Mira Play 8.5 kW Operation manual

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These instructions are to be left with the user
8.5, 9.5 & 10.8kW
Installation & User Guide
MIRA PLAY
ELECTRIC SHOWER

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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
Patents and Design Registration ..........................................................2
Introduction .............................................................................................3
Important Safety Information .................................................................4
Pack Contents Checklist ........................................................................ 6
Specications ..........................................................................................7
Installer Instructions ............................................................................... 8
Plumbing Checklist ...............................................................................8
Electrical Checklist .............................................................................10
Installation .............................................................................................12
Mira Play ............................................................................................12
Mira Response Adjustable Shower Fittings ........................................14
Commissioning .....................................................................................16
User Instructions...................................................................................18
Fault Diagnosis......................................................................................22
Maintenance...........................................................................................26
Dimensions ............................................................................................27
Wiring Diagram......................................................................................28
Spare Parts ............................................................................................ 29
Mira Play ............................................................................................29
Mira Response Shower Fittings .........................................................31
Accessories ...........................................................................................33
Notes ......................................................................................................34
Customer Service..................................................................................36
Patents and Design Registration
Design Registration: 000555768-0001
Patents: GB: 2 237 860
Ireland: 64471

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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 Play is an electric shower with separate controls for power selection and
temperature/ow adjustment. A unique ow regulator stabilizes temperature changes
caused by water pressure uctuations. These can result from taps being turned on
or off, or toilets being ushed. An individual light indicates “POWER ON”.
This shower comes complete with a set of Mira Response Adjustable Shower
Fittings.
Mira Play 8.5 kW- A 8.5 kW 240 V AC (7.8 kW 230 V AC) heater.
Mira Play 9.5 kW- A 9.5 kW 240 V AC (8.7 kW 230 V AC) heater.
Mira Play 10.8 kW- A 10.8 kW 240 V AC (9.9 kW 230 V AC) heater.
Guarantee
For domestic installations, Mira Showers guarantee the Mira Play 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 Mira Play against
any defect in materials or workmanship for a period of one year from the date of
purchase.
For terms and conditions refer to section “Customer Services”.
Mira Response Adjustable Shower Fittings
An adjustable spray handset with three different spray actions (start, soothe and
force), supplied complete with exible hose, clamp bracket assembly, slide bar,
supports, soap dish, and hose retaining ring. Available in white/chrome nish.
Recommended Usage
Domestic ü
Light Commercial ü
Heavy Commercial û
Healthcare û

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IMPORTANT SAFETY INFORMATION
Installation must be carried out in accordance with these instructions, and must be
conducted by designated, qualied and competent personnel.
1. Warning!
This shower 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 appliance.
If you require a thermostatic shower Mira produce a range which also limit the
maximum temperature, for more information our contact details can be found
on the back cover of this guide.
1.1. Products manufactured by us are safe and risk-free, provided that they are
installed, used and maintained in good working order, in accordance with our
instructions and recommendations.
1.2. Isolate the electrical and water supplies before commencing installation. The
electricity must be turned off at the mains and the appropriate circuit fuse
removed, if applicable.
1.3. Mains connections are exposed when the cover is removed.
1.4. Refer to the wiring diagram before making any electrical connections (refer to
the wiring diagram at the back of this guide).
1.5. Make sure that any pipework that could become frozen is properly insulated.
1.6. Having completed the installation, make sure that the user is familiar with the
operation of the appliance.
1.7. Make sure that this guide is left with the user.
1.8. DO NOT commission this appliance if water leaks from the unit or the heater
tank pressure relief valve.
1.9. DO NOT t any form of outlet control (e.g. Trigger handset) as the outlet acts
as a vent for the tank body. Only Mira recommended outlet ttings should be
used.
1.10. Make sure all electrical connections are tight, to prevent overheating.
1.11.Warning! DO NOT operate this appliance if it is frozen. Allow the appliance to
thaw before using. The shower unit must not be tted where it may be exposed
to freezing conditions.
1.12. This product is not suitable for areas with high humidity (i.e steam rooms).
Please consult your installer.
1.13.THIS APPLIANCE MUST BE EARTHED. MAKE SURE SUPPLEMENTARY
BONDING COMPLIES WITH THE “REQUIREMENTS FOR ELECTRICAL
INSTALLATIONS”.
The installation must be in accordance with the current edition of ’The Plugs
and Sockets etc. (Safety) Regulations’ in force at the time of installation, this
Mira Play is intended to be permanently connected to the xed electrical wiring
of the mains system.

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2. Caution!
2.1. Read all of these instructions and retain this guide for later use.
2.2. The electrical installation must comply to “BS 7671 - Requirements for Electrical
Installations”, commonly referred to as the IEE Wiring Regulations - Part 7, or
any particular regulations and practices, specied by the local electricity supply
company.
2.3. The plumbing installation must comply with the requirements of UK Water
Regulations/Bye-laws (Scotland), Building Regulations or any particular
regulations and practices, specied by the local water company or water
undertakers.
2.4. 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.
2.5. Anyone who may have difculty understanding or operating the controls of any
shower should be attended whilst showering. Particular consideration should
be given to:
2.5.1. The young.
2.5.2. The elderly.
2.5.3. The inrm.
2.5.4. The disabled.
2.5.5. Anyone who suffers from a medical condition that can result in temporary
incapacity (e.g. epilepsy or blackouts).
2.5.6. Anyone inexperienced in the correct operation of the controls.
2.6. Children should be supervised to ensure that they DO NOT play with the
appliance.
2.7. Sunburn or skin conditions can increase your sensitivity to hot water. Make
sure that you set the shower to a cooler temperature.
2.8. 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.
2.8.1. If the cover is not correctly tted and water has entered the appliance
case.
2.8.2. If the case is damaged.
2.8.3. If the appliance begins to make an odd noise, smell or smoke.
2.8.4. If the appliance shows signs of a distinct change in performance,
indicating a need for maintenance.
2.8.5 DO NOT operate this appliance if water leaks from this appliance.
2.9. 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.

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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.
1 x Mira Play Electric Shower
Mira Play
3 x Fixing Screws
3 x Wall Plugs
Documentation
1 x Installation Template
1 x Guarantee and Registration Card

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Mira Response Adjustable Shower Fittings
2 x Wall Plugs
2 x Fixing Screws
1 x Slide Bar
1 x 1.25 m
Flexible Hose
2 x Slide Bar
End Supports
2 x Slide
Bar End Caps
1 x Handset
2 x Hose Seals
1 x Clamp
Bracket Assembly
1 x Soap Dish
1 x Hose Retaining Ring
SPECIFICATIONS
1. Plumbing
1.1. Minimum maintained inlet pressure:
8.5 kW, 9.5 kW = 70 kPa (0.7 bar) 10.8 kW = 100 kPa (1.0 bar)
1.2. Maximum static inlet pressure of 1000 kPa (10 bar).
1.3. Minimum static inlet pressure of 50 kPa (0.5 bar) to keep the inlet valve
closed.
2. Electrical
2.1. The Mira Play 8.5 kW and 9.5 kW requires a 40 Amp fuse.
2.2. The Mira Play 10.8 kW requires a 45 Amp fuse.
2.3. The terminal block will accept cable sizes up to 16 mm2.
2.4. The Mira Play is suitable for installation in zone 1 and is rated IP X4.
3. Standards and Approvals
3.1. The Mira Play 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 8.5 kW and 9.5 kW = 70 kPa (0.7 bar).
Minimum maintained inlet pressure 10.8 kW = 100 kPa (1.0 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 positioned with greater than 25 mm
gap or outlet double checkvalve tted.
8. Supply pipework ushed clear.
9. Watertight inlet connection and ttings.
10. Cover secured correctly.
Minimum
200 mm from
ceiling.
Fixed to nished
wall surface.
Isolating Valve
Avoid sharp kinks
Convenient height
for all the family.
Hose Retaining Ring
25 mm Min
Shower TrayBath

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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), for 8.5 kW and 9.5 kW and 100 kPa (1.0 bar)
for 10.8 kW 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
as part of the cold water supply pipe to allow the complete maintenance of the
appliance. Do not use a valve with a loose washer plate (jumper) as this can
lead to the build up of static pressure.
4. The appliance is only 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 suitably 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 Hose Retaining Ring is supplied to prevent the handset from dropping below
the spill-over level of the bath or shower tray, which could lead to contamination
from back-siphoning. The supplied Hose Retaining Ring should meet the greater
majority of user requirements for shower installations with exible outlet ttings.
However, there will be occasions where 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 any 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 plastic 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. Electrical supply fuse and consumer unit are adequate for the product.
2. Shower unit is earthed.
3. The minimum required supply cable size must conform to BS 7671.
4. Double pole isolating switch.
5. DO NOT twist live or neutral cable cores.
6. Electrical connections are tightly secured.
DO NOT strain the terminal block.
7. Plumbing supply completed before electricity 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 Play 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 appliance must be earthed by connecting the supply cable’s 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. If the cable is not mechanically protected, the cable size must
be a minimum of 4.0 mm² (2.5 mm² if mechanically protected). Use a suitable
earth bonding strap to connect the earth terminal to 15 mm copper pipe. The
installation must comply with the “Requirements for electrical Installations” in
accordance with BS 7671.
3. Supply cable - see opposite.
Important! The shower circuit should be separated from other circuits by at
least twice the diameter of the cable or conduit, and it should not be run through
thermally insulating material or in locations where the ambient temperature is
likely to exceed 30°C. If any of these conditions are unavoidable, it is necessary
to determine the cable size which will prevent damage to the cable caused by
overheating.
4. As a guide only, and in accordance with BS 7671 we recommend close circuit
protection: i.e. 9.5 kW = 40 Amp.
A 30 mA Residual Current Device (RCD) must be included in the electrical
circuit. 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 isolating switch, which has at least 3 mm of contact
separation. The switch can be a ceiling mounted pullcord type within the shower
room, or a wall mounted switch in an adjacent room.
5. DO NOT twist the individual cable cores of either the live or neutral conductors,
as this will prevent them from entering the terminal block.
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.

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

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10. 11.
12. 13.
14. 15.
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
= GREEN
N = BLUE

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Mira Response Adjustable Shower Fittings
Read the section “Important Safety Information” rst.
1. 2.
3. 4.
Position as shown to prevent back
siphoning.
Depress release button FULLY
and assemble Clamp Bracket.
Release the button when in desired
position.
Soap Dish/Hose
Retaining Ring
25 mm Minimum
Spill-over level
Clamp Bracket
Release
Button
Slide Bar
Slide the Soap Dish and the Hose
Retaining Ring onto the Slide Bar
below the Clamp Bracket.
Fit both the top and bottom Supports.
Make sure the slots are aligned to
t fully home.

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5. 6.
7. 8.
9.
Mark the positions of the slots on
both top and bottom Supports.
Caution! Do not drill into buried
cables or pipes.
First x bottom Slide Bar Support
and fully tighten the screw*. Then
x the top Slide Bar Support whilst
pressing it down, to keep the whole
assembly together.
Fit the End Caps to the Slide Bar
Supports.
Fit the Hose to both the Handset and the
Shower Outlet, remembering to pass it through
the Hose Retaining Ring. Do not overtighten
the Hose connections.
* Alternative xings for some wall structures are not supplied.

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COMMISSIONING
If you are unsure how an electric shower works, please read through the section
“User Instructions” before continuing.
PUSH
COLD
_
+
1. 2. 3.
4. 5. 6.
7. 8. 9.
10. 11. 12.
Electrical supply is turned
off at the mains.
Set control to LOW. Turn water supply fully
on.
Check for water leaks. Turn control to full cold. Switch on electrical
supply.
Push START button. Water will be owing at a
cool temperature.
0-5 secs
Turn control slowly.
Temperature remains cool
and ow is reduced.
Turn control to full cold. Set control to MEDIUM. The temperature will rise
slightly.
5-10 secs

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_
+
PUSH
Set control to HIGH.
13. 14.
15. 16.
Note! A slight “hissing” sound may be heard from the appliance during operation.
High mains water pressure and high shower temperature will affect the tone. This
is quite normal in use.
The temperature will rise further.
Adjust temperatures as required.
Flow rate will adjust automatically.
Press STOP and isolate power.
Residual water may drain over a
few minutes.
17.

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

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The Effect of Seasonal Changes
***
_
+
For a cold shower select Low.
For a summer warm shower select Medium.
For a winter warm shower select High.
During extremes of mains water supply temperature, adjust heater setting to obtain
a better showering temperature.
The Effect of Other Water Devices
Example of how shower temperature stabilizes due
to sudden pressure changes.
_
+
Selected
Showering
Temperature
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).
Water inlet pressure uctuations due to other draw offs (e.g. ushing toilet) will cause
the showering temperature to increase.

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