Worcester Greenstar CDi Compact ErP Bedienungsanleitung

UK/IE

User instructions

Wall hung RSF gas fired condensing combination boiler

Greenstar CDi Compact ErP

6720643358-00.1Wo

For sealed central heating systems and mains fed domestic hot water

6 720 813 277 (2014/09)

If you smell gas:

▶ Well away from the building: call the National Gas

Emergency Service on 0800 111 999.

▶ L.P.G. boilers: Call the supplier’s number on the

side of the gas tank.

These appliances are for use with:

Natural Gas or L.P.G.

(Cat. II 2H 3P type C13, C33 & C53)

Model GC Number

Natural Gas 28CDi Compact ErP 47-406-77

32CDi Compact ErP 47-406-79

36CDi Compact ErP 47-406-81

L.P.G. 28CDi Compact ErP 47-406-78

32CDi Compact ErP 47-406-80

36CDi Compact ErP 47-406-82

Preface

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

Preface

Please read these instructions carefully

These instructions are applicable to the Worcester, Bosch

Group appliance 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 appliance manufactured by Worcester, Bosch

Group. The company prides itself on manufacturing appliances

to the strictest quality control standards throughout every

stage of production.

Worcester, Bosch group has led the field in innovative

appliance 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 is

amongst the top energy rated appliances available.

There is also the reassurance of our parts and labour guarantee

- backed up by Worcester Total Cover, an optional complete

maintenance scheme to keep your appliance operating at peak

condition and efficiency.

Contents

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

Contents

1 Key to symbols and safety instructions . . . . . . . . . . . . 4

1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . 4

2 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.1 Operating the boiler . . . . . . . . . . . . . . . . . . . . . . 8

3.1.1 Boiler display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1.2 Setting the boiler flow temperature for

the central heating system . . . . . . . . . . . . . . 8

3.1.3 Boiler frost protection . . . . . . . . . . . . . . . . . . . . . 9

3.1.4 Turning the central heating off during

the summer . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.5 Setting the flow temperature for

domestic hot water system . . . . . . . . . . . . . . 9

3.1.6 Domestic hot water eco and preheat modes . . . 9

3.1.7 Domestic hot water preheat mode

manual activation (Eco mode off) . . . . . . . .10

3.1.8 Domestic hot water preheat mode timed

activation, with facia timer or external timer

connected (eco mode off) . . . . . . . . . . . . . .10

3.1.9 Turn off the Operation/fault diagnostic light

(blue) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4 System Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1 Sealed heating systems . . . . . . . . . . . . . . . . . . 11

4.2 Using the Worcester integral keyed

filling link . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5 Service clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6 Maintaining your appliance . . . . . . . . . . . . . . . . . . . . 14

7 Fault finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.1 Boiler alert state . . . . . . . . . . . . . . . . . . . . . . . 16

7.2 Boiler reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7.3 Extreme cold weather . . . . . . . . . . . . . . . . . . . 17

8 Fault or breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

9 Tips on energy saving . . . . . . . . . . . . . . . . . . . . . . . . 19

10 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . 20

11 Your guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

12 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Key to symbols and safety instructions

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

1 Key to symbols and safety instructions

1.1 Key to symbols

Warnings

The following keywords are defined and can be used in this

document:

•NOTICE indicates a situation that could resultin damage to

property or equipment.

•CAUTION indicates a situation that could result in minor to

medium injury.

•WARNING indicates a situation that could result in severe

injury or death.

•DANGER indicates a situation that will result in severe

injury or death.

Important information

Additional symbols

Examples of additional symbols used

A numbered step in an action sequence

A sequence of numbered steps or actions carried out in a

specific order to complete a task.

1. First action

2. Second action

3. Third action

etc.

A step in an action sequence

A sequence of defined actions or steps carried out in order to

complete a task.

▶Action

▶Nextaction

▶etc

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

other related documents

a reference number to identify or refer to a part or

item

•alistentry

– a list entry (second level)

Table 1

General information

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

Combustible and corrosive materials:

Chemically aggressive substances can corrode the appliance

and invalidate any guarantee.

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

thinners, paints, propellants, cleaning agents etc.) inside

the cupboard containing the appliance or within the vicinity

of the appliance.

Fittings and modifications:

Only a competent engineer can remove the appliance case and

carry out any work, in accordance with the Gas Safety

(Installation and Use) Regulations.

• Do not remove the appliance case.

Any misuse or unauthorised modifications to the appliance,

flue or associated accessories and heating system will

invalidate the guarantee.

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

Worcester, Bosch Group accepts no liability arising from any

such actions. This does not affect your statutory rights.

Cleaning the appliance case:

Use a damp, soft cloth to clean the outer painted metal case of

the appliance, do not use chemicals or abrasive materials.

2 General information

2.1 Energy efficiency

Energy efficiency information is given in the Installation,

Commissioning and Servicing Instructions supplied with the

appliance.

2.2 Servicing

• The appliance 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 appliance 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.

2.3 Benchmark standard

The Benchmark initiative is a

code of practice to encourage

the correct installation,

commissioning and servicing of

domestic central heating

appliances and system

equipment.

A “checklist” is dispatched with every appliance and can be

found towards the back of the Installation, Commissioning and

Servicing Instructions. This is a vital document that needs to be

completed by the installer at the time of installation. It confirms

that the appliance has been installed and commissioned

according to the manufacturer's instructions.

The service record provides space for the recording of regular

servicing of the appliance/heating system and this can become

a valuable document when, for example, you wish to sell the

property. The service record 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

2.4 User caution

• It isforbidden for any interference with the appliance other

than those actions allowed in this document.

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.

CAUTION: Incorrect use

▶ Any incorrect use can result in danger to

the householder.

Controls

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

3Controls

▶ To gain access to the boiler controls pull the flap down using the curved flap handle.

Fig. 1 Basic boiler controls

* for Worcester service engineer use only

Boiler

Controls

1Service menu/back button 9 Scroll down button

2Service engineer symbol = boiler is set to maximum

or minimum output for service

10 The blue light is ON when the boiler is in an

operational mode.

It will also flash to indicate a fault.

3Eco button

4Reset button 11 Position for optional programmer

5Boiler display 12 Hot water temperature control

6Central heating temperature control 13 Diagnostic port*

7Scroll up button

8OK - Select/confirmation button 14 Central heating system pressure gauge

6720643358-02.1Wo

1 3 65 7 8 9 10 11 12 13 1442

Controls

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

Display symbols

SCREEN DISPLAY BRIEF DESCRIPTION EXPLANATION

All possible screen symbols This screen is displayed briefly during boiler start up

and shows all the symbols that could be displayed on

the screen.

Numerical display Displays a temperature setting or boiler status code.

Text display Display PreHeat or Eco, or the Alert code

Hot water Displays this symbol during a DHW demand.

Central Heating Displays this symbol during central heating demand.

Service engineer mode Displays during service when the boiler is set to

maximum or minimum output.

Alert Displays along with the boiler status code and

diagnostic code during a fault condition.

Service mode Displays when a qualified service engineer is in the

service menus.

Burner on The boiler is in operation and the flame is alight.

Centigrade indication Displays next to the temperature reading.

Confirmation This symbol confirms a setting change.

Maintenance codes A code displayed with an H and a number relates to a

maintenance issue. This is not a boiler fault but an

indication that something will need attention

concerning the boiler.

The example shown is H13 Service interval reached,

the boiler requires servicing.

Call your installer or Worcester Bosch Group to

organise a service visit.

°C

°F

H 13

Controls

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

3.1 Operating the boiler

3.1.1 Boiler display

This is typical of the display when the boiler is not supplying a central heating or hot water demand.

The display will not be backlit and the internal temperature of the boiler is displayed.

When heat is demanded and the boiler fires up, the flame symbol will be displayed.

3.1.2 Setting the boiler flow temperature for the central heating system

1. Turn the central heating temperature control knob to the desired flow temperature between 30 and 82°C, this will be indicated

on the digital display. This is not the room temperature but the flow temperature through the radiators.

The “e” point provides guidance for the maximum temperature setting for optimum energy efficiency.

2. The radiator symbol will be displayed to confirm that the a central heating setting is being changed.

3. The value is displayed during this process, press to exit or after five seconds of inactivity the boiler display will return to

the default screen.

▶ Comfort levels within rooms should be controlled by your thermostatic radiator valves and/or room thermostat.

max

min

bar

eco

reset

max

min

°C

°F

Eco

°C

°F

Eco

6720813275-01.1Wo

max

min

bar

eco

reset

max

min

°C

°F

Eco

6720643358-03.1Wo

°C

°F

Eco

Controls

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

3.1.3 Boiler frost protection

If you are leaving your property unoccupied during cold weather, please leave your programmer on constant and your room

thermostat set to 15°C.

▶ If the temperature within the boiler falls below 8°C the pump will run to circulate water and prevent the system freezing.

– If the temperature does not rise to 9°C within 30 minutes of the pump operating, the boiler will fire up to provide heat to

bring the temperature up.

▶ If the temperature within the boiler falls below 5°C the boiler will fire immediately, bringing the boiler temperature up to 12°C

to avoid the possibility of the system freezing.

▶ This process will be repeated until such time that the boiler temperature does not drop below 5°C.

3.1.4 Turning the central heating off during the summer

▶ Turn your programmer/timer to the off position.

▶ Please refer to the programmer/timer manufacturer's instructions.

3.1.5 Setting the flow temperature for domestic hot water system

1. Turn the hot water temperature control knob to the desired level between 40 and 60°C, this will be shown on the digital display.

The value is displayed during this process, press to exit or after five seconds of inactivity the boiler display will return to the

default screen.

3.1.6 Domestic hot water eco and preheat modes

• Eco mode is an energy saving feature which disables the Preheat function. Eco is enabled by default, during the initial appliance

start up and Eco is displayed.

• Preheat mode, the hot water heat exchanger is kept pre-heated to reduce the time taken to deliver hot water at the tap.

In the Preheat mode, if there has been no demand for hot water for 24 hours the appliance will save energy by suspending Preheat

until there is a demand for hot water. At this time Preheat mode is re-activated. It is advised to use a twin channel programmer to

time the Preheat function and switch it off when it is not needed.

Do not switch the appliance off at the mains fused spur.

max

min

bar

eco

reset

max

min

°C

°F

Eco

°C

°F

6720643358-05.1Wo

Controls

Greenstar CDi Compact ErP - 6 720 813 277 (2014/09)

3.1.7 Domestic hot water preheat mode manual activation (Eco mode off)

Eco mode is enabled by default and the PreHeat can be can be enabled.

1. Press and hold for at least four seconds to enter the PreHeat mode, when preheat mode is active, “PreHeat” will be

displayed.

▶ To exit PreHeat mode and return to PreHeat, press and hold for at least four seconds, PreHeat will be displayed.

3.1.8 Domestic hot water preheat mode timed activation, with fascia timer or external timer connected (eco mode off)

When a twin channel programmer is fitted/connected, the Preheat/Eco option can be selected via the programmer.

• Programmer hot water channel ON periods:

– “PreHeat” mode is active and indicated on the appliance display.

• Programmer hot water channel OFF periods:

– “Eco” mode active and indicated on the appliance display.

3.1.9 Turn off the Operation/fault diagnostic light (blue)

You may choose to deactivate the operation/fault diagnostic light. Please ask your installer to set-up this feature.

The light will still flash to alert you to a possible fault, but will not activate during a heat requirement demand for heating or hot water.

eco

max

min

bar

eco

reset

max

min

°C

°F

Eco

6720813275-02.1Wo

°C

°F

Eco

°C

°F

PreHeat

max

min

bar

eco

reset

max

min

°C

°F

Eco

select select

set ?

advance advance

heating hot water

once

timed

off

once

timed

off

6720813275-03.1Wo

°C

°F

Eco

°C

°F

PreHeat

OFF

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