Mira Sport Operation manual

1
These instructions are to be left with the user
7.5, 9.0 & 9.8 kW
Installation & User Guide
MIRA SPORT
ELECTRIC SHOWERS

2
If you experience any difculty with the installation or operation of your new Electric
Shower, please refer to ‘Fault Diagnosis’, before contacting Kohler Mira Ltd. Our
telephone and fax numbers can be found on the back cover of this guide.
CONTENTS
Introduction .............................................................................................3
Guarantee ............................................................................................3
Recommended Usage .........................................................................3
Patents and Design Registration ..........................................................3
Important Safety Information .................................................................4
Pack Contents Checklist ........................................................................ 6
Specications ..........................................................................................7
Installer Instructions ............................................................................... 8
Plumbing Checklist ...............................................................................8
Electrical Checklist .............................................................................10
Installation .............................................................................................12
Commissioning .....................................................................................14
User Instructions...................................................................................16
Fault Diagnosis......................................................................................19
Maintenance...........................................................................................23
Dimensions ............................................................................................24
Wiring Diagram......................................................................................25
Spare Parts ............................................................................................ 26
Accessories ...........................................................................................28
Notes ......................................................................................................29
Customer Service..................................................................................32

3
INTRODUCTION
Thank you for purchasing a quality Mira product. To enjoy the full potential of your
new product, please take time to read this guide thoroughly. Having done so, keep
it handy for future reference.
The Mira Sport is an electric shower with separate controls for power selection and
temperature/ow adjustment. A unique ow regulator stabilises temperature changes
caused by water pressure uctuations. These can result from taps being turned on or
off or toilets being ushed. Individual lights indicate "POWER" and "LOW FLOW".
Mira Sport models covered by this guide:
Mira Sport 7.5 - A 7.5 kW 240 V AC (6.85 kW 230 V AC) heater. Available in white/
chrome nish.
Mira Sport 9.0 - A 9.0 kW 240 V AC (8.2 kW 230 V AC) heater. Available in white,
white/chrome, and chrome nishes.
Mira Sport 9.8 - A 9.8 kW 240 V AC (9.0 kW 230 V AC) heater. Available in white,
white/chrome, and chrome nishes.
Guarantee
For domestic installations, Mira Showers guarantee the Mira Sport against any
defect in materials or workmanship for a period of 2 years from the date of purchase
(shower ttings for one year).
For non-domestic installations, Mira Showers guarantee the Mira Sport against
any defect in materials or workmanship for a period of 1 years from the date of
purchase.
For Terms and Conditions refer to the back cover of this guide.
Recommended Usage
Patents and Design Registration
Design Registration: 000373543-002-004
Patents: GB: 2 341 667
Ireland: 82835
Patent Applications: UK: 2 427 460, 2 432 201
Ireland: 2006/0462, 2006/0818
Recommended Usage
Domestic ü
Light Commercial ü
Heavy Commercial û
Healthcare û

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IMPORTANT SAFETY INFORMATION
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY:
1. Installation of this shower must be carried out in accordance with these
instructions, and must be conducted by competent personnel.
2. Isolate the electrical and water supplies before commencing installation. The
electricity must be switched off at the consumer unit and the appropriate circuit
fuse removed, if applicable.
3. 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.
4. 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.
5. 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.
6. This shower must be provided with means for disconnection that is incorporated
into the xed wiring in accordance with the relevant local wiring regulations. The
isolating switch must be local to the appliance and may be a ceiling mounted
pullcord type or a wall mounted switch tted in an appropriate zone area.
7. In accordance with BS7671 a 30mA Residual Current Device (RCD) must be
tted. This may be part of the consumer unit or a separate unit.
8. This shower must be earthed. Ensure any supplementary bonding complies
with the relevant regulations.
9. Ensure all electrical connections are tight, to prevent overheating.
10. This shower must not be tted where it may be exposed to freezing conditions.
Ensure that any pipe-work that could become frozen is properly insulated.
11. This shower is not suitable for areas with high humidity or temperature (i.e.
steam rooms and saunas).
12. Mains connections are exposed when the cover is removed, only a competent
person should remove the front cover. We recommend any maintenance work
is carried out by a Mira Service Engineer or suitably qualied tradesperson.
There are no user serviceable parts inside the shower.
13. DO NOT switch on if water leaks from the main enclosure. Isolate the electrical
supply to the shower immediately.
14. DO NOT switch on if there is a possibility that the water in the shower is frozen.
15. The outlet must not be connected to any tap, outlet control or showerhead other
than those specied for use with this shower. Only Kohler Mira recommended
accessories should be used.

5
16. Electric showers can deliver scalding temperatures if not operated, installed or
maintained in accordance with the instructions, warnings and cautions contained
in this guide and on or inside the shower.
17. Rapid or excessive operation of the shower controls may result in high or
unstable outlet water temperatures. Operate controls gradually and allow 10-15
seconds to stabilise checking the temperature before entering the shower.
18. This shower is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning the use of
the shower by a person responsible for their safety.
19. Children should be supervised to ensure that they do not play with the shower.
20. Always switch off the shower at the electrical isolating switch when not in use.
21. The showerhead must be de-scaled regularly.
22. DO NOT allow the handset to spray water directly on to the shower. Eg. When
cleaning shower control.
23. If the shower is not to be used for a long period, the water supply to the shower
must be isolated. If the shower or pipe-work is at risk of freezing during this
period, they should also be drained of water.
If any of the following conditions occur, isolate the electricity and water supplies
and refer to “To contact us”, on the back page of this guide.
• If the cover is not correctly tted and water has entered the shower case
• If the case is damaged
• If the shower begins to make an odd noise, smell or smoke
• If the shower shows signs of a distinct change in performance indicating a need
for maintenance
• If the shower is frozen

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PACK CONTENTS CHECKLIST
Tick the appropriate boxes to familiarize yourself with the part names and to
conrm that the parts are included.
q 3 x Wall Plugs
q 1 x Compression Nut
q 3 x Fixing Screws
q2 x Case Inserts
q 1 x Olive
q 1 x Mira Sport 7.5, 9.0 or 9.8
Documentation
q1 x Installation Template
q1 x Installer Checklist
q1 x Guarantee Card

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SPECIFICATIONS
1. Plumbing
1.1 Minimum maintained inlet pressure 70 kPa (0.7 bar) for satisfactory
operation.
1.2 Maximum static inlet pressure 1000 kPa (10 bar).
1.3 Minimum static pressure 20 kPa (0.2 bar) to keep the ow valve closed.
2. Electrical
2.1 The Mira Sport 7.5 kW @ 240 V AC (6.85 kW @ 230 V AC) and 9.0 kW @
240 V AC (8.2 kW @ 230 V AC) require a 40 Amp circuit protection device.
The Mira Sport 9.8 kW @ 240 V AC (9.0 kW @230 V AC) requires a 45 Amp
circuit protection device.
2.2 The terminal block will accept cable up to 16 mm² (7.5, 9.0 and 9.8 kW).
2.3 The Mira Sport complies with all relevant directives for CE marking.
2.4 The Mira Sport is suitable for installation in zone 1 and is rated IPX4.
3. Standards and Approvals
3.1 The Mira Sport complies with all relevant directives for CE marking.

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INSTALLER INSTRUCTIONS
Read the section “Important Safety Information” rst.
Plumbing Checklist
1. Minimum maintained inlet pressure = 70 kPa (0.7 bar).
Maximum static inlet pressure = 1000 kPa (10 bar).
2. Water treatment device (if required).
3. Free owing isolating valve.
4. Positioned over water catchment area.
5. Fitted to nished wall surface.
6. No sharp hose kinks.
7. Fittings should be positioned with a greater than 25 mm gap. If this is not
achievable then an outlet double checkvalve must be tted.
8. Supply pipework ushed clear.
9. Watertight inlet connection and ttings.
10. Case inserts tted and Cover secured correctly.
Isolating Valve
Avoid sharp kinks
Convenient height
for all the family
25 mm Min
Bath Shower Tray
Fixed to nished
wall surface
Minimum
200 mm from
ceiling
Soap Dish/Hose Retaining Ring

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Plumbing (checklist in detail)
1. The appliance is designed to operate with a minimum maintained inlet
pressure of 70 kPa (0.7 bar) up to a maximum static inlet pressure of 1000 kPa
(10 bar).
2. When installed in very hard water areas (above 200 ppm temporary hardness)
your installer may advise the installation of a water treatment device, to reduce
the effects of limescale formation. Your local water company will be able to
advise the hardness of water in your area.
3. It is recommended that a non-restrictive (free owing) isolating valve is tted
in the cold water supply pipe to allow the complete maintenance of the Mira
Sport. Do not use a valve with a loose washer plate (jumper) as this can lead
to a build up of static pressures.
4. The appliance is suitable for installation within the shower area. It is tted with
a pressure relief device and must be positioned over a water catchment area
with the controls at a convenient height for all users.
5. The appliance must be tted onto a nished at and even wall surface (this
wall surface should be tiled or waterproofed). Do not t the appliance to the
wall and tile up to the case. For safety requirements, an air gap must be left
behind the appliance.
6. Avoid layouts where the shower hose will be sharply kinked. This may reduce
the life of the hose.
7. A Soap Dish/Hose Retaining Ring is supplied to prevent the handset from
dropping below the spill-over level of the bath or shower, which could lead to
contamination from back-siphoning. The supplied Hose Retaining Ring should
meet the great majority of user requirements for shower installations with
exible outlet ttings. However, there will be occasions when it will not provide
a suitable solution. In these instances an outlet double checkvalve, e.g. a Mira
DCV-H, must be tted. This will increase the required supply pressure typically
by 10 kPa (0.1 bar) (see section "Accessories").
8. Supply pipework must be ushed to clear debris before connecting to the
appliance.
9. 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.
Refrain from applying excessive force when making any connections. Always
provide mechanical support when making the plumbing connections.
10. The appliance is tted with a brass inlet compression assembly for connecting
to a 15 mm supply pipe from the top, bottom or back. Double checkvalves,
tted in the inlet supply to the appliance, cause a pressure build-up, which
could exceed the maximum static inlet pressure and damage the appliance.

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Read the section “Important Safety Information” rst.
Electrical Checklist
1. A 30 mA residual current device (RCD) has been tted.
2. Electrical supply fuse and consumer unit are adequate for the product.
3. Shower unit is earthed.
4. The minimum required supply cable size must conform to BS 7671.
5. Double pole isolating switch.
6. Do not twist live or neutral cable cores.
7. Electrical connections are tightly secured.
Do not strain terminal block.
8. Plumbing supply completed before electrical supply is turned on.
Consumer Unit
Double-pole Isolating
Switch

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Electrical (checklist in detail)
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 Sport
electric showers are high power units, therefore it is essential to contact your
electricity supplier to ensure that the supply is adequate for the product. Voltage
drop due to local heavy demand will reduce the shower's performance.
2. The Mira Sport must be earthed by connecting the supply-cable earth conductor
to the earth terminal.
Supplementary bonding: Within the bathroom or shower room, all accessible
conductive parts of electrical equipment and extraneous conductive parts (metal
parts) that are likely to introduce earth potential, must be electrically bonded to
earth using a minimum cable size of 4.0 mm2if the cable is not mechanically
protected, (2.5 mm2 if mechanically protected).
3. Supply cable - see opposite.
4. As a guide only, and in accordance with BS 7671 we recommend close circuit
protection: i.e. 7.5 kW & 9.0 kW = 40 Amp, 9.8 kW = 45 Amp
5. A 30 mA Residual Current Device (RCD) MUST be included in the electrical
circuit (BS7671). This may be part of the consumer unit or a separate unit.
A separate, permanently connected supply is 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 pullcord type within the shower
room or a wall mounted switch in an adjacent room.
6. DO NOT twist the individual cable cores of either the live or neutral conductors,
as this will prevent them from entering the terminal block.
7. DO NOT exert strain on the terminal block. Ensure that the electrical connections
are tightly screwed down.
8. DO NOT turn on the electrical supply until the plumbing has been completed.

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INSTALLATION
Read the section “Important Safety Information” rst
Electrical supply is turned
off at the mains.
200 mm minimum gap
from ceiling.
Remove three screws.
INSTALLATION TEMPLATE
Mira Sport
Attention Installer
Caution! Do not drill into
buried cables or pipes.
Drill and plug* the three
holes using template.
Remove cover and
determine supply pipe
position.
For back inlet use soldered
elbow.
Do not trap green wire.
Fix appliance to wall. Flush a minimum of 10
litres through pipework.
* Alternative xings for some wall structures are not supplied.
1. 2. 200 mm 3.
4. 5. 6.
7. 8. 9.

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Connect supply pipe. Do not
overtighten!
Feed cable into Case. Fit Earth
sleeve (not supplied) and strip
insulation.
Do not twist cable cores.
Firmly connect the conductors.
Do not exert strain on the terminal
block.
Make sure wires are clear of all
mounting holes.
Ret the Service Tunnel and Cover.
Make sure they t correctly.
Do not overtighten screws.
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.
L = BROWN
E = GREEN
N = BLUE
10. 11.
12. 13.
14. 15.
Important! Make sure
that the inlet earth wire is
routed as shown. Failure
to do so may cause
product malfunction.

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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 User
Instructions section before continuing.
COMMISSIONING
Electrical supply is turned
off at the mains.
Turn control to full cold. Turn water supply fully
on.
Check for water leaks. Set control to LOW. Switch on electrical
supply.
Push START button.
COLD
Water will be at full force and
at a cool temperature.
Turn control slowly.
Temperature remains cool
and ow is reduced.
Turn control to full cold. Set control to MEDIUM.
_
+
The temperature will rise
slightly.
0 - 5 secs
5 - 10 secs
1. 2. 3.
4. 5. 6.
7. 8. 9.
10. 11. 12.

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Note! A slight hissing sound may be heard from the Mira Sport during operation.
High mains water pressure and high shower temperatures will affect the tone. This
is quite normal in use.
Set control to HIGH.
_
+
The temperature will rise further.
Adjust temperature as required.
Flow rate will adjust automatically.
Press STOP and isolate power.
The shower will purge water from
its tank for a few seconds.
Residual water may drain over a
few minutes.
5 - 10 secs
0 - 5 secs
13. 14.
15. 16.
17. 18.

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USER INSTRUCTIONS
The warmer the shower, the lower the
ow rate and vice versa.
_
+
COLD
_
+
_
+
Hot water is produced by passing cold
water through a heating tank.
The shower has three heater settings.
How Your Electric Shower Works

17
_
+
Water inlet pressure uctuations due to other draw offs (e.g. ushing toilet) will cause
the showering temperature to increase.
* *
*
_
+
For a cold shower select LOW
For a summer warm shower select MEDIUM
For a winter warm shower select HIGH
Adjust the temperature as required
The ow rate will adjust automatically
The Effect of Seasonal Changes
The Effect of Other Water Devices
Showering temperature
will stabilize 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
stabilizes due to pressure changes.

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A small amount of water may
continue to drain over a few
minutes.
Press STOP button. Shower will
continue to run for a few seconds
before stopping.
_
+
Switch on electrical supply. Press START button.
Set to desired position.
Allow 10-15 seconds for any temperature adjustments to reach the
handset.
_
+
Check water temperature before
entering shower.
Using Your Shower
Read the section “Important Safety Information” rst.
1. 2.
3. 4.
6. 7.
5.

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FAULT DIAGNOSIS
The trouble shooting information tabled below gives details on probable causes and
remedies should difculties be encountered whilst the shower is in operation.
Warning! There are no user serviceable components beneath the cover of the
appliance. Only a competent trades person should remove the front cover!
Symptom Power
Light
Low
Flow
Light
Heater
Low/
Med/
High
Probable Cause Possible Remedy
Appliance
fails to
operate.
OFF
OFF
OFF
OFF
Any
Any
Electrical supply
isolated at double
pole switch.
Fuse blown or
MCB/RCD tripped,
indicating possible
electrical fault.
Switch on electrical
supply via the
pullcord or wall
mounted switch.
Renew the fuse
or reset the MCB/
RCD. If fault
persists, contact
your installer.
Shower
cycles from
hot to cold.
ON
ON
ON
ON
ON
OFF
Med/
High
Med/
High
Med/
High
Handset blocked.
Water pressure
below minimum
required for
appliance
operation.
Temperature dial or
heater setting too
high.
Remove and clean.
Make sure incoming
mains water
stopcock and/or
appliance isolating
valve is fully turned
on.
Turn the heater
selector knob to
medium or turn
the temperature
control until a
cooler temperature
is achieved.

20
Symptom Power
Light
Low
Flow
Light
Heater
Low/
Med/
High
Probable Cause Possible Remedy
Unable to
select a
cool enough
shower.
ON OFF High Due to the rise in
mains water supply
temperature, the
Heater setting may
be too high.
Turn the heater
selector knob to
medium and adjust
the temperature
control until a
suitable temperature
is achieved.
All the following remedies must be performed by a competent tradesperson!
Handset
dripping.
OFF
OFF
OFF
OFF
Any
Any
Insufficient water
supply pressure for
shut off.
Flow Valve faulty.
Min static pressure
to ensure shut off
and prevent dripping
is 20 kPa (0.2 bar).
Note! If other
appliances are
operating, static
pressure may
drop below 20 kPa
(0.2 bar). Contact
local water company.
Renew Flow Valve.
Replace.
Low or no
ow.
ON ON Any Water supply
pipework or inlet
lter restricted by a
blockage or partial
blockage.
Insufficient water
supply pressure/
ow for operation.
Flush supply pipe.
Clean Inlet Filter.
Contact local water
company. Supply
pressure must be a
minimum of 70 kPa
(0.7 bar).
Note! If other
appliances are
operating, pressure
may drop below
70 kPa (0.7 bar).
(cont....)