worcester Greenstar ErP System Compact 30I, Greenstar ErP System Compact 30I LPG User guide

User instructions

Wall hung RSF gas fired condensing system boiler

Greenstar i System Compact

ErP

For central heating systems and indirect mains fed domestic hot water

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 27i System Compact

30i System Compact

L.P.G. 27i System Compact

30i System Compact

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.

6720643358-00.1Wo

ErP

ErP

ErP

ErP

41-406-58
41-406-60
41-406-59
41-406-61

6 720 813 281 (2014/09)

UK/IE

Preface

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 e fficient,
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.

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Contents

Contents

1 Key to symbols and safety instructions 4

1.1 Key to symbols 4

1.2 Safety precautions 4

2 General information 5

2.1 Energy efficiency 5

2.2 Servicing 5

2.3 Benchmark standard 5

2.4 User caution 5

3Controls6

3.1 Operating the boiler 8

3.1.1 Boiler display 8

3.1.2 Setting the boiler flow temperature for the
system 8

3.1.3 Turning the central heating off during the
summer 8

3.1.4 Boiler frost protection 9

3.1.5 No Integral diverter valve fitted: Cylinder
temperature adjustment 9

3.1.6 Optional integral diverter valve kit fitted:
Setting the cylinder hot water temperature. 9

3.1.7 Domestic hot water eco and preheat modes
10

3.1.8 Domestic hot water: switching between Eco
and Preheat modes 10

3.1.9 Turn off the Operation/fault diagnostic light
(blue) 10

8 Fault or Breakdown 18

9 Tips on energy saving 19

10 Environment / disposal 20

11 Your guarantee 20

12 Glossary 21

4System Pressure11

4.1 Sealed heating systems 11

4.2 External filling loop 12

5 Service Clearances 13

6 Maintaining your appliance 14

7Fault Finding15

7.1 Boiler alert state 16

7.2 Boiler reset 16

7.3 Extreme cold weather 17

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3

Key to symbols and safety instructions

1

1 Key to symbols and safety instructions

1.1 Key to symbols

Warnings

Safety instructions in this document are
framed and identified by a
warning triangle which is printed on a grey
background.

The following keywords are defined and can be used in this
document:

• NOTICE indicates a situation that could result in 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

This symbol indicates important information
where there is no risk to people or property.

Additional symbols

Symbol Meaning

1. a numbered step in an action sequence

▶ a step in an action sequence
 a reference to a related part in the document or to

other related documents

a reference number to identify or refer to a part or

item

•a list entry
– a list entry (second level)

Table 1

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
▶Next action
▶etc

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

To refer the reader to a specific figure/table/section within the
manual.

 e.g. figure 1.

A reference number to identify or refer to a part or item.

In a related figure, items or parts identified by a sequential
number.

List entries, first and second levels

• A single component/item

• A component/list, made up of multiple parts/items.
– Sub component or sublist of main component/list.
–etc.

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 or regulator.
▶ Open windows and doors.
▶ Warn your neighbours and leave the building.
▶ Prevent anyone from entering the building.
▶ 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.

Appliance operation:

This appliance can be used by children aged from 8 years and
above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge, if they have
been given supervision or instruction concerning the use of the
appliance, in a safe way, and understand the hazards involved.

Children shall not play with the appliance.

Cleaning and user maintenance shall not be made by children
without supervision.

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General information

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 an d
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

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.

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 th e 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 recor ding 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 is forbidden for any interference with the appliance other
than those actions allowed in this document.

CAUTION: Incorrect use
▶ Any incorrect use can result in danger to

the householder.

• 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.

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5

Controls

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1 3 65 7 8 9 10 11 12 13 1442

3Controls

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

Fig. 1 Basic boiler controls

1

Boiler
Controls

Service menu/back button 9 Scroll down button

2

Service engineer symbol = boiler is set to maximum
or minimum output for service

3

Eco button*

4

Reset button 11 Position for optional programmer

5

Boiler display 12 Hot water temperature control*

6

Central heating temperature control 13 Diagnostic port**

7

Scroll up button

8

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

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

operational mode.
It will also flash to indicate a fault.

* Requires optional integral diverter kit to be functional ** for Worcester service engineer use only

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Display symbols

°C

°C

°C

°F

H 13

SCREEN DISPLAY

Controls

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

Text display Display PreHeat or Eco, or the Alert code

Hot water Displays this symbol during a DHW demand, if the

Central Heating Displays this symbol during central heating

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

Alert Displays along with the boiler status code and

Service mode Displays when a qualified service engineer is in

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 manual change.

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

code.

optional integral diverter valve kit is fitted.

demand.

maximum or minimum output.

diagnostic code during a fault condition.

the service menus.

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.

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7

Controls

max

min

2

3

1

04

bar

ok

eco

reset

e

max

min

°C

°F

°C

°F

6720807727-01.1Wo

max

min

2

3

1

04

bar

ok

eco

reset

e

max

min

°C

°F

Eco

1.

6720643358-03.1Wo

°C

°F

Eco

2.

3.

3.1 Operating the boiler

3.1.1 Boiler display

This is typical of the display when the boiler is not supplying a heat demand.
The display will not be backlit and the internal temperature of the boiler is indicated.

3.1.2 Setting the boiler flow temperature for the system

1. Turn the central heating temperature control knob to the desired flow temperatur e 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 system.
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 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.

ok

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

3.1.3 Turning the central heating off during the summer

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

▶ Turn your programmer/timer to the off position.
▶ Please refer to the programmer/timer manufacturer's instructions.

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Greenstar i System

ErP

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