Mira Play Operation manual

1
Installation & User Guide
ELECTRIC SHOWER
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER
9.5 kW

2
Contents
Introduction..................................................................................... 3
Important Safety Information ............................................... 4
Pack Contents Checklist ........................................................ 6
Specifications ........................................................................... 7
Installer Instructions .................................................................. 8
Installation .....................................................................................12
Commissioning ........................................................................... 16
User Instructions........................................................................... 18
Fault Diagnosis ........................................................................... 23
Maintenance ........................................................................... 28
Dimensions .................................................................................... 30
Wiring Diagram .......................................................................... 31
Accessories - Mira DCV-H ....................................................... 32
Spare Parts ................................................................................... 32
Guarantee, Customer Care Policy, and How to contact us
................................................................. Back Cover
Section Page

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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/flow adjustment. A unique flow regulator stabilizes temperature changes
caused by water pressure fluctuations. These can result from taps being turned on or
off, or toilets being flushed. An individual light indicates “POWER ON”.
This shower comes complete with a set of Mira Response Adjustable Shower Fittings.
Mira Play models covered by this guide:
Mira Play 9.5 kW- A 9.5 kW 240 V AC (8.3 kW 230 V AC) heater. Available in white/
white panel, white/chrome panel and satin/chrome panel finishes.
Mira Shower Fittings covered by this guide:
Mira Response Adjustable Shower Fittings
An adjustable spray handset with three different spray actions (start, soothe and
force), supplied complete with flexible hose, clamp bracket assembly, slide bar,
supports, soap dish, and hose retaining ring. Available in white/chrome finish.
If you experience any difficulty with the installation or operation of your new shower
control, then please refer to the Fault Diagnosis section before contacting Kohler Mira
Ltd. Our telephone and fax numbers can be found on the back cover of this guide.

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Important Safety Information
1.Warning!
1.1. Products manufactured by us are safe and without risk provided they are installed,
used and maintained in good working order in accordance with our instructions
and recommendations.
1.2. 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 BS 7671 “The
IEE Wiring Regulations” in force at the time of installation. This appliance is
intended to be permanently connected to the fixed electrical wiring of the mains
system with its own dedicated supply.
1.3. DO NOT twist the individual cable cores of the live and neutral conductors, as
this will prevent them from entering the terminal block.
1.4. The shower unitmust NOT befittedwhereitmay be exposed to freezing conditions.
Make sure that any pipework that could become frozen is properly insulated.
1.5. DO NOT fit any form of outlet flow control as the outlet acts as a vent for the tank
body. Only Mira recommended outlet fittings should be used.
1.6. If the cover is removed, the following warnings must be observed:
1.6.1.Turn off the electrical and water supplies before removing the cover.
1.6.2.Mains connections are exposed when cover is removed.
1.6.3.Refer to the wiring diagram before making any electrical connections (see
section “Wiring Diagram”).
1.6.4.Ensure all electrical connections are tight, to prevent them overheating.

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2. Caution!
2.1. Follow all warnings, cautions and instructions contained in this guide, and on or
inside the appliance.
2.2. The electrical installation must comply with the “Requirements for Electrical
Installations”, commonly referred to as BS 7671 the “IEE Wiring Regulations”. Or
any particular regulations and practices, specified by the local electricity supply
company in force at the time of the installation. The installation should be carried
out by an electrician or contractor who is “Part P” (Building Regulations) registered,
or is a member of an association such as:
2.2.1.National Inspection Council for Electrical Installation and Contracting
(NICEIC), throughout the UK.
2.2.2.The Electrical Contractors Association (ECA), England and Wales.
2.2.3.The Electrical Contractors Association of Scotland (ECAS).
2.3. The plumbing installation must comply with the requirements of UK Water
Regulations/Bye-laws(Scotland), Building Regulationsorany particularregulations
and practices, specified by the local water company. The installation should be
carried out by a plumber or contractor who is registered, or is a member of, an
association such as:
2.3.1.Institute of Plumbing (IOP), throughout the UK.
2.3.2.National Association of Plumbing, Heating and Mechanical Services
Contractors (NAPH & MSC), England and Wales.
2.3.3.Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),
Scotland and Northern Ireland.

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Pack Contents Checklist
9Tick the appropriate boxes to familiarize yourself with the part names and to
confirm that the parts are included.
1. Mira Play 9.5 kW
1 x Mira Play 9.5 kW
3 x Fixing Screws
3 x Wall Plugs
2. Documentation
1 x Installation and User Guide
1 x Installation Template
1 x Guarantee Card

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3. 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:
9.5 kW = 70 kPa (0.7 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 9.5 kW requires a 40 Amp fuse.
2.2. The terminal block will accept cable sizes up to 16 mm2.
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” first.
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 flowing isolating valve.
4. Positioned over water catchment area.
5. Fitted to finished wall surface.
6. No sharp hose kinks.
7. Fittings positioned with greater than 25 mm
gap or outlet double checkvalve fitted.
8. Supply pipework flushed clear.
9. Watertight inlet connection and fittings.
10. Cover secured correctly.
Minimum
200 mm from
ceiling.
Fixed to
finished 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), 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 flowing) isolating valve is fitted 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 fitted 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 fitted onto a finished flat and even wall surface (this wall surface
should be tiled or suitably waterproofed). Do not fit 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 flexible outlet fittings. 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 fitted. This will increase the required
supply pressure typically by 10 kPa (0.1 bar). See section “Accessories”.
8. Supply pipework must be flushed to clear any debris before connecting to the appliance.
9. To avoid damage to the case when soldered fittings are used, pre-solder the pipework
and fittings 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 fitted with a plastic inlet compression assembly for connecting to a
15mm supply pipe from the top, bottom or back. Double checkvalves, fitted 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” first.
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 mm2if
mechanically protected). Use a suitable earth bonding strap to connect the earth
terminal to 15mm 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.
It is strongly recommended that a 30 mA Residual Current Device (RCD) is 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. Ensure 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” first.
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 fixings 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.
Refit the Service Tunnel
and Cover. Make sure
they fit 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” first.
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 fit 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 fix bottom Slide Bar Support
and fully tighten the screw*. Then
fix 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 fixings 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 flowing at
a cool temperature.
0-5 secs
Turn control slowly.
Temperature remains
cool and flow 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.
17. 18.
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.
The shower will purge water
from its tank for a few seconds.
Residual water may drain
over a few minutes.

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User Instructions
1. Warning!
1.1. DO NOT operate this appliance if it appears to be frozen. Allow the appliance
to thaw and then contact your installer before using again.
1.2. DO NOT operate this appliance if water leaks from the pressure relief valve;
maintenance will be required before the appliance can be safely used.
1.3. There are no user serviceable components beneath the cover of this appliance.
Only a competent tradesperson should remove the Cover.
1.4. If any of the following conditions occur, isolate the electricity and water supplies.
Contact your installer or refer to “To contact us”, on the back page of this guide.
1.4.1.If water is leaking from inside the product.
1.4.2.If the case is damaged.
1.4.3.If the appliance begins to make an odd noise, smell or smoke.
1.4.4.If the appliance shows signs of a distinct change in performance, indicating
a need for maintenance.
1.4.5.If the cover is not correctly fitted.
2. Caution!
2.1. Read all of these instructions and retain this guide for later use.
2.2. Pass on this guide in the event of change of ownership of the installation site.
2.3. Anyone who may have difficulty understanding or operating the controls of any
shower should be attended whilst showering. Particular consideration should be
given to the young, the elderly, the infirm, or anyone inexperienced in the correct
operation of the controls.
2.4. 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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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 flow rate and vice versa.

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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 6oC
band if other outlets are
opened whilst showering,
providing the minimum
pressure does not fall
below 70 kPa (0.7 bar).
Water inlet pressure fluctuations due to other draw offs (e.g. flushing toilet) will
cause the showering temperature to increase.