ellet boiler ThermoFLUX Pelling ECO 50 with 47 kW nominal heat output

The ThermoFLUX Pelling ECO 50 is a water-bearing pellet boiler for higher heating loads in residential buildings, apartment buildings, or commercial properties. Although the model is designated 50, the documented nominal heat output is 47 kW at a partial load of 15.7 kW. The boiler is designed for operation with wood pellets and features integrated controls and a flame temperature sensor.{index=0} : contentReference[oaicite:1]{index=1}

Highlights/Advantages

• ⭐ Pellet boiler with a nominal heat output of 47 kW and a partial load output of 15.7 kW for larger water-based heating systems. :contentReference[oaicite:2]{index=2}
• ⭐ Class 5 boilers according to EN 303-5:2012 with documented efficiency values ​​of 91% to 91.4%. :contentReference[oaicite:3]{index=3} : contentReference[oaicite:4]{index=4}
• ⭐ Integrated control system with flame temperature sensor and 10 power levels for load-dependent adjustment. :contentReference[oaicite:5]{index=5}
• ⭐ Flow and return in 5/4" as well as a 120 mm diameter flue pipe connection for hydraulic integration into conventional heating systems. :contentReference[oaicite:6]{index=6}
• ⭐ Two buffer sensors are included in the scope of delivery of the controller; a buffer storage tank is expressly recommended in the manual.

Area of ​​application & Target audience

The boiler is suitable for water-based heating systems with higher output requirements. Typical applications include larger single-family homes, multi-family homes, agricultural buildings, workshops, or smaller commercial units, provided the system design, heat demand, and chimney sizing are compatible. (The 5/)4"With its connections, 120-liter water capacity and intended integration into buffer storage solutions, the device is aimed at technically oriented operators, renovators and HVAC specialists.

Suitable for/Guidance for selection

The 47 kW output class is typically suitable for buildings and systems with significantly higher heat demand than standard single-family home solutions. It can be particularly advantageous where larger heating surfaces, multiple units, or a suitably sized buffer storage tank are required. This classification serves only as a preliminary guide and does not replace a professional heat load calculation or system planning.

Everyday benefits

In operation, the Pelling ECO 50 features automatic pellet ignition via a heating element. The control system adjusts the pellet feed and fan speed, enabling load-dependent operation across different power levels. Also relevant for everyday use are the adjustable boiler, buffer, and time programs, as well as the option for external heating requests, for example via a thermostat or control contact.

The manual specifies clear cleaning intervals for maintenance and operation: the combustion pot and combustion chamber approximately every 1 to 10 days, depending on pellet quality; the heat exchanger every 4 to 7 days; and the exhaust chamber about every six months. This ensures consistently clean and trouble-free operation.

Technology & equipment

According to the manual, the pellet boiler includes a combustion pot holder, heating element, combustion pot, combustion chamber, metering auger, flame temperature sensor, pellet hopper, temperature sensor, safety temperature limiter, flue gas fan, and control unit. Combustion is monitored by a flame temperature sensor; the control unit adjusts the pellet feed and fan speed to achieve the desired output level.{index=12}

The control unit is permanently mounted in the boiler lid and pre-wired. It also includes an external request function, timer programs, buffer minimum and maximum settings, and a power display.For the heating side, the flow and return are each in 5/4" executed.

Efficiency & Environment

The technical documentation for the Pelling ECO 50 model specifies an efficiency of 91% at partial load and 91.4% at nominal heat output. Measurements for dust, CO, NOx, and exhaust gas temperature are also documented. The boiler is classified as a Class 5 appliance and tested according to EN 303-5:2012. An energy efficiency class is not specified in the available documentation.

Only wood pellets are intended as fuel; the recommended fuel standard is PELET C1 according to EN 303-5:2012 Table 7 with a moisture content of less than 12%. This contributes to compliance with the documented performance and emission values.

compatibility & System integration

The Pelling ECO 50 is designed for water-based heating systems and can be integrated into systems with a buffer tank. The manual explicitly recommends installing a buffer tank; it also describes two buffer tank sensors that are taken into account by the control system. The pump switches on at 55 °C and off at 50 °C, provided the buffer tank temperature is not higher.

The documentation specifies a required delivery pressure of 12 Pa for the exhaust system, a flue pipe connection of Ø 120 mm, a chimney with a minimum inner diameter of 120 mm, and a minimum height of 5 m. The exhaust pipe must not be longer than 3 m.

In emergency mode, operation with firewood is also possible. However, this requires an additional grate, which is not included in the scope of delivery. For firewood operation, the manual requires a double thermal safety valve or connection to an open heating system.

Technical data

Scope of delivery

• Pellet boiler ThermoFLUX Pelling ECO
• Brush for cleaning the pipes with shovel
• Instructions for use
• Two buffer thermostats/buffer sensors for external demand

An additional grate for log burning is not included. :contentReference[oaicite:22]{index=22}

Accesories & System recommendation

Sensible system additions include a suitably sized buffer tank, a return temperature boost, safety components for the boiler circuit, and a compatible connection kit. If using firewood is planned, a suitable grate and a double thermal safety valve must also be considered. The manual explicitly recommends the buffer tank as an addition and requires additional safety equipment for firewood operation.

Assembly and safety instructions

Assembly, electrical installation, and commissioning should be carried out exclusively by qualified professionals or authorized partners. According to the manual, safety components, hydraulic integration, chimney, and exhaust system must be professionally designed and installed in accordance with applicable regulations. Sufficient fresh air supply must be ensured for the boiler room; ventilation systems or extractor hoods are not permitted in the installation room.

The linked shop pages and product pages are on gemashop.de available.

FAQ