Mira Advance ATL Operation manual

1
Installation & User Guide
Mira Advance ATL
THESEINSTRUCTIONSARETOBELEFTWITHTHEUSER
8.7 and 9.8 kW
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Contents
Section Page
1 .....Introduction....... ................................................................ 3
2 .....Important Safety Information.........................................4
3 .....Pack Contents Checklist................................................7
4 .....Dimensions........................................................................ 8
5 .....Mira Advance ATL Wiring Diagram ............................... 11
6 .....Specifications.................................................................12
7 .....Installation Requirements ............................................13
8 .....Installation........................................................................ 17
9 .....Commissioning ..............................................................23
10 ..Operation ........................................................................25
11 ..Fault Diagnosis..............................................................31
12 ..Maintenance...................................................................38
13 .. Maximum Temperature Setting ...................................45
14 ..Spare Parts ....................................................................47
Guarantee, Customer Care Policy, and How to contact us
............................................................................. Back cover

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Section
1Introduction
Thank you for purchasing a quality Mira product. To exploit the full potential of your
new shower, please take time to read this guide thoroughly, having done so, keep it
handyforfuturereference.
The Mira Advance ATL is a high performance electric shower, which provides
thermostatictemperaturecontrolwhichcompensatesforpressure,temperatureand
voltagechangestoachieve very accurate watertemperatureswhilstshowering.
Separatepush-buttoncontrols allow theusertoeasily select threeindependent
flow settings.
The Mira Advance ATL features as standard, a safe 'maximum temperature
setting', but also benefits from a special feature allowing the maximum shower
temperaturetobelimitedtotemperaturesrangingbetween370C-480C.
The Mira Advance ATL Memory control model provides the user the opportunity to
preset five choices of flow level and temperature, which can be easily recalled
upondemand bysimple pushbutton control.
The Mira Advance ATL Flex is designed to be easily operated by users with
restrictedhandmovementusingergonomicallydesignedcontrols.
For healthcare or special need requirements, refer to section 13, "Maximum
TemperatureSetting".
Mira Advance models covered by this guide:
MiraAdvanceATLStandard 8.7 kW 240 Volts, 8.0 kW 230 Volts
MiraAdvanceATLStandard 9.8 kW 240 Volts, 9.0 kW 230 Volts
MiraAdvanceATLMemory 8.7 kW 240 Volts, 8.0 kW 230 Volts
MiraAdvanceATLMemory 9.8 kW 240 Volts, 9.0 kW 230 Volts
MiraAdvanceATLFlex 8.7 kW 240 Volts, 8.0 kW 230 Volts
MiraAdvanceATLFlex 9.8 kW 240 Volts, 9.0 kW 230 Volts
IfyouexperienceanydifficultywiththeinstallationoroperationofyournewMira
Advance,thenpleaserefertoFault Diagnosis,beforecontactingKohlerMira
Limited.Ourtelephoneandfaxnumberscanbefoundonthebackcoverofthis
guide.

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Section
2Important Safety Information
1.Warning!
1.1. Products manufactured by us are safe and without risk provided they are
installed,usedandmaintainedingoodworking orderinaccordancewith
ourinstructionsandrecommendations.
1.2. THISAPPLIANCEMUSTBEEARTHED.ENSURESUPPLEMENTRY
BONDINGCOMPLIESWITHTHE"REQUIREMENTSFORELECTRICAL
INSTALLATIONS".
In accordance with the current edition of 'The Plugs and Sockets etc.
(Safety) 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.
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 unit must not be fitted where it may be exposed to freezing
conditions. Make sure that any pipework that could become frozen is
properlyinsulated.
1.5. DO NOT operate this appliance if it is frozen. Allow the appliance to thaw
beforeusingagain.
1.6. DO NOT operate this appliance if water leaks from the pressure relief
valve.Maintenance willbe requiredbefore theappliance canbe safely
used.
1.7. 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.
1.8. There are no user serviceable components beneath the cover of this
appliance.Onlya competent tradesperson shouldremovethecover.

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1.9. 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.
1.10. Isolate the electrical and water supply before removing the cover.
1.11. Mains connections are exposed when the cover is removed.
1.12. Refer to the wiring diagram before making any electrical connections.
1.13. Ensure all electrical connections are tight, to prevent overheating.
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. Follow all warnings, cautions and instructions contained in this guide, and
onor insidethe appliance.
2.4. The electrical installation must comply with the "Requirements for
Electrical Installations" commonly referred to as the IEE Wiring
Regulations, or any particular regulations and practices, specified by the
local electricity supply company in force at the time of installation. The
installation should be carried out by an electrician or contractor who is
registered, or is a member of, an association such as:
2.4.1. National Inspection Council for Electrical Installation and Contracting
(NICEIC),throughouttheUK.
2.4.2. The Electrical Contractors Association (ECA), England and Wales.
2.4.3. The Electrical Contractors Association of Scotland (ECAS).
1.9.1. If the cover is not correctly fitted and water has entered the appliance
case.
1.9.2. If the case is damaged.
1.9.3. If the appliance begins to make an odd noise, smell or smoke.
1.9.4. If the appliance shows signs of a distinct change in performance,
indicatinganeedformaintenance.
1.9.5. If the appliance is frozen.

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2.5. This is a high power unit, it is essential to contact your electricity supply
company to ensure that the electricity supply is adequate for the purpose.
2.6. The plumbing installation must comply with the requirements of UK Water
Regulations/Bye-laws(Scotland),BuildingRegulationsoranyparticular
regulations and practices, specified by the local water company or water
undertakers.The installationshould becarried out by a plumberor
contractor who is registered, or is a member of, an association such as:
2.7. Anyonewhomayhavedifficultyunderstandingoroperatingthecontrolsofany
showershouldbeattendedwhilstshowering.Particularconsiderationshouldbe
giventotheyoung,theelderly,theinfirm,oranyoneinexperiencedinthecorrect
operationof the controls.
2.8. 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.
2.6.1. Institute of Plumbing (IOP), throughout the UK.
2.6.2. National Association of Plumbing, Heating and Mechanical Services
Contractors(NAPH&MSC),EnglandandWales.
2.6.3. Scottishand NorthernIreland Plumbing Employers’Federation
(SNIPEF), ScotlandandNorthernIreland.

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Section
3Pack Contents Checklist
!!
!!
!Tick the appropriate boxes to familiarize yourself with the part names and to confirm
that the parts are included.
"
1 x Installation and User Guide !
1 x Customer Support Brochure !
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1 x Mira Advance ATL
Flex !
1 x Mira Advance ATL
Memory !
1 x Olive !
1 x Compression Nut !1 x Tap Connector Adaptor !
1 x Mira Advance ATL
Standard !
2 x Wall Screws !
2 x Wall Plugs !
1 x Earth Sleeve !
Or Or
(for fitting to existing tap connector)

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1. Mira Advance ATL
Standard Model
Memory Model
84.5
68
84.5
68
168
168
395 395
Section
4Dimensions

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Flex Model
All dimensions are nominal and in millimetres.
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 
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  

L
N
Mira Advance ATL centre
line
Inlet Connector
Centre Line
Supply pipe centre line
Inlet Connector
Assembly
(Bottom inlet
shown)
All dimensions are nominal and in millimetres.
2.WaterandCableEntryPoints
73 46.5
288
395
59
95
168
101
73
360
367
ImportantPoints
1.The top and bottom of
the case walls have
thinned sections for ease
of removal to accept top
or bottom water inlet.
2.Thehatchedareasare
case cutouts to allow
cable and pipe access.
3.Ensure screw fixings do
notpunctureburied
cables.

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5Mira Advance ATL Wiring Diagram
Section
Relay
Board
E
InletSensors
Red
Brown(77)
Brown
SolenoidValve
Transformer
230/240V
AC Only
Green/Yellow
Brown
DoublePoleSwitch 45ABreakCapacity 3mmContactSeparation
L
N
PL2
PL1
MainControlBoard
(78)
PL2
PL6
PL5
PL4 PL1 PL8 PL3 PL7
PL10
Green/Y
(75)
Inlet Outlet
TerminalBlock
Outlet
Temperature
Sensor
OneShot
ThermalTrip
Temperature
Potentiometer
Blue
HeaterTank
PlumbingConnectors
PL12
PL11

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Section
6Specifications
1.Plumbing
1.1. Theinletconnectorassemblyincorporatesaninletfilter,whichswivelstoallow
these entry positions, top, top back, bottom and bottom back inlet.
1.2. The outlet terminates with a 1/2" BSP male thread for connection to a Mira
flexibleshowerhose.
1.3. Amaintainedpressure of atleast1 bar is recommended for theproductupto
a maximum static pressure of 10 bar.
Thermostatic performance will be maintained down to 0.5 bar maintained
pressure.However,thiswillresultinreducedpowerandthereforereducedflow.
1.4. Minimum static pressure 0.2 bar to keep the flow valve closed.
1.5. The Mira Advance ATL will provide satisfactory performance with incoming
watersupplytemperaturesbetween2 -280C.
1.6. MaximumambienttemperaturefortheMiraAdvanceATLwhilstinuseis300C.
2.Electrical
2.1. Mira Advance ATL supply fuse - 8.7 kW 40 Amp
9.8 kW 45 Amp
2.2. The terminal block will not accept cable larger than 16mm2.
2.3. TheMiraAdvanceATLwillprovidesatisfactoryperformancewithanincoming
electricity supply voltage of 230 V +/-10%.
3.StandardsandApprovals
3.1. This Mira Advance ATL complies with all relevant directives for CE marking.

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1.Plumbing
Read Section2, "Important Safety Information" first.
1.1. The Mira Advance ATL is normally connected to the cold water mains-fed
supply.
1.2. The Mira Advance ATL is suitable for installation within the shower area and
must be positioned over a water catchment area with the controls at a
convenientheightfortheuser.Theshowerfittingshouldbepositionedsothat
itdischargesdownthecentrelineofthebath,oracrosstheopeningofashower
cubicle, and must be directed away from the Mira Advance ATL .
1.3. The Mira Advance ATL is fitted with an inlet connector assembly that is
designedtoacceptplumbingsuppliesfromthetop,bottomorback.Thewater
supplycanbefed with 15mm pipeor10mmmicroborepipe,suitably adapted
fortheinletconnectorassembly.If10mmmicroboreisused,thenanallowance
for increased pressure loss must be made to ensure that the minimum
maintained inlet pressure of 1 bar is achieved (refer to specification).
1.4. At pressures below 1 bar maintained the full flow performance may not be
achieved.
1.5. The Mira Advance ATL must be fitted ONTO the finished wall surface i.e.
on top of the tiles. DO NOT block the air ventilation gaps around the sides
of the unit, either by tiling up to the sides of the unit or by using a sealant
around the case (Small pillars moulded on to the back of the case allow air
circulation). This Mira Advance ATL is designed to be ventilated. Failure to
do this may cause product failure (refer to Figure 1).
1.6. UseonlytheinletconnectorassemblysuppliedwiththeMiraAdvanceATL,do
not use any other types of fitting.
Section
7Installation Requirements
Figure 1 Figure 2
Spill-over Level 25mmminimum

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1.7. When installing the inlet connector for back inlet supply (refer to Section 8,
"Installation")connection,itisadvisabletosealaroundtheincomingmains-
fed supply to prevent water ingress into the wall.
1.8. Werecommendthatanon-restrictive(freeflowing)isolatingvalveisfittedinthe
coldwatersupplypipetoallowthecompletemaintenanceoftheMiraAdvance.
Donotuseavalvewithaloosewasherplate(jumper)asthiscanleadtoabuild
up of static pressures.
1.9. The Mira Advance ATL is fitted with a 1/2" BSP male outlet thread, to accept
aMirashowerhose.
1.10.Refrainfromapplyingexcessiveforcewhenmakinganyconnections.Always
providemechanicalsupportwhenmakingtheplumbingconnections.
1.11. To avoid damage to the case when soldered fittings are used, pre-solder the
pipeworkandfittingsbeforeconnectingthemtotheinletconnectorassembly.
Note!Supply pipework MUST be flushed to clear debris before connecting the
Mira Advance ATL. Debris will reduce the performance of the unit.
1.12. Wheninstalledinveryhardwaterareas(above200ppm temporary
hardness) your installer may advise the installation of a water treatment
device, to reduce the effects of limescale formation. Mira Advance ATL
malfunction due to excessive limescale formation is not covered by the
manufacturer'sguarantee.Your local water companywillbeableto advise
the hardness of water in your area.
1.13. A hose retaining ring is supplied to prevent the handset from dropping
below the spillover level of the bath or shower, which could lead to
contaminationfrombacksiphonage(refertoFigure2).Thesuppliedhose
retainingring should meetthegreat majorityofuser requirements for
shower installations with flexible outlet fittings. However, there will be
occasions when the hose retaining ring will not provide a suitable solution.
In these instances an outlet double checkvalve, e.g. the Mira DCV-H,
must be fitted. The inclusion of the Mira DCV-H will increase the required
supply pressure typically by 0.1 bar.
Double checkvalves, fitted in the inlet supply to the appliance, cause a
pressure buildup, which could exceed the maximum static inlet pressure
fortheappliance.
1.14. Avoidlayoutswheretheshowerhosewillbesharplykinked.Thismayreduce
the life of the hose.

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2.Electrical
ReadSection2 "Important Safety Information" first.
2.1. The electrical installation must comply with the "Requirements for Electrical
Installations" commonly referred to as the IEE Wiring Regulations, or any
particular regulations and practices, specified by the local electricity supply
company in force at the time of installation.
2.2. Ina domesticinstallation,theratingoftheelectricitysupplycompanyfuseand
the consumer unit must be adequate for the additional demand. As the Mira
Advance ATL is a high power unit, it is essential to contact your electricity
supply company to ensure that the supply is adequate for the Mira Advance
ATL. Voltage drop due to local heavy demand will reduce the shower's
performance.
2.3. TheMiraAdvanceATLmustbeearthedbyconnectingthesupply-cableearth
conductorto theearth 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 4.0mm2 if the
cable is not mechanically protected (2.5mm2if mechanically protected).
2.4. Theminimumcablesize (cross-sectional area)requiredis6mm2under
normal conditions of installation. To obtain full advantage of the power
provided by this unit the shortest possible cable route from the consumer
unit to the shower should be used. The maximum permissible circuit length
is dependent on current demand, voltage drop and cable size, refer to the
IEEWiringRegulationsforfurtherinformation.
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
throughthermallyinsulatingmaterialorinlocationswheretheambient
temperature is likely to exceed 300C. 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. Refer to a qualified electrician
and "the requirements for electrical installations" commonly referred to as
theIEEWiring Regulations.
As a guide only, the following maximum permissible lengths are given for
6mm2cable protected by a 40 A (for 8.7kW)/ 45A (for 9.8kW) MCB (type B) and
allowing for a 5 Volt drop:
Advance ATL 8.7 kW (240 V AC) at 240 V - 18 Metres
Advance ATL 9.8 kW (240 V AC) at 240 V - 16 Metres

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2.7. DO NOT twist the individual cable cores of the live and neutral conductors,
as this will prevent them from entering the terminal block.
2.8. DO NOT exert strain on the terminal block.
2.9. DO NOT turn-on the electrical supply until the plumbing has been
completed.
Plumbing and Electrical Schematic Diagram
Figure 3
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Mira Advance ATL
Optional Outlet
Double Checkvalve
Double-pole
Isolating Switch
Hose
Retaining
Ring
Mains-fed Cold
Water Supply
Clamp
Bracket
RF2
Handset
Holder
Consumer Unit
Isolating
Valve
2.5. Aseparate,permanentlyconnected supplymustbetakenfromtheconsumer
unittotheMiraAdvanceATL throughadouble-poleswitch,whichhasatleast
3mmcontact separation.The switch canbe aceiling mountedpull-cord type
within the shower room or a wall mounted switch in an adjacent room.
2.6. A 30 mA RCD MUST be fitted. This may be part of the consumer unit or a
separateunit.
Note! The terminal block will not accept cable larger than 16mm2.

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Section
8Installation
1.1. To remove the Mira Advance ATL
caseremovethescrewatthebottom
of the case.
1.2. Pull the bottom of the Mira Advance
ATLcoveroutwardsandupwardsoff
the case.
1.3. Slide out the inlet shield, located
over the inlet connector assembly.
1.4. Unscrewthetransitsealingcapsfrom
theinletandoutletoftheMiraAdvance
ATL.
1.5. When installing the Advance ATL
with concealed water and electrical
supplies refer to, "Dimensions:
Water and cable entry points".
1. MiraAdvanceATL
Read Section 2 "Important Safety Information" first.
WARNING! Isolate the electrical and water supplies before proceeding with the
installation of the Mira Advance ATL. The electricity must be turned off at the mains
and the appropriate circuit fuse removed, if applicable.
Note! Bottom inlet is illustrated for clarity in these instructions.
Screw
Wire 78 Multi-
connector Inlet Shield
Transit
Sealing Cap
(outlet)

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100
Minimum
10 Minimum
Rising
Back Inlet
Supply
Falling
Back Inlet
Supply
Falling
Supply
Rising
Supply
Front of
Mira
Advance
ATL
?
"
#
Tap Connector
Adaptor
(supplied)
Fibre Washer
1.7. Determine whether the cold water
andcablesupplieswillbetop(falling),
bottom (rising), or back inlet to the
Mira Advance ATL.
1.8. Swivel the inlet connector assembly
to suit (not directly back into the
wall).Avoidtrappingthegreenearth
bonding wire.
1.9. Removeasappropriate,thethinned
sections in the Mira Advance ATL
case, to allow the pipe and cable to
entertheproduct.
1.10. Install the mains-fed cold water
supply pipe
The Mira Advance ATL can be
connectedto either acompression
fitting (supplied) or a tap connector
(notsupplied).
IfupgradingfromotherMira
Advances that use a tap connector,
thenthetap connector adaptercan
be used in place of the fibre washer.
This allows the tap connector to be
used in conjunction with the
compression fitting of the product
(seediagram).
For back inlet supplies, the cold
water pipe must emerge from the
walls surface 'square' to prevent
straining the inlet connector clamp
bracket. See diagram for options.
1.6. When deciding the position of the
Mira Advance ATL on the wall:
Allow100mmminimumclearance
to the right hand side of the case, to
provide unrestricted access to the
inlet connector, for installation and
future maintenance.
Allow10mmminimumclearancefrom
thetopofthecasetoallowthecover
toberemoved.

19
DO NOT connect directly back into
the wall.
1.11. Thoroughly flush the mains-fed
cold water supply pipe. The
supply must be clean and free
from debris BEFORE connecting
theMiraAdvanceATL.
Note! Debris will reduce the
performance of the unit.
To flush the pipework, turn on
thewater supplyand draina
minimum of 10 litres (2 gallons)
of water into a bucket or
catchment area. Turn off the
watersupply.
1.12.Avoidingburiedcablesandpipes,
chooseoneoftheupperfixingholes
which will allow the Mira Advance
ATL to be firmly fixed to the wall
structure, and drill through the
thinned hole section in the back of
the case.
1.13. Offer the Mira Advance ATL up to
the wall and temporarily connect
the mains-fed cold water supply
pipe. Mark through the casing the
positionoftheupperandlowerholes.
Remove the Mira Advance ATL
from the wall before drilling. This
willpreventdebrisfromenteringthe
Mira Advance ATL.
1.14. Drillandsuitablyplugthetwofixing
holes. Secure the Mira Advance
ATL to the wall with the screws
provided. Alternative fixings (not
supplied) may be necessary for
some wall structures.
Upper Fixing Holes
INLET
Lower Fixing Holes

20
Air Bleed
Button
1.15. Make the connection to the mains-
fed cold water supply pipe. Hold a
wrench across the flats of the inlet
connector assembly to prevent
damage to the connector, whilst
tighteningthecompressionnut.Turn
on the water supply.
Priming the Mira Advance ATL
Connect the shower hose to the Mira
Advance ATL and position the hose
to discharge into the shower tray or
bath waste outlet.
Press the air bleed button, located
on top of the flow valve, several
times. This will allow the Mira
Advance ATL to fill with water and
expelanyentrappedair.
Note! Failure to prime the unit will
severelyeffectperformance.
Note! Water at full mains supply
pressurewill flow fromtheshower
hose and a small amount of water
willbedischarged from undertheair
bleedbutton.
Caution! Once the air bleed button
has been pressed ensure that is
notfouledwhenreleased,otherwise
waterwill continueto discharge from
thebleedbutton.