Mira Atom, Atom EV User Manual

1

INSTALLATION & USER GUIDE

These instructions must be left with the user.

THERMOSTATIC BAR VALVE

MIRA ATOM EV

2

INTRODUCTION

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 Atom thermostatic bar valve is a
thermostatic shower control designed for wall
mount installations.

The thermostatic bar valve has two knobs, one

knob controls the ow and the other knob controls

the temperature.
The Mira Atom EV is supplied complete with Mira

L14A Shower Fittings.
The thermostatic bar valve incorporates a wax

capsule temperature sensing unit, which provides
an almost immediate response to changes in
pressures or temperature of the incoming water
supplies, to maintain the selected temperature. An
adjustable maximum temperature stop is provided
which limits the temperature to a safe level.

Inlet lters are tted to protect the thermostatic

cartridge.

Guarantee

For domestic installations, Mira Showers
guarantee the Mira Atom against any defect in
materials or workmanship for a period of three

years from the date of purchase (shower ttings

for one year).
For non-domestic installations, Mira Showers

guarantee the Mira Atom 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.

Recommended Usage

Application

Valve with

Fittings

Domestic

ü

Light Commercial

ü

Heavy Commercial

û

Healthcare

û

Design Registration

000793401-0001-0003

CONTENTS

Introduction 2

Guarantee 2

Recommended Usage 2

Design Registration 2

Safety Warnings 3

Pack Contents 3

Specications 4

Pressures 4

Temperatures 4

Thermostatic Shut-down 4

Connections 4

Dimensions 4

Installation 5

Suitable Plumbing Systems 5

General 5

Installing the Thermostatic Mixer 6

Commissioning 7

Maximum Temperature Setting 7

Operation 8

Adjusting the Temperature 8

Adjusting the Flow 8

User Maintenance 8

Fault Diagnosis 8

Lubricants 9

Cleaning 9

Filters 9

Maintaining the Non-Return Valves 9

Spare Parts 10

Notes 11

Customer Service Back Page

If you experience any difficulty with the
ins tallati on o r op era tion 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.

3

SAFETY WARNINGS

Mira thermostatic mixers are precision engineered
and should give continued safe and controlled
performance, provided:

1. They are 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 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. Anyone who may have difculty understanding

or operating the controls of any shower should
be attended whilst showering. Particular
consideration should be given to the young,

the elderly, the inrm or anyone inexperienced

in the correct operation of the controls.

6. Rapid/Excessive movement of the ow and/

or temperature control levers may result in
momentary unstable blend temperatures.

7. Care is required when adjusting flow or
temperature, make sure that the temperature
has stabilised.

8. 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.

PACK CONTENTS

Tick the appropriate boxes to familiarise yourself

with the part names and to conrm that all of the

parts are included.

q 2 x Concealing Plates

q 2 x Inlet Connectors

q 2 x Washers / Filters

Documentation

q 1 x Guarantee Registration Document

q 1 x Mira Atom

4

SPECIFICATIONS

Pressures

Max Static Pressure: • 10 Bar.
Max Maintained Pressure: • 5 Bar.
Min Maintained Pressure: (Gas Water Heater): •

1.0 Bar (for optimum performance supplies
should be nominally equal).

Min Maintained Pressure (Gravity System): •

0.1 Bar (0.1 bar = 1 Metre head from cold tank
base to showerhead outlet).

Temperatures

Close temperature control is provided between •

20°C and 50°C.

Optimum Thermostatic Control Range: • 35°C

to 45°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
temperatures up to 85°C for short periods
without damage. However for safety reasons
it is recommended that the maximum hot water
temperature is limited to 65°C).

Minimum Differential between Hot Supply and •

Outlet Temperature: 10°C.

Cold Water Range: • 5°C - 25°C.

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).

Connections

Hot: Left • (side nearest ow control), ½” BSP

Male.

Cold: Right • (s ide nearest temper ature

control), ½” BSP Male.

Outlet:• bottom, ½” BSP Male to flexible

hose.

Note! This product does not allow for reversed
inlets and will deliver unstable temperatures if

tted incorrectly.

Offset connector (inlet centres are 150 mm
± 24 mm).

½" BSP

Connection to Pipework

¾" BSP

Connection to Bar Valve

Dimensions

150 ± 24 100 Min to Wall100 Min to Wall

Ø70

Dimensions in mm