User instructions
6720813340-00.1Wo
Wall hung RSF gas fired condensing regular boiler
GREENSTAR Ri
For central heating systems
ErP
These appliances are for use with :
Natural Gas or L.P.G.
(Cat. II 2H 3P type C13, C33 & C53)
Model GC Number
15Ri
18Ri
24Ri
15Ri
18Ri
24Ri
ErP
ErP
ErP
ErP
ErP
ErP
ErP
ErP
41-406-41
41-406-43
41-406-45
41-406-47
41-406-42
41-406-44
41-406-46
41-406-48
Natural Gas 12Ri
L.P.G. 12Ri
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 t he gas
tank.
6 720 813 340 (2014/09)
UK/IE
Preface
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 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 7
3.1.1 Switching the boiler ON/Off 7
3.1.2 Setting the boiler flow temperature 7
3.1.3 Turning the central heating off during the
summer 8
3.1.4 Boiler frost protection 8
4 System pressure 9
4.1 Open vented heating systems 9
4.2 Sealed heating systems 9
4.3 External filling loop 10
5 Service Clearances 11
6 Maintaining your appliance 12
12 Glossary 19
7Fault Finding13
7.1 Boiler reset 14
7.2 Extreme cold weather 15
8Fault or breakdown16
9 Tips on energy saving 17
10 Environment / disposal 18
11 Your guarantee 18
Greenstar Ri
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- 6 720 813 340 (2014/09)
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.
Greenstar Ri
ErP
- 6 720 813 340 (2014/09)
5
Controls
6720813340-01.1Wo
1
4
32
7
6
5
3Controls
Fig. 1 Controls
1 Mains power ON/OFF knob 5 Maximum flow temperature position
2 Indicator/Diagnostic light “MAINS ON/OFF” (Blue) 6 Boiler reset position
3 Minimum flow temperature position 7 Burner ON indicator light (Green)
4 Flow temperature control knob
Table 2
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Greenstar Ri
ErP
- 6 720 813 340 (2014/09)
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