Condensing, totally premix, Low NOx, room sealed, wall hung gas boiler, with electronic ignition and output modulation – Isolation protection degree IPX5D – also for outdoor installation
Boiler body in aluminium-silicon-magnesium alloy
Ignition and flame detection with just one electrode
Modulation ratio 1:8
Totally premixed burner with constant combustion ratio and modulating pneumatic gas valve and fan
Adjustment of output according to heating request
HWS “Hot Water Speed”: to eliminate the delay in D.H.W. production
Three way diverting valve
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 (only for KON ”C”)
High efficiency modulating pump, managed by the electronic PCB, according to the ErP directive 2015
Expansion vessel of 8 litres (10 litres for model 35 kW)
Automatic air vent
Minimum water pressure switch
Pressure safety valve - 3 bar
Panel board with display with functions selector, potentiometer for temperature adjustment and reset button
Manometer
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
- Covering for hydraulic connections
- On/Off or Modulating thermostats
- External temperature sensor