Kohler Mira Sport J03A User manual

1 1493623-W2-A
These instructions must be left with the user
Mira Sport
7.5, 9.0, 9.8 and 10.8 kW
Installation and User Guide
For SPARES,
ADVICE or REPAIRS
please call us free
on 0800 001 4040
(UK only)

21493623-W2-A
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.

41493623-W2-A
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.
31.Maximum Static Pressure is 1000 kPa (10 bar).
32.Minimum Dynamic Pressure is 70kPa (0.7 bar) 7.5 kW, 9.0 kW
and 9.8 kW; 100kPa (1.0 bar) 10.8 kW.

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Pack Contents
Tick the appropriate boxes to familiarize yourself with the part names and to conrm
that the parts are included.
Documentation
1 x Electric Shower
2 x Case Inserts
1 x Installation Guide and User Guide
1 x Installation Template
1 x Compression Nut
1 x Olive
1 x Guarantee Brochure

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Wiring Diagram
Internal Wiring Diagram
Inlet Connector
Terminal
Block
Heater
Tank
Micro
Switch (L)
Micro
Switch (R)
Solenoid
LED/LED
Housing
Push Button
Switch
BROWN B
GREEN D
BLUE C
RED K
BROWN J
BROWN G
BLACK M
BLACK L
RED H
BLUE E
BROWN F
BLUE E
BLACK N
GREEN A GREEN A
GREEN D

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Design Registration: 001259 287-0002, 001259 287-0005
Patents: GB: 2 341 667, 2 427 460
Ireland: 82835
Patent Application: Ireland: 2006/0462
Thank you for purchasing a quality Mira Sport Electric 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.
Mira Sport electric showers have separate controls for power selection and for
temperature/ow adjustment. A unique ow regulator stabilises any temperature
changes caused by water pressure uctuations, which can result from taps being
turned on or o󰀨 or toilets being ushed.
Domestic Light Commercial 
Heavy Commercial Healthcare 
Product Variant Model No. Colour
Mira Sport 7.5 kW J03A White/Chrome
Mira Sport 9.0 kW J03B White/Chrome
Mira Sport 9.8 KW J03C White/Chrome
Mira Sport 10.8 KW J03D White/Chrome
Introduction
Products Covered
Recommended Usage
Patents and Design Registration

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Specications
Plumbing Variant
7.5 9.0 9.8 10.8
Minimum Dynamic Pressure 70 kPa (0.7
bar)
70 kPa (0.7
bar)
70 kPa (0.7
bar)
100 kPa (1.0
bar)
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
Minimum Inlet Temperature 2°C
Inlet Connection 15 mm Compression/1/2” BSP Male
Maximum Water Hardness 200 ppm CaCO3
Outlet Connection 1/2” BSP Male
Electrical Variant
7.5 9.0 9.8 10.8
Nominal Power at 240 V ac 7.5 kW 9.0 kW 9.8 kW 10.8 kW
Nominal Power at 230 V ac 6.9 kW 8.3 kW 9.0 kW 9.9 kW
Recommended MCB Rating 32 A 40A 45A 45A
Maximum Supply Cable Size 16 mm²
Recommended RCD Rating 30 mA tripping current
Recommended Isolator Switch 45 A double-pole with 3 mm contact separation
Appliance Sealing Rating IP X4 - Suitable for installation in Zone 1
Maximum Ambient
Temperature
30°C
Minimum Ambient
Temperature
2°C
Dimensions
Height 358 mm
Width 215 mm
Depth 90 mm
*A drop tight pressure reducing valve should be installed where dynamic or static pressure exceeds the
gure stated in the Specications.

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This product has been designed for domestic use only, Mira Showers guarantee this
product against any defect in materials or workmanship for a period of two years
from the date of purchase (shower ttings for one year).
For terms and conditions, refer to the back cover of this guide.
Guarantee
European Conformity Information
This range of electric showers complies with the following European directives:
2014/35/EU - Low Voltage Directive (LVD),
2014/30/EU - Electromagnetic Compatibility Directive (EMC),
2011/65/EU - Restriction of Hazardous Substances Directive (RoHS)
This range of electric showers are high power appliances and are subject to
conditional connection. If the main electrical supply fuse is rated less than 80 Amps,
the local electricity supply company must be contacted to conrm if the electrical
supply is adequate.
This range of showers complies with the requirements of the UK’s water regulations.
Disposal and Recycling
End of Product Life
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 remove any batteries and 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.

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Installation Requirements
Plumbing
1. 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.
2. DO NOT use sealing compounds on any pipe tting or joints.
3. DO NOT install the product in a position in which service access is limited.
4. Decide on a suitable position for the shower (minimum distance of 200 mm from
the ceiling to allow for cover t and removal).
5. 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 (see diagram on page 11).
6. The shower is suitable for installation within the shower area and is tted with
a pressure relief valve. It must be positioned over a water catchment area with
the controls at a convenient height for the user.
7. The shower must be tted to a waterproof at and even wall surface.
8. DO NOT t the shower to the wall and tile up to the case.
9. DO NOT seal the gap between the shower and the wall surface.
10. The showerhead should be positioned so that it discharges down the centre
line of the bath or across the opening of a shower cubicle.
11. The showerhead must be directed away from the shower unit, during normal
use the showerhead must not spray directly on to the shower unit.
12. DO NOT apply excessive force to plumbing connections; always provide
mechanical support when making plumbing connections. Any soldered joints
should be made before connecting the shower.
13. This shower is not designed to be plumbed directly from the rear. For rear-entry
supply, add an elbow to the supply pipe and connect as a rising or a falling
supply.
14. 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.
15. Only use the inlet connector supplied with the shower. DO NOT use any other
type of tting.
16. A full bore/non restrictive servicing valve must be tted in a readily accessible
position adjacent to the shower to facilitate maintenance of the shower.
DO NOT use a valve with a loose washer plate (jumper) as this can lead to a
build up of static pressure.

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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
17. A water treatment device should be installed where the water hardness may
exceed 200 ppm. Malfunctions caused by excessive limescale formation are
not covered by this shower’s guarantee (see back page for details).
18. The installation must not cause the hose to be sharply kinked during normal
use.
19. DO NOT perform the electrical installation until the plumbing has been completed
and checked for leaks.
20. Wall xings are not supplied. For solid wall structures a red rawl plug and a
no. 8 x 1½” countersunk brass or stainless steel screw should be used. For other
wall structures such as panels alternative xings may be required. A minimum
of 3 xing screws should be used.
Hose retaining ring tted and shower ttings xed at a suitable height
preventing dirty water backow
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 check valve 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.

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Plumbing and Electrical Schematic
Electrical
1. The electrical installation must comply with BS 7671 (commonly referred to as
the IEE Wiring Regulations) and all relevant building regulations, or any particular
regulation or practice specied by the local electricity supply company.
2. Ensure that all circuit protection devices, switches and cabling is adequate
for the rated current of the shower and that the rating of the electricity supply
company fuse and the consumer unit are adequate for the additional demand.
3. The shower must be earthed. Ensure any supplementary bonding complies
with the relevant regulations.
4. This shower is intended to be permanently connected to the xed electrical wiring
of the mains system. A separate supply must be provided from the consumer
unit to the shower.
5. DO NOT supply any other electrical equipment including extractor fans or pumps
via this product.
6. This shower must be provided with means for local disconnection that is
incorporated into the xed wiring in accordance with the relevant local wiring
regulations. This must be a double pole switch, which has at least 3 mm contact
separation in each pole. The switch can be a ceiling mounted pull-cord type
within the shower room or a wall mounted switch tted in the applicable zone
area.
7. A 30mA Residual Current Device (RCD) must be incorporated into the electrical
supply to this shower in accordance with wiring regulations.
8. DO NOT apply excessive force to the terminal block.
9. All electrical connections should be checked for tightness to prevent overheating
before switching on the electrical supply.
10. DO NOT switch on the electrical supply until the plumbing has been completed
and checked for leaks.

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Warning! Turn o󰀨 the electrical and water supplies before proceeding with
the installation of the shower.
Cover
Screw
Screws
Service
Tunnel
Remove the three screws that hold the cover on and remove the
cover.
Remove the service tunnel.
Caution! Do not drill into cables or pipes in the wall.
Thoroughly ush the supply pipe.
Determine the direction and route of the incoming water supply:
falling (entering the shower from the top), or rising (entering the
shower from the bottom).
Note: - DO NOT use an incoming supply entering the shower
directly from the back. Add an elbow to the supply pipe and connect
it as a rising or falling supply.
1
2
Using the installation template supplied, mark the positions of the
three xing holes.
Note: Ensure that there are su󰀩cient lengths of supply pipe and
electrical cable to reach the connection points.
Remove the installation template and drill three holes to suit the
xing screws and wall plugs.
Rotate the inlet connector to suit the direction of the incoming
water supply.
Secure the shower to the wall with appropriate wall xings.
3
4
Inlet
Connector
Upper and lower case inserts are supplied and should be tted.
Note: - Trim the inserts if necessary to t incoming electrical or
water supplies before tting.
Case
Insert
Installation

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5
6
7
8
LN
Loosen the screws in the terminal block and insert the wires.
Inlet
Connector
Olive
Compression
Nut
Inlet Supply
Pipe
Connect the inlet supply pipe to the inlet connector using the
compression nut and olive (supplied).
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.
Strip back su󰀩cient outer cable insulation to enable routing to
terminal block.
Fit an earth sleeve to the earth wire.
Tighten the screws in the terminal block, ensure the wires are
secure and tight.
N(Neutral) = Blue Wire
L(Live) = Brown Wire
(Protective Earth) =
Green /Yellow Sleeved Wire
Turn on the water supply and check for leaks.
Tighten the three cover screws.
Screws
Cover
Spindles
Service Tunnel
Screw
Ensure the earth bonding complies with relevant regulations.
Replace the service tunnel.
Ensure the control dials are aligned with the spindles and replace
the cover.

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Install the shower ttings (Refer to the Shower Fittings
Installation and User Guide packed with the product).
LOWHIGH
ECO
POWER
TEMPERATURE
Do not use alternative screws to secure the cover. This
can cause internal damage to the appliance.
Do not seal around the back of appliance.
This completes the installation, follow the guidelines
in section 'COMMISSIONING' to prepare the shower
for use.
9

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Commissioning
Before carrying out the commissioning procedure install the Shower Fittings,
refer to the Shower Fittings Installation and User Guide.
If you are unsure how an electric shower works, please read through the section
“User Instructions” before continuing.
Turn temperature control to the
cold position.
Turn power control to low.
TEMPERATURE
LOW HIGH
ECO
POWER
12
Switch on the electrical supply.
3
Push START/STOP button.
Light in the button illuminates.
4
Water flows freely within a few
seconds, temperature remains
cool.
5
COLD
0 - 15 secs
HOT
Slowly turn the temperature
control to the hot position.
TEMPERATURE
6
Turn temperature control
back to the midway position.
Flow is reduced and temperature
remains cool.
TEMPERATURE
COLD
HOT
78

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Note: A slight hissing sound may be heard from the Mira shower during
operation. High mains water pressure and high shower temperatures will
a󰀨ect the tone. This is quite normal in use.
LOW HIGH
ECO
POWER
9
Turn power control to Eco.
Temperature will rise slightly.
10
5 - 10 secs
COLD
HOT
5 - 10 secs
COLD
HOT
Turn power control to High.
LOW HIGH
ECO
POWER
11
Temperature will rise further.
12
5 - 10 secs
COLD
HOT
5 - 10 secs
COLD
HOT
13
Adjust temperature as required.
Flow rate will adjust automatically.
TEMPERATURE
Push START/STOP button. Light
in the button goes out.
14
The shower will purge water from
its tank for a few seconds.
15
COLD
0 - 5 secs
HOT
Switch off the electrical supply.
16

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Read the section “Important Safety Information” rst.
Switch on the electrical supply.
Turn the power control to the desired position.
Adjust the temperature as required.
0
15
COLD
HOT
Allow 10 - 15 secs for any temperature adjustments
to stabilise and reach the showerhead.
Check the water temperature before entering
shower.
Switch off the electrical supply.
Push the START/STOP button to turn ON the
appliance. Light in the button illuminates.
Push the START/STOP button to turn OFF
appliance. Wait for the product to fully shut down.
(This may take few seconds)
Operation
LOW
HIGH
ECO
POWER
POWER
TEMPERATURE
TEMPERATURE
12
34
5 6
78

19 1493623-W2-A
A small amount of water may continue to drain over a few minutes.
Warning! Turning the shower o󰀨 and back on during showering may result in unstable temperatures at
the showerhead. Always ensure the temperature has stabilised before re-using the shower.
Note: A slight hissing sound may be heard from the shower during operation. High mains water pressure
and high shower temperatures will a󰀨ect the tone. This is quite normal in use.
The Effect of Seasonal Changes
Incoming mains water temperature is not constant throughout the seasons of the year i.e. cooler during
the winter, warmer during the summer. These changes can affect the outlet temperature of the shower,
therefore the shower temperature may need to be increased or decreased to maintain the desired
showering temperature.
For a cold shower select LOW
For a summer warm shower select ECO/HIGH
For a winter warm shower select HIGH
Adjust the temperature as required. The ow rate will adjust automatically.
*
*
*
LOW
HIGH
ECO
LOW HIGH
ECO
LOW HIGH
ECO
COLD
HOT
9

201493623-W2-A
The Effect of Other Water Devices
Water inlet pressure uctuations due to other draw o󰀨s (e.g. ushing toilet) will cause the showering
temperature to increase.
Showering temperature will stabilise to within
6°C band if other outlets are opened whilst
showering, providing the minimum pressure
does not fall below 70 kPa (0.7 bar).
Selected
Showering
Temperature
Example of how shower temperature stabilises
due to pressure changes.
LOW HIGH
ECO
POWER
TEMPERATURE