Mira Select Flex LP-S, Select Flex HP-S User Manual

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For SPARES, ADVICE

or REPAIRS

Please call us on

01685 898110

These instructions must be left with the user

Installation and User Guide

Mira Select Flex

Thermostatic Mixer

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If you experience any difculty with the installation or operation of your new thermostatic

mixer, please refer to ‘Fault Diagnosis’, before contacting Kohler Mira Ltd. Our contact
details can be found on the back cover of this guide.

INTRODUCTION

Important! The tting of any ow regulator will invalidate TMV2 or TMV3 compliance due

to the minimum ow rate requirements. Do not t ow regulators in TMV2 applications.

For Type 2 or Type 3 Valves refer to the TMV2 or TMV3 Requirements Manual.

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 Flex is a thermostatic mixer with separate ow and temperature controls.

The lever controls have been designed to be easily operated by users with restricted hand
movement.

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 lters are tted to protect the

thermostatic cartridge.

On exposed models the thermostatic mixer has adjustable inlets to t pipework centres between
139 mm and 153 mm and is designed for connection to rising, falling or rear entry pipework.

The Mira Select Flex has been certied for use in UK Healthcare premises as a Type 3 valve
under the BUILDCERT TMV3 scheme. The Mira Select Flex has also been certied as a
Type 2 valve under the BUILDCERT TMV2 scheme. For Healthcare* installations refer to
the TMV3 requirements manual. This product also complies with the Water Supply (water
ttings) Regulations 1999.

*Healthcare applications are hospitals, aged person facilities, residential care homes, etc.

and any other application where the user is similarly at risk.

The approved designations for Type 2 and Type 3 products are as follows:

Model Designation

Mira Select Flex LP-S, HP-S

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Application

Valve

Only

Valve with

Fittings

Domestic

ü ü

Light Commercial

ü ü

Heavy Commercial

ü û

Healthcare

ü û

Note! Heavy duty shower ttings are available separately for use in Healthcare and Heavy
Commercial applications, for details contact Customer Services.

For domestic installations, Mira Showers guarantee the Mira Select Flex against any defect
in materials or workmanship for a period of ve years from the date of purchase (shower

ttings for one year).

For non-domestic installations, Mira Showers guarantee the Mira Select Flex against any
defect in materials or workmanship for a period of one year from the date of purchase.

For terms and conditions refer to the back cover of this guide.

GUARANTEE

RECOMMENDED USAGE

Patents:

GB: 2 291 693, 2 392 225, 2 421 297
US: 7 240 850
Euro: 1 672 257 DE, FR, GB, IT, NL, SE

Patent Applications:

GB: 2 435 077, 0712546.1
US US-2006-0124758

US-2007-0221740

Euro: 03254070.0

Design Registration:

000834007/01, 000834007/02,000578463-0006

PATENTS AND DESIGN REGISTRATION

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5. Make sure that you fully understand how to operate this shower before use, read all
operating instructions and retain this guide for future reference.

6. This product is not intended for use by persons (including children) with reduced physical,

sensory or mental capabilities, or lack of experience and knowledge, unless they have
been given supervision or instruction concerning the use of the product by a person
responsible for their safety.

7.

Children should be supervised to ensure that they do not play with the product.

8. DO NOT perform any unspecied modications to the shower or its accessories. When

servicing only use genuine Kohler Mira replacement parts.

9. DO NOT t any form of outlet ow control. Only Mira recommended outlet ttings should

be used.

10. DO NOT operate the temperature control rapidly, allow 10 – 15 seconds for the

temperature to stabilise before use.

11.

Care is required when adjusting ow or temperature, make sure that the temperature

has stabilised.

12.

Care is required if the product is turned off and back on during showering as this may
result in unstable temperature. Ensure temperature has stabilised before re-using product.

13. Sunburn or skin conditions can increase your sensitivity to hot water. Make sure that you
set the shower to a cooler temperature.

14. 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.

15.

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.

SAFETY WARNINGS

WARNING - This product can deliver scalding temperatures if not operated, installed
or maintained in accordance with the instructions, warnings and cautions contained

in this guide.

The function of a thermostatic mixing valve is to deliver water consistently at a safe temperature.
In keeping with every other mechanism, it cannot be considered as functionally infallible and
as such, cannot totally replace a supervisor’s vigilance where that is necessary. Provided it is
installed, commissioned, operated and maintained within manufacturers recommendations,
the risk of failure, if not eliminated, is reduced to the minimum achievable.

Caution!

1.

Read all of these instructions and retain this guide for later use.

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

conducted by designated, qualied and competent personnel.

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.

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Tick the appropriate boxes to familiarise yourself with the part names and to conrm that the

parts are included.

q 1 x Mira Select Flex

Exposed Shower Control

q 1 x ‘O’ Key

q 2 x Olives

q 2 x Compression Nuts

q 2 x Concealing Plates

q 1 x Hexagon Key, 2.5 mm

q 2 x Screws, No 8 x 1 ¼”

q 2 x Wall Plugs

q 2 x Securing Clips

q 2 x Concealing Caps

q 1 x 12 L/Min Flow

Regulator

Documentation

q 1 x Installation Template
q 1 x TMV2 Requirements Manual
q 1 x TMV3 Requirements Manual

PACK CONTENTS

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For Type 2 and Type 3 Valves, the supply conditions specied in the TMV2 and TMV3
Requirements Manual take precedence over the operating parameters which follow.

Pressures

• Max Static Pressure: 10 Bar.

• Max Maintained Pressure: 5 Bar.

• Min Maintained Pressure (Gravity System): 0.1 Bar (0.1 bar = 1 Metre head from cold tank

base to showerhead outlet).

Note! For gravity fed or other low pressure systems (0.5 bar or below) do not t the outlet
ow regulator (where applicable).

• For optimum performance supplies should be nominally equal.

Note! For combination type boilers it may be necessary to t the ow regulator (supplied) to
restrict the ow through the boiler to ensure it produces a sufciently hot water temperature.

Temperatures

• Factory Pre-set (Blend) Shower: 41°C.

• Optimum Thermostatic Control Range: 35°C to 43°C (achieved with supplies of 15°C cold,

65°C hot and nominally equal pressures).

• Recommended Hot Supply: 60°C to 65°C Note! The mixing valve can operate at higher

temperatures for short periods without damage, however this could detrimentally affect
thermostatic performance. For safety and performance reasons it is recommended that

the maximum hot water temperature is limited to 65°C.

• Cold Water Range: up to 25°C.

• Minimum Recommended Differential between Hot Supply and Outlet Temperature: 12°C

at desired ow rate.

Thermostatic Shut-down

• For safety and comfort the thermostat will shut off the mixing valve within 2 Seconds if

either supply fails (achieved only if the blend temperature has a minimum differential of
12°C from either supply temperature).

Connections

• Inlets: 15 mm Compression.

• Outlet: ½” BSP Flat Face (Exposed models), 15 mm Compression (Built-in models)

• Standard connections are: hot - left, cold - right, outlet - bottom (Exposed models),

top (Built-in models).

Flow Regulator Installation

Flow regulators are supplied with this product and should be tted in High Pressure systems to either;

1. Reduce Excessive Force & Flow Rate

2.

Reduce Noise through the mixer due to high or unequal pressures

3. Stabilise incoming supply temperatures

Important! The tting of ow regulators will invalidate any TMV2/3 compliance due to the

minimum ow rate requirements. Do not t the ow regulator in TMV2/3 applications.

SPECIFICATIONS