Mira Extreme Thermostatic User manual

These instructions are to be left with the user
THERMOSTATIC
Installation and User Guide
POWER SHOWER

2
CONTENTS
Introduction .............................................................................................3
Guarantee ............................................................................................4
Recommended Usage..........................................................................4
Important Safety Information .................................................................5
Pack Contents ......................................................................................... 8
Dimensions ..............................................................................................9
Specications ........................................................................................10
Installation Requirements .................................................................... 12
1. General...........................................................................................12
2. Electrical.........................................................................................12
3. Plumbing ........................................................................................ 13
4. Installation Diagrams......................................................................15
Installation .............................................................................................16
1. Before You Start .............................................................................16
2. Conguring the Inlet Supplies ........................................................17
3. Shower Installation.........................................................................19
Commissioning .....................................................................................23
1. General Commissioning................................................................. 23
2. Adjustable Maximum Temperature Setting..................................... 24
3. Temperature Override Button – Disable .........................................26
Operation ...............................................................................................27
Fault Diagnosis......................................................................................28
1. User Maintenance ..........................................................................28
2. Installer Maintenance .....................................................................29
Maintenance...........................................................................................31
1. General...........................................................................................31
2. Cleaning ......................................................................................... 31
3. Front Cover – Removal and Installation......................................... 32
4. Inlet Filter Cap, Cleaning – Removal and Installation ....................33
5. Inlet Manifold, Check Valve – Removal and Installation................. 34
6. Wiring Diagram...............................................................................36
Spare Parts ............................................................................................ 37
Accessories ...........................................................................................39
Customer Service..................................................................................40

3
INTRODUCTION
Thank you for purchasing a quality Mira product. To enjoy the full potential of your
new shower, please take time to read this guide thoroughly, and keep it handy for
future reference.
The Mira Extreme 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 buttons and temperature control.
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.
The shower control is supplied with Mira Logic power shower ttings. These ttings
consist of an adjustable spray handset with four different spray actions (start,
champagne, massage and economy), exible hose, adjustable clamp bracket
assembly, slide bar and supports, hose retaining ring and wall mounted soap dish.
The ttings are available in a white/chrome or all white nish.
The Mira Extreme 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.
If you experience any difculty with the installation or operation of your new power
shower, please refer to ‘Fault Diagnosis’, before contacting Kohler Mira Ltd. Our
contact details can be found on the back cover of this guide.

4
Guarantee
Mira Showers guarantee the Mira Extreme against any defect in materials or
workmanship for a period of one year from the date of purchase.
For terms and conditions refer to the back cover of this guide.
Recommended Usage
Domestic ü
Light Commercial ü
Heavy Commercial û
Healthcare û
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

5
IMPORTANT SAFETY INFORMATION
Warning!
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.
2. THISAPPLIANCE MUST BE EARTHED. MAKE SURE THE SUPPLEMENTARY
BONDING COMPLIES WITH THE “REQUIREMENTS FOR ELECTRICAL
INSTALLATIONS” BS7671. This electric shower is intended to be permanently
connected to the xed electrical wiring of the mains system.
In accordance with the current edition of ‘The Plugs and Sockets etc. (Safety)
Regulations in force at the time of installation, the Appliance is intended to
be permanently connected to the xed electrical wiring of the mains system.
A means for electrical isolation of the appliance shall be provided in the xed
wiring in accordance with local wiring regulations.
3. A separate, permanently connected supply must be 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 tted in the applicable zone area.
4. This appliance must be provided with means for disconnection that is
incorporated into the xed wiring in accordance with the relevant local wiring
regulations.
5. This product is suitable for installation within Zone 1 and is rated IP X4.
6. Switch off the appliance at electrical isolating switch when not in use. This is
for safety and is recommended with all electrical appliances.
7. DO NOT CONNECT THE APPLIANCE TO A MAINS-FED WATER SUPPLY.
Such a connection will damage the Appliance, and is not covered under the
manufacturer’s guarantee.
8. The Appliance must not be tted where it may be exposed to freezing conditions.
Make sure that any pipework that could become frozen is properly insulated.
9. To ensure the case and other components are not put under strain during
installation always provide mechanical support when making plumbing
connections. Upon completion of the installation ensure connections and
back case are not under any stress due to misaligned pipework or electrical
cables.
10. DO NOT switch on if there is a possibility that the water in the appliance is
frozen, isolate the electrical and water supply before removing the cover. Allow
the Appliance to thaw before using again.

6
11. 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.
12. DO NOT commission or operate the Appliance if water leaks from the unit,
maintenance will be required before the Appliance can be safely used.
13. If the shower is dismantled during installation or servicing then upon completion
the product must be inspected to ensure there are no leaks.
14. DO NOT t any form of outlet ow control as the outlet acts as a vent for the
tank body. Only Mira recommended outlet ttings should be used.
15. This Shower control is not a thermostatic and does not sense supply temperature
or pressure variations. Therefore, inlet water temperatures and pressures
especially the hot, should be relatively constant.
16. The temperature control can be turned from FULL HOT to FULL COLD. As
such, turning the control to full hot will deliver water at the hot water storage
temperature.
17. There are no user serviceable components beneath the cover of the Appliance.
Only a competent tradesperson should remove the cover. We recommend
any maintenance work is carried out by a Mira Service Engineer or qualied
tradesperson.
18. Turn off the electrical and water supplies before removing the cover. The
electricity must be turned off at the mains and, if applicable, the appropriate
circuit fuse removed.
19. Mains connections are exposed when the cover is removed.
20. Moving parts are exposed when the cover is removed.
21. Isolate the electricity and water supplies and refer to “To contact us”, on the
back page of this guide, if any of the following conditions occur:
• The cover is not correctly tted and water has entered the case
• The case is damaged
• The Appliance begins to make an odd noise, smell or smoke
• The Appliance shows signs of a distinct change in performance, indicating
a need for maintenance
• The Appliance is frozen
22. The showerhead must be de-scaled regularly.
23. DO NOT; Position the handset to spray water directly on to the appliance.
Eg.When cleaning shower control.
24. Make sure all electrical connections are tight, to prevent overheating.
25. Unless otherwise stated, electrical equipment such as extractor fans and pumps
must not be connected via this product.

7
Caution!
1. Read all of these instructions and retain this guide for later use.
2. Pass on this guide in the event of change of ownership of the installation
site.
3. Follow all warnings, cautions and instructions contained in this guide, and on
or inside the shower
4. Installation must be carried out in accordance with these instructions, and must
be conducted by designated, qualied and competent personnel.
5. 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.
6. The showerhead must be de-scaled regularly
7. 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. The installation should be carried out by an electrician or contractor
who is registered with, or is a member of an association such as:
• National Inspection Council for Electrical Installation and Contracting
(NICEIC), throughout the UK
• The Electrical Contractors Association (ECA), England and Wales
• The Electrical Contractors Association of Scotland (ECAS)
8. The plumbing installation must comply with Water Supply Regulations/Bye-laws
(Scotland), Building Regulations or any particular regulations and practices,
specied by the local water company or water undertakers. The installation
should be carried out by a plumber or contractor who is registered with, or is
a member of an association such as:
• Institute of Plumbing (IOP), throughout the UK
• National Association of Plumbing, Heating and Mechanical Services
Contractors (NAPH & MSC), England and Wales
• Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),
Scotland and Northern Ireland
9. This applianceis 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 appliance by a person responsible for their safety.
10. Children should be supervised to make sure that they do not play with the
appliance.
11. Sunburn or skin conditions can increase your sensitivity to hot water. Make
sure that you set the shower to cooler temperature.
12. Having completed the installation, make sure that the user is familiar with the
operation of the appliance.
13. When the 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.

8
PACK CONTENTS
Tick the appropriate boxes to familiarise yourself with the part names and to conrm
that the parts are included.
q 1 x Temperature Knob
q3 x Rubber Feet
q1 x Mira Extreme
Documentation
q1 x Guarantee Registration Document
q 1 x Installer/Product Check List
q 1 x Push-Fit Release Tool
q3 x Rubber Wall Plugs
q 3 x Fixing Screws
q4 x Case Inserts

9
DIMENSIONS
All dimensions in millimetres
310
95
117
806628
20
210

10
SPECIFICATIONS
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, the maximum stored hot water temperature should
be set to between 60 and 65°C. Such temperatures are considered suf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 Extreme
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 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 effects 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 Duty Cycle – The Mira Extreme motor is continuously rated. The motor is
tted with a self-resetting thermal trip protection, designed to operate if motor
temperatures become too high due to abnormally high supply voltages.

11
1.10 Noise – The Mira Extreme 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 Extreme is xed to will also affect
the perceived noise level; solid walls will provide a quieter operation.
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 3mm contact
separation in each pole.
3.2 Power supply connection – The Mira Extreme 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 Absorbed power – Approximately 150 Watts under normal working
conditions.
4. Standards and Approvals
4.1 The Mira Extreme complies with all relevant directives for CE marking.

12
INSTALLATION REQUIREMENTS
1. General
1.1 Do not take risks with plumbing or electrical equipment.
1.2 Do not install the Mira Extreme in a position where it could become frozen.
1.3 Isolate electrical and water supplies before proceeding with the installation of
the Mira Extreme.
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 Extreme (minimum distance of 200
mm from the ceiling to allow for tting and removal of the cover). The position
of the Mira Extreme 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 Extreme must be tted onto the nished wall surface; that is, on top of
the tiles. Do not t the Mira Extreme 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 Extreme 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.
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 Extreme 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 mm2 if mechanically protected).
2.5 The minimum cable size (cross-sectional area) required is 1 mm2 under normal
conditions of installation.

13
2.6 A 30mA 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 sufcient.
3.2 Do not solder supply pipework with the Mira Extreme 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. Insuf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 off
quickly to the Mira Extreme, 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-off 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 to supply the Mira Extreme. If the effective head is less than
80 mm then the expected ow rate may not be achieved and air may be drawn
into the hot supply from the vent pipe, causing spluttering and temperature
uctuations at the showerhead.

14
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 Extreme.
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 effective
head required +80 Add the minimum effective 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 0 m x 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 effective
head required +80 Add the minimum effective head required +80
Required head of water =
x mm 505 Required head of water = x mm 509

15
A
Minimum
80 mm 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 Offs
Vent
Pipe
Correct Installation
4. Installation Diagrams
To prevent operational dif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 Offs
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 Extreme.
*Incorrect supply
connections
Cistern
Other Hot
Draw Offs 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.

16
Wall Entry Supply
Conguration
Top Entry Supply
Conguration
Bottom Entry Supply
Conguration
Rising Water
Supply Pipes
Falling Water
Supply Pipes
Rising Electrical Supply
(in miniature trunking)
Falling Electrical Supply
(in miniature trunking)
INSTALLATION
1. Before You Start
Decide where to site the Mira Extreme power shower. It should be positioned at a
height convenient for all the family. The ttings should be tted so the handset sprays
away from the Mira Extreme, either down the centre line of the bath or across the
shower cubicle opening.
The Mira Extreme can support top, bottom or wall entry congurations for both the
water and power supplies. Choose the appropriate conguration for your installation.
Refer to section: 'Installation, Conguring the Inlet Supplies'.

17
Thinned Section
of Case
Full Case
Insert Half Case
Insert
Full Case
Insert
Half Case
Insert
Top Cable
Channel
Bottom Cable
Channel
Thinned Section
of Case
2. Conguring the Inlet Supplies
The Mira Extreme is supplied with blanking plugs tted to all four ports of the inlet
manifold. The pipework conguration will determine which blanking plugs and case
inserts supplied must be tted to the case.
Use the table below for reference.
Supply Pipework Inlet Manifold Ports Case Inserts
Top Entry Inlet Fit blanking plugs to bottom
ports of the inlet manifold.
Fit half insert in the top inlet of
the case. Fit full insert in the
bottom inlet of the case.
Bottom Entry Inlet Fit blanking plugs to top ports
of the inlet manifold.
Fit full insert in the top inlet of
the case. Fit half insert in the
bottom inlet of the case.
Wall Entry Inlet Fit blanking plugs to bottom
ports of the inlet manifold.
Fit full insert in the top inlet of
the case. Fit full insert in the
bottom inlet of the case.
The Mira Extreme allows for electrical cable entry from the top, bottom or back of
the case. For top and bottom entries a thinned section of the case, covering the top
or the bottom cable channel, must be removed before the cable can be tted.

18
Cover Retaining
Screw
Cover Retaining
Screws
Push-t
Release
Tool
Blanking
Plug
Inlet
Manifold
This procedure removes the top two blanking plugs from the inlet manifold for top
or wall entry pipe congurations. Using this procedure as a guide, adjust the steps
for bottom entry congurations as appropriate.
2.1 Unscrew the three cover retaining
screws sufficiently and carefully
remove the cover.
Note! The cover retaining screws are
captive and need not be removed.
2.2 Insert the push-fit release tool
between the ange of the blanking
plug and the collet for each of the top
ports for the inlet manifold, and lever
the plugs outward.
Whilst holding back on the collet, pull
out each appropriate blanking plug by
hand.

19
25 mm minimum
Spill-over level
Hose Retaining Ring
Rubber
Feet
3.1 Decide on a suitable location for
the Mira Extreme avoiding buried
cables and pipes. Leave a minimum
distance of 200 mm from the ceiling
to allow for the tting and removal of
the cover. Make sure that when the
hose retaining ring is placed on the
lowest position on the slide bar, there
is a minimum distance of 25 mm
between the handset and the bath
or shower tray spillover when the
handset is hanging down.
3.2 Fit the three rubber feet into the
recesses in the case as shown. The
feet will reduce the noise transmitted
by the power shower through the
wall.
3.3 Using a spirit level, position the
Mira Extreme on the wall and mark
through the three xing points.
Note! Special consideration should
be given to the strength of the xing
arrangements when installing on to a
dry lined, stud partition or dry partition
wall structure. Installers may wish to
obtain alternative proprietary cavity
xings, or choose other options such
as fabricating rear supports using
wooden blocks; however, these
methods of fixing are beyond the
scope of this guide.
Warning! Make sure the marked
xing points are not inline with buried
cables and pipes before drilling.
3. Shower Installation
The following installation procedure is based on a bottom entry pipework conguration
(rising hot and cold water supplies) and a top entry electrical supply conguration (via
miniature trunking from above). Using this procedure as a guide, adjust the steps for
alternative water supply or electrical supply congurations as appropriate.

20
Trim the thinned
section of the
case covering the
cable channel.
Fixing
Points
Miniature
Trunking
All dimensions in millimetres
275
28
30
30
C
H
3.4 Drill 9.5 mm holes and t the rubber
wall plugs supplied.
3.5 Cut away and trim the thinned section
in the top of the case to allow the
electrical supply cable to run down
cable channel in the back of the
case.
3.6 Run the electrical supply cable in
surface mounted miniature trunking
(not supplied). Allow sufcient cable to
connect to the Mira Extreme terminal
block (approximately 275 mm). Strip
back approximately 30 mm of outer
cable insulation.
3.7 Hot and cold inlet supply connections
as marked are: Hot - Left, Cold -
Right.
Note! Supply connections must not
be connected in reverse.
Run the hot and cold water supply
pipes at 28 mm centres, make sure
that the pipe ends project into the
Mira Extreme by 30 mm to allow
connection into the inlet manifold.
Caution! Do not use stainless steel
piping for inlet pipework.
Caution! 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.