Worcester Greenstar Danesmoor External System 12–32kW Oil Boiler

Worcester Greenstar Danesmoor External System

The Worcester Greenstar Danesmoor External System is an A-rated oil-fired system boiler designed for external installation where saving indoor space is important. The range provides three output configurations covering 12–32kW, making it suitable for a wide variety of residential heating applications.

Worcester Bosch lists the current 2022+ external system models as:

• Greenstar Danesmoor External System 12/18 – 18kW central-heating output
• Greenstar Danesmoor External System 18/25 – 25kW central-heating output
• Greenstar Danesmoor External System 25/32 – 32kW central-heating output

All three models are oil-fired and carry an A ErP heating efficiency rating.

External System Boiler Design

The Greenstar Danesmoor External System is designed to be installed outside the property, helping free up valuable space inside kitchens, utility rooms or plant areas.

Worcester Bosch highlights the range’s space-saving external installation, frost protection and suitability for a wide range of homes.

The weatherproof external casing has an IP45 ingress protection rating, helping protect the boiler against outdoor environmental conditions.

12–32kW Output Options

The Danesmoor External System range provides three output configurations:

Worcester Bosch specifies the respective models at 18kW, 25kW and 32kW central-heating output.

System Boiler for Central Heating and Hot Water

Unlike an oil combi boiler, the Greenstar Danesmoor External System is a system boiler. A separate hot-water cylinder is required to store domestic hot water.

The advantage of a system boiler is that major heating and hot-water system components are incorporated into the boiler, helping provide a neater installation compared with a traditional regular boiler arrangement.

This makes the Danesmoor External System a suitable option for properties requiring an external boiler combined with a cylinder-based hot-water system.

A-Rated Oil Boiler

Each current Danesmoor External System model carries an A ErP heating efficiency rating. Worcester Bosch specifies the range as an oil-fired central-heating solution with outputs from 12kW to 32kW.

The manufacturer literature lists seasonal space-heating efficiency at approximately:

• 12/18: 90%
• 18/25: 90%
• 25/32: 91%

Frost Protection for External Installation

Because the boiler is designed for outdoor installation, frost protection is an important feature.

Worcester Bosch specifically describes the Danesmoor External System as frost protected, helping the boiler operate reliably in harsh weather conditions when correctly installed.

Compact External Footprint

All three current external system models use the same basic cabinet dimensions:

• Height: 950mm
• Width: 565mm
• Depth: 780mm

This gives the range a consistent external footprint regardless of the selected output.

Flue Flexibility

The Danesmoor External System provides multiple flue configuration options to help accommodate different external installation requirements.

Worcester Bosch’s professional information lists high-level horizontal, rear-exit horizontal and side-exit configurations, with maximum horizontal flue lengths dependent on the selected arrangement and model.

The 2022+ range also incorporates plume-management options, with Worcester listing maximum horizontal flue lengths of up to 5m for the 12/18 and 18/25 configurations and 4m for the 25/32 in the relevant configuration.

Solar Compatible

The Greenstar Danesmoor External System is also listed by Worcester Bosch as solar compatible, providing an option for integration with compatible solar thermal heating and hot-water systems.

EasyControl Compatibility

Worcester Bosch lists EasyControl compatibility for the Danesmoor External System range, allowing compatible heating controls to be used as part of the overall heating installation.

Greenstar Danesmoor External System Specifications

Why Choose the Worcester Greenstar Danesmoor External System?

The Danesmoor External System is particularly useful where a property needs an oil-fired system boiler but there is limited internal space for the appliance.

Key benefits include:

• 12–32kW output range
• A-rated heating efficiency
• External installation
• Frost protection
• Weather-resistant IP45 casing
• Solar compatibility
• EasyControl compatibility
• Multiple output options
• Compact 950 × 565 × 780mm cabinet
• System-boiler configuration
• Multiple flue options

Worcester Bosch describes the range as flexible enough to suit many homes, with outputs covering 12kW to 32kW.

Frequently Asked Questions

What is the Worcester Greenstar Danesmoor External System?

It is an external oil-fired system boiler from Worcester Bosch’s Greenstar Danesmoor range. The current 2022+ range covers 12–32kW and is available in 12/18, 18/25 and 25/32 configurations.

What outputs are available?

The range provides three central-heating outputs:

• 18kW
• 25kW
• 32kW

These correspond to the 12/18, 18/25 and 25/32 models respectively.

Is the Danesmoor External System a combi boiler?

No. It is a system boiler. A separate cylinder is required for storing domestic hot water.

Is it an oil boiler?

Yes. Worcester Bosch lists the Greenstar Danesmoor External System as an oil-fired boiler.

Can the Danesmoor System be installed outdoors?

Yes. It is specifically designed for external installation and features frost protection and a weather-resistant external casing.

What is the efficiency rating?

The current Greenstar Danesmoor External System models carry an A ErP heating efficiency rating.

What are the dimensions?

The current external system models measure approximately 950mm high × 565mm wide × 780mm deep.

Is it frost protected?

Yes. Worcester Bosch specifically identifies frost protection as a feature of the Danesmoor External range.

Is the Worcester Danesmoor External System solar compatible?

Yes. Worcester Bosch lists the range as solar compatible.

Is it compatible with Worcester EasyControl?

Yes. Worcester Bosch lists EasyControl compatibility for the current Danesmoor External System range.

Does it require a hot-water cylinder?

Yes. As a system boiler, it requires a separate cylinder for storing domestic hot water.

What is the difference between Danesmoor External System and Danesmoor System Utility?

The External System range is designed specifically for outdoor installation and measures 950 × 565 × 780mm. The System Utility range is a much narrower boiler designed for utility-room or similar installation and measures 855 × 370 × 600mm.

Is this suitable for European heating projects?

The Worcester Greenstar Danesmoor External System is an oil-fired heating product that can be supplied through Euro Fuel Supply for European customers, subject to product availability, installation requirements and delivery location.