Contents

preface
Table of contents
1 Symbols and safety precautions
- 1.1 Explanation of symbols
- 1.2 safety precautions
- 2 General Information
- 3 Operating the boiler
  - 3.1 Controls
  - 3.2 Switching the boiler on/off
  - 3.3 Setting the central heating temperature
    - 3.3.1 Controlling the central heating
  - 3.4 Setting the domestic hot water temperature
  - 3.5 Frost protection (for the boiler)
    - 3.5.1 Frost protection (for the heating system)
  - 3.6 Domestic hot water pre-heat
  - 3.7 Holiday setting
  - 3.8 Fault condition
- 4 Maintenance
  - 4.1 Re-Pressuring the heating system
  - 4.2 Fault finding
  - 4.3 Error codes
  - 4.4 Extreme cold weather
- 5 General notes
- 6 Fault or Breakdown
- 7 Tips on energy saving
- 8 Your guarantee
- 9 Glossary

Worcester Greenstar 29CDi 2012 User Instructions

Worcester Greenstar 29CDi 2012 Boiler manual cover

Pages 20

Year 2012

Language(s)

of 20

Worcester Greenstar 29CDi 2012 Boiler Specification

The Worcester Greenstar 29CDi 2012 is a high-efficiency condensing combi boiler designed to provide superior heating performance for residential properties. This model offers a robust solution with a maximum central heating output of 29 kW, ensuring it can effectively heat medium to large homes. It features a domestic hot water flow rate of up to 12.3 liters per minute, catering to households with higher hot water demands.

Engineered with advanced technology, the 29CDi boasts a SEDBUK A-rating for efficiency, meaning it operates at over 90% efficiency, which can significantly reduce energy bills and carbon emissions. The boiler includes a modulating pump that adapts power consumption to the heating demand, further enhancing energy efficiency.

The compact design of the Greenstar 29CDi allows for flexible installation options, fitting neatly into standard kitchen cupboards or small utility spaces. It incorporates an intuitive digital display for easy temperature control and diagnostics, and it is compatible with a range of optional controls and smart thermostats, offering enhanced user convenience and energy management.

For reliability, the boiler is equipped with frost protection and a robust aluminum-silicon heat exchanger, designed to withstand corrosion and extend the unit's lifespan. The Greenstar 29CDi also includes a pre-heat function, ensuring immediate hot water availability and reducing waiting times.

The Worcester Greenstar 29CDi 2012 is engineered to meet rigorous quality standards and is backed by Worcester's reputation for durability and customer support. With its combination of efficiency, performance, and compact design, it serves as an ideal heating solution for modern homes.

Worcester Greenstar 29CDi 2012 Boiler F.A.Q.

How do I reset my Worcester Greenstar 29CDi 2012 Boiler?

To reset the boiler, locate the reset button on the front panel. Press and hold the button for 3 seconds. Release the button and wait for the boiler to restart.

What should I do if my Worcester Greenstar 29CDi 2012 Boiler is leaking water?

If you notice a water leak, turn off the water supply and the boiler. Check for visible damage or loose connections. If the issue persists, contact a certified heating engineer for inspection.

How can I bleed the radiators connected to my Worcester Greenstar 29CDi 2012 Boiler?

Turn off the heating system and allow the radiators to cool. Use a radiator key to open the bleed valve at the top of each radiator. Release air until water starts to flow, then close the valve.

Why is my Worcester Greenstar 29CDi 2012 Boiler not heating water?

Check if the thermostat is set correctly and ensure the boiler is receiving power. If the issue continues, it could be due to a faulty diverter valve or airlock in the system. Consult a professional for repair.

What does the error code EA mean on my Worcester Greenstar 29CDi 2012 Boiler?

Error code EA indicates a failure to ignite. Check the gas supply and ensure there are no blockages in the flue. If the problem persists, contact a qualified technician.

How often should I service my Worcester Greenstar 29CDi 2012 Boiler?

It is recommended to service your boiler annually to ensure it operates efficiently and safely. Regular servicing can help prevent unexpected breakdowns and extend the lifespan of the boiler.

What pressure should my Worcester Greenstar 29CDi 2012 Boiler be at?

The ideal pressure for the boiler should be between 1 and 1.5 bar when cold. If the pressure is too low, you may need to top up the system using the filling loop.

How do I top up the pressure on my Worcester Greenstar 29CDi 2012 Boiler?

Locate the filling loop beneath the boiler. Open the valves slowly to allow water into the system until the pressure gauge reads between 1 and 1.5 bar. Close the valves once the desired pressure is reached.

What should I do if my Worcester Greenstar 29CDi 2012 Boiler makes a banging noise?

A banging noise, often referred to as "kettling," could be due to limescale buildup or air in the system. Flushing the system or using a descaler might help. If the noise persists, consult a heating professional.

Can I use a smart thermostat with my Worcester Greenstar 29CDi 2012 Boiler?

Yes, a smart thermostat can be used with the boiler. Ensure compatibility and follow the installation instructions provided by the thermostat manufacturer. For complex installations, consider hiring a professional.