Mira Shower fittings Operation manual

Installation & User Guide

SHOWER FITTINGS

THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER

MIRA LOGIC

ADJUSTABLE RANGE

Contents

Page

Introduction ................................................................... 3

Important Safety Information.................................................... 4

Pack Contents Checklist .......................................................... 5

Dimensions ................................................................... 7

Specifications ............................................................................ 8

Installation Requirements......................................................... 9

Installation

Mira Logic ev - Exposed Variable Shower Fittings ........... 10

Mira Logic biv - Built-in Variable Shower Fittings ............. 16

Mira Logic bir - Built-in Rigid Shower Fittings ................... 18

Operation ................................................................................. 23

Fault Diagnosis ....................................................................... 25

Maintenance ............................................................................ 26

Spare Parts .............................................................................. 28

Accessories ............................................................................. 31

Guarantee, Customer Care Policy, and How to contact us

.............................................................................. Back cover

Introduction

Mira Logic Adjustable Shower Fittings

If you experience any difficulty with the installation or operation of your new

shower fittings, then please refer to "Fault Diagnosis", before contacting Kohler

Mira Limited. Our telephone and fax numbers can be found on the back cover of

this guide.

Thank you for purchasing a quality Mira product. To enjoy the full potential of your new

product, please take the time to read this guide thoroughly, having done so, keep it

handy for future reference.

This Installation and User guide covers the following products:

Mira Logic Exposed Variable Shower Fittings (ev)

An adjustable spray handset with four different spray actions (start, soothe, force and

eco*), supplied complete with flexible hose, clamp bracket assembly, slide bar,

supports, hose retaining ring/gel holder and wall mounted soap dish. Available in

chrome, satin chrome and white/gold finish.

Mira Logic Built-in Variable Shower Fittings (biv)

Offering the same features as the Logic ev but also includes a right angle connector

(RAC). Suitable for connection to concealed pipework supplies. Available in chrome,

white, satin/chrome and gold finish.

Mira Logic Built-in Rigid Shower Fittings (bir)

An adjustable spray built-in shower head with four different spray actions (start, soothe,

force and eco*). Suitable for connection to concealed pipework supplies only.

Available in white and chrome finish.

* The eco setting reduces the water flow to give economical use of water, whilst still

giving an adequate shower performance. This setting performs best with most

gravity, pumped, and mains pressure unvented systems. On electric showers and

some combination boiler systems the economy setting will have no effect, and will

give the same spray action as the start setting.

Section

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.

Caution!

1. Read all of these instructions.

2. Retain this guide for later use.

3. Pass on this guide in the event of change of ownership of the installation site.

4. Follow all warnings, cautions and instructions contained in this guide.

5. The plumbing installation must comply with the requirements of UK Water Supply

Regulations/Bye-laws(Scotland),BuildingRegulationsoranyparticularregulations

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:

5.1. Institute of Plumbing (IOP), throughout the UK.

5.2. National Association of Plumbing, Heating and Mechanical Services

Contractors (NAPH & MSC), England and Wales.

5.3. Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),

Scotland and Northern Ireland.

6. 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.

7. When this product 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.

❏❏

❏Tick the appropriate boxes to familiarize yourself with the part names and to

confirm that the parts are included.

Documentation

1 x Installation and User Guide ❏

1 x Guarantee Card ❏

✔

Pack Contents Checklist

Mira Logic ev & biv Shower Fittings Pack

1 x Soap Dish ❏

4 x Fixing Screws ❏

4 x Wall Plugs ❏

1 x Handset ❏

2 x Hose Seals ❏

2 x Slide Bar

End Caps ❏

1 x RAC Shroud

(biv only) ❏

1 x Clamp Bracket

Assembly ❏

2 x Slide Bar

End Supports ❏

1 x Slide Bar ❏

Clamp Bracket

Release Button

1 x Hose

Retaining

Ring

❏

2 x Soap Dish ❏

Wall Plugs

2 x Soap Dish

Fixing Screws ❏

1 x Soap Dish

Wall Bracket ❏

1 x 1.25 m

Flexible Hose ❏

❏

1 x RAC Mounting

Pack (biv only) ❏

Mira Logic bir Shower Fittings Pack

❏

1 x Bottom Cover

4 x Screws ❏

1 x Top Cover

❏

2 x Screws

❏

1 x Compression

Olive

Documentation

1 x Installation and User Guide ❏

1 x Guarantee Card ❏

1 x Back Plate ❏

1 x Mounting Plate ❏

❏

1 x Backplate Nut

❏

1 x Built-in Rigid

Assembly (bir)

1 x Seal ❏

❏

4 x Screws

Dimensions

Mira Logic ev and biv

Mira Logic bir

20°

20°20°

109 mm

156 mm

212 mm maximum

354 mm Max.

50°

659 mm

Specifications

Minimum maintained pressure: 6 kPa (0.06 bar).

Maximum maintained pressure: 500 kPa (5.0 bar).

Warning! Exceeding the stated maximum maintained pressure could result in

excessive spray forces and possible damage to the handset.

Pressure loss = Pressure difference between the inlet and outlet of the fitting.

Mira Logic adjustable range flow rates - Low capacity nozzle rings fitted

Mira Logic adjustable range flow rates - High capacity nozzle rings fitted

Pressure loss = Pressure difference between the inlet and outlet of the fitting.

0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

Pressure Loss (bar)

Flow Rate (litres/minute)

Start

Eco

Force Soothe

0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

Flow Rate (litres/minute)

Force

Start

Soothe

Eco

Pressure Loss (bar)

Installation Requirements

Installation must be carried out in accordance with these instructions, and

must be conducted by designated, qualified and competent personnel.

1. The hose retaining ring supplied must be used to stop the handset from dropping

below the spill-over level of the bath or shower tray. This will prevent water

contamination due to backsiphonage.

2. Installations must comply with UK Water Regulations/ Bye-laws (Scotland),

and Building and Plumbing Regulations in force at the time of installation.

3. When installing the shower fittings in a cubicle, position with the spray pointing

across rather than toward the opening of the cubicle.

4. When installing the shower fittings over a bath, position with the spray pointing

down the centre line of the bath.

5. Avoid layouts where the shower hose will be sharply kinked. This may reduce

the life of the hose.

6. Do not fit any form of flow control in the shower outlet.

7. Do not use excessive force when making connections.

8. Do not install the fittings in a position where it could become frozen.

9. The minimum pressure required for a satisfactory spray pattern to form, at the

handset or spray head, is 0.06 bar. For a gravity fed shower installation the

minimum head of water required, to accommodate the pressure loss in the pipes

and shower control of a typical installation, is 1.0 metre.

For a pump installation the minimum acceptable vertical distance between the

base of the cold water storage cistern and the shower head to operate the pump’s

flow switches, is typically 0.6 m (600 mm).

High and Low Capacity Nozzle Rings

1. All shower fittings are supplied with low capacity nozzle rings fitted as standard

to the handset or shower head. High capacity nozzle rings, with larger spray

holes, are also included in the fittings pack.

The low capacity nozzle rings will be suitable for most shower installations.

However for high pressure installations the spray force may be too powerful for

comfortable showering. In such situations it is recommended the high capacity

nozzle rings are fitted. Refer to Maintenance: 2. Spray plate assembly -

removal and installation for removal and fitting instructions.

2. For gas water heaters which require a higher flow rate to operate correctly, it is

recommended the high capacity nozzle rings are fitted.

25 mm Minimum

Spill-over level

Hose Retaining Ring

Slide Bar and Clamp Bracket - New Installation

Mira Logic ev - Exposed Variable Shower Fittings

Read the section “Installation Requirements” first (Page 9).

The slide bar should be positioned to one side of the shower control at a convenient

height for all the family. It should be positioned so the handset discharges down the

centre line of the bath, or across the opening of the shower cubicle. The handset should

be directed away from the shower control.

Note! Special consideration should be given to the fixing arrangements when installing

on to dry lined, stud partition, shower cubicle or laminated panel wall structures.

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.

Important! If the Logic slide bar replaces an existing Mira slide bar follow the

instructions "Slide Bar and Clamp Bracket - Replacing an Existing Mira Slide

Bar Installation" on Page 12, otherwise follow the instructions "Slide Bar and

Clamp Bracket - New Installation" below.

Clamp Bracket

Button

Button Recess

1. Decide on a suitable location for the

slide bar avoiding buried cables and

pipes. The position of the shower

control and the shower fittings must

provide a minimum gap of 25 mm

between the spill-over level and the

handset. This is to prevent

backsiphonage. Alternatively the Mira

outlet double check valve (DCV-H)

can be fitted. This is available as an

accessory.

Note! Toavoid damage during transit,

the clamp bracket button and clamp

bracket have been supplied

separately.

2. Removethewarninglabelintheclamp

bracket button recess and fit the

clamp bracket button to the clamp

bracket as shown. The button will fit

only one way.

Installation

3. 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

the friction pad. Release the clamp

bracket button.

4. Slide the hose retaining ring onto the

slide bar below the clamp bracket.

5. Ensure 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. Ensure each

support is pushed firmly home.

6. Using the assembled slide bar and

supports as a template mark the

position of each of the of the four

fixing holes at a point in the middle of

each vertical slot.

Warning! Ensure there are no buried

cables or pipes in the wall before

drilling.

7. Drill the 8 mm holes for the four fixing

screws and insert the wall plugs

supplied.(Alternativelyuseproprietary

cavity fixings for dry lined, stud

partition, shower cubicle or laminated

panel walls).

8. Secure the bottom slide bar support

to the wall using the screws provided.

Ensure the screws are 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 screws.

10. Fit the end caps to the slide bar

supports.

11. Check the slide bar can not be rotated

or vertically moved. If there is

movement remove the slide bar

assembly from the wall. Check the

slide bar support lugs are properly

End Cap

Clamp

Bracket

Assembly

End Cap

Wall Plugs

Top Slide Bar

Support

Slide Bar

Clamp

Bracket

Assembly

600 mm

27 mm

Wall Plugs

Fixing Screws

27 mm

Hose

Retaining

Ring

Caution! Do not overtighten the hose.

1. Screw the hose onto the outlet of the

shower control (Make sure the hose

washer is fitted).

Note! If necessary a 9 litre/minute

flow regulator can be fitted under the

hose washer. The flow regulator is

available as an accessory.

2. Pass the flexible hose through the

hose retaining ring and screw the

remaining end of the hose onto the

handset (Make sure the hose washer

is fitted).

3. Placethe handset in the clamp bracket

assembly.

Handset Installation

12. Check the slide bar can not be rotated

or vertically moved. If there is

movement remove the slide bar

assembly from the wall. Check the

slide bar support lugs are properly

engaged with the slots in the slide bar

andthe supports are pushed fully on to

the slide bar ends. Refit the slide bar

assembly by repeating instructions 9.

to 11.

13. Follow the instructions in "Handset

Installation" and "Soap Dish

Installation" below to complete the

fittings installation.

Flow

Regulator

Handset

Hose

Washer

Clamp

Bracket

Assembly

Hose

Retaining

Ring

Soap Dish Installation

Wall Bracket

Soap Dish

35 mm

Wall Plug

Fixing Screw

Note! For dry lined, stud partition, shower cubicle or laminated panel walls the installer

may wish to obtain alternative proprietary cavity fixings. Use of these alternative fixings

is beyond the scope of this guide.

1. Decide on a suitable position for the

soap dish, avoiding any buried cables

and pipes.

2. Place the wall bracket on the wall and

mark the position of the fixing holes.

Warning! Ensure there are no buried

pipes or cables in the wall before

drilling.

3. Drill the two 8.0 mm fixing holes for

the soap dish at 35 mm centres, and

insert the wall plugs supplied.

4. Screw the wall bracket to the wall.

5. Clip the soap dish onto the wall

bracket.

6. This completes the installation of the

Mira Logic ev shower fittings.

Mira Logic biv - Built-in Variable Shower Fittings

Read the section “Installation Requirements”first (Page 9).

Note! Special consideration should be given to the fixing arrangements when installing

on to dry lined, stud partition, shower cubicle or laminated panel wall structures.

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.

The right angled connector assembly (RAC) should be positioned above and offset from

the top outlet of the shower control. This will prevent the flexible hose from obstructing

the temperature and flow control knobs of the shower control. The pipework between

the shower control and the backplate nut is not supplied as part of the shower fitting.

Shower Control

Outlet Pipe (15mm)

Hot Inlet Cold Inlet

1. The end of the 15 mm pipework from

the outlet of the shower control must

protrude through the finished wall

surface by at least 20mm.

2. Thecopperpipemustprotrudethrough

the wall between 20 - 22mm from the

finished surface of the wall. If the pipe

protrudes further than 22mm it will

prevent the backplate nut from

engaging with the backplate. If

necessary cut the pipe to the correct

length and remove any burrs.

3. Place the backplate over the copper

pipe and mark the positions of the two

fixing holes. Drill the two 6mm fixing

holes for the backplate and fit the two

wall plugs supplied. (Alternatively use

proprietary cavity fixings for dry lined,

stud partition, shower cubicle or

laminated panel walls).

15 mm Copper

Pipe

20 to 22 mm

2 x Fixing

Screws

Foam Seal

Backplate

Copper Pipe

Backplate

Backplate Nut

RAC Elbow

RAC Shroud

Important! Ensure the recessed

pipework is vertical and the arrow on

the backplate is in an upright position.

4. Make sure that the foam seal abuts

the finished wall surface, place the

backplate against the foam seal and

using the two screws supplied fix the

backplate to the wall.

5. Fit the compression olive and the

backplate nut over the copper pipe

and tighten the nut into position. Flats

are provided on the backplate nut to

take a 24mm A/F spanner.

6. Ensure the 'O' seal is fitted to the

backplate nut. Ensure the clips on

the elbow are fully engaged with the

backplate

7. Locate the RAC shroud over the RAC

elbow. Carefully push the shroud until

it engages with the lugs on the

backplate.

8. To complete the installation fit the

slide bar, handset and soap dish.

Follow the installation instructions in

"Mira Logic ev - Exposed Variable

Shower Fittings" (Page 10).

'O' Seal

15 mm Copper

Pipe

Foam Seal

Backplate

Nut

Compression

Olive

Mira Logic bir - Built-in Rigid Shower Fittings

Solid and dry-lined wall Installation

Read the section “Installation Requirements”first (Page 9).

The bir spray head should be positioned at a convenient height for all the family. It

should be positioned so that it discharges down the centre line of the bath, or across

the opening of the shower cubicle and it should be directed away from the shower

control.

1. Fit recessed 15 mm copper pipe from

the shower control and ensure the

pipe will protrude from the finished

wall surface by at least 23mm.

2. Loosely screw the backplate to the

mounting plate with the two screws

provided.

3. Place the mounting plate and

backplate over the copper pipe.

Important! Ensure the recessed

pipework is vertical.

4. Fit and tighten the backplate nut

sufficiently to hold the assembly

against the wall.

5. Mark the position of the mounting

plate and its fixing holes on the wall

surface.

6. Remove the backplate nut,

compression olive and the backplate/

mounting plate assembly. Remove

the screws and the wallplate from the

mounting plate.

Mounting

Plate

Screws

Backplate

Mounting Plate

Backplate

Backplate Nut

Thepipeworkbetweenthe shower control

and the backplate nut is not supplied as

part of the shower fitting.

15 mm Copper

Pipe

23 to 25 mm

10. Finish the surface of the wall as

required.

11. Thecopper pipe mustprotrudethrough

the wall between 23 - 25mm from the

finished surface of the wall. If the pipe

protrudes further than 25mm it will

prevent the backplate nut from

engaging with the backplate. If

necessary cut the pipe to the correct

length and remove any burrs.

7. Drill the four mounting plate fixing

holes. If necessary, make a recess

approximately 6 mm deep to accept

the mounting plate. Fit the four wall

plugs supplied to the fixing holes.

8. Fix the mounting plate to the wall with

four screws (not supplied). The two

threaded holes must be horizontal.

9. Temporarily fit the two backplate

fixing screws into the mounting plate.

This will prevent the fixing holes from

becoming blocked with plaster or

grout.

Mounting Plate

Threaded

Holes

6.0 mm

Mounting Plate

Temporarily fit the

two backplate

fixing screws to

prevent holes

becoming blocked

with grout.

23 to 25 mm

15 mm

Copper Pipe

bir Assembly

Wallplate

4 x Fixing Screws

'O' Seal

12. Fix the backplate to the wall using the

two fixing screws.

13. Fit the compression olive over the

copper pipe and tighten the backplate

nut into position. Flats are provided

on the wallplate and backplate nut for

a 24 mm A/F spanner.

14. Ensure the 'O' seal is fitted on the

backplate nut. Push the bir assembly

over the backplate nut onto the

wallplate.

15. Fix the bir assembly to the wall plate

using the four screws provided.

Note! If necessary a 9 litre/minute

flow regulator can be fitted with an

adaptor in the internal waterway of

the bir assembly. The flow regulator

and adaptor are available as

accessories.

Fixing Screws

Compression

Olive

Backplate

Backplate Nut

bir Assembly

Internal Waterway

Flow Regulator

and Adaptor

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