Bosch Worcester Greenstar 24i junior Bedienungsanleitung

Greenstar 24i jjuunniioorr/ 28i jjuunniioorr

WALL HUNG GAS-FIRED CONDENSING COMBINATION BOILER

FOR SEALED CENTRAL HEATING SYSTEMS & DOMESTIC HOT WATER

USER INSTRUCTIONS &

CUSTOMER CARE GUIDE

THIS BOILER IS USED WITH

NATURAL GAS OR LPG (Cat II 2H3P TYPE C13, C33 & C53)

NATURAL GAS 24i junior GC NUMBER: 47 311 86

28i junior GC NUMBER: 47 311 87

LIQUID PETROLEUM GAS 24i junior GC NUMBER: 47 311 90

28i junior GC NUMBER: 47 311 91

USER INSTRUCTIONS & CUSTOMER

CARE GUIDE

PLEASE READ THESE INSTRUCTIONS

CAREFULLY BEFORE OPERATING

YOUR BOILER

THESE INSTRUCTIONS ARE

APPLICABLE TO THE WORCESTER,

BOSCH GROUP BOILER MODEL(S)

STATED ON THE FRONT COVER OF THIS

MANUAL ONLY AND MUST NOT BE

USED WITH ANY OTHER MAKE OR

MODEL OF BOILER.

THE INSTRUCTIONS APPLY IN THE UK

ONLY AND SHOULD BE FOLLOWED

EXCEPT FOR ANY STATUTORY

OBLIGATION.

IF YOU ARE IN ANY DOUBT CONTACT

THE WORCESTER, BOSCH GROUP

TECHNICAL SUPPORT.

DISTANCE LEARNING AND TRAINING

COURSES ARE AVAILABLE FROM

WORCESTER, BOSCH GROUP.

THIS BOILER MUST BE INSTALLED BY A

GAS SAFE REGISTERED, COMPETENT

PERSON. FAILURE TO INSTALL

CORRECTLY COULD LEAD TO

PROSECUTION.

PLEASE LEAVE THIS GUIDE, THE

INSTALLATION INSTRUCTIONS AND

THE COMPLETED BENCHMARK

CHECKLIST WITH THE USER.

NOTE: THE BENCHMARK CHECKLIST

AND SERVICE INTERVAL RECORD CAN

BE FOUND AT THE REAR OF THE

INSTALLATION, COMMISSIONING AND

SERVICE INSTRUCTIONS.

ABBREVIATIONS USED IN THIS BOOK:

NG - Natural Gas

LPG - Liquid Petroleum Gas

CH - Central Heating

SEDBUK - Seasonal Efficiency of Domestic

Boilers in the United Kingdom

USER INSTRUCTIONS &

CUSTOMER CARE GUIDE

WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

CONTACT INFORMATION

WORCESTER BOSCH:

TECHNICAL: 08705 266241

SERVICE: 08457 256206

LITERATURE: 01905 752556

SALES: 01905 752640

WEBSITE: www.worcester-bosch.co.uk

CONTENTS

WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

CONTENTS

INTRODUCTION

DEDICATED TO HEATING COMFORT 1

SAFETY PRECAUTIONS 2

GENERAL NOTES 3

USING YOUR BOILER

CONTROLS 6

OPERATING THE BOILER 7

Switching the boiler on/off 7

Setting the central heating temperature 7

Controlling central heating 7

Frost protection 7

Controlling domestic hot water 8

Fault condition 9

MAINTENANCE

MAINTAINING YOUR BOILER 10

FAULT FINDING 11

FAULT OR BREAKDOWN 12

ENERGY SAVING

TIPS ON ENERGY SAVING 13

GUARANTEE

YOUR GUARANTEE 15

GUARANTEE REGISTRATION 16

INTRODUCTION

USING YOUR

BOILER

ENERGY

SAVING

GUARANTEE

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 Group has led the field in innovative boiler design and performance

for more than 40 years. This heritage means all 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 our no-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.

To find out more about Worcester, Bosch Group log onto www.worcester-bosch.co.uk .

MAINTENANCE

EXCELLENCE COMES AS STANDARD WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

INTRODUCTION

IF YOU SMELL GAS!

DO NOT SMOKE OR STRIKE MATCHES

DO NOT TURN ELECTRICAL SWITCHES ON OR OFF

PUT OUT NAKED FLAMES

OPEN DOORS AND WINDOWS

KEEP PEOPLE AWAY FROM THE AREA AFFECTED

TURN OFF THE CONTROL VALVE AT THE METER

CALL YOUR GAS COMPANY

COMBUSTIBLE AND CORROSIVE MATERIALS

Do not store or use any combustible materials (paper, thinners, paints etc.) inside or

within the vicinity of the boiler.

Chemically aggressive substances can corrode the boiler and invalidate any warranty.

FITTING & MODIFICATIONS

Fitting the boiler, any controls to the boiler and removal of the outer casing may only

be carried out by a competent engineer in accordance with the Gas Safety

(Installation and Use) Regulations.

Flue systems must not be modified in any way other than as described in the

Installation instructions and any misuse or unauthorised modifications to the boiler,

flue or associated components and systems could invalidate the warranty. The

manufacturer accepts no liability arising from any such actions. This does not affect

your statutory rights.

SAFETY PRECAUTIONS

WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

INTRODUCTION

SERVICING

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

Worcester service engineer or alternatively a British Gas or other Gas Safe registered

person.

Always use original spares, to help maintain the economy, safety and reliability of the

boiler and to have the Service Record completed in the Benchmark checklist.

IMPORTANT: Ensure that the service engineer completes the Service Record in

the Benchmark checklist after each service.

The completed Benchmark checklist will be required in the event of

any warranty work and may be required by the local Building Control

Inspector.

NOTE: The Benchmark checklist and service interval record can be found at

the rear of the Installation, Commissioning and Servicing

Instructions.

BENCHMARK STANDARD

‘Benchmark’ is a code of practice for correctly installing, commissioning and servicing

of domestic water heating boilers.

A Benchmark Checklist is provided by the manufacturer for the installer to complete

ALL details together with their Gas Safe registration number and sign to confirm that

the boiler has been installed and commissioned according to the manufacturer’s

instructions.

HEALTH & SAFETY

The boiler contains no asbestos and no substances used in the construction process

that contravene the COSHH Regulations (Control of Substances Hazardous to Health

Regulations 1988).

GENERAL NOTES

To get the best from your boiler please

read these instructions carefully.

SEALED HEATING SYSTEMS

This boiler is fitted to a sealed heating

system which is pre-pressurised. Your

installer will advise you of the minimum

and maximum pressure which should be

indicated on the pressure gauge.

Check regularly that the pressure is

maintained and contact your installer or

maintenance engineer if a permanent

significant drop in pressure is indicated

on the pressure gauge. If the system

loses pressure it should be re-pressurised

and the cause of the fall investigated.

CENTRAL HEATING SYSTEMS

During the first few hours of operation of

the central heating system, check that all

radiators are being heated evenly. If the

top of a radiator is at a lower temperature

than the bottom then it should be vented

by releasing air through the venting screw

at the top of the radiator. Ask your

installer to show you how this is done.

This boiler is fitted to a sealed system;

repeated venting will reduce the quantity

of water in the system and this must be

replenished for safe and satisfactory

operation of the boiler.

Should water leaks be found in the

system or if excessive venting is required,

then a service engineer must be

contacted to inspect the installation and

rectify any fault.

Only additives that are compatible with

aluminium may be used in the system. Any

incompatible additive used will invalidate

the guarantee.

CONDENSATE DRAIN

This is a condensing boiler and the

terminal will, at times give out a plume of

water vapour. This is quite normal.

The boiler also produces quantities of

condensate which is discharged regularly

by a syphon within the boiler via a pipe to

drain. This pipe must not be blocked or

altered in any way.

CLEARANCES - VENTILATED

COMPARTMENT

Your installer will have provided adequate

space around the boiler for safety and

servicing access. Do not restrict this

space with the addition of cupboards,

shelves etc. next to the boiler.

GENERAL NOTES

ROOM THERMOSTAT

A room temperature controller and

programmer should be fitted to control the

central heating. Refer to the instructions

supplied with the thermostat for

information on siting and setting.

THERMOSTATIC RADIATOR VALVES

It is recommended that this type of valve is

fitted to all but one of the radiators (or at

least those in the sleeping

accommodation). The remaining radiator,

which must be where the room thermostat

is located, should be un-controlled and

must be left open. The thermostatic

radiator valves should conform to the

requirements of BS2767:10.

INTRODUCTION

*600mm service clearance required to a fixed surface

(**25mm from removable door or panel)

WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

SAFETY PRECAUTIONS 5

GENERAL NOTES

INTRODUCTION

+ 30mm

above elbow

200mm*

100mm**

600mm***

200mm

***

BOILER CLEARANCES -

UNVENTILATED COMPARTMENT

The diagram opposite shows the

minimum space required to install and

service the boiler inside an unventilated

compartment.

** Space required for unventilated areas

with a removable door or panel.

*** 600mm clearance required to a fixed

surface for servicing.

* The boiler must have more clearance in

the unventilated compartment compared

to the ventilated compartment.

Two examples are shown opposite, refer

to the “Installation, commissioning and

servicing instruction manual” for further

information.

Do not add cupboards, shelves etc. to

restrict the space around the boiler.

VENTILATION

This is a room sealed boiler and does not

require any air for combustion from inside

the property. If the boiler is fitted into a

cupboard or a compartment is built

around the boiler after installation, then

the compartment must be separated from

the boiler space by a perforated non-

combustible partition as described in BS

6798.

Notwithstanding the requirements of BS

6798 and BS 5440 there is no need for

ventilation openings to be provided in the

compartment because of the low heat

loss from the boiler casing, if the

clearances shown are maintained.

Do not operate the boiler if the flue

terminal fitted on the outside wall or roof

is obstructed or damaged.

PUMP ANTI-SEIZURE

If there has been no heating demand for

24 hours the boiler will run the system

pump for a few seconds to reduce the

possibility of pump seizure during long

periods of inactivity, which is usually more

frequent during the summer months.

WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

CONTROLS WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

CONTROLS



To gain access to the boiler controls

push at the top of the flap and release.

1. CENTRAL HEATING

TEMPERATURE CONTROL

2. MAINS ON/OFF INDICATOR +

FAULT DIAGNOSTIC LIGHT

3. BURNER ON INDICATOR LIGHT

(GREEN)

4. ECO BUTTON (DOMESTIC HOT

WATER PRE-HEAT ON/OFF)

5. FAULT RESET BUTTON

6. SYSTEM PRESSURE GAUGE

7. POSITION FOR OPTIONAL

PROGRAMMER

USING YOUR

BOILER

PUSH

OPERATING THE BOILER

WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

OPERATING THE BOILER

USING YOUR

BOILER

SWITCHING THE BOILER ON/OFF

Switching on



Switch on the boiler at the mains supply,

the indicator light shows blue. There

should be no need to switch the boiler off

unless, in the unlikely event, a fault has

occurred.

Switching off



Should you need to switch off the boiler

then do so at the mains supply.

The blue

indicator light goes out.

NOTE: When the boiler is switched off

frost protection is disabled.

SETTING THE TEMPERATURE



Turn the temperature control knob to

the desired level, approximate

temperatures for each setting are shown

in the table opposite.

When the burner is lit, the green burner

on indicator light is illuminated.

CONTROLLING CENTRAL HEATING



Set the timer to the correct time.



Set room thermostat to the desired

room temperature.



Set the thermostatic radiator valves to

the desired settings.

FROST PROTECTION



In the event where the boiler is not to be

used for a period of time, leave power on

and turn the temperature control to .

If the temperature falls below 5°C within

the boiler it will periodically fire to avoid

the possibility of freezing.



If remote pipework is exposed to

low temperatures, ensure that the

installer has added a frost

thermostat.

Min --- 40°C

1--- 47°C

2--- 53°C

3--- 61°C

4--- 68°C

5--- 74°C

6--- 80°C

Max --- 82°C

HOT WATER TEMPERATURE

The hot water temperature is fixed at

55°C and can not be adjusted.

DOMESTIC HOT WATER PRE-HEAT

Pre-heat reduces the time taken to

produce hot water at the tap and is

controlled by the ECO button.



Press and hold the ECO button to

select either, not illuminated or

illuminated:

When the ECO button is not

illuminated the boiler will be in pre-

heat mode (which will reduce the time

taken to produce hot water at the tap).

When the ECO button is illuminated

the boiler will be in ECO mode with no

pre-heat available.

OPERATING THE BOILER

OPERATING THE BOILER WORCESTER BOSCH GREENSTAR 24i/28i Junior

8 716 115 661 (05/2009)

USING YOUR

BOILER

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