Defro Calori 20 kW 5 class boiler

DEFRO Calori pellet boiler (automatic) 5th class, EcoDesign

RELEVANT INFORMATION

The pellet boiler of the 5th class of the DEFRO brand from the Calori line with a capacity of 20 kW, is an automatic boiler dedicated to heating small-sized areas. Due to its small size, it is an ideal stove for small boiler rooms.

DEFRO Calori 20 kW boiler will be a good solution for those who are looking for an inexpensive but efficient heating device with automatic pellet burner cleaning function. The unit is EcoDesign certified and has a Class 5 emission certificate.

The manufacturer provides the following warranty terms: 5 years for the tightness of the heat exchanger, 2 years for other components and efficient operation of the boiler.

ADDITIONAL INFORMATION

• 5 class according to 303-5:2012 standard
• Ecodesign certificate
• Fuel tank located above the heat exchanger
• Automatic boiler operation
• The ability to prepare hot water
• Simple operation and maintenance
• Horizontal flame exchanger
  
  

MAIN COMPONENTS OF THE SET

• APC K Slim Controller
• ADAPTIVE CONTROL
• PID function
• levelling feet
• Igniter
• Pellet burner with automatic cleaning function
  
  

CHARACTERISTICS OF DEFRO CALORI BOILER

• Highly efficient and effective pellet burner with automatic cleaning function.
• Reliable operation due to modulation of air blowing with "ADAPTIVE CONTROL" system.
• Low operating costs, high boiler efficiency, thanks to the boiler exchanger (body) with a horizontal multi-pass flame tube design using economizers.
• The special design of the heat exchanger allows easy and convenient cleaning of the ducts, making the boiler an appliance that is easy to maintain on a daily basis.
• The use of the advanced APC K SLIM controller provides simple and intuitive operation of the furnace and self-control of the controller.
  
  

FUNCTIONS OF THE APC K SLIM CONTROLLER

• Innovative ADAPTIVE CONTROL using turbine flow meter for optimal selection of fan and feeder parameters
• Controlling the igniter
• Operation based on PID control algorithm - calculation of blowing power based on boiler and flue gas temperature measured at the boiler outlet
• External feeder control
• Internal feeder control
• Blower fan control
• Controlling the cleaning grate
• Control of the central heating pump - central heating.
• Control of the domestic hot water pump - DHW.
• Smooth control of the mixing valve
• Controlling an auxiliary pump with the possibility of selecting the type of device (central heating pump, DHW pump, circulating pump, floor pump, overflow pump, boiler cleaning)
• Buffer handling
• Preview of the amount of fuel in the tank based on user calibration
• Software update via USB
• Built-in valve control module
• Valve weather control
• Weekly control
• Cooperation with room regulators with traditional (two-state) communication, e.g. ST-292v3 and equipped with RS communication, e.g. SPK Lux - cooperates only with regulators from DEFRO distribution. Room regulators are a separate purchase
• Possibility to connect ST-65 GSM module - allows to control some control functions with a cell phone (only and exclusively from DEFRO distribution) - option at extra charge
• Possibility to connect ST-505 Ethernet module or WIFI RS module - allows you to control functions, view parameters via the Internet (only from DEFRO distribution) - option at extra charge
• Possibility to connect two additional valve control modules (only from DEFRO distribution) - option at extra charge
• Possibility to connect an additional extractor fan control module (from DEFRO distribution only) - option at extra charge
• Photoresist (flame sensor that controls flame quality)
• It has thermal boiler temperature protection - STB sensor
• Has thermal burner protection
• Temperature sensor for central heating, DHW, valve, return, auxiliary, flue gas and outdoor temperature
  
  

PRIMARY ADVANTAGES

• Compact dimensions
• Heat exchanger made of certified steel
• High thermal efficiency (92.9 - 94.3%)
• APC K SLIM Controller
• ADAPTIVE CONTROL - control of boiler operation based on airflow through the exchanger
• Turbolizers to increase heat recovery from exhaust gases
• Fuel auto-ignition system
• Pellet burner with automatic cleaning function as standard
• Boiler suitable for installation in a closed system
• 5-year warranty for heat exchanger leakage, 2 years for other components and efficient boiler operation