performance.
** Static pressure must never fall below 20 kPa (0.2 bar) when other draw o󰀨s are in use,
e.g. ushing toilet. This is the minimum pressure required to keep the ow valve closed.
Specications

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Decommissioning and Recycling
When these products reach the end of their serviceable life, if they are not being
replaced they should be decommissioned by qualied, competent personnel, and
the electrical and water installation made safe.
These products should not be disposed of with general household waste. They
should be taken to a recognised WEEE (Waste Electrical and Electronic Equipment)
collection facility such as your local civic amenity site for recycling.
Your local authority or retailer will be able to advise you of your nearest recycling
facility.
Product Information
Indicative annual electricity consumption (kWh), based upon 2100 Wh daily water
energy demand. Actual electricity consumption will depend on kW rating and the
duration and frequency of use.
8.7 kW 9.8 kW
Load Prole XS XS
E󰀩ciency Class A A
E󰀩ciency (%) 39.2 39.2
Daily Electricity Consumption (kWh) 2.159 2.157
Annual Electricity Consumption (kWh) 471 471
Sound Power Level (dB) 15 15
Standards and Approvals
The Mira Advance complies with the requirements of the BEAB Care Mark Standard
and the relevant directives for CE marking. The BEAB Care mark is invalid if the
product is not installed and used in accordance with the manufacturer’s specications
and instructions.
Hereby, Kohler Mira Ltd. declares that the radio equipment type Mira Advance
Flex Extra (J09N) is in compliance with Directive 2014/53/EU. The full text of
the EU declaration of conformity is available at the following internet address:
www.mirashowers.co.uk.
The Mira Advance Flex Extra (J09N) operates in the 2.4 GHz frequency band at a
maximum radio frequency power of +4 dBm.
Eco-Design / Energy Labelling

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6.0 mm
General
We recommend that the product be brought into the room where it is to be installed
and left to acclimatise to room temperature, this will reduce the possibility of
condensation on electronic components.
The shower works best when water supply conditions are stable and within the
specications, refer to section 'Specications'. If the supply conditions fall outside
the specications, the shower may go into a safe shut down condition.
DO NOT connect the outlet of the shower to any tap, on/o󰀨 control valve, trigger
operated showerhead or any other showerhead other than those specied for use
with this shower. This could cause scalding or severe damage to the product and
will invalidate the guarantee. Only Kohler Mira recommended showerheads, shower
hoses and accessories must be used.
If pipework and/or electrical cables enter the shower from the rear through a hole in
the wall, provision must be made to prevent water ingress back into the wall structure.
Route cable and pipe supplies via the cut outs moulded in the case and cover.
DO NOT perform any unspecied modications to the shower or its accessories.
Drilling xing holes or making water or electrical entry points outside of the showers
designed areas can lead to uncontrolled water ingress. This could cause re,
electrocution or damage to the product and will invalidate the product guarantee.
When servicing only use genuine Kohler Mira replacement parts.
DO NOT increase the size or cut alternative pipe / cable entry points as water ingress
into the product may occur.
After completing the installation be careful when cleaning. Many household and
commercial cleaners, including tile cleaners and hand/surface cleaning wipes contain
abrasives and chemical substances that can damage plastics, plating and printing
and should not be used. These nishes should be cleaned with a mild washing up
detergent or soap solution, and then wiped dry using a soft cloth.
Tools Required
Installation Requirements

11 1306246-W2-D
Plumbing
Refer to section: ‘Important Safety Information’ rst.
1. Do not use sealing compounds on any pipe tting or joints.
2. To avoid damage to the case when soldered ttings are used, pre-solder the
pipework and ttings before connecting them to the inlet connector assembly.
3. Never t the appliance to hot water supplies or to gravity systems of any
description. Only t the product to a mains cold water pipe.
4. If the pressure exceeds the maximum specied then a drop tight pressure
reducing valve (PRV) must be tted. This should be sited as close to the incoming
mains stopcock and ideally set to 3.5 bar.
5. Avoid layouts where the shower hose will be sharply kinked. This may reduce
the life of the hose.
6. Supply pipework MUST be ushed to clear debris before connecting the
appliance. Debris will reduce the performance of the shower and may damage
the product. Avoid running the pipework through excessively hot or cold areas
such as hot loft spaces, airing cupboards, or in close proximity to hot water pipes.
If this cannot be avoided, we recommend insulating the pipes.
7. The shower must be tted onto a tiled or sealed nished surface i.e. on top of
tiles. DO NOT tile up to the sides of the shower or use a sealant around the
case. Failure to do this may cause appliance failure. To ensure the case and
other components are not put under strain during installation always provide
mechanical support when making plumbing connections. Upon completion of
the installation ensure connections and back case are not under any stress due
to misaligned pipework or electrical cables.
8. We recommend that a non-restrictive (free owing) isolating valve is tted in the
cold water supply pipe to allow maintenance of the appliance.
9. When installed in very hard water areas (above 200ppm temporary hardness)
your installer may advise the installation of a water treatment device, to reduce
the e󰀨ects of limescale formation. Any malfunction due to limescale is not covered
by the manufacturer’s guarantee. Your local water company will be able to advise
the hardness of water in your area.
10. Wall xings are supplied for solid wall structures. For other wall structures such
as wall panels alternative xings may be required. A minimum of 2 xing screws
must be used.
11. The position of the shower and shower ttings must provide a minimum gap of
25 mm between the showerhead and the spill over level of any bath, shower tray
or basin and a minimum gap of 30 mm between the showerhead and the spill
over level of any toilet, bidet or other appliance with a Fluid Category 5 backow
risk.

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Zone of
Backflow
Risk
30 mm
Minimum
Toilet or Bidet
FC5
Hand Basin
FC3
Bath or Shower
Tray FC3
Electric
Shower
25 mm
Minimum
25 mm Minimum
Hose Retaining Ring fitted and shower fittings fixed
at a suitable height preventing dirty water backflow.
Note! There will be occasions when the hose retaining ring will not provide a suitable
solution for Fluid Category 3 installations, in these instances an outlet double
checkvalve must be tted, this will increase the required supply pressure typically by
10kPa (0.1 bar). Double check valves tted in the inlet supply to the appliance cause
a pressure build up, which a󰀨ect the maximum static inlet pressure for the appliance
and must not be tted. For Fluid category 5 double check valves are not suitable.
Refer to section: ‘Important Safety Information’ rst.
1. In a domestic installation, the rating of the electricity supplier’s fuse and the
consumer unit must be adequate for the additional demand. All Mira Advance
electric showers are high power appliances. Voltage drop due to local heavy
demand will reduce the shower’s performance.
2. The appliance must be earthed by connecting the supply-cable earth conductor
to the earth terminal. Any supplementary bonding and supply cable size must
conform to BS 7671.
3. As a guide only, and in accordance with BS 7671 we recommend close
circuit protection:
i.e. 8.7 kW = 40 Amp
9.8 kW = 45 Amp
Electrical

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Electrical Schematic Diagram
Consumer Unit
Double Pole
Isolating Switch
Shower
Unit
4. For new installations a 30 mA Residual Current Device (RCD) must be
incorporated into the electrical supply to the shower in accordance with the current
wiring regulations. When replacing an existing electric shower we recommend
that a 30 mA RCD is incorporated in accordance with current wiring regulations
if not already provided.
5. A separate, permanently connected supply must taken from the consumer unit
to the appliance through a double-pole switch, which has at least 3 mm contact
separation. The switch can be a ceiling mounted pull cord type within the shower
room or a wall mounted switch in the applicable zone area.
6. DO NOT exert strain on the terminal block. Make sure that the electrical
connections are tightly screwed down.
7. DO NOT turn on the electrical supply until the plumbing has been completed.
8. Unless otherwise stated, electrical equipment such as extractor fans, pumps
must not be connected via this product.

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CONTROL BOARD PART
OF THE COVER ASSEMBLY
GREY A
BLUE A
BROWN A
GREEN B
TERMINAL BLOCK
RELAY PCBA
BLACK A
INLET CONNECTOR ASSEMBLY
FLOW VALVE ASSEMBLY
N L
GREEN A
BLACK B BLACK D
BLACK C
TANK ASSEMBLY
RED A
BROWN B
Shower Unit Wiring Diagram - Standard and Flex Product Only

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Warning, isolate
the electrical and
water supplies
before installing
the shower!
Decide on a suitable position for the shower unit and ttings leaving adequate
space for maintenance. A suitable position for the shower will have a minimum clear
distance of 100 mm around the shower unit to allow for cover removal and retting.
See “Installation - Plumbing” for further details.
Note! If installation includes an Instantmatch by Whale®drain pump, see “Bluetooth”
section for information on position of wireless devices.
Use the installation template provided to mark and drill the required xing holes. Do
not drill through the shower unit into the wall. Plaster and brick dust will damage
the internal components of the product. DO NOT drill into buried cables or pipes.
Note! Make sure that you mark a minimum of two xing holes, one at the top and
one at the bottom.
THERMOSTATIC
ELECTRIC SHOWER
Mira Advance
8.7 and 9.8 kW
Kohler Mira Limited, July 2017
Installation Template
1327483-W7-A
Optional
Hole
Bottom
Fixing Hole
Bottom
Fixing Hole
Optional
Hole
Optional
Hole
Top Fixing
Hole
Optional
Hole
Inlet
Connector
Electrical
Connections
Outlet
Connector
Place Spirit Level on This Line
to Level Product Before Drilling
This Installation Template is compatible with
the following Mira Advance Electric Showers:
Standard 8.7 and 9.8 kW
Flex 8.7 and 8.9 kW
Flex Extra 8.7 kW
Installation

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1 2
Remove the cover screw. Remove the cover, the service tunnel and the bungs.
Determine the cable and pipe supply either top or
bottom or rear connection.
Turn the inlet connector to suit supply
pipe. Do not trap the green wire.
Complete any soldering required away
from the appliance.
3 4

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DO NOT ush through the product by removing the inlet lter. Debris may damage
the product and invalidate the guarantee.
Flush the pipework for approximately 1 minute prior to connection.
1 Min
1 Min
DO NOT
REMOVE TO
FLUSH THE
PRODUCT
5
Drill the xing holes through the plastic case in the designated areas as required.
Route the signal cable to the shower drain pump (if applicable).
Fix the appliance to the wall.
Use appropriate screws and wall plugs for xing.
Note! Make sure that the product is securely xed to the wall.
6

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Connect the hose pointing into the bath
or tray.
Note! Make sure that the hose washer
is tted.
DO NOT t the shower head at this stage.
Connect supply pipe, then turn the water
supply on and check the shower unit for
leaks. DO NOT overtighten.
8
7
9Important! Priming the Shower
Make sure that the electrical
supply is isolated!
To prime the appliance, push down
and hold the air bleed button until
water ows from the hose and water
leaks from the air bleed button. Do
this for a minimum of 10 seconds
and repeat this procedure 3 times.
Failure to prime the appliance
will seriously a󰀨ect the shower
performance!
Note! Water will leak from bleed
button.
Carefully dry off water before
connecting / reinstating the
electrical supply.

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10
11
Feed the electrical cable into the case. Firmly connect the conductors. DO NOT
exert strain on the terminal block.
N = Blue or Black
= Green or Yellow/Green
L = Brown or Red
NL
Ret the service tunnel.
Important! Refer to set up before tting the front cover.

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12
Factory setting with all switches in the o󰀨 position at maximum temperature of 48° C.
Please refer below for examples of settings.
Note! Depending on the PCB tted the dip
switch description information will look as
shown in either A or B. Switches provide
the same function.
Maximum Temperature/BEAB/Eco (6 L/Min)
Factory Setting 48° C
43° CBeab 41° C
45° C Eco
Setup
12345678
BEAB CARE MODE
OFF
ON
43 DEG C
45 DEG C
RESERVED 1
ECO
RESERVED 2
BLE PUMP ENABLE
WIRED PUMP MODE
12345678
BEAB
OFF ON
43 DEG C
45 DEG C
RESERVED
6L/MIN
PUMP LK3
PUMP LK2
PUMP LK1
A B
12345678
BEAB CARE MODE
OFF ON
43 DEG C
45 DEG C
RESERVED 1
ECO
RESERVED 2
BLE PUMP ENABLE
WIRED PUMP MODE
12345678
BEAB CARE MODE
OFF ON
43 DEG C
45 DEG C
RESERVED 1
ECO
RESERVED 2
BLE PUMP ENABLE
WIRED PUMP MODE
12345678
BEAB CARE MODE
OFF ON
43 DEG C
45 DEG C
RESERVED 1
ECO
RESERVED 2
BLE PUMP ENABLE
WIRED PUMP MODE
12345678
BEAB CARE MODE
OFF ON
43 DEG C
45 DEG C
RESERVED 1
ECO
RESERVED 2
BLE PUMP ENABLE
WIRED PUMP MODE
You must set the product up to ensure it operates correctly for the users requirements.
12345678
BEABCARE MODE
ONOFF
43DEG C
45DEG C
RESERVED1
ECO
RESERVED2
BLEPUMPENABLE
WIREDPUMPMODE
Donot
removelabel
Rear of Cover
12345678
BEAB CARE MODE
ONOFF
43 DEG C
45 DEG C
RESERVED 1
ECO
RESERVED 2
BLE PUMP ENABLE
WIRED PUMP MODE
Do not
remove label
BEAB and Eco mode cannot be used together, if both modes are selected the shower
will operate in BEAB mode and the Eco switch will not have any a󰀨ect.