PUMPED ELECTRIC Maintenance Guide SHOWER

r
we
Po
low
F
Low
m
h
diu
Hig
Me
Low
Tem
Sta
rt
pe
ure
rat
Sto
p
PUMPED ELECTRIC
SHOWER
Installation, Operation &
Maintenance Guide
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER
1
Contents
Section
1 ..... Introduction
Page
................................................................... 3
2 ..... Important Safety Information .......................................... 4
3 ..... Pack Contents Checklist ................................................. 7
4 ..... Dimensions
................................................................... 8
5 ..... Wiring Diagram ................................................................. 9
6 ..... Specifications ................................................................. 10
7 ..... Installation Requirements ............................................. 11
8 ..... Installation
................................................................. 17
9 ..... Commissioning............................................................... 20
10 ... Operation ........................................................................ 22
11 ... Fault Diagnosis ............................................................... 26
12 ... Maintenance .................................................................... 28
13 ... Spare Parts ...................................................................... 38
14 ... Optional Accessories ..................................................... 40
Guarantee, Customer Care Policy, and How to contact us
.............................................................................. Back cover
2
Section
1
Introduction
Thank you for purchasing a quality Mira product. To exploit the full potential of your new
product, please take time to read this guide thoroughly, having done so, keep it handy for
future reference.
The Mira Elite 2 is a high performance tank-fed (cistern-fed) pumped electric shower for
use where the mains water supply pressure is too low, unreliable or non existent, to
operate a conventional electric shower.
The Mira Elite 2 features an internal pump unit which has been designed to provide all year
round performance, even at the highest flow rates which are necessary during the summer
months. The Elite 2 has separate controls for power selection and temperature/flow
adjustment. The Elite 2 MUST have its own separate cold water supply from the cistern
to ensure correct operation.
Mira Elite 2, 9.8 kW @ 240 Volts white/chrome finish
Mira Elite 2, 9.0 kW @ 230 Volts white/chrome finish..
If you experience any difficulty with the installation or operation of your new shower
control, then please refer to the Maintenance and Fault Diagnosis section, before
contacting Kohler Mira Limited. Our telephone and fax numbers can be found on
the back cover of this guide.
3
Section
21
Important Safety Information
1. Warning!
1.1. Products manufactured by us are safe and without risk provided they are
installed, used and maintained in good working order in accordance with our
instructions and recommendations.
1.2. THIS MIRA ELITE 2 MUST BE EARTHED.
In accordance with the current edition of ‘The Plugs and Sockets etc. (Safety)
Regulations' in force at the time of installation, this Mira Elite 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. DO NOT connect the Elite 2 to a mains-fed water supply. Such a connection will
damage the appliance, and is not covered under the manufacturer’s guarantee.
1.5. DO NOT allow the Elite 2 to be run dry. We would recommend a minimum
25 gallon/113 ltr cold storage tank for water supply.
1.6. 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 properly
insulated.
1.7. DO NOT operate the appliance if it is frozen. Allow the appliance to thaw before
using again.
1.8. DO NOT operate this appliance if water leaks from the pressure relief valve,
maintenance will be required before the appliance can be safely used.
1.9. 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.
1.10. There are no user serviceable components beneath the cover of this appliance.
Only a competent tradesperson should remove the cover.
1.11. 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.
1.11.1. If the cover is not correctly fitted and water has entered the Mira
Elite 2 case.
1.11.2. If the case is damaged.
4
1.11.3. If the appliance begins to make an odd noise, smell or smoke.
1.11.4. If the appliance shows signs of a distinct change in performance,
indicating a need for maintenance.
1.11.5. If the appliance is frozen.
1.12. Isolate the electrical and water supply before removing the cover.
1.13. Mains connections are exposed when the cover is removed.
1.14. Refer to the wiring diagram before making any electrical connections.
1.15. 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 on or
inside the Mira Sport.
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.
2.4.2. The Electrical Contractors Association (ECA), England and Wales.
2.4.3. The Electrical Contractors Association of Scotland (ECAS).
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/Byelaws (Scotland), Building Regulations or any particular regulations
and practices, specified by the local water company or water undertakers. The
installation should be carried out by a plumber or contractor who is registered, or
is a member of, an association such as:
5
2.6.1. Institute of Plumbing (IOP), throughout the UK.
2.6.2. National Association of Plumbing, Heating and Mechanical Services
Contractors (NAPH & MSC), England and Wales.
2.6.3. Scottish and Northern Ireland Plumbing Employers’ Federation
(SNIPEF), Scotland and Northern Ireland.
2.7. Anyone who may have difficulty understanding or operating the controls of
any shower should be attended whilst showering. Particular consideration
should be given to the young, the elderly, the infirm, or anyone
inexperienced in the correct operation of the controls.
2.8. 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.
6
Section
Pack Contents Checklist
3
Tick the appropriate boxes to familiarize yourself with the part names and to
confirm that the parts are included.
1. Mira Elite 2
3 x Rubber Feet
1 x Olive
r
we
Po
w
Flo
Low
Me
diu
m
Hig
h
1 x Compression Nut
W
LO
Tem
Sta
rt
pe
ure
rat
Sto
p
3 x Wall Plug
1 x Mira Elite 2
3 x Fixing Screws
2. Documentation
1 x Installation, Operation and Maintenance Guide
1 x Installer Product Checklist
1 x Customer Support Brochure
7
Section
Dimensions
4
270 mm
85 mm
Power
Low Flow
Low
Medium
High
344 mm
Temperature
Start Stop
8
Section
Wiring Diagram
5
88 Red
Pressure/Power
Selector Switch
86 Brown
High
Load
Medium
131 Orange
Motor
132 Blue
129 Blue
Thermal
Trip
127 Brown
Thermal Cutout
Dual Disc
3
7
4
5
L
124 Black
126 Brown
128 Blue
1
2
130 Black
N
125 Black
97 Brown
96 Red
Low Flow
Neon
Tank Connection
Inlet Connector
On/Off
L
N
122 Green
123 Green
Solenoid Valve
121 Blue
120 Brown
Power On
Neon
E
9
Section
6
Specifications
1. Plumbing
1.1. The 15 mm inlet compression connector incorporates an inlet filter, which
swivels to allow two entry positions, top and back.
1.2. The outlet terminates with a 1/2" BSP male thread for connection to a Mira
flexible shower hose.
2. Electrical
2.1. The terminal block will not accept cable larger than 16 mm2.
2.3. The motor is fitted with a self resetting thermal trip protection device,
designed to operate if the ambient temperatures become too high. The
maximum recommended ambient temperature for the Elite 2 is 30°C.
2.4. The following power ratings for the heater tanks are available with their
respective voltages:
Mira Elite 2 9.8 @ 240V 45 Amps
Mira Elite 2 9.0 @ 230V 40 Amps
2.5. The motor will absorb approximately 100 Watts maximum power under
normal working conditions.
3. Standards and Approvals
3.1. The Mira Elite 2 has been designed to comply with the requirements of the
British Electrotechnical Approvals Board (BEAB) and the requirements of UK
Water Regulations/Bylaws (Scotland).
3.2. This Mira Elite 2 complies with all relevant directives for CE marking.
10
Section
Installation Requirements
7
1. Plumbing
Read the section “Important Safety Information” first
1.1. The Elite 2 is designed to operate with water supply pressures from 0.008
bar (80 millimetres head) to 1 bar (10 metres head) (i.e. the vertical
distance from the base of the cold cistern to the top of the Elite 2).
However, the minimum head required will increase with pipe length and the
guide given in paragraph 1.17. should be used to ensure that adequate
head is available for any given installation.
The Elite 2 MUST have its own separate supply from the cistern.
25 Gallon/113 Ltr Cistern.
Correct Cistern Take Off
25 mm
Positioned away from the ball
valve, with a 25 mm distance up
from the base of the cistern.
This connection will prevent air
and debris entering the shower
supply.
Incorrect Cistern Take Off
Debris from the bottom of the
cistern and air generated when
the cistern refills will enter the
shower supply.
1.2. The Elite 2 is suitable for installation within the shower area and is fitted
with a pressure relief valve. It must be positioned over a water catchment
area with the controls at a convenient height. The shower fitting should be
positioned so that it discharges down the centre line of the bath, or across
the opening of a shower cubicle, and must be directed away from the
shower unit.
1.3. Use a minimum of 15 mm diameter supply pipework. It should be noted,
however, that on long pipe runs this should be increased to 22 mm (refer to
para 1.17. for guidance). When using flexible plastic pipe it is essential that
the pipe is kept flat and not looped up at any point as this may lead to air
build up which may impair performance of the shower.
11
1.4. We recommend that a non restrictive (free flowing) isolating valve is fitted into
the supply from the cold water cistern, for maintenance purposes.
1.5. The Elite 2 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. This Elite 2 is
designed to be ventilated. Failure to do this may cause product failure.
1.6. Inlet: 15 mm inlet compression connector is designed to accept plumbing
supplies from the top or back.
1.7. Back entry plumbing is accommodated without the need to recess the
15 mm inlet compression connector, enabling the wall’s surface to be completed
and sealed to prevent water ingress, before final fitting.
1.8. Swivel the inlet connector assembly to suit (not directly back into the wall). Avoid
trapping the green earth bonding wire.
1.9. Use only the 15 mm inlet compression connector supplied with the Elite 2, do not
use any other types of fitting.
1.10. Outlet: 1/2" BSP male, to accept Mira flexible hose.
1.11. Refrain from applying excessive force when making connections.
Note! Excessive force on the pump housing can impair pumping
performance. Make sure that the supply pipe is trimmed and bent such that
the 15 mm inlet connector sits (or can be lightly pressed) easily on the back
of the clamp bracket prior to connection with the pump housing.
1.12. To avoid damage to the case when soldered fittings are used, pre-solder the
pipework and fittings before connecting them to the 15 mm inlet compression
connector.
1.13. Supply pipework MUST be flushed to clear debris before connecting the Elite 2.
1.14. 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 contamination from backsiphonage (refer to Figure 1). The supplied hose retaining ring should meet the
great majority of user 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
build-up, which could exceed the maximum static inlet pressure for the appliance.
12
1.15. When installed in very hard water
areas (above 200 ppm temporary
hardness) your installer may advise
the installation of a water treatment
device, to reduce the effects of
limescale formation. Mira Elite 2
malfunction due to excessive
limescale formation is not covered
by the manufacturer’s guarantee.
Your local water company will be
able to advise the hardness of water
in your area.
Hose Retaining
Ring
25 mm Minimum
Spill-over
Level
Figure 1
1.16. Avoid layouts where the hose will be sharply kinked. This may reduce the life of
the hose.
1.17. Long pipe runs and excessive use of 90° elbows will significantly reduce the
available head to supply the Elite 2. The pipework table should be completed to
ensure that adequate head is available for any given application.
Plumbing Schematic Diagram (to be used with pipework table overleaf)
A
B
X
Power
Low Flow
Low
Medium
High
Temperature
Start Stop
13
The dimension (x) is calculated from the table below to give you a minimum effective
head of 80 mm which is necessary to produce a satisfactory shower in all conditions.
Pipework
Quantity
Size
Head Loss (mm)
15 mm Pipe
(A)
+ (B)
x 120
22 mm Pipe
(A)
+ (B)
x 20
15 mm Elbow
No.
Elbows
x 55
22 mm Elbow
No.
Elbows
x 15
Minimum Effective
Head
80
(x) mm
Example!
Based on the diagram Figure X with 15 mm pipework and A = 1.5 m,
B = 0.75 m.
Quantity
Size
14
15 mm Pipe
(A)
22 mm Pipe
(A)
15 mm Elbow
No.
22 mm Elbow
No.
1.5
+ (B) 0.75
Head Loss (mm)
2.25
+ (B)
1
Elbows
Elbows
x 120
270
x 20
1
x 55
55
x 15
Minimum Effective
Head
80
(x) mm
405
2. Electrical
Read the section “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. In a domestic installation, the electricity company fuse must be a minimum
of 80 Amps. As the Elite 2 is a high power unit it is essential to contact your
electricity supply company to ensure that the supply is adequate for the
purpose.
Mira Elite 2 9.8 @ 240V 45 Amps
Mira Elite 2 9.0 @ 230V 40 Amps
Note! Voltage drop due to local heavy demand will reduce the shower
performance.
2.3. A separate permanently connected supply must be taken from the
consumer unit to the shower, via a double pole switch, with at least a 3 mm
contact separation. The switch can be a ceiling mounted pullcord switch
within the bathroom, or a wall mounted switch in an adjacent room.
Suitable ceiling mounted pullcord switches for Mira electric showers
include:Make
Ashley
Crabtree
MK
Tenby
Volex
Model
CS445N
2167
3164 WHI
CS7545
VX9706
Rating
45 Amp
40 Amp
45 Amp
45 Amp
40 Amp
2.4. The minimum cable size required is 6 mm2. To obtain full advantage of the
electrical power provided by the Elite 2, use the shortest possible cable
route from the consumer unit to the Elite 2.
As a guide only, the maximum 6 mm2 cable length allowed with a 5 Volt
drop and RCD installed, is 16 m for an Elite 2, 9.8. If longer cable runs are
required then 10 mm2 should be used. Refer to the IEE Wiring Regulations
for further clarification.
2.5. We recommend the inclusion of a 30 mA residual current device (RCD).
This may be part of the consumer unit or a separate unit.
2.6. The terminal block will not accept cable larger than 16 mm2.
15
2.7. The Elite 2 must be earthed by connecting the supply cable earth conductor
to the earth terminal. All exposed metal parts within 3 metres of the shower,
within the shower room, must be electrically bonded to earth using a
minimum cable size of 2.5 millimetres2.
2.8. Do not turn on the electrical supply until the plumbing has been completed.
Ensure the water supply is turned on as the unit must not be operated dry.
2.9. The Elite 2 is fitted with a pump motor, and some mechanical noise can be
expected in addition to the noise generated by the spray from the handset.
The type of wall surface will affect the perceived sound levels. Stud partition
and panel walls have a tendency to resonate, whilst solid walls will provide
the quietest operation. The tone of the pump motor may change when the
temperature control knob is adjusted. This is quite normal.
Plumbing and Electrical Schematic Diagram
Cold Water Storage
Cistern (Tank)
Hot Water
Cylinder Vent
Pipe
Warning Pipe
Independent Cold Water
Supply to Shower
Cold Water
Mains Feed
Cistern Fed
Cold Supply
to Other
Outlets
Hot Water
Cylinder Feed
16
Isolating
Valve
Power
Low Flow
Low
Medium
Temperature
High
Consumer Unit
Start Stop
Double Pole
Pullcord Switch
Hose Retaining
Ring
Section
Section
8
Installation
1. Mira Elite 2
Read the section “Important Safety Information” first.
WARNING! Isolate the electrical and water supplies before proceeding with the
installation of the Mira Elite 2.
Note! An installation template is supplied on the internal packaging to help you
install the Mira Elite 2.
1.1. Decide on a suitable position for the Mira Elite 2 (minimum distance of 200
mm from the ceiling to allow for cover fit and removal). The position of the
Mira Elite 2 and the shower fittings must provide a minimum gap of 25 mm
between the spill-over level of the shower tray/bath and the handset. This
is to prevent backsiphonage.
1.2. Unscrew the four cover retaining screws sufficient to remove the cover
and the service tunnel.
Note! The cover retaining screws are captive and should remain in the
case and service tunnel.
1.3. Remove the cover.
1.4. Remove the service tunnel.
1.5. Determine the direction of the inlet water supply: top (falling) or back inlet .
Note! Make sure that the back inlet does not go directly back into the wall.
Use a soldered elbow
1.6. Swivel the inlet connector assembly to suit. Remove the inlet blanking cap.
Avoid trapping the green earth bonding wire.
1.7. A case insert is supplied with the Mira Elite 2, this can be removed to suit
the supplies entering the product. Before fitting the unit, if necessary, make
sure that the case insert is fitted.
1.8. Thoroughly flush the CISTERN FED cold water supply pipe. The
supply must be clean and free from debris BEFORE connecting the
Mira Elite 2.
17
1.9. An installation template is supplied on the internal packaging to help you
install the Mira Elite 2. Put the installation template on the wall and mark
through the positions of the fixing holes. Make sure that sufficient electrical
supply cable is available for connection to the terminal block.
1.10. Drill and plug the top two fixing holes. Secure the Mira Elite 2 to the wall
with the screws provided. Drill the bottom fixing hole with the product in
place. Alternative fixings (not supplied) may be necessary for some wall
structures. Avoid drilling into any supply cable/pipe.
Note! Rubber feet are supplied with the Mira Elite 2. The rubber feet
locate in recesses in the rear of the case and can be fitted if required.
1.11. Install the CISTERN FED cold water supply pipe.
1.12. Make the connection to the CISTERN FED cold water supply pipe.
1.13. Bring the electrical supply cable into the case through one of the cable
entry points.
1.14. Strip back sufficient of the outer cable insulation to enable routing to
terminal block.
1.15. Fit an earth sleeve to the earth conductor. Connect the conductors firmly
into the terminal block. Make sure that the bare cores of each conductor are
securely trapped within each conductor clamp.
L = Red wire
N = Black wire
E = Yellow/Green sleeved wire.
1.16. Re-tighten the terminal block screws.
1.17. If necessary, fit an earth bonding clamp to the copper supply pipe and
ensure bonding complies with the relevant regulations in force at the time of
installation.
1.18 Ensure the drip shield and dust shield are correctly installed. DO NOT
operate the shower if the dust and drip shields are not fitted.
1.19. Refit the service tunnel and the cover and tighten the four cover retaining
screws.
1.20. Fit the shower fittings. Refer to seperate instructions.
18
Important! Do not fit the Mira Elite 2 to the wall and tile up to the case. The Mira Elite 2 must be
fitted on to a finished flat and even wall surface (small pillars moulded on to the back of the case
allow air circulation).
Cistern Fed Cold Water
Supply Pipe
Captive Cover Retaining
Screws
Rubber feet
can be fitted
to the rear of
the case if
required.
Fixing Screw
Drip Shield
(Do not operate
the shower if the
drip shield is not
fitted.)
Dust Shield
(Do not operate
the shower if the
dust shield is not
fitted.)
Terminal
Block
Fixing Screw
Electrical
Supply Cable
Inlet Connector
Assembly
(The inlet connector
assembly can be
swivelled to suit the
supply)
Fixing Screw
Service Tunnel
Installation of the Mira Elite 2
19
Section
9
Commissioning
1. Mira Elite 2
If you are unsure how electric showers work, please read through the Operation Section
before continuing.
1.1. Make sure that the START/STOP button is in the
outermost position and that the electrical supply has
been isolated.
1.2. Turn the BOTTOM control knob fully anticlockwise to
the full cold position.
1.3. Turn the water supply fully on at the isolating valve,
check that water is not leaking from the bottom of the
case.
1.4. Turn the TOP control knob to 'LOW'.
1.5. Switch on the electrical supply at the double pole
switch. The 'POWER' neon will provide a visual
indication that the electrical supply is connected.
1.6. Press the START button. Check that water flows freely
from the shower within a few seconds. If not refer to the
Maintenance Section. The water from the handset
will be at full force and at a cool temperature.
1.7. Turn the BOTTOM knob slowly clockwise. As the knob
is rotated the flow will be reduced and the temperature
will remain cool - this shows that the flow regulator
assembly is operating correctly. Return the knob
anticlockwise to full cold position.
20
1.8. Turn the TOP knob to the 'MEDIUM' position. The
temperature of the water should rise slightly. Allow a
few seconds for the warm water to reach the handset
- this shows that the 'MEDIUM' power setting is
operating correctly.
1.9. Turn the TOP knob to the 'HIGH' position. The
temperature of the water will rise further - this shows
that the full power setting is operating correctly.
1.10. Set the shower temperature by rotating the BOTTOM
knob as necessary. Turn the knob clockwise for hotter
water and anticlockwise for cooler water.
1.11. When the required temperature is reached, push the
STOP button to stop the flow. Water will continue to
flow from the handset for a few seconds, as water is
purged from the tank. Isolate the power at the double
pole switch.
Note! A slight hissing sound may be heard from the Mira Elite 2 during operation.
High shower temperatures will effect the tone. This is quite normal in use.
21
Section
10
Operation
1. Advice to Users
Read the section “Important Safety Information” first
1.1. Pumped electric showers work by taking cold water and passing it over the
heating elements contained in the heater tank of the shower.
1.2. The showering temperature is adjusted by turning the temperature control
knob, which varies the flow of cold water across the elements. The slower
the rate of flow, the warmer the water and vice versa. The holes in the
spray plate of the shower handset should always be kept clean to maintain
a consistent flow and assist in temperature control.
1.3. All Mira electric showers are designed to stabilise temperature changes
caused by water pressure fluctuations. Average shower temperatures will
be held within a 6°C band, provided that the minimum required pressure is
maintained.
1.4. The current design of Mira pumped electric showers does not
thermostatically control the showering temperature, and as such cannot
react to changes in temperature caused by a change in mains voltage, or
changes in the cistern-fed water temperature.
1.5. The temperature of cistern-fed water will vary between Summer and Winter,
and therefore, the temperature control knob will need to be adjusted to take
account of these seasonal conditions. The length of dead leg of the water
supply pipe or its proximity to hot pipes, may effect the showering
temperature.
1.6. If the water temperature reaches an unsafe level, the thermal switch
assembly turns off the elements. When the water temperature falls the
elements will be turned on. The switch will cycle on/off/on if the flow rate is
not increased, and the shower temperature reduced. The “OVERHEAT”
light on the Elite 2 will provide a visual indication of this condition.
1.7. When the shower is first turned on or a different temperature is selected,
there will be a slight delay before the shower temperature changes, to allow
the previously heated water to be used up.
22
Temperature Rise Versus Flow for the Mira Elite 2
55
Temperature Rise °C
50
45
40
35
9.8 kW @ 240 V
30
9.0 kW @ 230 V
25
20
15
10
2
3
4
5
6
7
8
9
10
11
12
Flow Rate (litres per minute)
(i)
All heaters have a manufacturing tolerance. Thus flow rates can be above
or below those indicated.
(ii)
The left-hand scale is temperature rise. (Temperature rise = Showering
temperature minus the incoming cold water temperature).
2. Mira Elite 2
Read the section “Important Safety Information” first.
THE SPRAY PLATE HOLES MUST BE KEPT CLEAR. The spray plate should be
regularly removed and cleaned in descalent. Lack of regular spray plate cleaning will
lead to poor performance and cause early failure of the Mira Elite 2.
2.1. Switch on pullcord or wall mounted switch. The 'POWER' neon will
provide a visual indication that the switch is on.
2.2. Press the START button.
2.3. Rotate the TOP control knob to position 'HIGH' (Full Power).
2.4. Wait 15-20 seconds for warm water to reach the handset.
23
2.5. If necessary turn the BOTTOM control knob slowly to adjust temperature. Allow
10-15 seconds for the adjusted temperature to reach the handset. The control
knob operates through approximately ¾ of a turn from cold to hot.
Clockwise rotation will give warmer water with less flow. Anticlockwise rotation
will give cooler water with more flow.
2.6. TO TURN OFF the Mira Elite 2 press the STOP button.The shower will continue
to flow for a few seconds before stopping.
2.7. A small amount of water may be retained in the shower handset after the shower
control has been turned off. This may drain over a few minutes.
For summer economy showering use position 'MEDIUM' (Half Power) on the
control. For a cold shower select 'LOW'.
2.8. Switch off at the pull-cord or wall mounted switch.
24
=
High
=
Medium
=
Low
COLD
Power
Low Flow
Low
Medium
High
Temperature
Start Stop
Stop Start
Press to Start/Stop
Hotter
Cooler
Operation of the Mira Elite 2
25
Section
11
Fault Diagnosis
Fault Diagnosis
Warning! There are no user serviceable components beneath the cover of the Elite 2.
Only a competent tradesperson should remove the cover.
The trouble shooting information tabled below gives details on what you can do as a user
without removing the cover, should you encounter difficulties whilst operating the
shower.
Note! Should these remedies prove to be unsuccessful in solving your problem, contact
your installer for advice.
Malfunction
Elite 2 fails to operate
in any switch position.
No water or very low
flow rate.
Cause
Remedy
Electrical supply isolated
Switch on electrical supply via
at double pole switch ( the the pullcord.
pullcord).
Fuse blown or MCB/RCD
tripped indicating possible
electrical fault.
Renew the fuse or reset the
MCB/RCD. If fault persists,
contact your installer.
Handset sprayplate
blocked.
Remove & clean: Refer to
Maintenance in the I, O & M
guide for the fittings.
Incoming water supply
stop valves or isolating
valve turned down or off.
Turn stop/isolating valve to
fully on position.
Hose or Handset blocked.
Clear blockage or renew.
Possible blocked inlet filter Clean or replace.
(Continued)
26
Malfunction
Cause
Remedy
The temperature knob is
positioned at an unsafe
level causing the Elite 2
thermal trip to operate
and cut the power to the
heater tank.
Turn the temperature knob
sufficiently anti clock-wise to
increase water flow and
reduce temperature.
Handset sprayplate
blocked.
Remove and clean (Refer to
Maintenance in the I, O & M
guide for the fitings).
Unable to select a
cool enough shower
during summer
months.
Due to the rise in water
mains supply temperature,
the power rating may be
too high.
Turn the TOP knob to
MEDIUM setting and
re-adjust temperature knob
until suitable temperature is
achieved.
Operation of
temperature knob has
little or no effect on
water temperature.
Handset sprayplate
blocked.
Remove Handset and clean
(Refer to Maintenance in the
I, O & M guide for the fitings).
If fault still persists contact
your installer.
Shower cycles from
hot to cold.
No water and motor
tone increases.
Cistern has run out of
water.
Turn off the Elite 2
immediately and resolve
cistern storage difficulty.
Internal pump unit faulty
or thermal trip has
operated.
Wait for internal pump/shower
to cool down. If still faulty
contact your installer.
27
Section
12
Maintenance
1. General
Read the section “Important Safety Information” first.
Providing the shower has been correctly installed and is operated in accordance with the
instructions contained in this guide, difficulties should not arise. If any maintenance is
required then it must be carried out by a competent tradesperson for whom the
maintenance instructions are provided. Before replacing any parts ensure that the
underlying cause of the malfunction has been resolved.
WARNING! There are no user serviceable components beneath the cover of the Elite 2.
Only a competent tradesperson should remove the cover.
2. Cleaning
Many household cleaners contain abrasives and chemical substances, and should not
be used for cleaning plated or plastic fittings. These finishes should be cleaned with a
mild washing up detergent or soap solution, and then wiped dry using a soft cloth.
3. Flow Valve and Switch Assembly - Removal and
Installation
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
3.1. Unscrew the four cover retaining screws sufficient to remove the cover and
service tunnel.
Note! The cover retaining screws are captive and need not be removed.
3.2. Remove the hose from the outlet connector and loosen the connection to the inlet
connector assembly.
3.3. Remove the screw that holds the terminal block in position. This will give you
sufficient room to carry out the procedure without disconnecting any mains
electrical wiring.
3.4. Remove the screws that hold the inlet clamp bracket in position and remove the
clamp bracket.
3.5. Remove the screws that hold the flow valve and switch assembly and the heater
tank in position.
28
3.6. Carefully pull the flow valve and switch assembly and the heater tank away from
the case. Make sure that you ease the flow valve and switch assembly off the
motor/pump assembly..
3.7. Remove the outlet connector from the heater tank.
3.8. Remove the heater tank from the flow valve and switch assembly.
3.9. Remove the microswitches from the flow valve and switch assembly.
3.10. Make a note of the positions of the solenoid wires on top of the heater tank.
Remove the solenoid wires.
3.11. Remove the flow valve and switch assembly.
3.12. Refit the components in reverse order. Make sure that the electrical wires are
installed in the correct positions.
29
Cistern Fed Cold Water
Supply Pipe
PCB Assembly
Motor/Pump Assembly
Splash Guard
Heater Tank
Microswitch
Electrical
Supply Cable
Switch Assembly
Terminal Block
Flow Valve
Inlet Connector
Assembly
Clamp Bracket
Clamp Bracket
Retaining Screws
Heater Tank
Retaining Screws
Outlet Connector
Flow Valve and
Switch Assembly
Retaining Screw
Flow Valve and Switch Assembly - Removal and Installation
30
4. Heater Tank - Removal and Installation
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
4.1. Unscrew the four cover retaining screws sufficient to remove the cover and
service tunnel.
Note! The cover retaining screws are captive and need not be removed.
4.2. Remove the hose from the outlet connector and loosen the connection to the inlet
connector assembly.
4.3. To improve access to the terminals on the top of the tank, the terminal block may
be loosened by removing the fixing screw.
4.4. Remove the screws that hold the clamp bracket in position and remove the clamp
bracket.
4.5. Remove the screws that hold the flow valve and switch assembly and the heater
tank in position.
4.6. Carefully pull the flow valve,switch assembly and heater tank away from the
case.
4.7. Make a note of the positions of the wiring on top of the heater tank.
4.8. Remove the blue wire and associated solenoid wires.
4.9. Remove the brown and red wires from one side of the thermal switch and the
second brown wire from the other side of the thermal switch.
Caution! Do not press printed disc on the thermal switch as this will make the
component unserviceable.
4.10. Remove the fixing screw and remove the thermal switch and the green earth
bonding wire from the top of the heater tank.
4.11. Remove the red and black tank wires from the microswitches.
4.12. Separate the heater tank from the flow valve and switch assembly.
4.13. Remove the outlet connector from the heater tank.
4.14. Refit the components in reverse order. Make sure that the electrical wires are
installed in the correct positions. In particular the green earth bonding wire must
be reconnected above the thermal switch flange.
31
Cistern Fed Cold Water
Supply Pipe
PCB Assembly
Motor/Pump Assembly
Splash Guard
Heater Tank
Microswitch
Electrical
Supply Cable
Switch Assembly
Terminal Block
Flow Valve
Inlet Connector
Assembly
Clamp Bracket
Heater Tank
Retaining Screws
Outlet Connector
Clamp Bracket
Flow Valve and
Retaining Screws
Switch Assembly
Retaining Screw
Heater Tank - Removal and Installation
32
5. Motor/Pump Assembly - Removal and Installation
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
5.1. Unscrew the four cover retaining screws sufficient to remove the cover and
service tunnel.
Note! The cover retaining screws are captive and need not be removed.
5.2. Remove the clamp bracket retaining screws from both clamp brackets. Remove
the clamp brackets.
5.3. Remove the motor dust shield
5.4. Ease the motor/pump assembly away from the inlet connector assembly and the
flow valve and switch assembly.
5.5. Carefully pull the motor/pump assembly away from the case and the mounting
block.
5.6. Make a note of the positions of the wiring on top of the motor/pump assembly.
5.7. Remove the blue wire and the orange wire from the top of the motor/pump
assembly and remove the motor/pump.
5.8. Install the transfer/inlet tube to the motor/pump assembly as follows:
-
Fit the transfer tube to the motor/pump assembly making sure that
the location pip on the motor/pump assembly aligns with the slot in
the transfer tube.
-
Tighten the top clamp.
-
Fit the motor/pump assembly in position and swivel the inlet tube so
that in locates correctly in the inlet connector assembly.
-
Tighten the bottom clamp.
5.9. Refit the components in reverse order. Make sure that the electrical wires are
installed in the correct positions and that the motor dust shield is replaced.
33
Cistern Fed Cold Water
Supply Pipe
PCB Assembly
Heater Tank
Motor/Pump
Assembly
Motor Dust
Shield
Electrical
Supply Cable
IN
RN
WA230 OVT
G
N
DOMOVE
RE IELD
SH
Inlet Tube
Clamp Bracket
Top Clamp
Clamp Bracket
Retaining Screws
Transfer Tube
Bottom Clamp
Inlet Connector
Assembly
Clamp Bracket
Clamp Bracket
Retaining Screws
Motor/Pump Assembly - Removal and Installation
34
6. Thermal Switch - Removal and Installation
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
6.1. Unscrew the four cover retaining screws sufficient to remove the cover and
service tunnel.
Note! The cover retaining screws are captive and need not be removed.
6.2. Remove the hose from the outlet connector and loosen the connection to the inlet
connector assembly.
6.3. To improve access to the terminals on top of the tank the terminal block may be
loosened by removing the fixing screw.
6.4. Remove the screws that hold the clamp bracket in position and remove the clamp
bracket.
6.5. Remove the screws that hold the flow valve and switch assembly and the heater
tank in position.
6.6. Carefully pull the flow valve and switch assembly and the heater tank away from
the case.
6.7. Remove the brown and red wires from one side of the thermal switch and the
second brown wire from the other side of the thermal switch.
6.8. Remove the fixing screw and remove the thermal switch and green earth bonding
wire.
Caution!
Do not press printed disc on the replacement thermal switch as this
will make the component unserviceable.
6.9. Refit the components in reverse order. Make sure that the electrical wires are
installed in the correct positions. In particular the green earth bonding wire must
be reconnected above the thermal switch flange.
35
Cistern Fed Cold Water
Supply Pipe
PCB Assembly
Motor/Pump Assembly
Splash Guard Heater Tank
Microswitch
Electrical
Supply Cable
Switch
Assembly
Terminal Block
Flow Valve
Inlet Connector
Assembly
Clamp Bracket
Heater Tank
Retaining Screws
Outlet Connector
Clamp Bracket
Flow Valve and
Retaining Screws
Switch Assembly
Retaining Screw
Thermal Switch - Removal and Installation
36
7. Inlet Filter - Cleaning
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
7.1. Unscrew the four cover retaining screws sufficient to remove the cover and
service tunnel.
Note! The cover retaining screws are captive and need not be removed.
7.2. Hold a wrench across the flats of the inlet connector assembly to prevent damage
to the connector, and unscrew the inlet filter.
7.3. Withdraw the inlet filter. Clean or renew as necessary.
7.4. Refit in reverse order. Ensure that the filter is screwed fully home.
Inlet Filter - Cleaning
37
Section
Spare Parts
13
Mira Elite 2 Spare Parts List
215 12
405 58
406 27
416 38
416 41
416 43
416 48
416 51
416 52
417 33
417 50
417 51
428 55
428 56
428 58
428 59
428 60
428 61
428 62
428 64
428 66
428 67
428 68
872 01
872 28
Thermal Trip Pack
Inlet Connector Assembly
Inlet Filter (with 'O' seal fitted)
Clamp Bracket
Thermal Switch
Splash Guard
Latching Switch
Solenoid Coil Assembly
Outlet Connector
Heater Tank 9.8 kW
FlowValve Assembly
Switch Assembly
Cover Assembly
Cover Seal (not shown)
Component Pack - components identified 'A'
Service Tunnel
Terminal Block Assembly
Transfer/Inlet Tubes
Motor/Pump Assembly
Motor Dust Shield
Screw Pack - components identified 'B'
Connector Assembly
PCB Assembly
Microswitch N/O - 2 pin
Microswitch C/O - 3 pin
Important Note!
Push-fit connectors must be assembled back to back
onto the micro-switch terminals.
A minimum air gap of 4 mm must be maintained
between the connectors after assembly.
4 mm minimum
38
Mira Elite 2 Spare Parts Diagram
A
A
416 41
A
428 68
A
417 33
428 67
416 43
A
B
428 60
r
we
Po
w
Flo
Low
Me
LO
diu
m
Hig
h
W
A
B
Tem
A
pe
ratu
re
B
872 01
Sta
417 51
rt
Sto
p
416 52
215 12 872 28
417 50
428 59
B
NING
V
WAR
230 T
NO
DOMOVE
RE IELD
SH
428 62
428 55
428 64
B
A
428 61
405 58
416 51
416 48
B
416 38
406 27
39
Section
14
Optional Accessories
DCV-H: An outlet double check valve, designed to prevent the backflow or backsiphonage
of potentially contaminated water, through shower controls which are fitted with a
flexible hose as part of the outlet shower fitting. Available as an optional accessory from
your Kohler Mira stockists.
RF2 Fixed handset holder. A simple alternative or additional holder for a shower
handset, available as an optional accessory from your Kohler Mira stockists.
40
Notes
41
Notes
42
Notes
43
Section
Customer Service
Guarantee of Quality
After Sales Service
Mira Showers guarantee products against any defect of
materials or workmanship for one year from the date of
purchase (2 years for Mira Select and 3 years for Mira Excel
ranges).
Our Customer Services Team is comprehensively trained
to provide every assistance you may need: help and
advice, spare parts or a service visit.
To validate the guarantee, please return your completed
registration card.
Within the guarantee period we will resolve defects, free of
charge, by repairing or replacing parts or modules as we may
choose.
We maintain an extensive stock of spares, and aim to have
functional parts available for ten years from the date of
final manufacture of the product.
Spares can be purchased from approved stockists or
merchants (locations on request) or direct from Customer
Services.
Spares direct will normally be despatched within two
working days. Payment can be made by Visa or Access
at the time of ordering. Should payment by cheque be
preferred a pro-forma invoice will be sent.
Note! In the interests of safety, spares requiring exposure
to mains voltages can only be sent to competent persons.
To be free of charge, service work must only be undertaken
by Mira Showers or our approved agents in Northern Ireland
and Republic of Ireland.
Service under this guarantee does not affect the expiry
date. The guarantee on any exchanged parts or product
ends when the normal product guarantee period expires.
Spare Parts
Not covered by this guarantee:
Service
Damage or defects arising from incorrect installation, improper
use or lack of maintenance, including build-up of limescale.
Our Service Force is available to provide a quality service at
a reasonable cost. You will have the assurance of a Mira
trained engineer/agent, genuine Mira spares – and a 12 month
guarantee on the repair.
Damage or defects if the product is taken apart, repaired or
modified by any person not authorised by Mira Showers or our
approved agents.
This guarantee is in addition to your statutory and other
legal rights.
Before using your shower
Please take the time to read and understand the operating
and safety instructions detailed in this manual.
What to do if something goes wrong
If when you first use your shower it doesn’t function correctly,
first contact your installer to check that installation and
commissioning are satisfactory and in accordance with the
instructions in this manual. We are on-hand to offer you or your
installer any advice you may need.
Should this not resolve the difficulty, simply contact our
Customer Services who will give every assistance, and if
necessary arrange for our service engineer to visit.
If later the performance of your shower declines, consult this
manual to see whether simple home maintenance is required.
Please call our Customer Services to talk the difficulty
through, request service under guarantee if applicable, or
take advantage of our comprehensive After-Sales service.
As part of our quality and training programme calls
may be recorded or monitored
Mira Showers
Kohler Mira Ltd
Cromwell Road,
Cheltenham GL52 5EP.
44
P3559/3 (J93 A)
Payment should be made directly to the Service Engineer/
Agent, using Visa, Access or a cheque supported by a
banker’s card.
To contact us:
England, Scotland & Wales
Mira Showers Customer Services
Telephone:
01242 262888
8.30am to 5pm Working days (4.30pm Fri)
8.30 am to 12.30pm Saturday
E-mail: Mira_technical@mirashowers.com
Fax:
01242 282595
By Post:
Cromwell Road
Cheltenham
Gloucester GL52 5EP
For Customers in Northern Ireland
Wm H Leech & Son Ltd
Telephone:
028 9044 9257 – Mon to Fri 9 am-5pm
Fax:
028 9044 9234 – 24 hours
Post:
Maryland Industrial Estate
Ballygowan Road
Moneyreagh, Co Down
BT23 6BL
For Customers in Republic of Ireland
Modern Plant Ltd
Telephone: Dublin 01 4591344 - Mon to Fri 9am to 5pm
Fax:
Dublin 01 4592329 – 24 hours
Post:
Otter House
Naas Road
Clondalkin
Dublin 22
Mira is a registered trade mark of
Kohler Mira Limited.
The company reserves the right to
alter product specifications without
notice.
BS EN ISO 9001 : 1994
Reg. No. FM 14648
© Kohler Mira Limited, April 2003
Download PDF
Similar pages