The ThermoFLUX Pelling ECO 50 is a water-based pellet boiler for larger heating loads in residential buildings, apartment buildings, or commercially used properties. The model bears the designation 50, but the documented nominal heat output is 47 kW with a partial load of 15.7 kW. The boiler is designed for operation with wood pellets and works with integrated control and a flame temperature sensor.
Highlights / Advantages
- ⭐ Pellet boiler with 47 kW nominal heat output and 15.7 kW partial load for larger water-based heating systems.
- ⭐ Class 5 boiler according to EN 303-5:2012 with documented efficiency values of 91% to 91.4%.
- ⭐ Integrated control with flame temperature sensor and 10 power levels for load-dependent adjustment.
- ⭐ Flow and return connections in 5/4" as well as flue pipe connection Ø 120 mm for hydraulic integration into classic heating systems. These are included in the scope of delivery of the control system; a buffer tank is expressly recommended by the manual.
Application Area & Target Group
The boiler is suitable for water-based heating systems with higher power requirements. Typical areas of application are larger single-family homes, apartment buildings, agricultural buildings, workshops, or smaller commercial units, provided that the system planning, heat demand, and chimney design are suitable. Due to the 5/4" connections, the 120-liter water content, and the intended integration into buffer tank solutions, the device is aimed at technically oriented operators, renovators, and HVAC specialist companies.
Suitable for / Selection Guidance
The 47 kW power class is typically suitable for buildings and systems with significantly higher heat demand than classic single-family home solutions. It can be particularly useful where larger heating surfaces, multiple usage units, or a correspondingly sized buffer tank are to be integrated. This classification serves only as initial guidance and does not replace a professional heat load calculation or system planning.
Everyday Benefits
In operation, the Pelling ECO 50 works with automatic pellet ignition via a heating cartridge. The control adjusts the pellet feed and fan speed, enabling load-dependent operation between different power levels. Also relevant for everyday use are the adjustable boiler, buffer, and time programs as well as the option for external heat demand, for example via thermostat or control contact.
For maintenance and operation, the manual specifies clear cleaning intervals: the burner pot and combustion chamber approximately every 1 to 10 days depending on pellet quality, the heat exchanger every 4 to 7 days, and the flue gas chamber approximately every six months. This supports consistently clean and trouble-free operation.
Technology & Equipment
According to the manual, the pellet boiler features a burner pot holder, heating cartridge, burner pot, combustion chamber, dosing screw, flame temperature sensor, pellet container, temperature sensor, safety temperature limiter, flue gas fan, and control system. Combustion is monitored via a flame temperature sensor; the control system adjusts the pellet feed and fan speed to achieve the desired output level.
The control is fixed in the boiler lid and pre-wired. Additionally, an external request, clock programs, buffer minimum and buffer maximum settings, and a power display are provided. For the heating side, the flow and return connections are each 5/4".
Efficiency & Environment
The technical documents specify an efficiency of 91% at partial load and 91.4% at nominal heat output for the Pelling ECO 50 model. Additionally, measured values for dust, CO, NOx, and flue gas temperature are 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 documents.
Only wood pellets are intended as fuel; the recommended fuel standard is PELET C1 according to EN 303-5:2012 Table 7 with a water content of less than 12%. This contributes to compliance with the documented performance and emission values.
Compatibility & System Integration
The Pelling ECO 50 is intended for water-based heating systems and can be integrated into systems with a buffer tank. The manual explicitly recommends the installation of a buffer tank; additionally, two buffer sensors are described, which are taken into account by the control system. The pump switches on at 55 °C and off at 50 °C, provided the buffer is not warmer.
For the flue gas system, the documentation specifies a required draft of 12 Pa, a flue pipe connection of Ø 120 mm, a chimney with at least 120 mm inner diameter and at least 5 m height. The flue pipe must not be longer than 3 m.
In emergency operation, log wood operation is also possible. However, this requires an additional grate that is not included in the scope of delivery. For log wood operation, the manual requires a double thermal drain safety device 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 |
| Partial 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 |
| Standby Power Consumption |
3 W |
| Voltage / Frequency |
230 V / 50 Hz |
| Fuse |
6 A |
| Boiler Class |
5 |
| Maximum Operating Pressure |
3 bar |
| Maximum Flow Temperature |
80 °C |
| Minimum Return Temperature |
50 °C |
| Water Content |
120 l |
| Pellet Consumption |
3.5 / 11.1 kg/h |
| Pellet Container |
110 / 185 kg |
| Weight |
392 kg |
| Boiler Width |
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 |
| Center height of flue pipe connection |
1630 mm |
| Required draft |
12 Pa / 0.12 mbar |
| Minimum combustion air cross-section |
300 cm² |
| Emission sound pressure level |
50.3 dB(A) |
| Flue gas temperature at rated heat output |
142 °C |
| Flue gas temperature at part 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
- Instruction manual
- Two buffer thermostats / buffer sensors for external demand
An additional grate for log wood operation is not included in the scope of delivery.
Accessories & system recommendation
Sensible system additions include a suitably sized buffer tank, return temperature control, safety components for the boiler circuit, and a coordinated connection package. If log wood operation is planned, the appropriate grate and a double thermal drain safety device must also be considered. The manual explicitly recommends the buffer tank as a useful addition and requires additional safety equipment for log wood operation.
Installation and safety instructions
Installation, electrical connection, and commissioning should only be carried out by qualified specialists or authorized partners. According to the manual, safety components, hydraulic integration, chimney, and flue gas routing must be properly designed and installed in accordance with applicable regulations. Adequate fresh air supply must be ensured for the boiler room; ventilation systems or range hoods in the installation room are not permitted.
Matching system components
The linked shop pages and product pages are available on gemashop.de.
FAQ
Is the ThermoFLUX Pelling ECO 50 a pure pellet boiler?
Yes, the boiler is primarily designed for wood pellets. Emergency operation with log wood is possible according to the manual, but additional accessories are required and special safety requirements apply.
What output does the model actually have?
The model designation is Pelling ECO 50. The technical documents state a rated heat output of 47 kW and a part load of 15.7 kW.
Is a buffer tank required?
The manual explicitly recommends the installation of a buffer tank. In addition, the control system describes the integration of two buffer sensors. For log wood operation, a buffer tank must be considered according to the manual.
What connections does the boiler have?
Flow and return are each 5/4". The flue pipe connection has a diameter of 120 mm.
What requirements apply to the chimney?
The documentation requires a chimney with at least 120 mm inner diameter and at least 5 m height. It also specifies a draft of at least 12 Pa; the flue pipe must not be longer than 3 m.
How involved is the cleaning?
Depending on the quality of the pellets, the burn pot and combustion chamber should be cleaned approximately every 1 to 10 days. The manual specifies the heat exchanger at 4 to 7 days, and the flue gas chamber about every six months.
Which electrical data are relevant?
The boiler operates at 230 V and 50 Hz. The documentation specifies 410 W electrical power consumption at rated heat output, a maximum of 420 W, and a fuse rating of 6 A.
Is there any information about 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 system, motor, fan, and heating element. The conditions of the importer or dealer, as well as proper installation and commissioning, are decisive.
