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Condensing, totally premix, Low NOx, room sealed, wall hung gas boiler, with electronic ignition and modulating pump, – Isolation Protection IPX5D – also for outdoor installation Output: 24 kW 

• Patented boiler body in aluminium-silicon-magnesium alloy 
• Ignition and flame detection with just one electrode 
• Modulation ratio 1:8 
• Totally premixed burner with constant, fully electronic combustion ratio and modulating (both, the gas valve and the fan). 
• Automatic combustion feed-back through the electrode that controls, constantly, the combustion quality 
• Adjustment of output according to heating request 
• HWS “Hot Water Speed”: to eliminate the delay in D.H.W. production 
• D.H.W. stainless steel plate heat exchanger, with 12 plates (for mod. 24), 14 plates (for mod. 28-35) 
• Management of two heating zones, H/L temperature with different priority 
• Electronic anti-frost protection Operation guaranteed up to -15°C 
• Pump anti-jamming function 
• Pump over-run function 
• Safety limit thermostat 
• Flow temperature sensor 
• Return temperature sensor 
• D.H.W. temperature sensor 
• High efficiency modulating pump according to the heat request, managed by the electronic PCB, according to the ErP directive 
• C.H. 8 litres expansion vessel 
• Automatic air vent 
• Minimum water pressure switch 
• Pressure safety valve – 3 bar 
• Touch screen panel board with connection for diagnostics and programming through PC or portable programmer Panel board magnetic door 
• Manometer 
• Multifunction keyboard with silicon membrane 
• Burner and heat exchanger inspection openings with quick release 
• Paper mounting jig for prearrangement of hydraulic connections 
• Screw anchors for boiler fixing Siphon for condensate evacuation