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

2025-04-16T12:24:43+02:00

Vendor: Thermoflux
Type: Pellet boiler
Price: 4495.00

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

Manufacturer | ThermoFLUX d.o.o.
Model | Pelling ECO 50
Product type | Pellet boiler
Nominal heat output | 47 kW
Part load | 15.7 kW
Efficiency at partial load/nominal heat output | 91%/91.4%
Electrical power consumption at nominal heat output | 410 W
Maximum electrical power consumption. | 420 W
Electrical power consumption in standby mode | 3 W
Voltage/Frequency | 230 V/50 Hz
Pre-protection | 6 A
boiler class | 5
Max. operating pressure | 3 bar
Maximum flow temperature | 80 °C
Min.Return temperature | 50 °C
Water content | 120 l
Pellet consumption | 3.5/11.1 kg/h
Pellet container | 110/185 kg
Weight | 392 kg
Wide boilers | 510 mm
Width with silo standard/maxi | 810/1010 mm
Height | 1385 mm
depth | 1098 mm
Flow/return connection height | 85/1415 mm
Flow/Return | 5/4" /5/4"
Flue pipe connection | Ø 120 mm
Height center of flue pipe connection | 1630 mm
Required delivery pressure | 12 Pa/0.12 mbar
Minimum supply air cross-section | 300 cm²
Emission sound pressure level | 50.3 dB(A)
Exhaust gas temperature at nominal heat output | 142 °C
Exhaust gas temperature at partial load | 91 °C
fuel | PELET C1 according to EN 303-5:2012 Table 7; water content less than 12%
Standard/Test | EN 303-5:2012
CE | Yes
Energy efficiency class | A+

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.

Suitable system components

Buffer storage

Pellet boiler overview

Thermoflux Pelling Eco connection package without log grate

Worm motor for Thermoflux Pelling Eco 35/50

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

FAQ

Is the ThermoFLUX Pelling ECO 50 a pure pellet boiler?

Yes, the boiler is primarily designed for wood pellets. Emergency operation with logs is possible according to the manual, but this requires additional accessories and special safety regulations apply.{index=26}

What is the actual performance of the model?

The model name is Pelling ECO 50. The technical documentation specifies a nominal heat output of 47 kW and a partial load output of 15.7 kW. :contentReference[oaicite:27]{index=27} : contentReference[oaicite:28]{index=28}

Is a buffer storage tank required?

The manual explicitly recommends installing a buffer tank. Additionally, the control system describes the integration of two buffer sensors. According to the manual, a buffer tank is mandatory when operating with logs.{index=29}

What connections does the boiler have?

The flow and return are each in 5/4" The flue pipe connection has a diameter of 120 mm. :contentReference[oaicite:30]{index=30}

What requirements apply to the chimney?

The documentation requires a chimney with a minimum inner diameter of 120 mm and a minimum height of 5 m. It also specifies a minimum draft of 12 Pa; the flue pipe must not exceed 3 m in length. :contentReference[oaicite:31]{index=31} : contentReference[oaicite:32]{index=32}

How complicated is the cleaning process?

Depending on the pellet quality, the combustion pot and combustion chamber should be cleaned approximately every 1 to 10 days. The manual specifies cleaning the heat exchanger every 4 to 7 days and the exhaust chamber approximately every six months.{index=33}

Which electrical data are relevant?

The boiler operates on 230 V and 50 Hz. The documentation specifies an electrical power consumption of 410 W at nominal heat output, a maximum of 420 W, and a 6 A fuse. :contentReference[oaicite:34]{index=34} : contentReference[oaicite:35]{index=35}

Is there any information regarding the warranty?

According to the manual, the warranty is 5 years on the boiler body and 2 years on electrical components such as the control unit, motor, fan, and heating element. The terms and conditions of the importer or dealer, as well as proper installation and commissioning, are decisive.{index=36}