Contents

General checks:
Boiler runs straight to lockout
Boiler locks out at the start of a demand (Heating off overnight for example)
No domestic hot water
No central heating
- Contents
1 Key to symbols and safety instructions
- 1.1 Key to symbols
  - Warnings
  - Important information
  - Additional symbols
  - Abbreviations used in this manual
  - Read these instructions before starting any installation
- 1.2 General safety instructions
- 2 Installation regulations
  - 2.1 Complying with the building regulations
    - Installation
- 3 Appliance information
  - 3.1 General information
    - Standard package:
  - 3.2 Technical data
  - 3.3 Energy efficiency
  - 3.4 Layout and components - 18/25 System appliance shown
  - 3.5 Layout and components - 18/25 Regular appliance shown
- 4 Pre-Installation
  - 4.1 Cleaning primary systems
    - 4.1.1 Before cleaning the system:
    - 4.1.2 Flushing the system
    - 4.1.3 Inhibitor
      - Water treatment products
    - 4.1.4 Artificially softened water
  - 4.2 Mains supply
    - 4.2.1 Electrical supply
  - 4.3 Oil supply
    - 4.3.1 Single pipe gravity feed system:
      - Maximum pipe run for single pipe gravity fed system
    - 4.3.2 Double pipe sub-gravity feed system:
      - Maximum pipe run for double pipe sub-gravity fed system
    - 4.3.3 Single pipe suction lift with de-aerator:
      - Maximum pipe run for single pipe suction lift with de-aerator
    - 4.3.4 Pipework
    - 4.3.5 Boiler isolation valve
  - 4.4 Water systems and pipework
    - Primary system plastic pipework:
    - Primary system/connections/valves:
    - Open vent primary system (Regular only)
    - Fully pumped sealed primary system:
    - Filling primary sealed systems
  - 4.5 Condensate discharge
    - 4.5.1 Condensate pipe work
    - 4.5.2 Internal connections
    - 4.5.3 External connections
  - 4.6 Pressure relief pipework
  - 4.7 Boiler locations and clearances
    - Open flue model (CF)
    - Room sealed balanced flue models (RS)
    - Installation clearances
    - Service clearances
    - Maintenance clearances
    - Minimum air vent area (cm3) for appliances installed in compartments
    - Compartments
    - Venting compartments
    - Rooms containing a bath or shower
  - 4.8 Flue gas system considerations
    - 4.8.1 Combustion air quality
    - 4.8.2 Flue terminal positions
  - 4.9 Flue options
    - 4.9.1 Conventional flue (CF)
    - 4.9.2 Room sealed flue options
      - Calculating the flue length
      - Flue extension lengths
      - Flue terminal lengths
    - 4.10 plume management
      - Key to illustration
- 5 Installation
  - 5.1 Unpacking the boiler
    - Unpacking
  - 5.2 Pipework positions and flue opening
    - Safety
    - Pipework connections - Regular
    - Pipework connections - System
    - Flue centres
    - Flue opening
  - 5.3 Boiler installation
  - 5.4 Flue installation
    - 5.4.1 Flue damper installation
    - 5.4.2 Installation notes
  - 5.5 Combustion chamber (18/25 Regular shown)
  - 5.6 Pipework connections
    - Water connections
    - Return pipe connection
    - Oil supply connections
    - Condensate connection
    - Fire valve
  - 5.7 Oil burner and pump
    - Oil burner nozzle
    - Burner head adjustment
    - Oil pump - Single pipe connection
    - Oil pump - two pipe connection
  - 5.8 Refitting components
  - 5.9 Electrical
    - Access to 230V connections
    - 230V connections
    - Utility - 230V Standard wiring diagram
    - Utility System - 230V Standard wiring diagram
    - Utility - Remote 2 or 3 port valve control set using remote programmer
    - Utility System - Remote 2 or 3 port valve control set using remote programmer
- 6 Commissioning
  - 6.1 Pre-Commissioning checks - 18/25 Regular shown
  - 6.2 Filling the system
  - 6.3 Water treatment
    - Inhibitor (Central Heating)
    - Water treatment products
  - 6.4 Starting the appliance
    - 6.4.1 Single pipe gravity feed system:
    - 6.4.2 Double pipe sub-gravity feed systems and single pipe suction lift with de-aerator:
    - 6.4.3 Pump adjustments
    - 6.4.4 Burner head setting
    - 6.4.5 Boiler lockout indicator on:
    - 6.4.6 Combustion checks
      - Nominal boiler rating at normal operating temperature using Kerosene (Class C2)
    - 6.4.7 Central heating
  - 6.5 Finishing commissioning
    - 6.5.1 Hand over
    - 6.5.2 Appliance guarantee
      - Guarantee registration
- 7 Service and Spares
  - 7.1 Inspection and service - 18/25 Regular shown
    - Routine servicing
  - 7.2 Pre-service checks
  - 7.3 Service requirements
  - 7.4 Sealed system only
  - 7.5 Clean the burner
  - 7.6 Oil burner nozzle
  - 7.7 Pump filter
  - 7.8 External oil filter
  - 7.9 Combustion chamber - 18/25 Regular shown
  - 7.10 Oil supply system and tank
  - 7.11 Clean the boiler - Manifold access
  - 7.12 Re-commissioning the burner
  - 7.13 After service hand over
  - 7.14 Spares
- 8 Fault finding and diagnosis
  - 8.1 Burner functions
  - 8.2 Heating and hot water
  - 8.3 Boiler function
  - 8.4 Logic for the 535 SE/LD RDB control box
  - 8.5 Riello control box 12/18 model
    - 8.5.1 Last lockout memory feature
    - 8.5.3 Fault finding
    - 8.5.4 Flame sensing photocell 12/18 models
    - 8.5.5 Flame sensing photocell 18/25 and 25/32 models
  - 8.6 Oil supply vacuum testing
  - 8.7 Air pressure switch and flue overheat reset
  - 8.8 Air pressure switch connections
  - 8.9 Oil appliance commissioning checklist
  - 8.10 Service interval record

Worcester Greenstar Utility Regular 12/18 2022 Instruction Manual

Worcester Greenstar Danesmoor Utility Regular 12/18 2022 Boiler manual cover

Pages 64

Year 2022

Language(s)

of 64

Worcester Greenstar Danesmoor Utility Regular 12/18 2022 Boiler Specification

The Worcester Greenstar Danesmoor Utility Regular 12/18 2022 Boiler is a highly efficient oil-fired heating solution designed for utility room installations. This model is part of Worcester Bosch's Greenstar range, known for its reliability and performance. It features a compact design, making it suitable for homes with limited space. The boiler operates with a heating output of 12 to 18 kW, ideal for small to medium-sized properties requiring a consistent and efficient heating supply. Its efficiency rating meets modern standards, ensuring reduced energy consumption and lower heating bills. The boiler is engineered with advanced components, including a robust heat exchanger that enhances durability and heat transfer efficiency. It supports easy integration with existing heating systems, providing versatility in installation and operation. Safety is prioritized with built-in features such as frost protection and a comprehensive control system for optimal performance management. The Danesmoor Utility Regular 12/18 is compatible with a range of controls, offering flexibility in managing heating schedules and temperatures. Installation is straightforward with accessible connections and a user-friendly interface that simplifies maintenance and servicing. The design also includes noise reduction features for quiet operation, enhancing comfort within the home. Worcester Bosch's commitment to quality is reflected in the boiler's robust construction and the availability of comprehensive customer support and warranty options, ensuring long-term reliability and peace of mind for homeowners. This boiler is an excellent choice for those seeking a dependable, efficient, and easy-to-install heating solution.

Worcester Greenstar Danesmoor Utility Regular 12/18 2022 Boiler F.A.Q.

How do I reset the Worcester Greenstar Danesmoor Utility Regular 12/18 boiler?

To reset the boiler, locate the reset button on the control panel, press it, and hold for a few seconds until the reset process begins.

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

Check the thermostat settings, ensure the boiler has power, and verify that the water pressure is within the recommended range. If the problem persists, contact a professional technician.

How often should I service my Worcester Greenstar Danesmoor Utility Regular boiler?

It is recommended to service the boiler annually to ensure optimal performance and to prolong its lifespan.

What does a flashing red light on the boiler indicate?

A flashing red light typically indicates a fault condition. Refer to the user manual for specific error codes and troubleshooting steps, or contact a certified technician.

Can I use the boiler during a power outage?

No, the boiler requires electrical power to operate its controls and safety systems.

How do I adjust the temperature settings on the boiler?

Use the control panel to navigate the menu options and adjust the temperature setting to your desired level. Consult the user manual for detailed instructions.

What should I do if the boiler is leaking water?

Immediately turn off the water supply and power to the boiler, and contact a qualified heating engineer to inspect and repair the leak.

How can I improve the efficiency of my boiler?

Ensure regular maintenance, bleed the radiators, insulate pipes, and upgrade to a smart thermostat to improve efficiency.

What type of fuel is used by the Worcester Greenstar Danesmoor Utility Regular boiler?

This boiler model is designed to use heating oil as its fuel source.

Why does the boiler keep turning off?

Common reasons include a faulty thermostat, incorrect settings, low water pressure, or a blocked heat exchanger. A professional inspection may be necessary to diagnose the issue.