Contents

Preface
- Please read these instructions carefully
- Dedicated to heating comfort
Contents
1 Key to symbols and safety instructions
- 1.1 Key to symbols
  - Warnings
  - Important information
  - Additional 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
  - Display symbols
  - 3.1 Operating the boiler
    - 3.1.1 Boiler display
    - 3.1.2 Setting the boiler flow temperature for the central heating system
    - 3.1.3 Boiler frost protection
    - 3.1.4 Turning the central heating off during the summer
    - 3.1.5 Setting the flow temperature for domestic hot water system
    - 3.1.6 Domestic hot water eco and preheat modes
    - 3.1.7 Domestic hot water preheat mode manual activation (Eco mode off)
    - 3.1.8 Domestic hot water preheat mode timed activation, with fascia timer or external timer connected (eco mode off)
    - 3.1.9 Turn off the Operation/fault diagnostic light (blue)
- 4 System Pressure
  - 4.1 Sealed heating system
  - 4.2 Locating the integral filling link
  - 4.3 Optional integral keyless filling link
  - 4.4 Optional integral keyed filling link
  - 4.5 External filling loop
- 5 Service clearances
- 6 Maintaining your appliance
- 7 Fault finding
  - 7.1 Boiler alert state
  - 7.2 Boiler reset
  - 7.3 Extreme cold weather
- 8 Fault or breakdown
  - Technical support
- 9 Tips on energy saving
  - Heating economically
  - Central heating systems with room thermostat/thermostatic radiator valves
  - Room thermostats
  - New control systems
  - Roof insulation
  - Window frames
  - Radiators
  - Draughts
  - Curtains
- 10 Environment / disposal
  - Packaging
- 11 Your guarantee
  - Guarantee registration
  - For your own record:
- 12 Glossary

Worcester LPG 25Si Compact 2014 User Instructions

Worcester LPG 25Si Compact 2014 Boiler manual cover

Pages 24

Year 2014

Language(s)

of 24

Worcester LPG 25Si Compact 2014 Boiler Specification

The Worcester LPG 25Si Compact 2014 Boiler is a high-efficiency, wall-mounted combination boiler designed for small to medium-sized homes. It offers an impressive output of 24kW, making it suitable for properties with one bathroom. The compact design allows for flexible installation, fitting easily into a standard kitchen cupboard, which is ideal for homes where space is at a premium.

This model operates on LPG, catering to homes not connected to the main gas grid, and is equipped with advanced technology to maximize efficiency and reliability. The boiler features a low-energy pump, reducing energy consumption and contributing to lower utility bills. Additionally, it includes a user-friendly interface with intuitive controls, enabling precise temperature adjustments and easy operation.

The Worcester LPG 25Si Compact 2014 Boiler is compatible with a range of optional controls, including smart thermostats, which can further enhance energy efficiency by allowing remote management and scheduling. The boiler also boasts a high SEDBUK efficiency rating, ensuring it meets stringent environmental standards and minimizes carbon footprint.

It is engineered with components that ensure quiet operation, enhancing comfort within the home. The boiler is also equipped with a comprehensive range of safety features, including frost protection, which prevents damage during cold weather. Maintenance is streamlined through easy access to internal components, simplifying routine checks and servicing.

Overall, the Worcester LPG 25Si Compact 2014 Boiler combines compact design with high performance, making it a reliable and efficient choice for homeowners seeking a space-saving and environmentally friendly heating solution.

Worcester LPG 25Si Compact 2014 Boiler F.A.Q.

How do I reset my Worcester LPG 25Si Compact 2014 Boiler?

To reset your Worcester LPG 25Si Compact 2014 Boiler, locate the reset button on the front panel. Press and hold the button for 3-5 seconds until the reset light turns off. This indicates that the boiler has been reset successfully.

What should I do if my boiler is not heating water properly?

First, check the thermostat settings and ensure they are correct. If the problem persists, examine the pressure gauge to see if the pressure is within the recommended range (1.0-1.5 bar). If the issue is unresolved, it may require a professional inspection to address potential faults.

How often should I service my Worcester LPG 25Si Compact 2014 Boiler?

It is recommended to service your boiler annually to ensure it operates efficiently and safely. Regular maintenance helps to identify potential issues early and prolongs the life of the boiler.

Why is my boiler making unusual noises?

Unusual noises can be caused by air in the system, low water pressure, or a faulty pump. Bleeding the radiators can help remove trapped air. If noises persist, it may be necessary to call a qualified engineer to inspect the system.

How can I increase the water pressure in my boiler?

To increase the water pressure, locate the filling loop, usually found under the boiler. Open the valves slowly to allow water to enter the system until the pressure gauge reads between 1.0 and 1.5 bar. Close the valves once the desired pressure is reached.

What does the error code on my boiler display mean?

Consult the boiler's manual for a detailed explanation of error codes. Common codes include F1 for low water pressure and EA for ignition failure. Addressing these issues may require adjusting settings or contacting a service technician.

Can I use my Worcester LPG 25Si Compact 2014 Boiler during a power outage?

No, the boiler requires electricity to operate. During a power outage, the boiler will not function. Once power is restored, you may need to reset the boiler to resume normal operation.

How do I bleed the radiators connected to my boiler?

To bleed the radiators, turn off the heating system and wait for the radiators to cool. Use a radiator key to open the bleed valve slightly. Air will escape with a hissing sound, followed by water. Close the valve once the air is fully released.

What should I check if my boiler keeps turning off?

Check the thermostat settings, boiler pressure, and ensure there is a consistent gas supply. Frequent shutdowns might also indicate a faulty part, such as a pump or fan, which requires professional assessment.

Is it normal for the boiler to emit a slight smell?

While a new boiler might emit a slight smell during initial use due to burning off residues, a persistent smell may indicate a gas leak or other issues. If you notice an unusual smell, turn off the boiler and contact a qualified technician immediately.