Defro Epsilon F pellet boiler 25 kW with automatic. WT cleaning and ash removal

EPSILON F – Compact pellet boiler with central pellet burner

Product overview

The EPSILON F pellet boiler combines state-of-the-art technology with a compact design, thus offering a future-proof alternative to fossil fuels. Thanks to its high-quality components and innovative features, efficient and environmentally friendly operation is guaranteed.

The unit is available in various power outputs (10, 15, 20, 25 kW) and meets the highest energy efficiency standards within class A+. The pellet hopper volume can be optionally increased using the PLUS version.

High-quality equipment

Equipped with a central pellet burner and automatic heat exchanger cleaning, the focus is on an advanced operating concept that minimizes maintenance while maximizing efficiency. The integrated ash removal system supports continuous, trouble-free operation.

A BEG-compliant particle separator and the possibility of retrofitting a lambda probe ensure not only a particularly clean combustion process but also environmentally friendly use.

Innovative combustion technology

The EPSILON F pellet boiler utilizes state-of-the-art combustion technology – the TSS Twin Spark System, with its two alternately activated ignition elements, ensures reliable and efficient combustion. This results in optimal fuel utilization and consistently high energy output.

Further technical highlights such as vertical tube heat exchangers with turbulators and a strong induced draft flow rate guarantee that heating performance and safety are always in harmony.

Comfortable operation

The intuitive control via the APC Center touchscreen makes operating the boiler simple and user-friendly. The integrated control system regulates up to six pumps and two heating circuit mixers, enabling precise control of all processes.

A factory-installed internet module enhances ease of use and allows connection to modern remote control systems – ideal for users who want to keep track of things even from a distance.

Security and monitoring systems

A negative pressure sensor in the combustion chamber and a strong induced draft via the blower ensure that the necessary negative pressure is maintained at all times. In addition, a fill level sensor in the pellet hopper prevents the auger from operating empty, thus protecting the system.

These integrated safety features not only increase operational safety, but also contribute to the longevity and reliability of the boiler.

Energy efficiency and funding

With its high energy efficiency and innovative technology, the boiler not only ensures a cost-effective heat supply but also meets modern environmental requirements. This makes it an excellent choice from both an economic and an environmental perspective.

The possibility of receiving BEG funding underlines the commitment to promoting forward-looking and sustainable technologies.

Expansion options and accessories

In addition to the standard version, there is the option to expand the boiler with additional accessories. These include modules for communication (GSM, internet and radio modules) as well as additional control units such as various room thermostats.

The expandable PLUS version with an enlarged container also allows for a longer fuel reserve, further increasing the ease of use and flexibility of the system.

Technical data

• Energy efficiency class A+
  
• Boiler class 5
  
• Nominal heat output 25 kW
  
• Efficiency 90.8%
  
• Traction requirement 14 Pa
  
• Prescribed fuel: pellets
  
• Exhaust gas temperature 129 °C
  
• Exhaust gas mass flow 22 g/s
  
• Height 1290 mm
  
• Width 931 mm
  
• Depth 1040 mm
  
• Flue pipe connection 100 mm
  
• Weight 366.0 kg

Scope of delivery

• Pellet boiler Defro Epsilon F 25 kW
• Assembly & User manual

Download

• Product data sheet
• Dimensions
• Operating instructions APC controller
• Certificate Boiler Class 5
• EcoDesign certificate
• Certificate 15 kW (German)
• Certificate 25 kW (German)