Contents

Preface
Contents
1 Key to symbols and safety instructions
- 1.1 Key to symbols
- 1.2 Safety precautions
- 2 General information
  - 2.1 Energy efficiency
  - 2.2 Servicing
  - 2.3 Benchmark standard
  - 2.4 User caution
- 3 Controls
  - 3.1 Operating the boiler
    - 3.1.1 Switching the boiler ON/Off
    - 3.1.2 Setting the boiler flow temperature
    - 3.1.3 Turning the central heating off during the summer
    - 3.1.4 Boiler frost protection
- 4 System pressure
  - 4.1 Open vented heating systems
  - 4.2 Sealed heating systems
  - 4.3 External filling loop
- 5 Service Clearances
- 6 Maintaining your appliance
- 7 Fault Finding
  - 7.1 Boiler reset
  - 7.2 Extreme cold weather
- 8 Fault or breakdown
- 9 Tips on energy saving
- 10 Environment / disposal
- 11 Your guarantee
- 12 Glossary

Worcester Greenstar 12Ri 2014 User Instructions

Worcester Greenstar 12Ri 2014 Boiler manual cover

Pages 20

Year 2014

Language(s)

of 20

Worcester Greenstar 12Ri 2014 Boiler Specification

The Worcester Greenstar 12Ri 2014 boiler is a compact and efficient gas-fired condensing boiler designed for small to medium-sized homes. It operates with a heat output of 12 kW, making it suitable for properties with limited space. The boiler is part of Worcester Bosch's Greenstar range, known for energy efficiency and reliability. It features a compact design that allows for easy installation within a standard kitchen cupboard. The Greenstar 12Ri is ErP A-rated, ensuring high energy efficiency and reduced carbon emissions, which contribute to lower heating costs.

This model includes advanced heat exchanger technology that maximizes heat transfer while minimizing energy loss. The boiler is compatible with a range of optional controls, enhancing user convenience and further optimizing energy efficiency. It is designed for open vent heating systems and requires a separate hot water storage cylinder. The Greenstar 12Ri incorporates the latest safety features, including frost protection to prevent damage during cold weather.

The boiler's user-friendly interface allows for straightforward operation and troubleshooting. It is engineered to be quiet during operation, contributing to a more comfortable home environment. Installation and servicing are simplified by its straightforward access to internal components. The Worcester Greenstar 12Ri 2014 boiler is a reliable choice for homeowners seeking a balance between performance, efficiency, and value in their heating solutions. It is supported by Worcester Bosch’s reputation for quality and customer service, ensuring peace of mind for users.

Worcester Greenstar 12Ri 2014 Boiler F.A.Q.

How do I reset the Worcester Greenstar 12Ri boiler?

To reset the Worcester Greenstar 12Ri boiler, locate the reset button on the control panel. Press and hold the button for 3 seconds until the reset light goes out, then release.

What should I do if the boiler is not heating water?

Check the thermostat settings and ensure the heating controls are set correctly. Also, make sure the boiler has power and sufficient water pressure. If the issue persists, contact a qualified engineer.

How often should I service my Worcester Greenstar 12Ri boiler?

It is recommended to service your Worcester Greenstar 12Ri boiler annually to ensure it operates efficiently and safely.

What does the blue flashing light on my boiler indicate?

A blue flashing light typically indicates a fault or error in the system. Refer to the user manual for specific error codes or contact a professional engineer for assistance.

How can I increase the water pressure in my boiler?

To increase the water pressure, locate the filling loop and gradually open the valves until the pressure reaches the recommended level of 1-1.5 bar. Be sure to close the valves afterwards.

What are common causes of boiler leaks?

Common causes of boiler leaks include faulty seals, corrosion, or loose connections. It's important to address leaks promptly to avoid further damage.

How do I bleed the radiators connected to my boiler?

Turn off the heating, then use a radiator key to open the bleed valve at the top of each radiator. Allow trapped air to escape until water starts to flow, then close the valve.

Why is my boiler making unusual noises?

Unusual noises can be caused by air in the system, low water pressure, or a faulty pump. If noises persist, it's best to consult with a heating specialist.

Can I install a smart thermostat with my Worcester Greenstar 12Ri boiler?

Yes, a smart thermostat can be installed with the Worcester Greenstar 12Ri boiler to enhance control and efficiency. Ensure compatibility and consider professional installation.

What should I do if the pilot light goes out?

The Worcester Greenstar 12Ri is a modern boiler and does not have a pilot light. If the boiler stops working, check for error messages or consult a technician.