The use of the INOX heat exchanger, the copper pipes, the brass fittings for mechanical tightening as well as the individual high-quality components give a homogeneous whole that contributes to the smooth operation of the boiler and its durability over time.
Its compact dimensions allow installation in places with limited available space. Its simple yet modern design helps it to integrate perfectly into any space.
The combination of the front and perimeter thermal insulation, the sound-absorbing funnel and the newly designed air/gas mixer ensure the boiler extremely low noise levels (<52dB at 100% of its operation) both during ignition and during of its operation.
The DIGITECH® SYSTEM displays the temperatures and boiler functions in the most easy-to-use and easy-to-read way, with large letters and icons. Ability to set the desired temperature per degree with great precision for economy. It has the ability to control: external sensors, solar panels, sensors for external boiler, autonomy valves and many additional components.
The DIGITECH® electronic board has an easy-to-read display. All information is given in large letters and icons so that the information is given quickly and easily. The design of the buttons combined with the color choice of the cover give a perfect final aesthetic result and make handling it an easy task.
DIGITECH® offers continuous control of operating parameters and quick identification of potential malfunctions through special fault indication codes. With the built-in memory function, you inform the technician about the latest malfunctions of the boiler, so everyone always has a picture of its operation.
The DIGITECH® electronic board allows us to connect the boiler with a multitude of digital accessories in order to adjust its operation, based on the needs of the installation. Accessories include temperature sensors, wireless or wired room thermostats, with OT+, with Wi-Fi, etc.
The components of the wall-mounted boiler are arranged in such a way that they are all easily accessible, for checking them and for any repairs that may arise, e.g.
-the closed expansion tank is on the side with the valve in front, for easy maintenance.
-the hydraulic connection of the closed expansion tank is at the top so that it can be easily replaced.
-the transformer is not part of the management board, as a result of which its replacement is done easily, quickly and at a very low cost in contrast to the replacement of the board that has the transformer built in, which is a time-consuming and costly process.
- all parts are connected with brass fittings, resulting in easy repair.
- the special sound-absorbing funnel helps reduce noise.
-all components are made of branded high-quality materials, eg Callefi.
specifications
Exhaust type: B23P, B33, C13, C33, C43, C53, C63, C83, C93
Energy efficiency 92/42/CEE: ****
Maximum nominal heating power: 75 kW
Minimum nominal heating power: 3.7 kW
Delivered thermal power - 60/80°C: 72.83kW
Minimum thermal power output - 60/80°C: 3.5kW
Delivered thermal power - 30/50°C: 79.35kW
Efficiency at 100% rated power 60/80°C: 97.1%
Efficiency at 100% rated power 30/50°C: 105.8%
Efficiency at 30% rated power - return 47°C: 99.1%
Efficiency at 30% rated power - return 30°C: 107.5%
Maximum combustion efficiency: 97.7%
Flue gas temperature at rated thermal output: 66.4°C
Flue gas temperature at minimum rated thermal output: 56.8°C
CO2 at rated thermal power - G20:9.3-9.1%
CO2 at minimum heat output - G20:9.0-8.8%
CO2 at rated thermal output - G30:11.3-11.1% (50kW) - 11.5 - 11.3%(25kW)
CO2 at minimum thermal power - G30:10.9-10.7% (50kW) - 10.75 - 10.65%(25kW)
CO2 at rated thermal output - G31:10.3-10.1% (50kW) - 10.4 - 10.2%(25kW)
CO2 at minimum thermal output - G31:9.9-9.7% (50kW) - 9.95 - 9.85%(25kW)
CO at rated heat output: 68ppm
Exhaust gas mass at rated thermal power: 22.19g/s (50kW)-11.02g/s (25kW)
Exhaust gas mass at minimum rated thermal power: 2.28g/s (50kW)-1.78g/s (25kW)
NOx class: 6
NOx weighted (0% O2) mg/kWh: 51(50kW)-37 (25kWh)
HEATING CIRCUIT
Adjustable heating temperature: 30-80/25-40°C
Maximum heating operating temperature: 80°C
Maximum heating operating pressure: 3bar
Minimum heating operating pressure: 0.3bar
Expansion tank: 4.6l
Dimensions W/W/H: 670/485/640mm
Weight: 67.4kg
HYDRAULIC CONNECTIONS
Departure 1"1/2
Return 1" 1/2
Gas 1"
EXHAUST GAS DISTRIBUTION CONNECTIONS
Maximum available fan pressure 100Pa (50kW)- 76 (25kW)
Minimum available fan pressure 30 Pa (50kW)- 4 (25kW)
Maximum lead length
60/100- Horizontal coax. 6m conductor (25kW)
Maximum lead length 80/125- Horizontal coax. 10m conductor (50kW)
Maximum lead length 80/80- Double vertical duct 40 Unit
Maximum lead length 60/100- Vertical coax. 6m conductor (25kW)
Maximum lead length 80/125- Vertical coax. 10m conductor (50kW)
ELECTRICAL CHARACTERISTICS
Voltage/frequency 230/50 V/Hz
Maximum absorbed power 186W
Degree of electrical protection IPX5D
GAS SUPPLY
Nominal supply pressure G20 : 20mbar
Maximum fan speed HEATING - G20: 247Hz (50kW) - 192Hz (25kW)
Minimum fan speed HEATING - G20: 53Hz (50kW) - 50Hz (25kW)
Fuel consumption - G20: 7.93m3/h
Nominal supply pressure G30 : 30mbar
Maximum fan speed HEATING - G30: 230Hz (50kW) - 180Hz (25kW)
Minimum fan speed HEATING - G30: 53Hz (50kW) - 50Hz (25kW)
Fuel consumption - G30: 5.91kg/h
Nominal supply pressure G31 : 37mbar
Maximum fan speed HEATING - G31: 240Hz (50kW) - 190Hz (25kW)
Minimum fan speed HEATING - G31: 53Hz (50kW) - 50Hz (25kW)
Fuel consumption - G31: 5.83kg/h
