Mira SELECT Manuel utilisateur

MIRA SELECT

Installation and User Guide

THERMOSTATIC MIXER

These instructions must be left with the user.

CONTENTS

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

Patents and Design Registration..........................................................3

Safety : Warnings....................................................................................4

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

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

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

Installation Requirements ....................................................................10

Installation .............................................................................................12

General............................................................................................... 12

Installation Methods ...........................................................................13

Exposed Thermostatic Mixer..............................................................14

1. Rear Entry Supplies (rising or falling concealed pipework)........ 14

2. Rising or Falling Supplies...........................................................16

Built-in Thermostatic Mixer................................................................. 18

1. Solid Wall or Stud Partition

(Using Securing Brackets - Mounting off Front Face of Wall) 18

2. Solid Wall or Stud Partition

(Using Rear Fixing Points on the Thermostatic Mixer)........... 22

3. Laminated Panel

(Using Securing Brackets - Mounting on Rear Face of Wall).24

Control Assembly (Built-in Model) ......................................................27

Reversed Inlet Supplies........................................................................28

Commissioning .....................................................................................30

Operation ...............................................................................................31

Fault Diagnosis......................................................................................32

Maintenance...........................................................................................33

Type 2 Valves.........................................................................................37

Spare Parts ............................................................................................38

Customer Service....................................................................Back Page

INTRODUCTION

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

Thermostatic Mixer, please refer to ‘Fault Diagnosis’, before contacting Kohler Mira

Ltd. Our telephone and fax numbers can be found on the back cover of this guide.

Patents and Design Registration

Design Registration: 000578463-0004, 000578463-0005, 00578463-0006.

Patents: GB: 2 291 693, 2 392 225, 2 421 297.

Patent Applications: GB: 0512457.3.

Euro: 1 672 257, 03254070.0.

Thank you for purchasing a quality Mira product. To enjoy 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 Select Thermostatic Mixer is a thermostatic Shower Control with separate

ﬂow and temperature controls.

The Thermostatic Mixer incorporates a wax capsule temperature sensing unit, which

provides an almost immediate response to changes of temperature of the incoming

water supplies to maintain the selected showering temperature. An adjustable

temperature stop is provided which limits the maximum temperature to a safe level.

Inlet Filters are ﬁtted to protect the thermostatic cartridge.

Mira Select Exposed: Thermostatic Mixer for connection to rising, falling or rear

entry pipework.

Mira Select Built-in: Thermostatic Mixer for connection to concealed pipework.

Includes Right Angle Connector (RAC) for connecting concealed pipework to exposed

shower ﬁttings.

This product has been certified as a Type 2 valve under the BUILDCERT

TMV2 scheme. This product also complies with the water supply (water ﬁttings)

regulations 1999.

Optimum performance of the Mira Select is achieved when used together with the

Mira Select Shower Fittings.

SAFETY : WARNINGS

This Mira Select Thermostatic Mixer is precision engineered and should give

continued safe and controlled performance, provided:

1. It is installed, commissioned, operated and maintained in accordance with the

manufacturer’s recommendations.

2. Periodic attention is given, when necessary, to maintain the product in good

functional order.

Caution!

1. Read all 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. 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.

6. When this product has reached the end of its serviceable life, it should be

disposed of in a safe manner and in accordance with the current local authority

recycling or waste disposal policy.

PACK CONTENTS

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

conﬁrm that the parts are included.

1 x Mira Select Shower Control

1 x “O” Key

2 x Olives

2 x Compression

Nuts

2 x Concealing

Plates

1 x Hexagon Key,

2.5 mm

2 x Screws,

No 8 x 1 ¼”

2 x Wall Plugs

Documentation

1 x Installation and User Guide

1 x Installation Template

1 x Flow Regulator,

12 L/Min

Exposed Select Thermostatic Mixer

Built-in Select Thermostatic Mixer

Documentation

1 x Installation and User Guide

1 x Hexagon Key,

2.5 mm

2 x Screws,

No 8 x 1 ¼”

2 x Wall Plugs 1 x Flow Regulator,

12 L/Min

3 x Olives3 x Compression

Nuts

1 x Mira Select Shower Control

(attached to the Building-in Shroud)

1 x Control Assembly

2 x Screws,

M5 x 40 mm

2 x Securing

Brackets

1 x “O” Key

2 x Bracket Screws 1 x Right Angle Connector

Assembly (RAC)

DIMENSIONS

149 - 154

134

Ø71

Ø56

114

67 - 85

Building-in Depth

71 Ø183

All dimensions are in mm.

Exposed Select Thermostatic Mixer

Built-in Select Thermostatic Mixer

SPECIFICATIONS

Operating Parameters

For Type 2 valves, the supply conditions speciﬁed in section: “Type 2 Valves -

Application” take precedence over the operating parameters which follow.

Pressures

Maximum Static Pressure: 10 bar.

Maximum Maintained Pressure: 5 bar.

Minimum Maintained Pressure (Gas Water Heater): 1.0 bar.

Minimum Maintained Pressure (Gravity System): 0.1 bar.

(0.1 bar = 1 metre head from the base of the cold tank to the outlet of the shower

handset.)

Note! For optimum performance the inlet pressures should be nominally equal and

should not exceed 3:1, in favour of either supply, during ﬂow.

Temperatures

Factory Preset Shower Blend Temperature: 43 °C.

Optimum Thermostatic Control Range: 35 °C - 45 °C.

(Achieved with supplies of 15 °C cold, 65 °C hot and nominally equal pressures.)

Maximum Hot Supply: 85 °C.

Recommended Hot Supply: 60 °C - 65 °C.

Minimum differential between Hot Supply and set Blend Temperature: 10 °C.

Cold Water Range: 1 °C - 20 °C.

Note! BS:6700 recommends that the temperature of stored hot water should never

exceed 65 °C. A temperature of 60 °C is considered sufﬁcient to meet all normal

requirements and will minimise the build up of scale in hard water areas.

Connections

Exposed Mixer:

Inlets: 15 mm Compression, Hot - Left, Cold - Right.

Outlet: ½” BSP Flat Face, Bottom - Outlet.

Built-in Mixer:

Inlets: 15 mm Compression, Hot - Left, Cold - Right.

Outlet: 15 mm Compression, Top - Outlet.

If reversed inlets are required refer to section: “Reversed Inlet Supplies.”

Thermostatic Shut-down

For safety, the thermostat will shut off the Hot Supply within 2 Seconds if the Cold

Supply Fails. (Achieved only if the hot supply temperature is greater than 10°C above

the set blend temperature.)

Flow Rates

Typical Flow Rates on Low Pressure Systems (0.1 bar to 1 bar) - Mira Select with

Mira Select Adjustable Fittings or Rigid Head:

Typical Flow Rates on High Pressure Systems (1 bar to 5 bar, with 12 Litre/Min. Flow

Regulator ﬁtted in shower control outlet) - Mira Select with Mira Select Adjustable

Fittings or Rigid Head:

Supply Pressure (bar)

INSTALLATION REQUIREMENTS

Isolating Valve

Thermostatic Mixer

Overﬂow Indicator

Pressure Reducing Valve

Float Valve Twin Impeller Pump

Single Impeller Pump

Tempering Valve

Mini Expansion Vessel

Key to Symbols

The Mira Select Thermostatic Mixer is compatible with the following systems:

Gravity fed system

The Shower Control MUST be fed from a

cold water cistern and hot water cylinder

providing nominally equal pressures.

Gas heated system

The Shower Control MUST be installed

with a gas water heater or combination

boiler of a fully modulating design.

Note! We recommend the use of a

12 L/Min. Outlet Flow Regulator (supplied).

However, it is possible following the

installation of the Flow Regulator that the

ﬂow rate is reduced too much for the boiler

to ignite. If this is the case remove the Flow

Regulator.

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