Kohler Mira Jump 7.5 kW User manual

11490289-W2-A
These instructions must be left with the user
Installation and User Guide
For SPARES,
ADVICE or REPAIRS
please call us free
on 0800 001 4040
(UK only)
Mira Jump
7.5, 8.5, 9.5 and 10.8 kW Electric Shower
Mira Sprint
8.5, 9.5 and 10.8 kW Electric Shower

21490289-W2-A

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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. DO NOT restrict the water ow from the shower outlet, temporarily
bending the shower hose or blocking the shower head while in use
can cause a hot shot of water to be discharged.
4. Cleaning and user maintenance shall not be made by children
without supervision.
5. The outlet must not be connected to any tap or tting other than
those specied.
6. The showerhead must be descaled regularly. Any blockage of the
showerhead or hose can cause damage to the shower.
7. Warning! DO NOT switch on if there is a possibility that the water
in the heater is frozen.
8. 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.
Important Safety Information

41490289-W2-A
9. 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.
10.DO NOT switch the shower on if water starts leaking from the shower
case. Isolate the electrical supply to the shower immediately.
11.DO NOT switch the shower on if the case appears to be damaged
or incorrectly tted. Isolate the electrical supply to the shower
immediately.
12.DO NOT increase the power setting or adjust the temperature
control rapidly while using the shower.
13.DO NOT switch the shower o󰀨 and back on while standing in the
water ow.
14.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.
15.When adjusting the handset mode, point handset away from body
and make sure that the water temperature has stabilised before
continuing to shower.
16.Use caution when altering the water temperature, always check
the temperature before continuing to shower.
17. Switch the shower o󰀨 at the electrical isolating switch when not in
use. This is recommended with all electrical appliances.
18.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.
19.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.
20.DO NOT install the shower in areas with high humidity and
temperature (i.e. Steam rooms and saunas).
21.DO NOT install the shower where it may be exposed to freezing
conditions. Ensure that any pipework that could become frozen is
properly insulated.

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22.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.
23.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.
24.DO NOT connect this shower to a Waste Water Heat Recovery
System as this may cause unstable or scalding temperatures to
be delivered from the shower head.
25.Always check the water temperature is safe before entering the
shower.
26.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.
27.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.
28.This appliance is intended to be permanently connected to the
water mains and not connected by a hose set.
29.The water inlet of this appliance shall not be connected to a water
supply obtained from any other water heating system.
30.Warning! This appliance is not to be used to provide a potable
water supply.
31.Maximum Static Pressure is 1000 kPa (10 bar).
32.Minimum Dynamic Pressure is 70kPa (0.7 bar) 7.5 kW, 8.5 kW,
9.5 kW and 100kPa (1.0 bar) 10.8 kW.

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Pack Contents
Tick the appropriate boxes to familiarize yourself with the part names and to conrm
that the parts are included.
Documentation
1 x Electric Shower
1 x Installation and User Guide
1 x Guarantee Brochure 1 x Installation Template (printed on
the inside of product carton)
1 x Component Pack
1x Showerhead
1x Hose
1 x Shower Fittings

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Wiring Diagram
BROWN
BROWN BROWN
BLUE
BLUE
GREEN
GREEN
BROWN
BROWN
BROWN
BLACK
BLACK BLACK
RED
RED
RED
Thermal Cutout
Dual Disc
Tank Connection
Load
Inlet Connector
Pressure/Power
Selector Switch
Solenoid Valve
Low Flow Neon
Power On
Neon
START/STOP
L
E
N
Internal Wiring Diagram

81490289-W2-A
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.
Domestic Light Commercial 
Heavy Commercial Healthcare 
Introduction
Products Covered
Recommended Usage
Product kW Model Number Colour
Mira Jump
7.5 J08 Hb
White / Chrome
8.5 J08 Db
9.5 J08 Eb
10.8 J08 Fb
Mira Sprint
8.5 J08 Da
9.5 J08 Ea
10.8 J08 Fa
Patents and Design Registration
Design Registration: 001375497-0001
Patents: GB 2 427 460
Ireland 85912

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Electrical Variant
7.5 8.5 9.5 10.8
Nominal Power at 240
V ac
7.5 kW 8.5 kW 9.5 kW 10.8 kW
Nominal Power at 230
V ac
6.9 kW 7.8 kW 8.7 kW 9.9 kW
Recommended MCB
Rating
32 A 40 A 40A 45 A
Max Supply Cable Size 16 mm²
Recommended RCD
Rating
30 mA tripping current
Recommended Isolator
Switch
45 A double-pole with 3 mm contact separation
Appliance Sealing Rating IP X4 - Suitable for installation in Zone 1
MaxAmbient Temperature 30°C
Min Ambient Temperature 2°C
Specications
Plumbing Variant
7.5 8.5 9.5 10.8
Min Dynamic Pressure 70 kPa
(0.7 bar)
70 kPa
(0.7 bar)
70 kPa
(0.7 bar)
100 kPa
(1.0 bar)
Max Dynamic Pressure 500 kPa (5.0 bar)
Max Static Pressure 1000 kPa (10 bar)
Min Static Pressure 50 kPa (0.5 bar)
Max Inlet Temperature 30°C
Min Inlet Temperature 2°C
Inlet Connection 15 mm Compression / Pusht Coupling
Max Water Hardness 200 ppm CaCO3
Outlet Connection 1/2” BSP Male
Dimensions
Height 356 mm
Width 225 mm
Depth 107 mm

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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 two years
from the date of purchase (shower ttings for one year).
For terms and conditions, refer to the back cover of this guide.
Guarantee
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 remove any batteries and 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.
European Conformity Information
This range of electric showers complies with the following European directives:
2014/35/EU - Low Voltage Directive (LVD),
2014/30/EU - Electromagnetic Compatibility Directive (EMC),
2011/65/EU - Restriction of Hazardous Substances Directive (RoHS)
This range of electric showers are high power appliances and are subject to
conditional connection. If the main electrical supply fuse is rated less than 80 Amps,
the local electricity supply company must be contacted to conrm if the electrical
supply is adequate.
This range of showers complies with the requirements of the UK’s water regulations.

11 1490289-W2-A
Installation Requirements
Plumbing
1. The plumbing installation must comply with all national or local water regulations
and all relevant building regulations, or any particular regulation or practice
specied by the local water supply company.
2. DO NOT use sealing compounds on any pipe tting or joints.
3. DO NOT install the product in a position in which service access is limited.
4. Decide on a suitable position for the shower (minimum distance of 200 mm from
the ceiling to allow for cover t and removal).
5. The position of the shower and shower ttings must provide a minimum gap of
25 mm between the showerhead and the spill over level of any bath, shower
tray or basin and a minimum gap of 30 mm between the showerhead and the
spill over level of any toilet, bidet or other appliance with a Fluid Category 5
backow risk (see diagram on page 12).
6. The shower is suitable for installation within the shower area and is tted with
a pressure relief valve. It must be positioned over a water catchment area with
the controls at a convenient height for the user.
7. The shower must be tted to a waterproof at and even wall surface.
8. DO NOT t the shower to the wall and tile up to the case.
9. DO NOT seal the gap between the shower and the wall surface.
10. The showerhead should be positioned so that it discharges down the centre
line of the bath or across the opening of a shower cubicle.
11. The showerhead must be directed away from the shower unit, during normal
use the showerhead must not spray directly on to the shower unit.
12. DO NOT apply excessive force to plumbing connections; always provide
mechanical support when making plumbing connections. Any soldered joints
should be made before connecting the shower.
13. This shower is not designed to be plumbed directly from the rear. For rear-entry
supply, add an elbow to the supply pipe and connect as a rising or a falling
supply.
14. 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.
15. Only use the inlet connector supplied with the shower. DO NOT use any other
type of tting.
16. A full bore/non restrictive servicing valve must be tted in a readily accessible
position adjacent to the shower to facilitate maintenance of the shower.
DO NOT use a valve with a loose washer plate (jumper) as this can lead to a
build up of static pressure.

121490289-W2-A
Zone of
Backflow Risk
30 mm
Minimum
Toilet or Bidet
FC5
Hand Basin
FC3
Bath or Shower
Tray FC3
Electric
Shower
25 mm
Minimum
25 mm Minimum
17. A water treatment device should be installed where the water hardness may
exceed 200 ppm. Malfunctions caused by excessive limescale formation are
not covered by this shower’s guarantee (see back page for details).
18. The installation must not cause the hose to be sharply kinked during normal
use.
19. DO NOT perform the electrical installation until the plumbing has been completed
and checked for leaks.
Hose retaining ring tted and shower ttings xed at a suitable height
preventing dirty water backow
Note: There will be occasions when the hose retaining ring will not provide
a suitable solution for Fluid Category 3 installations, in these instances
an outlet double check valve must be tted, this will increase the required
supply pressure typically by 10kPa (0.1 bar). Double check valves tted in
the inlet supply to the appliance cause a pressure build up, which a󰀨ect
the maximum static inlet pressure for the appliance and must not be tted.
For Fluid category 5 double check valves are not suitable.

13 1490289-W2-A
Plumbing and Electrical Schematic
Electrical
1. The electrical installation must comply with BS 7671 (commonly referred to as
the IEE Wiring Regulations) and all relevant building regulations, or any particular
regulation or practice specied by the local electricity supply company.
2. Ensure that all circuit protection devices, switches and cabling is adequate
for the rated current of the shower and that the rating of the electricity supply
company fuse and the consumer unit are adequate for the additional demand.
3. The shower must be earthed. Ensure any supplementary bonding complies
with the relevant regulations.
4. This shower is intended to be permanently connected to the xed electrical wiring
of the mains system. A separate supply must be provided from the consumer
unit to the shower.
5. DO NOT supply any other electrical equipment including extractor fans or pumps
via this product.
6. This shower must be provided with means for local disconnection that is
incorporated into the xed wiring in accordance with the relevant local wiring
regulations. This must be a double pole switch, which has at least 3 mm contact
separation in each pole. The switch can be a ceiling mounted pull-cord type
within the shower room or a wall mounted switch tted in the applicable zone
area.
7. A 30mA Residual Current Device (RCD) must be incorporated into the electrical
supply to this shower in accordance with wiring regulations.
8. DO NOT apply excessive force to the terminal block.
9. All electrical connections should be checked for tightness to prevent overheating
before switching on the electrical supply.
10. DO NOT switch on the electrical supply until the plumbing has been completed
and checked for leaks.

141490289-W2-A
Warning! Turn o󰀨 the electrical and water supplies before proceeding with
the installation of the shower. The electricity must be turned o󰀨 at the mains
and the appropriate circuit fuse removed, if applicable.
Note: An installation template is supplied to help you install the shower.
Cover
Screw
Screws
Remove the three screws that hold the cover
on and remove the cover.
Use the Installation Template provided (printed on the product carton), together
with a spirit level to mark the positions of the three xing holes.
Note! The shower should be positioned at least 200 mm from the ceiling.
Ensure that there are su󰀩cient lengths of supply pipe and electrical cable to
reach the connection points as shown on the template.
Drill three holes to suit the xing screws and wall plugs.
Caution! Do not drill into cables or pipes in the wall.
Falling
(entering the shower from the top).
Rising
(entering the shower from the bottom).
Determine the direction and route of the incoming water supply:
Note: - DO NOT use an incoming supply entering
the shower directly from the back. Add an elbow
to the supply pipe and connect it as a rising or
falling supply.
Installation
1
2
3
4

15 1490289-W2-A
Secure the shower to the wall with xing screws and wall plugs (supplied) or
appropriate wall xings for your installation.
Thoroughly ush the supply pipe.
Inlet
Supply
Pushfit
Elbow
Inlet Connector
Connect the inlet supply pipe to the inlet connector
using a push t elbow or an elbow with compression
nuts and olives.
Important! Do Not use pusht elbows that require
specialist tools for removal. Access to the inlet lter
is required periodically and so any connector needs
to be easily removed for maintenance.
Note! When making connections to the shower. Do
not use jointing paste products as damage to the
shower will occur.
Turn on the water supply and check connection for
leaks.
L (Live) = Brown wire
(Protective Earth) =
Green / Yellow sleeved wire
N(Neutral) = Blue wire
Terminal
Block (LH)
Terminal
Block (RH)
Terminal Blocks are provided on both the left
and right for convenience. Use the terminal
block location that is most appropriate for
your installation i.e. If the electric supply is
on the right hand side then use the right
hand terminal block.
Strip back su󰀩cient outer cable insulation to
enable routing to the terminal block.
Fit an earth sleeve to the earth wire.
Insert the wires into the terminal block.
Tighten the screws in the terminal block,
ensure the wires are secure and tight.
Ensure the earth bonding complies
with relevant regulations.
5
6
7
8

161490289-W2-A
For falling or rising supplies the cover has thinned
sections on the top and bottom that can be removed
to allow entry of the supply pipe and electrical cables.
Ensure the control dials are aligned with the spindles
and replace the cover.
Tighten the three cover 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.
Install the shower ttings (Refer to the Shower Fittings Installation and User
Guide packed with the product).
Cover
Screw
Screws
Thinned
Section
The shower must be commissioned before use,
please
refer to section: ‘COMMISSIONING’.
This completes the installation.
9
10
11
12
13

17 1490289-W2-A
‘Snap O󰀨’
section for
rear entry
Terminal
Block
(LH)
Replacing an Existing Electric Shower
This electric shower can replace showers of approximate size and shape.
Terminal Blocks are provided on both the left and right for convenience when
replacing a shower.
If the water entry point is on the right hand side of the shower then you will need to
alter the incoming pipework as shown below. The Mira Inlet Pipe Accessory can be
used to simplify this process. Refer to section: ‘ACCESSORIES’.
Existing
pipework
locations
‘Snap O󰀨’ case sections are provided for
ease of installation when using existing right
side, rear entry pipework.
Terminal
Block
(RH)
Warning! Isolate the electrical and water
supplies.
From the new
shower, remove
the three
screws that
hold the cover
on then remove
the cover.
Disconnect and remove the old
shower from the wall.
Cover
Screw
Screws
Place the shower on the wall where the previous shower was installed and
mark the positions of the three xing holes.
Note: Ensure that there are su󰀩cient lengths of supply pipe and electrical
cable to reach the connection points.
Remove the shower and drill three holes to suit the xing screws and wall
plugs. Caution! Do not drill into cables or pipes in the wall.
1
2
3
4

181490289-W2-A
Thoroughly ush the supply pipe.
Secure the shower to the wall with xing screws
and wall plugs (supplied) or appropriate wall xings
for your installation.
Connect the inlet supply pipe to the inlet connector
using a push t elbow or an elbow with compression
nuts and olives.
Turn on the water supply and check connection
for leaks.
Use the terminal block location that is most
appropriate for your installation i.e. If the electric
supply is on the right hand side then use the right
hand terminal block.
Strip back su󰀩cient outer cable insulation to enable
routing to the terminal block.
Fit an earth sleeve to the earth wire.
Insert the wires into the terminal block.
Tighten the screws in the terminal block, ensure the
wires are secure and tight.
Ensure the earth bonding complies with relevant regulations.
L(Live) = Brown wire
(Protective Earth) = Green /Yellow sleeved wire
N(Neutral) = Blue wire
Terminal Block (LH) Terminal Block (RH)
5
6
7
8

19 1490289-W2-A
9
10
11
12
13
For falling or rising supplies the cover has thinned
sections on the top and bottom that can be removed
to allow entry of the supply pipe and electrical cables.
Cover
Screw
Screws
Thinned
Section
Ensure the control dials are aligned with the spindles
and replace the cover.
Tighten the three cover 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.
Install the shower ttings (Refer to the Shower Fittings Installation and User
Guide packed with the product).
The shower must be commissioned before use, please refer to section:
‘COMMISSIONING’.
This completes the installation.

201490289-W2-A
Commissioning
Before carrying out the commissioning procedure install the Shower Fittings,
refer to the Shower Fittings Installation and User Guide.
Turn temperature control
to the cold position.
Turn power control to
low.
Switch on the electrical
supply.
Push START/STOP
button.
Water flows freely within a
few seconds, temperature
remains cool
Turn power control to
Eco.
COLD
0 - 15 secs
HOT
Turn power control to
High.
Temperature will rise
slightly.
5 - 10 secs
COLD
HOT
Temperature will rise
further.
5 - 10 secs
COLD
HOT
1
4
7
2
5
8
3
6
9