Kohler Mira Eco Operation manual

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These instructions are to be left with the user
INSTALLATION & USER GUIDE
SHOWER FITTINGS
MIRA ECO

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INTRODUCTION
ThankyouforpurchasingaqualityMiraproduct.To
enjoythe fullpotential ofyour newproduct, please
take time to read this guide thoroughly, having
done so, keep it handy for future reference.
MiraECO adjustableshowerfittingsaredesigned
to give a satisfactory shower over a range
of pressures. These fittings are suitable for
pressures between 0.5 and 5.0 bar and are
available in chrome or white finishes.
General
1. Makesure thattheshowerfittingsareinstalled
by a competent installer.
2. InstallationsmustcomplywithWaterRegulations
(Bye-Laws, Scotland), and any other Local
RegulationsandBuilding Regulations in force
at the time of installation.
3. Before installation carefully inspect the new
fixture for any signs of damage.
4. The shower fittings should be positioned at a
convenient height for all the family. Position
thefittingstosprayacross ratherthentowards
the opening of the cubicle and also away from
the shower control. Avoid layouts where the
shower hose will be sharply kinked. This may
reduce the life of the hose.
5. A hose retaining ring is supplied to prevent
the showerhead from dropping below the spill
over level of the bath or shower, which could
lead to contamination from backsiphonage.
The supplied hose retaining ring should meet
the great majority of user requirements for
showerinstallationswith flexibleoutlet fittings.
However, there will be occasions when the
hose retaining ring will not provide a suitable
solution. In these instances an outlet double
check valve, e.g. the Mira DCV-H, must be
fitted. The inclusion of the Mira DCV-H will
increasethe requiredsupply pressuretypically
by 0.1 bar.
6. Special consideration should be given to the
fixing arrangements when installing onto a
dry lined, stud partition, shower cubicle or
laminatedpanel wallstructures.Installers may
wish to obtain alternative proprietary cavity
fixings, or choose other options, however,
these methods of fixing are beyond the scope
of this guide.
If you experience any difficulty with the
installation or operation of your new shower
fittings, please refer to ‘Fault Diagnosis’,
beforecontactingKohler MiraLtd. Ourcontact
details can be found on the back cover of
this guide.
CONTENTS
Introduction 2
General 2
Pack Contents 3
Pack Contents 4
Specifications 5
Pressures 5
Dimensions 5
Flow Rates 5
Installation 6
RAC Assembly 6
Mira Eco Shower Fittings 8
Operation 9
User Maintenance 10
Fault Diagnosis 10
Cleaning 10
Spare Parts 11
Customer Service 12
Design Registration 3 003 935

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2 x Wall Plugs
1 x Slide Bar
1 x 1.25m Flexible Hose
1 x Showerhead
2 x Hose Seals
1 x Clamp Bracket
1 x Hose Retaining Ring
1 x Applicator
2 x Fixing Screws
2 x Slide Bar End Supports
2 x Slide Bar End Caps
or
1 x 1.75m Flexible Hose
PACK CONTENTS
Tick the appropriate boxes to familiarise yourself
with the part names and to confirm that all of the
parts are included.

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PACK CONTENTS
Tick the appropriate boxes to familiarise yourself
with the part names and to confirm that all of the
parts are included.
Only supplied with Built-In Variable (BIV) fitting.
1 x Wall Plate 2 x Wall Plugs
1 x Olive
2 x Backplate Screws
1 x Backplate Nut
2 x 'O' Seals
1 x Elbow
1 x Shroud
1 x Backplate
2 x Wall Plate Screws

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SPECIFICATIONS
Pressures
Min maintained pressure: 0.5 bar (50 kPa).
Max maintained pressure: 5.0 bar (500 kPa).
Warning! Exceeding the stated maximum
maintained pressure could result in excessive
back pressure and possible damage to the
product.
Dimensions
Flow Rates
These are the typical flow performance graphs
for the Mira Eco shower fittings. There will be
an additional pressure loss through the shower
control.
Pressure loss = Pressure difference between the
inlet and outlet of the fitting.
The graph below shows the water saving made
usingthe MiraEcoshowerheadva standardthree
mode Mira High Capacity Logic showerhead.
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
Pressure (bar)
Flow Rate (l/min)
Start eco / Soothe eco / Force eco modes
Start / Force
Soothe mode Logic
mode Logic
344mm Max.
659 mm

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INSTALLATION
RAC Assembly
The RAC assembly is supplied with built-in mixer
showers only.
1. Before the RAC assembly can be fitted you
must have first installed your built-in shower
control and have connected the inlet and
outlet pipework. Refer to your shower control
installation and user guide.
Important! Makesure thattheoutlet pipework
protrudes through a Ø25 mm hole in the wall
or stud partition by approximately 40 mm.
Note! For stud partition installations where
access to the rear of the partition is possible,
fit the RAC wallplate over the outlet pipework
on the inside of the partition.
For stud partition installations where access
to the rear of the wall is not possible, follow
instructions for solid wall installations, making
surethat suitablewall fixings(notsupplied)are
used to secure the wallplate to the outside of
the stud partition.
40 mm
RAC Wallplate
(shown fitted for rear
access stud partitions only)
Outlet Pipe to Fittings
Thermostatic
Mixing Valve
2. Temporarily cap off the outlet pipe, turn on the
water supplies and check for leaks.
3. Determine the finished wall position (e.g. tile
thickness). Turn off the water supply, carefully
uncap the outlet pipe and cut to length, the
outletpipe mustprotrudethrough thefinished
wall surface by 21–23 mm.
Note! Removeany burrsfrom thepipes before
proceeding.
4. For solid wall installations or stud partition
installations without rear access go to
instruction 9.
For stud partition installations with access
to the rear of the partition continue with
instruction 5.
5. Finish the wall (e.g. tiles).
Important! Refer to your shower control
installation and user guide.
Caution! Make sure that the finished wall
is within the maximum and minimum limits
and to an even depth (no greater than 2 mm
variation).
6. Place the RAC backplate over the outlet pipe
with the arrow pointing up. The screw holes
should be at 45° to the horizontal.
7. Mark the positions of the two RAC backplate
fixing holes and drill the two 5.5 mm holes.
Caution! Make sure that you do not drill into
pipework in the wall.
8. Hold the RAC wallplate in position on the rear
ofthe partition,insert thetwobackplatescrews
andsecure theRACbackplatetothewallplate.
Makesurethatthefoam sealabutsthe finished
wall surface. Go to instruction 17.
RAC Backplate
Backplate
Screws

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16.Place the backplate over the outlet pipe with
thearrowpointing verticallyupand tightenthe
twobackplate screws.Makesurethatthe foam
seal abuts the finished wall surface.
17.Check that the blue ‘O’seal is fitted inside the
backplate nut. Fit the olive and the backplate
nut over the outlet pipe and tighten the nut.
18.Check that the second ‘O’seal (black) is fitted
to the outside of the backplate nut. Press
the elbow onto the backplate, make sure
that the clips on the elbow engage with the
backplate.
19.Press the shroud over the elbow, make
sure that it engages with the lugs on the
backplate.
20.This completes the installation of the RAC
assembly, continue with the installation of the
EV Shower Fittings.
9. Loosely attach the RAC backplate to the RAC
wallplate, using the two backplate screws
provided.
10.Place the RAC backplate/wallplate assembly
over the outlet pipe with the arrow pointing
vertically up. The screw holes should be at
40° to the horizontal.
11.Mark the positions of the two RAC wallplate
fixing holes.
Wallplate
RAC Backplate
Backplate Screws
Arrow
40°
11.Remove the assembly from the wall and
separate the backplate from the wallplate.
12.For solid walls drill two 6 mm holes for the
wall plugs. For other types of wall structure
alternative fixings may be required (not
supplied). If necessary, make a recess 6 mm
deep to accept the wallplate for flush fitting of
the outlet to the wall surface.
Caution! Make sure that you do not drill into
pipework in the wall.
13.Fit the two wall plugs supplied and secure
the wallplate to the wall with the two wallplate
screws.
14.Make sure that there is clearance behind the
wallplate and temporarily fit the two backplate
screws into the wallplate. This will prevent
the fixing holes from becoming blocked with
plaster or grout.
15.Finish the wall, e.g. tiles. then remove the two
backplate screws.
Important! Refer to your shower control
installation and user guide.
Caution! Make sure that the finished wall
is within the maximum and minimum limits
and to an even depth (no greater than 2 mm
variation).
RAC Backplate
Backplate
Screws
Olive
Backplate Nut
Elbow
Shroud

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Mira Eco Shower Fittings
1. Decide on a suitable position for the slide bar
avoiding buried cables and pipes.
2. Important! The slide bar has an applicator
fitted to one end to assist the assembly of
the slide bar through the clamp bracket (see
illustration). With the clamp bracket button
FULLY depressed carefully ease the slide
bar through the hole in the clamp bracket,
take care not to dislodge the constant friction
mechanism or friction pad.
3. Release the clamp bracket button. Remove
the applicator from the slide bar and store in
a safe place for future use.
4. Slide the hose retaining ring onto the slide bar
below the clamp bracket.
5. Make sure that the slots in the slide bar are
aligned with the lugs in the support and fit the
two slide bar supports to the ends of the slide
bar. Make sure that each support is pushed
firmly home.
Note! If replacing an existing Mira Slide Bar
go to instruction 8.
6. Usingthe assembledslidebarandsupportsas
a template, mark the position of the two fixing
holes using the centre slot.
Warning! Make sure that there are no buried
cables or pipes in the wall before drilling.
7. Drill the two 8 mm holes for the fixing
screws and insert the wall plugs supplied.
(Alternatively use proprietary cavity fixings
for dry lined, stud partition, shower cubicle or
laminated panel walls).
8. Fix the bottom slide bar support to the wall
using the screw provided. Make sure that the
screw is fully tightened.
9. Loosely screw the top slide bar support to the
wall. Press firmly down on the top slide bar
support and, while continuing to apply force,
fully tighten the screw.
10.Fit the end caps to the slide bar supports.
11.Pass the flexible hose through the hose
retaining ring.
12.Screw the hose onto the showerhead and the
outlet of the shower control or RAC assembly
(Make sure the hose seals are fitted) Do not
overtighten. Place the shower head into the
clamp bracket.
Clamp Bracket
Constant Friction
Mechanism and
Friction Pad
Applicator
Slide Bar
Wall Plug
Top Slide Bar Support
Fixing Screw
End Cap
Slide Bar
Clamp Bracket
Assembly
Hose Retaining
Ring
Slide Bar
Support Lug
Bottom Slide Bar
Support
End Cap
600

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OPERATION
Changing the Spray Setting
The showerhead spray head has four different
spray actions:- Start, Soothe and Force.
1. Start
Turn the spray plate anticlockwise until it
‘clicks’ (one click from the eco setting). Water
will flow from the outer set of holes.
2. Soothe
Turn the spray plate anticlockwise until it
‘clicks’(twoclicks from theecosetting). Water
will flow from the large diameter holes.
3. Force
Turn the spray plate anticlockwise until it
‘clicks’ (three clicks from the eco setting).
Water will flow from the inner set of holes.
Height and Direction Adjustment
Release Button

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USER MAINTENANCE
If you require a Mira trained service engineer or
agent, refer to section: ‘Customer Services’.
Fault Diagnosis
Symptom:
No flow or low flow rate from shower
• fittings.
Cause / Rectification:
Spray plate blocked, clean or renew.
• Make sure that the hose is not blocked or• twisted.
Head of water below minimum required (Min
• supply pressure 0.5 Bar)
Problemwiththeshowercontrol, refertoyour
• shower control installation and user guide.
—————————————
Symptom:
Drip from the showerhead.
•
Cause / Rectification:
A small amount of water may be retained in
• the showerhead after the shower control has
beenturnedoff.Thisis quitenormal,changing
the angle of the showerhead may vary the
draining time.
Problemwiththeshowercontrol, refertoyour
• shower control installation and user guide.
—————————————
Symptom:
Shower temperature changes when spray
• action is adjusted.
Cause / Rectification:
Adjustingthe sprayaction changesthe flowof
• water. This may affect some shower controls
and plumbing installations. To minimise
the effect make sure that the spray plate is
clean.
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.
Use your thumb or a soft cloth to wipe any
limescale from the soft nozzles and the front
surface of the showerhead spray plate.
Important! The spray plate must be regularly
cleaned to make sure that the showerhead does
not become blocked.
Spray Plate Assembly - Internal
1. Remove the spray plate assembly.
2. Clean all the components with a stiff brush.
If necessary use a plastic kettle descalent
in accordance with the manufacturer's
instructions. Flush thoroughly with water
before the shower is used.
3. If necessary replace the 'O' seals. Refer to
section: Spare Parts.
4. Refit the components in reverse order. Make
surethatthe 'O'sealsand theinnerand outer
nozzle retaining rings are fitted correctly.
Showerhead
Body
Outer Nozzle
Ring Retainer
Inner Nozzle
Ring Retainer
Spray Plate
Assembly
Adjuster Ring
'O' Seals