Bosch Worcester Greenstar 24 Bedienungsanleitung

UK/IE

USER INSTRUCTIONS

WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER

GREENSTAR 24/28/30

6720801019-00.1Wo

FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED

DOMESTIC HOT WATER

6 720 811 923 (2014/07) UK

Preface

6 720 811 923 (2014/07)

PREFACE

PLEASE READ THESE INSTRUCTIONS CAREFULLY

These instructions are applicable to the Worcester, Bosch Group boiler model stated

on the front cover only.

These instructions apply in the UK/IE only and must be followed except for any

statutory obligation.

After installation please leave this User instruction Manual, Installation,

Commissioning and Servicing Instructions and completed Benchmark Checklist with

the user.

DEDICATED TO HEATING COMFORT

Thank you for purchasing a Greenstar gas-fired condensing combination boiler

manufactured by Worcester, Bosch Group. The company prides itself on

manufacturing boilers to the strictest quality control standards throughout every

stage of production.

Worcester, Bosch grouphas led the field in innovative boiler design and performance

for over 50 years. This heritage means all our products are of exceptional quality and

proven reliability.

The Greenstar range in particular is extremely energy efficient, offering you

economical running costs and value for money. It sits in SEDBUK Band A, and is

therefore amongst the top energy rated boilers available.

There is also the reassurance of ourno-nonsense 2 years parts and labour guarantee

- backed up by Worcester Total Cover, an optional complete maintenance scheme to

keep your boiler operating at peak condition and efficiency.

Contents

6 720 811 923 (2014/07)

CONTENTS

1 Symbols and safety precautions . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Opening the control panel cover . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Overview of controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.1 Switching the appliance on/off . . . . . . . . . . . . . . . . . . . 10

5.2 Switching on the central heating . . . . . . . . . . . . . . . . . . 11

5.3 System controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.4 Setting hot water temperature . . . . . . . . . . . . . . . . . . . 13

5.5 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.6 Button lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.7 Boiler reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.8 Display codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.9 Extreme cold weather . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Contents

6 720 811 923 (2014/07)

6 System Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.1 Sealed heating systems . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2 External filling loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7 Fault or Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

9 Tips on energy saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10 Your guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

11 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

12 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

13 Quick reference guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Symbols and safety precautions

6 720 811 923 (2014/07)

1SYMBOLSANDSAFETY PRECAUTIONS

1.1 EXPLANATION OF SYMBOLS

WARNING SYMBOLS

Signal words indicate the seriousness of the hazard in terms of the consequences of

not following the safety instructions.

•NOTICE indicates possible damage to property or equipment, but where there is

no risk of injury.

•CAUTION indicates possible injury.

•WARNING indicates possible severe injury.

•DANGER indicates possible risk to life.

IMPORTANT INFORMATION

ADDITIONAL SYMBOLS

Safety instructions in this document are framed and identified by

a warning triangle which is printed on a grey background.

Notes contain important information in cases where there is no

risk of personal injury or material losses and are identified by the

symbol shown on the left. They are bordered by horizontal lines

above and below the text.

Symbol Meaning

▶ a step in an action sequence

a reference to a related part in the document or to other related

documents

• a list entry

– a list entry (second level)

Symbols and safety precautions

6 720 811 923 (2014/07)

1.2 SAFETY PRECAUTIONS

IF YOU SMELL GAS!

A gas leak could potentially cause an explosion.

If you smell gas, observe the following rules.

▶ Prevent flames or sparks:

– Do not smoke, use a lighter or strike matches.

– Do not operate any electrical switches or unplug any equipment.

– Do not use the telephone or ring doorbells.

▶ Turn off the gas at the meter.

▶ Open windows and doors.

▶ Leave the building and warn your neighbours.

▶ Prevent anyone from entering the building.

▶ Well away from the building: call the National Gas Emergency Service on 0800

111 999.

BOILER OPERATION:

This boiler must only be operated by a responsible adult who has been instructed in,

understands and is aware of the boiler's operating conditions and effects.

COMBUSTIBLE AND CORROSIVE MATERIALS:

Chemically aggressive substances can corrode the boiler and invalidate any

guarantee.

• Do not store or use any combustible materials (paper, thinners, paints,

propellants, cleaning agents etc.) inside or within the vicinity of the appliance.

FITTINGS AND MODIFICATIONS:

Only a competent engineer can remove the boiler case and carry out any work, in

accordance with the Gas Safety (Installation and Use) Regulations.

•Donotremovetheboilercase.

Any misuse or unauthorised modifications to the boiler, flue or associated

accessories and heating system will invalidate the guarantee.

• Do not modify the boiler or flue system in any way.

Worcester, Bosch Group accepts no liability arising from any such actions. This does

not affect your statutory rights.

General information

6 720 811 923 (2014/07)

2 GENERAL INFORMATION

SERVICING

• The boiler must be serviced regularly by a competent, qualified person, such as

a Worcester service engineer or other Gas Safe registered engineer.

• Always use original spares, to help maintain the efficiency, safety and reliability

of the boiler and have the Service Record completed in the Benchmark Checklist.

The completed Benchmark Checklist will be required in the event of any guarantee

work and may be required by the local Building Control Inspector.

BENCHMARK STANDARD

The Benchmark initiative is a code of practice to

encourage the correct installation, commissioning and

servicing of domestic central heating boilers and

system equipment.

A “checklist” is dispatched with every boiler. This is a vital document that needs to be

completed by the installer at the time of installation. It confirms that the boiler has

been installed and commissioned according to the manufacturer's instructions.

The log book provides space for the recording of regular servicing of the boiler/

heating system and this can become a valuable document when, for example, you

wish to sell the property. The log book will show a potential purchaser that the

heating system has received regular professional maintenance and servicing during

its lifetime.

The Benchmark initiative aims to:

• Raise standards among professional installers

• Build and maintain high safety standards in the industry

• Improve customer satisfaction levels

• Make a contribution to the nation's commitment to climate change

Ensure that the service engineer completes the Service Record in

the Benchmark Checklist after each service. The Benchmark

Checklist and service interval record can be found at the rear of

the Installation, Commissioning and Servicing Instructions.

Opening the control panel cover

6 720 811 923 (2014/07)

3 OPENING THE CONTROL PANEL COVER

Fig. 1

▶ To unlatch the flap, push and release at the point indicated.

▶ To close and secure the flap, swing up and push in once to latch.

6 720 612 660-01.2R

Overview of controls

6 720 811 923 (2014/07)

4OVERVIEWOFCONTROLS

Fig. 2 Basic boiler controls

[1] Service engineer symbol = boiler is set to maximum or minimum output for

service

[2] Service button for heating engineers

[3] Indicator for burner operation

[4] Boiler ON/OFF - does not electrically isolate the boiler

[5] Button lock

[6] Eco button

[7] Reset button

[8] Display

[9] Hot Water temperature control

[10] Pressure gauge

[11] Position for optional programmer

[12] Central Heating temperature control

[13] Indicator for burner operation (ON)/faults (flashing)

6720801019-01.2Wo

1 2 4 5 6 7 8 103

11 12 13

Operation

6 720 811 923 (2014/07)

5OPERATION

5.1 SWITCHING THE APPLIANCE ON/OFF

SWITCHING ON FOR THE FIRST TIME

▶ Switch appliance on at the main switch.

The display indicates the current heating water flow temperature.

The indicator for burner operation/faults is permanently on, as long as the burner

is operational.

Fig. 3

• Please do not turn your boiler OFF. If you switch your boiler off your frost

protection mode will be deactivated.

• Switching the boiler OFF does not electrically isolate the appliance. Your installer

must isolate the mains electricity before starting work and observe all relevant

safety precautions.

• In the event of an electrical power interruption when the boiler re-starts it will

enter a start-up mode for approximately 15 minutes duration.

The trap filling function ensures that the condensate trap is filled after the appliance

is first installed or if it has not been used for a long period. For that reason, the

appliance is held at minimum heat output for 15 minutes.

When the flow temperature alternates with the symbol on

the display, the trap filling function is active.

max

6 720 613 896-05.1O

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