WORCESTER GR2300iW C Gas-Fired Condensing Combi Appliance User Manual

GR2300iW C Gas-Fired Condensing Combi Appliance
User Manual

Preface

Dedicated to heating comfort.
Thank you for purchasing a Worcester product. We pride ourselves on manufacturing appliances to the strictest quality control standards throughout every stage of  production.
Worcester, Bosch group has led the field in innovative product design and performance for over 50 years. This heritage means all our products are of exceptional quality and  proven reliability.
Our products employ the latest technologies and they are reliable, extremely energy efficient, offering you economical running costs and value for money. They are amongst  the top energy rated appliances available.
There is also the reassurance of our parts and labour guarantee. Our Customer Service team is here to help you get the best from your Worcester product throughout its  lifetime. Whatever your enquiry, our specially trained team is available at our Worcester based contact centre and online via the website. For contact details see the back cover.

Explanation of symbols and safety instructions

1.1 Explanation of symbols
Warnings
In warnings, signal words at the beginning of a warning are used to indicate the type and seriousness of the ensuing risk if measures for minimizing danger are not taken.
The following signal words are defined and can be used in this document:

DANGER
DANGER indicates that severe or life-threatening personal injury will occur.
WARNING
WARNING indicates that severe to life-threatening personal injury may occur.
CAUTION
CAUTION indicates that minor to medium personal injury may occur.

NOTICE
NOTICE indicates that material damage may occur.
Important information
The info symbol indicates important information where there is no risk to people or property.

Additional symbols

1.2 General safety instructions
H Notices for the target group
These operating instructions are intended for the heating system operator.
All instructions must be observed. Failure to comply with instructions may result in material damage and personal injury, including danger to life.
▶ Read and retain the operating instructions (heat source, heating controller, etc.) prior to operation.
▶ Observe the safety instructions and warnings.
Determined use
The product may only be used for the heating of boiler water and for DHW heating.
Any other use is considered inappropriate. We assume no liability for damage occurring due to non-permitted use.
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.
▶ Move 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.
Danger to life from poisoning by flue gas
There is a danger to life from escaping flue gas.
▶ Never modify any parts through which flue gas is routed.
If flues are damaged or leaking, or if you smell flue gas, observe the following rules.
▶ Switch off the heat source.
▶ Open doors and windows
▶ Warn your neighbours and leave the building immediately.
▶ Prevent third parties from entering the building.
▶ Notify an approved contractor.
▶ Have any defects rectified.

Danger to life from carbon monoxide
Carbon monoxide (CO) is a poisonous gas, which arises during the incomplete combustion of fossil fuels such as oil, gas or solid fuels.
Dangers arise, if carbon monoxide escapes from the heating system due to a fault or a leak and collects unnoticed in enclosed spaces.
You can neither see, taste nor smell carbon monoxide.
To avoid danger from carbon monoxide:
▶ Have the heating system inspected and serviced regularly by an approved contractor.
▶ Use a CO detector, which gives an alarm in good time if CO escapes.
▶ If you suspect a CO leak:
– Warn your neighbours and leave the building immediately.
– Call an approved contractor.
– Have any defects rectified.

Inspection, cleaning and maintenance
The user is responsible for ensuring the heating system is safe and environmentally compatible.
Non-existent or improper inspection, cleaning and maintenance may result in personal injury, including danger to life or material damage.
We recommend that you enter into a contract covering an annual inspection and responsive cleaning and maintenance with an approved contractor.
▶ Have work carried out only by an approved contractor.
▶ Have the appliance and heating system inspected by an approved contractor at least once a year.
▶ Have any required cleaning or maintenance work carried out immediately.
▶ Have any defects in the appliance and heating system remedied immediately, independent of the annual inspection.

Fittings and modification
Only a competent engineer can remove the appliance case and carry out any work, in accordance with the relevant Installation Regulations.
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.

Combustion air/ambient air
The air in the installation location must be free of flammable or chemically aggressive substances.
▶ Do not store or use any flammable or explosive materials (paper, petrol, thinners, paints, etc.) in the vicinity of the heat source.
▶ Do not store or use any corrosive substances (solvents, adhesives, chlorinated cleaning agents, etc.) in the vicinity of the heat source.

General considerations
▶ The boiler must be installed in a well ventilated area.
The openings must be kept in good condition.
▶ The vents or any other component contributing to the functioning of the boiler must not be reduced or sealed.
▶ We recommend an annual service of the appliance by an approved engineer to ensure reliable and efficient operation.

Safety of electrical devices for domestic use and similar purposes
The following requirements apply in accordance with EN 60335-1 in order to prevent hazards from occurring when using electrical appliances:
“This appliance can be used by children of 8 years and older, as well as by people with reduced physical, sensory or mental capabilities or lacking in experience and  knowledge, if they are supervised and have been given instruction in the safe use of the appliance and understand the resulting dangers. Children shall not play with the  appliance. Cleaning and user maintenance must not be performed by children without supervision.”
“If the power cable is damaged, it must be replaced by the manufacturer, its customer service department or a similarly qualified person, so that risks are avoided.”

Please read these instructions carefully
▶ These instructions are applicable to the Worcester appliance model/s stated on the front cover only.
▶ These instructions apply in the UK/IE only and must be followed except for any statutory obligation.

Product Information

2.1 Appliance identification and serial number

The data label [1] contains information of the appliance model and serial number. This is located centrally on the bottom of the appliance in line with the control panel.
For your own records
Please ensure that the Commissioning Checklist has been completed by your installer or service engineer.
Model:
Serial number:
Date of installation:
The appliance model and serial number can be found on the appliance data label.

2.2 Servicing
Ensure that the service engineer completes the Service Record in the Benchmark Checklist after each service.
The Service Record can be found at the rear of the appliance’s
Installation and Maintenance Instructions. It will be required in the event of any guarantee work and may be required by the local Building Control Inspector.
▶ To ensure the continued safe, reliable and environmentally optimum operation of the boiler, it must be thoroughly serviced annually by a competent, qualified person, such as a Worcester service engineer, British Gas engineer or other Gas Safe registered engineer. In the Republic of Ireland servicing work must be carried out by a Worcester service engineer or other Registered Gas Installer (RGII).
– Having a contract covering annual servicing, cleaning and maintenance is a good way to ensure this is not missed.
– It is important that any required maintenance or repairs are carried out without delay.
▶ Ensure that the service engineer completes the Service Record, at the rear of the Installation and Maintenance Instructions manual, after each service.
▶ Have any work carried out by a competent, qualified person, Worcester service engineer, British Gas engineer or other Gas Safe registered engineer. In the Republic of  Ireland servicing work must be carried out by a Worcester service engineer or other Registered Gas Installer (RGII).
▶ Always use original spares, to help maintain the efficiency, safety and reliability of the appliance.

2.3 Maintaining your appliance
Your new appliance represents a long term investment in a reliable, high quality product.
Wipe the appliance casing with a soft clean cloth. Please do not use chemical cleaning products which may damage the paint finish.
In order to realise the appliance’s maximum working life, and to ensure the appliance continues to operate at peak efficiency and performance, it is essential that servicing and  maintenance checks are performed at least once a year by a competent engineer in accordance with the current
Gas Safe Regulations.
If you would like to know more about servicing options from Worcester, Bosch Group, please visit worcester-bosch.co.uk.
Please tick the appropriate box on your warranty registration card for further details of the Worcester, Bosch Group Service Contract.
When your appliance requires servicing please contact a Worcester, Bosch Group contact centre (see rear cover, appointments).
In addition to the service contract we are pleased to offer a one-off annual service or breakdown call out for your appliance.
Maintenance tips

• Appliances on a sealed heating system:
  – Regularly check the system pressure.

• Do not obstruct the flue outlet or the air inlet.

• Use in hard water areas:
  – In exceptionally hard water areas a device to prevent scale formation may be fitted. Installation of a salt based water softener should be in accordance with the  requirements of the local water company. A bypass valve must be fitted and used to fill/top up the heating system with untreated water.

Important note:
▶ If you have to add water regularly in your heating system, call a competent, qualified person.

2.4 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.

Prepare for operation

3.1 Sealed heating system
Appliances that can be connected to sealed heating systems are prepressurised before operation, this pressure must be maintained for safe use of the appliance.
▶ Check regularly that the pressure is maintained.
▶ Re-charge the system if the pressure indicator reads less than 0.8 bar.
▶ If a permanent significant decrease or increase in pressure is shown on the pressure indicator, contact your installer or maintenance engineer.

Pressure indicator
▶ Type of pressure indicator for the system pressure.
– Pressure gauge (an analogue dial showing the pressure)
– Pressure menu (a digital readout of the pressure)
▶ Your appliance may have one or both types of methods to indicate the system pressure. The type of method used on this appliance will be detailed in the following section.
3.1.1 Checking the system pressure
Your installer will advise you of the optimum operating pressure.
▶ Check the system pressure on the pressure gauge.
– Static pressure is when appliance is cold and has not fired for heating or hot water. This will generally be 1 – 1.5 bar.
– Operating pressure is when the appliance is firing for a heating or hot water demand. This will generally be 1 – 2 bar.
▶ Top up the heating water, if the pressure is too low.

Fig. 2 Pressure gauge for checking the operating pressure

1. Static pressure range
2. Operating pressure range

3.1.2 Low pressure indication
Low pressure (shaded area [A]) will be indicated on the appliance:

• The needle is within the area between 0 and 1bar.
  Fig. 3 Low pressure indication
  [A] Low pressure area

3.1.3 Constantly re-pressurising the system
Constantly having to re-pressurise the heating system should be investigated as it is an indicator of potential leaks and the concentration of inhibitor protection in the system  will be reduced; this can result in corrosion within the heating system, reducing efficiency and increasing contaminates.
▶ Check for leaks on heating system (pipework and radiator valves).
▶ Contact your installer or maintenance engineer if a recurring significant decrease or increase in pressure is indicated on the pressure screen.
System pressure increasing:
▶ If the system pressure repeatedly increases and you need to vent air from the radiators, refer to→ section 3.2 “Topping up the system pressure”, page 8.

NOTICE
System fill method
▶ You must disconnect the external filling loop after re-pressurisation, to comply with the Water Authority regulations.

External filling loop
Once the external filling loop and pressure gauge has been located, follow the instructions for re-pressurising the system.
Refer to figure 4.
▶ Unscrew the blanking cap [1].
▶ Attach the hose [2] to the valve.
– Usually one end of the hose is already connected to one of the system fill isolation valves.
▶ Ensure both ends [3] of the hose are screwed on hand tight.
– The system fill isolation valves [4] are in a closed position (the handle/screwdriver slot is across the valve).
▶ Turn the handle/screwdriver slot through 90° to open valves and slowly fill the system to between 1 and 1.5bar.
– The system fill isolation valves [5] are opened (the handle/screwdriver slot is in-line with the valve).
– The needle on the pressure gauge will start to rise.
▶ Turn the handles/screwdriver slots back, through 90°, to close the valves.
– The system fill isolation valves [6] are in a closed position (the handle/screwdriver slot is across the valve).
▶ Top up the system pressure, if as a result of the air bleeding the pressure drops off.
▶ Remove the hose [2] and replace the blanking cap [1].

Data Protection Notice

We, Bosch Thermotechnology Ltd., Cotswold Way, Warndon, Worcester WR4 9SW, United Kingdom process product and installation information, technical and connection  data, communication data, product registration and client history data to provide product functionality (art. 6 (1) sentence 1 (b) GDPR), to fulfil our duty of product  surveillance and for product safety and security reasons (art. 6 (1) sentence 1 (f) GDPR), to safeguard our rights in connection with warranty and product registration  questions (art. 6 (1) sentence 1 (f) GDPR) and to analyze the distribution of our products and to provide individualized information and offers related to the product (art. 6 (1) sentence 1 (f) GDPR). To provide services such as sales and marketing services, contract management, payment handling, programming, data hosting and hotline services  we can commission and transfer data to external service providers and/or Bosch affiliated enterprises. In some cases, but only if appropriate data protection is ensured,  personal data might be transferred to recipients located outside of the European Economic Area. Further information are provided on request. You can contact our Data  Protection Officer under: Data Protection Officer, Information Security and Privacy (C/ISP), Robert Bosch GmbH, Postfach 30 02 20, 70442 Stuttgart, GERMANY. You  have the right to object, on grounds relating to your particular situation or where personal data are processed for direct marketing purposes, at any time to processing of your  personal data which is based on art. 6 (1) sentence 1 (f) GDPR. To exercise your rights, please contact us via privacy.ttgb@bosch.com To find further information, please
follow the QR-Code.

Bosch Thermotechnology Ltd.
Cotswold Way, Warndon
Worcester WR4 9SW
United Kingdom
Tel. 0330 123 9559
worcester-bosch.co.uk

References

• New Boilers | Worcester Bosch
• WEEE Electronic Waste | Bosch Home Comfort Group
• Guarantee | Worcester Bosch

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