Overview:

The new ecoTEC plus VMW has been revamped to achieve a higher level of efficiency - etas efficiency of 94% - while always ensuring maximum sanitary comfort and offering improved customer usability.

 

The most important development of this product is the IoniDetect feed gas sensing system, which in combination with ADA feed gas pressure balancing technology provide the most correct air/gas mix needed in order to achieve the best possible combustion.

 

IoniDetect combustion technology also allows the boiler to be operated with a gas mixture containing up to 20 percent hydrogen.

 

The modulation range has been improved and has been extended to a range of up to 1:9. These product innovations, skillfully orchestrated by advanced electronics, enable the boiler to fully adapt to the actual demands of the heating system and minimizing gas and power consumption.

 

Features:

• Appliance-side gas connection 15mm
• Heating supply/return connections on appliance side G 3/4
• Cold water/ACS connections on appliance side G 3/4
• Safety valve connection 15mm
• Condensate drain hose 19mm
• Air-flue duct connection 60/100mm
• Gas connection pressure, natural gas G20 2.0 kPa
• Gas connection pressure, liquid gas G31 3.7 kPa
• Max. gas flow rate referred to 15 °C and 1013 mbar, dry gas (domestic hot water production), G20 2.8 m³/h
• Max. gas flow rate referred to 15 °C and 1013 mbar, dry gas (domestic hot water production), G31 1.08 m³/h
• Max. gas flow rate referred to 15 °C and 1013 mbar, dry gas (heating mode), G20 2.8 m³/h
• Max. gas flow rate referred to 15 °C and 1013 mbar, dry gas (heating mode), G31 1.08 m³/h
• Flue gas temperature min. 35 degrees
• Flue gas temperature max. 85 degrees
• Approved construction type appliances B23, B33, B53(P), C13, C33, C43, C53, C83, C93
• NOx class 6
• Weighted NOx emission 39.5 mg/kW/h
• Weight (without packaging, without water) 34 kg
  
   

Technical data power/heat output G20:

• Rated heat output range at 50/30 °C 3.4 26.4 kW
• Rated heat output range at 80/60 °C 3.0 24.7 kW
• Max. heating heat output 25.5 kW
• Min. heating heat flow rate 3.2 kW
• Min. flue gas flow rate 1.49 g/s
• Flue gas flow rate max. 13.46 g/s
• Max heat output. DHW 25.7 kW
• DHW nominal heat output 26.5 kW
• Heating rated heat flow range 3.2 25.5 kW
• Heating control range 3.2 25.5 kW
• Efficiency at rated (stationary) heat flow rate at 50/30 °C 103.4%
• Efficiency at rated heat flow rate (stationary) at 80/60 °C 97.0 %
  
   

Technical data power/heat flow rate G31:

• Rated heat output range at 50/30 °C 5.4 26.4 kW
• Nominal heat output range at 80/60 °C 4.8 24.7 kW
• Max. heating heat input range 25.5 kW
• Min. heating heat flow rate 5.2 kW
• Min. flue gas flow rate 2.43 g/s
• Max. flue gas flow rate 13.26 g/s
• Max heat output. DHW 25.7 kW
• DHW nominal heat output 26.5 kW
• Heating rated heat flow range 5.2 25.5 kW
• Heating control range 5.2 25.5 kW
• Efficiency at rated heat flow rate (stationary) at 50/30 °C 103.4 %
• Efficiency at rated heat flow rate (stationary) at 80/60 °C 97.0%
  
   

Heating technical data:

• Flow temperature max. 85
• Flow temperature setting range (factory setting: 75 °C) 15 80 ?
• Max. operating pressure, heating 0.3 MPa (3.0 bar)
• Nominal circulating water flow rate, referred to ?T = 20 K 1,075 l/h
• Residual pump head for nominal circulating water flow rate 0.025 MPa (0.250 bar)
  
   

Technical data Domestic hot water:

• Start-up water flow rate 120 l/h
• Specific flow rate D (?T = 30 K) 12.6 l/min
• Min. required water pressure 0.03 1.0 MPa (0.30 10.0 bar)
• Max. allowable water pressure 0.07 MPa (0.70 bar)
• Domestic hot water temperature adjustment range 35 65
  
   

Electrical system technical data:

• Rated voltage / mains frequency 230 V / 50 Hz
• Allowable connection voltage 190 253 V
• Fuse 2A
• Max. electrical power input for heating mode 91W
• Max. electrical power consumption for domestic hot water mode 90W
• Standby power consumption < 2 W
• Type of protection IP X4 D