K+

Wall hung, Low NOx (class 6), condensing gas boiler, with total premix burner - room sealed - electronic ignition and continuous modulation, with D.H.W. production, IPX5D, Certified ErP Class A

Output range: from 24 to 35 kW

• Patented Heat Exchanger / Condenser in Al / Si / Mg alloy;
• Electronic ignition and flame control through a single electrode
• Modulation ratio until 1: 8
• Total premix burner with constant combustion ratio with electropneumatic modulating gas valve and modulating fan
• Regulation of minimum output in heating mode
• Secondary plate heat exchanger in stainless steel, with 14 plates for the model 24 and 18 plates for models 28/35 kW, with the “thermal length” optimized for the condensation
• Quick DHW production, thanks to the increase of the plates number of the DHW heat exchanger
• HWS “Hot Water Speed”: to eliminate the delay in DHW production
• Two zones Management: high / low temperature with differentiated priority
• Electronic antifreeze protection
• Guaranteed operation up to -15°
• Pump anti-jamming function
• Pump overrun function
• Safety limit thermostat
• Flow temperature sensor
• Return temperature sensor
• DHW temperature sensor (only for model K+ “C”)
• High efficiency modulating pump directive conforming to the Erp 2015
• Expansion vessel of 8 litres capacity
• Automatic air vent
• Safety pressure switch against the lack of water
• Safety pressure relief valve at 3 bar
• Panel board with potentiometric temperature adjustment and functions selector equipped with display
• Manometer
• Burner inspection and heat exchanger cleaning systems through “quick release”closings
• Paper mounting template for the predisposition of hydraulic and gs connections
• Plastic screw anchors for fixing purposes.

Optional:
- Case of connections coverage
- Modulating a d On/Off thermostats
- Outer temperature sensor