Contents

General checks before calling a Service engineer
- User instructions & customer care guide
- Abbreviations
- 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 instructions
  - 2 General Information
    - 2.1 Energy efficiency
    - 2.2 Servicing
    - 2.3 User caution
  - 3 Using your boiler
    - 3.1 Controls
    - 3.2 Operating the boiler
      - 3.2.1 Switching the boiler on/off
      - 3.2.2 Setting central heating temperature
      - 3.2.3 Controlling central heating
        
        Turning the central heating off during the summer
      - 3.2.4 Setting the hot water temperature
      - 3.2.5 Domestic hot water (DHW)
      - 3.2.6 Eco mode
        
        Domestic hot water eco mode
        
        Selecting Eco mode
        
        Exit eco mode
      - 3.2.7 Frost protection
      - 3.2.8 System pressure
        
        Filling loop
  - 4 Maintenance
    - 4.1 Troubleshooting
      - Boiler alert state
      - Boiler reset
      - Boiler stops with no fault code
    - 4.2 Servicing
    - 4.3 Fault finding
    - 4.4 Maintaining your boiler
      - Maintenance tips
      - Use in hard water areas
  - 5 General information
    - 5.1 Ventilation information
      - Boiler location
      - Ventilation
      - Servicing clearances
    - 5.2 General notes
      - Central heating systems
      - Condensate drain
      - Clearances - Service
      - Room thermostat
      - Thermostatic radiator valves
      - Oil supply
  - 6 Energy saving
    - 6.1 Tips on energy saving
      - Room thermostats
      - New control systems
      - Radiators
      - Heating economically
      - Roof insulation
      - Window frames
      - Curtains
      - Draughts
  - 7 Guarantee
    - 7.1 Fault or breakdown
      - Boiler data label
    - 7.2 Guarantee registration
    - 7.3 Your guarantee
      - Guarantee registration

Worcester Heatslave 2 12/18 2018 User Instructions

Worcester Heatslave 2 12/18 2018 Boiler manual cover

Pages 16

Year 2018

Language(s)

of 16

Worcester Heatslave 2 12/18 2018 Boiler Specification

The Worcester Heatslave 2 12/18 boiler, introduced in 2018, is a high-efficiency oil-fired combi boiler designed for domestic use. It combines both central heating and hot water functions in a single unit, making it ideal for homes with limited space. The boiler boasts a compact and sleek design, facilitating easy installation and maintenance. It operates with a heat output range of 12 to 18 kW, catering to medium-sized homes with moderate heating and hot water demands.

Featuring advanced technology, the Heatslave 2 12/18 is equipped with a digital control system for precise temperature management, enhancing user comfort and energy efficiency. The boiler is compatible with a range of smart thermostats, enabling remote control and programming to optimize energy consumption. Its efficiency is further underscored by its SEDBUK A-rating, ensuring reduced fuel consumption and lower carbon emissions.

The Heatslave 2 12/18 incorporates a cross-firing burner for improved combustion performance, delivering consistent heat output while minimizing noise during operation. An integral expansion vessel and a high-efficiency pump are included, promoting reliability and reducing the risk of system failures. The boiler's durable stainless steel heat exchanger is designed to resist corrosion, extending the appliance's lifespan and maintaining efficiency over time.

Safety features include frost protection and a range of diagnostic functions to swiftly identify and resolve potential issues. The Worcester Heatslave 2 12/18 is also designed with ease of servicing in mind, featuring front access to all major components. Its innovative design and robust performance make it a popular choice for homeowners seeking a reliable and efficient heating solution.

Worcester Heatslave 2 12/18 2018 Boiler F.A.Q.

How do I reset my Worcester Heatslave 2 12/18 boiler?

To reset your Worcester Heatslave 2 12/18 boiler, locate the reset button on the control panel. Press and hold the button for a few seconds until the reset light turns off.

What should I do if my Worcester Heatslave 2 12/18 boiler is leaking water?

If your boiler is leaking water, first turn off the water supply and the boiler. Check for any loose connections or damaged pipes. If the issue persists, contact a professional technician for repair.

How can I improve the efficiency of my Worcester Heatslave 2 12/18 boiler?

To improve efficiency, regularly service the boiler, bleed radiators to remove air pockets, and ensure that the heating system is not obstructed by furniture or other objects.

Why is my Worcester Heatslave 2 12/18 boiler making unusual noises?

Unusual noises may indicate air trapped in the system, low water pressure, or a failing component. Bleed the radiators or consult a technician to diagnose and fix the issue.

How often should I service my Worcester Heatslave 2 12/18 boiler?

It is recommended to service your boiler annually to ensure it remains efficient, safe, and to extend its lifespan.

What should I do if the Worcester Heatslave 2 12/18 boiler does not ignite?

Check the fuel supply, ensure the thermostat is set correctly, and reset the boiler. If the problem persists, consult a qualified engineer.

Can I use a smart thermostat with my Worcester Heatslave 2 12/18 boiler?

Yes, the Worcester Heatslave 2 12/18 is compatible with various smart thermostats. Ensure proper installation and configuration for optimal performance.

What does a flashing light on my Worcester Heatslave 2 12/18 boiler mean?

A flashing light may indicate a fault or error in the system. Refer to the user manual for specific error codes or contact a professional for diagnosis.

How do I adjust the water pressure on my Worcester Heatslave 2 12/18 boiler?

Locate the filling loop and slowly open the valves to increase pressure. Monitor the pressure gauge and close the valves once the desired pressure is reached.

What maintenance tasks can I perform on my Worcester Heatslave 2 12/18 boiler?

Regularly check for leaks, ensure vents are clear, bleed radiators, and keep the area around the boiler clean. Annual professional servicing is also recommended.