PHAETHON automated pellet boilers are designed for domestic and corporate heating, as well as multi-seasonal domestic hot water heating. They meet all the requirements of the LVD, EMC and EN 303-5 class 5. They are characterized by high efficiency and reliability. The equipment is also available with a variant of pneumatic transport of pellets.
PHAETHON boilers provide comfortable heating by automatic burning of wood pellets conforming to BDS EN ISO 17225-2: 2014. The pellets are environmentally friendly and CO2-neutral, making heating costs lower compared to electricity, gas and natural gas. The ecoNET300 ecoNET300, which can work with each PHAETHON, allows online control, burning monitoring, and mobile applications.
Why PHAETHON is the best pellet boiler?
The European Union introduces environmental design and energy labeling criteria for biomass heating appliances.
Each PHAETHON boiler is provided to the user with its own Energy Efficiency Label Class A +, in accordance with the European Commission’s delegated EU Regulation 2015/1187 – Energy Labeling of Solid Fuel Boilers.
What does this mean for users?
- The ecodesign requirements for solid fuel boilers have been complied with;
- Lower energy consumption for heating;
- More money savings;
- Protection of the environment;
- Improving the quality of atmospheric air.
Guarantee of low heating costs!

Without the step and full boiler modulation, it allows for even more combustion and increases efficiency (> 93%). Possibility to use wood pellets of different quality. An impressive price / quality ratio.
What will be the results of the emissions tests?

Quietly, the results even cover the requirements that are expected to come in the future. The rotating burner combustion chamber provides a continuous combustion process, eliminating the need to frequently stop the combustion process for mechanical cleaning. This is a prerequisite for greater efficiency and better combustion emissions as there are no transient processes when the fuel is ignited after cleaning.
Nearly 30 years of experience in heating!

A combination of the most successful, tried and tested products in the company’s practice, such as a three-way boiler and a burner with a rotating combustion chamber. Security and reliability guaranteed by leading and proven suppliers of component parts.
How to turn the boiler on or off? How to change the settings? How to check the boiler settings from the workshop to do a diagnosis?

Full access to all features of the controller by using an Internet module. All service features are fully accessible by using it. Consumers can take advantage of the clearly visualized boiler history in the form of graphics.
Comfortable! Easy! Sure!

Automated boiler operation. Possibility to control all basic functions of central heating and domestic hot water. All components of the boiler are designed to provide easy and quick access during cleaning, servicing and maintenance. Fast and easy to transport. Modular boiler design allows easy disassembly when and where needed. Quick and easy settings, just in a few steps. Quality burning, with a small ash volume guaranteeing service life without manual cleaning (months of continuous operation).
Technical solutions in line with world trends – “state of the art”. Fire protection. Protection against malfunctions of fans. Option for 24-hour process monitoring and malfunction signaling.
and more...
- Automatic ignition;
- Automatic boiler operation – temperature control with universal thermostat or special remote control, touchscreen and built-in thermostat to ensure maximum thermal comfort and fuel economy;
- Modular hopper and the possibility of automatic fueling from another external tank by pneumatic transport;
- Fuzzy Logic of the combustion process, which reduces the number of work interruptions, fuel and electricity consumption and increases the quality of power modulation;
- Modular design of the controller – possible expansion of the control system by additional operation of three pumps (boiler pump, domestic hot water pump and mixing valve pump);
- Mechanized hand cleaning of the heat exchanger;
- Fresh air and flue gas fans are equipped with Hall sensors that increase the quality of power modulation, reliability and safety of the system;
- Steel three-piece construction allowing dynamic boiler operation.
The management ...
- Microprocessor module for control of boiler parameters, with attractive touch display, presenting suitable information about the operation of the facility, with menu in Bulgarian language;
- The new generation of controllers allows the boiler alone to calculate and apply an algorithm for the complete combustion of combustible material. The exact air / fuel ratio is made possible by temperature sensors, dosing screws and fans equipped with a Hall sensor that monitors the actual amount of air in relation to the fuel entering the combustion chamber and the flue gases;
- Ability to monitor the flue gas temperature;
- Ability to program the domestic hot water temperature in a weekly cycle;
- Adjustment of thermal power in a wide range;
- Ability to control outdoor temperature;
- Possibility to control a chimney blower that solves the problem of chimney draft and ensures safe operation of the facility;
- Remote control;
- Summer / winter function;
- Passwords to limit service access levels for service personnel;
- History of alarms and errors – Storing history of recent errors and alarms, including description, date of occurrence;
- Automatic start after voltage drop – the last settings are saved;
- Information on the amount of pellets in the hopper – graphic and audible information when there is no fuel;
- Storing system performance statistics – Possible performance monitoring and fuel economy reduction, monitoring of heating water temperature, burner power and fueling-time (optional when using EcoNET module over the Internet);
- Ability to program the required room temperatures in weekly cycle with ecoSTER panel (option);
- Opportunity to monitor the combustion process with lambda control (option).
Hybrid heating and cooling systems
Ekoterm Proekt continues to offer users complete system solutions through innovative hybrid systems that provide the opportunity to talk about “artificial intelligence” in heating and cooling. The heating boiler can be used to reach higher temperatures while the heat pump can provide low-temperature heating and cooling at reduced cost and significantly lower energy consumption. The hybrid heat pump will provide climate comfort as well as domestic hot water for every household. Thanks to the communication between the two heat sources, intelligent hybrid systems can help optimize operating costs, improve energy efficiency and reduce carbon dioxide emissions. At present, when we are increasingly aware of the need for fresh air and the protection of human health, give preference to the best for you and the environment!

With the purchase of a product from the Ekoterm Proekt distribution network, consumers receive not only a highly efficient, environmentally friendly and economical solution for home and industrial heating, but also a comprehensive service – installation, initial start-up, adjustment, monitoring, warranty and post warranty service.
More information about Ekoterm Proekt and the range of products offered can be obtained from the distribution network throughout the country, on the Internet www.greenecotherm.bg or on the company ‘s homepage in Facebook.
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