Kohler Mira Event XS Operation manual

11293809-W2-E
Installation & User Guide
These instructions must be left with the user
Mira Event XS
Thermostatic Power Shower

21293809-W2-E
Important Safety Information
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. Cleaning and user maintenance shall not be made by children
without supervision.
4. Theoutletmustnotbeconnectedtoanytaporttingotherthan
thosespecied.
5. The showerhead must be descaled regularly. Any blockage of the
showerhead or hose can cause damage to the shower.
6. Warning! DO NOT switch on if there is a possibility that the water
in the heater is frozen.
7. 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.
8. 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.

31293809-W2-E
9. DO NOT switch the shower on if water starts leaking from the shower
case. Isolate the electrical supply to the shower immediately.
10. DO NOT switch the shower on if the case appears to be damaged
or incorrectly tted. Isolate the electrical supply to the shower
immediately.
11. DO NOT increase the power setting or adjust the temperature
control rapidly while using the shower.
12. DO NOTswitchtheshowero󰀨andbackonwhilestandinginthe
waterow.
13. 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.
14. When adjusting the handset mode, point handset away from body
and make sure that the water temperature has stabilised before
continuing to shower.
15. Use caution when altering the water temperature, always check
the temperature before continuing to shower.
16.Switchtheshowero󰀨attheelectricalisolatingswitchwhennotin
use. This is recommended with all electrical appliances.
17. 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.
18. 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.
19. DO NOT install the shower in areas with high humidity and
temperature (i.e. Steam rooms and saunas).
20. DO NOT install the shower where it may be exposed to freezing
conditions. Ensure that any pipework that could become frozen is
properly insulated.
21. 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.

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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 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.
22. 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.
23. Always check the water temperature is safe before entering the
shower.
24. 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.
25. 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.
26. This appliance is intended to be permanently connected to the
water mains and not connected by a hose set.
27. Maximum Inlet Static Pressure is 100 kPa (1.0 bar).
Minimum Inlet Static Pressure is 0.8 kPa (0.008 bar).

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Product Model Number Colour
Mira Event XS Thermostatic B85IB White / Chrome
The Event XS Thermostatic is a surface mounted all-in-one thermostatic power
shower. It is designed for use with a mains voltage electrical supply and gravity
fed hot and cold water supplies. It features a built-in pump unit, thermostatic mixer
assemblyandseparatepower,owandtemperaturecontrols.
The thermostatic mixer assembly responds to changes in incoming water temperature
to maintain the showering temperature selected. The temperature control is preset
to give a maximum showering temperature of 41°C. However, it can be adjusted to
suit installation or user requirements.
Anoverridebuttonisttedtothetemperaturecontrol.Thisallowstheusertooverride
the maximum temperature and select higher showering temperatures. The button
can be disabled, if required.
Theproductisttedwitha15mmdualentrypush-tinletmanifoldwhichallows
pipe connections to the top, bottom or rear of the power shower. The inlet manifold
alsocontainsinletltersandcheckvalves.
Introduction
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.
Mira Power Showers covered by this guide:

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Ifyouexperienceanydi󰀩cultywiththeinstallationoroperationofyournewpower
shower, please refer to 'Fault Diagnosis' before contacting Kohler Mira Limited.
Our contact details can be found on the back cover of this guide.
Design Registration & Patents
Patents
UK: 2 340 210, 2 392 223, 2 392 224, 2 392 225, 2 421 297
USA: 7 240 850
Patent Applications:
Euro: 03254070.0
USA: 2007-0221740-A1
Guarantee
Recommended Usage
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 one years from the date of
purchase.
For terms and conditions, refer to the back cover of this guide.
Recommended Usage
Domestic 
Light Commercial 
Heavy Commercial 
Healthcare 
The Mira Event XS is not suitable for use in institutional/commercial applications. It
must not be used with mains water pressure applications; for example, instantaneous
electric heaters, instantaneous gas water heaters, unvented mains pressure systems,
pumped shower systems and some combination-type storage systems.

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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 Event XS T Thermostatic Power Shower
1xPush-FitRelease
Tool
3xRubberWallPlugs
3 x Fixing Screws
3xRubberFeet
4 x Case Inserts
Pack Contents
Documentation
1xGuaranteeRegistrationDocument

81293809-W2-E
Dimensions are in millimetres.
310
84
115
806628
20
210
Dimensions

91293809-W2-E
Specications
1. General
1.1. Ambient temperature – Maximum recommended ambient temperature for the
appliance is 30°C.
1.2. Maximum recommended hot water temperature – 65°C.
Warning! For safety reasons set the maximum stored hot water temperature
tobetween60and65°C.Suchtemperaturesareconsideredsu󰀩cienttomeet
all normal requirements and will also minimise the deposition of scale in hard
water areas.
1.3. Temperature control – To obtain the full listed performance the Mira Event XS
should be installed, operated and maintained in accordance with this guide.
1.4. The performance outlined below is achieved with a showering temperature of
between 35° and 45°C selected and water supplies of 15°C cold and 65°C hot
with nominally equal pressures.
1.4.1 The maximum temperature stop is set to 41°C. Depressing the
override button overrides the maximum temperature and the showering
temperature can be increased by 5°C to approximately 46°C.
1.4.1. The blended water temperature is maintained within 1°C with a 10°C
change in the hot or cold water supply.
1.4.2. Thesensore󰀨ectsashutdowntoseepageinapproximately2seconds
if the cold supply fails.
1.4.3. Shut down to seepage is achieved even if the hot supply is only 12°C
above the blend temperature.
1.4.4. The blended water temperature is maintained within 1.5°C when the
pressurebetweeninletandoutletishalved(denedasapressureloss
ratio of 2:1) on either the hot or cold side.
1.5. Maximum static inlet pressure – 1 bar or 10 m (supplies must be gravity-fed
atnominallyequalpressures).Refertosection:'Installation Requirements,
Plumbing'.
1.6. Minimum static inlet pressure – 0.008 bar or 80 mm (required to prime the
integral centrifugal pump). The minimum static pressure will increase for long
supplypipelengths.Refertosection:'Installation Requirements, Plumbing'.
1.7. Maximum recommended inlet pressure – 0.5 bar or 5 m (supplies must be
gravity-fed at nominally equal pressures).
1.8. MinimumFlowRate–8L/Min(withastaticinletpressureof0.1bar)andare
for valve only.
MaximumFlowRate–16L/Min(withastaticinletpressureof0.1bar).
 FlowRatesmayvaryduetodi󰀨erencesinsupplypressuresandwhenshower
ttingsinstalled.

101293809-W2-E
1.9. Duty Cycle – The Mira Event XS Thermostatic pump is continuously rated. The
motoristtedwithaself-resettingthermaltrip,designedtooperateifmotor
temperatures become too high due to abnormally high supply voltages.
1.10.Noise – The Mira Event XS is supplied with anti-vibration rubber feet and rubber
wall plugs that isolate the unit from the wall in order to minimize the amount of
noisetransmitted.ThetypeofwalltheMiraEventXSisxedtowillalsoa󰀨ect
the perceived noise level; solid walls will provide a quieter operation.
1.11 Maximum total head delivered – 1.5m
2. Plumbing
2.1. Inlet – 15mmPush-tinletmanifold.
2.2. Outlet – ½″BSP to BS2779.
3. Electrical
3.1. Appliance power supply – 230–240V,50Hz,fusedat3Amps,viaadouble
pole switched fused connection unit (not supplied) with a minimum 3 mm contact
separation in each pole.
3.2. Power supply connection – TheMiraEventXSisttedwithaterminalblock
which will accept cable up to 2.5 mm². Minimum cable size (cross-sectional
area) required under normal installation conditions is 1 mm2.
3.3. Maximum rated power – 150 Watts.
4. Approvals
4.1. The Mira Event XS complies with UKCA & CE standards.

11 1293809-W2-E
1. General
1.1. Do not take risks with plumbing or electrical equipment.
1.2. Do not install the Mira Event XS in a position where it could become frozen.
1.3. Isolate electrical and water supplies before proceeding with the installation of
the Mira Event XS.
1.4. The shower control must be fed from a cold water storage cistern and hot water
cylinder providing nominally equal pressures.
1.5. The installation must be carried out by a competent installer.
1.6 Decide on a suitable position for the Mira Event XS (minimum distance of
200mmfromtheceilingtoallowforttingandremovalofthecover).Theposition
oftheMiraEventXSandtheshowerttingsmustprovideaminimumgapof
25 mm between the spillover level of the shower tray/bath and the handset.
This is to prevent backsiphonage.
1.7. TheMiraEventXSmustbettedontothenishedwallsurfacei.e.ontopof
the tiles. Do notttheMiraEventXStothewallandthentileuptothesidesof
the casing. (Small pillars moulded on the back of the case allow air to circulate
and water to drain from behind the appliance).
1.8. WhenttingtheMiraEventXSwithwallentryinletsuppliesitisrecommended
that the supply pipework is sealed to the wall to prevent water from leaking
back into the wall.
1.9. In solid wall installations the supply pipework should be installed within ducting
to allow some free lateral movement when making supply connections.
1.10 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.
2. Electrical
2.1. Do not turn on the electrical supply until the plumbing has been
completed.
2.2. Themainssupplymustbe230–240Vat50Hzconnectedtotheappliance
via a double pole switched 3 Amp fused connection unit (not supplied) with a
minimum 3 mm contact separation gap in each pole.
2.3. Fuses do not give personal protection against electric shock.
2.4. The Mira Event XS 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 that
are likely to introduce earth potential, must be electrically bonded to earth using
a minimum cable size of 4.0 mm2 if the cable is not mechanically protected
(2.5 mm2if mechanically protected).
Installation Requirements

121293809-W2-E
2.5 The minimum cable size (cross-sectional area) required is 1 mm2 under normal
conditions of installation.
2.6. A30mAresidualcurrentdevice(RCD)mustbetted.Thismaybepartofthe
consumer unit or a separate unit.
3. Plumbing
3.1. Do notuseexcessiveforcewhenmakingconnectionstotheexiblehosesor
handset,ngertightnessissu󰀩cient.
3.2. Do not solder supply pipework with the Mira Event XS connected. Heat
transmitted through the pipework will melt the inlet manifold.
3.3. The storage cistern should have a minimum storage capacity of 230 litres to
provideadequateshoweringtime.Insu󰀩cientstoragemayresultinthepump
being run dry.
3.4. Avoid layouts where the hose will be sharply kinked. This may reduce the life
of the hose.
3.5. Noformofowcontrolshouldbettedtotheoutletoftheappliance.
3.6. Fitnon-restrictive(free-owing)isolatingvalvestotheinletpipeworkinaneasily
accessibleposition.Thesevalveswillallowthewatersupplytobeturnedo󰀨
quickly to the Mira Event XS, for maintenance purposes.
3.7. When using surface mounted inlet supply pipework the use of polyethylene
plastic pipe suitable for hot water is recommended to enhance the appearance
ofthenishedinstallation.Internalpipesupports(notsupplied)shouldbeused
with this type of pipe.
3.8. Only use the Mira showerhead supplied with this appliance.
3.9. If the appliance is installed on a common supply ensure the appliance is the
rsttake-o󰀨fromthesupplyandisnotinuencedbytheoperationofanyother
appliance.
3.10.If the appliance is installed on a common supply which feeds an adjacent
tap, the maximum static inlet pressure for the appliance will, under certain
circumstances, be exceeded. The action of closing the tap can cause a pulse
in the supply pressure which will result in damage to the appliance. This can
be resolved by the installation of a suitably sized mini expansion vessel, sited
as close as possible to the tap and pressurised to 0.5 bar.
3.11.Longpiperunsandexcessiveuseof90°elbowswillsignicantlyreducethe
headavailableattheproduct.Ifthee󰀨ectiveheadislessthan80 mm:
3.11.1. Theexpectedowratemaynotbeachieved.
3.11.2. Air may be drawn into the hot supply from the vent pipe, causing
splutteringandtemperatureuctuationsatthehandset.

13 1293809-W2-E
Use the table below to calculate the actual head of water (x) needed in your
installation.
A = Total length of 15 mm pipe in hot water supply pipe run*
B = Total length of 22 mm pipe in hot water supply pipe run*
C = Total length of 15 mm pipe in cold water supply pipe run*
D = Total length of 22 mm pipe in cold water supply pipe run*
*Measure from the base of the cold water cistern to the relevant inlet port on the
Mira Event XS.
Size
Hot Water Supply Cold Water Supply
PipeRun/QtyofElbows Head Loss
(mm) PipeRun/QtyofElbows Head Loss (mm)
15 mm Pipe A x 120 ......... x 120 C x 120 ......... x 120
22 mm Pipe B x 20 ......... x 20 D x 20 ......... x 20
15 mm
Elbow
No of
Elbows ......... x 55 No of Elbows ......... x 55
22 mm
Elbow
No of
Elbows ......... x 15 No of Elbows ......... x 15
Addtheminimume󰀨ective
head required +80 Addtheminimume󰀨ective head required +80
Requiredheadofwater=
x mm
Requiredheadofwater=
x mm
Example: With A = 1.5 m, B = 2.5 m, C = 2.2 m, D = 0 m.
Size
Hot Water Supply Cold Water Supply
PipeRun/QtyofElbows Head Loss
(mm) PipeRun/QtyofElbows Head Loss (mm)
15 mm Pipe A x 120 1.5 m x 120 180 C x 120 2.2 m x 120 264
22 mm Pipe B x 20 2.5 m x 20 50 D x 20 0mx 20 0
15 mm
Elbow
No of
Elbows 3x 55 165 No of Elbows 3x 55 165
22 mm
Elbow
No of
Elbows 2x 15 30 No of Elbows 0x 15 0
Addtheminimume󰀨ective
head required +80 Addtheminimume󰀨ective head required +80
Requiredheadofwater=
x mm 505 Requiredheadofwater=
x mm 509

141293809-W2-E
A
Minimum
80 mm Head
1.5 m Max
Head
Hose
Retaining
Ring
Warning pipe
B
B
Vent
90o
Cylinder Feed
Cold Pump Feed
30o–60o
A
Warning pipe
Cistern
Minimum
1.0 m Head
25 mm
minimum
Minimum
22 mm
D.H.W.
60oCHot
Supply
IsolatingValve OtherHotDrawO󰀨s
Vent
Pipe
Correct Installation
4. Installation Diagrams
Topreventoperationaldi󰀩culties,thefeedfromthecylindershouldbeasillustrated
below. Side entry cylinder bosses are not recommended because:
• Adropincylinderwaterlevelcouldexposeatopentryimmersionelementiftted.
• Air-in-water solution gathers at the edge of the cylinder and in the centre, during
the heating process before travelling up the vent.
IsolatingValves
missing
Other Cold
DrawO󰀨s
Cold
Supply
Hot
Supply
Vent
Pipe
High-level
HotFeedPipeRun
Hose retaining
ring missing
Strained Hose
*
*
*
*
Side
Entry
Boss
This layout is not suitable
for the Mira Event XS.
*Incorrect supply
connections
Cistern
Other Hot
DrawO󰀨s Incorrect Installation
D.H.W.
60oC
A high level hot feed pipe run as illustrated below will result in air locking and should
be avoided.

15 1293809-W2-E
Installation
Bottom
Cable
Channel
Thinned Section
of Case.
Full Case
Insert
Half Case
Insert
1. Before You Start
A. Choose the appropriate conguration for your installation:
TOP ENTRY SUPPLY CONFIGURATION
Falling Water
Supply Pipes Falling Electrical Supply
(in miniature trunking)
BOTTOM ENTRY SUPPLY CONFIGURATION
RisingWater
Supply Pipes
RisingElectricalSupply
(in miniature trunking)
Half Case
Insert
Full Case
Insert
Top
Cable
Channel
Thinned Section
of Case.

161293809-W2-E
Bottom
Cable
Channel
Top
Cable
Channel
Thinned Section
of Case.
Thinned Section
of Case.
Full Case
Insert
Half Case
Insert
B. Changing the Blanking Plugs
WALL ENTRY SUPPLY CONFIGURATION
1 2

17 1293809-W2-E
Usingthisprocedureasaguide,adjustthestepsforbottomentrycongurations
as appropriate.
2
3
1
3
6
54

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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.
See “Installation - Plumbing” for further details.
Installation of the Shower Unit
2 3
2
3
1
Hold the assembly against the wall and
markthepositionsofthe3xingholes.
Note! The cover retaining screws are
captive and need not be removed.

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Drillthexingholes.
DO NOT drill through the shower unit into
the wall.
DO NOT drill into buried cables or pipes.
5
Feed the water pipe and electrical cable
to the inlet of the shower unit. For rear in-
let,useanelbowtting.Werecommend
a falling supply to prevent air lock in the
pipework.
6
For a falling water supply pipe, care-
fully remove the thinned section of the
rear case using an appropriate cutting
tool.
Thoroughly ush the water supply
pipe.
Trim the thinned
section of the case
covering
the cable channel.

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9
7
Fix the shower unit to the wall, 3 x No.
8 x 1¼” screws and wall plugs are sup-
plied. See “Installation - Plumbing”
for further details.
Miniature
Trunking
All dimensions in millimetres
275
28
30
HC
30
Fixing
Points
Rubber
Feet
Chamfer
Caution! Do not use stainless steel
piping for inlet pipework.
If chrome-plated copper pipework
is used then all traces of chrome
plate must be removed from the
connecting surfaces. If the chrome
is not completely removed then the
inlet manifold collet will fail to grip
the supply pipe and the pipes will
be forced out of the inlet manifold
due to the water supply pressure.
1 min