KON B

Wall hung, Low NOx, modulating and condensing gas boiler with totally premixed burner - room sealed type - electronic ignition - with D.H.W. production. through a 60 litres, stainless steel, “superfast” storage tank – Isolation degree IPX4D

Output: 28 kW

• Heat exchanger - Condenser in aluminium / silicon / magnesium
• Totally premixed burner with constant combustion ratio, with electro-pneumatic gas valve and modulating fan
• “Superfast” 60 litre storage tank in stainless steel, with diffuser system for the maximum efficiency, inspectable, with magnesium anode
• Integral hydraulic group composed from: - Modulating pump: for heating and DHW priority (storage tank loading) with system anti-jamming, endowed with integral automatic vent - Three way electric diverting valve for priority to the storage tank - Automatic differential bypass
• Modulation ratio 1:6,3
• Electronic panel board that can be translated in vertical to facilitate the electrical connections and the maintenance
• Inlet of on-off / modulating thermostat and external temperature sensor
• Ignition and ionization though just one electrode
• High efficiency pump, modulating according to the requested output, managed by the electronic PCB and conforming to the Erp Directive of 2015
• Safety valve 3 bar
• Safety limit thermostat
• Flow temperature sensor
• Return temperature sensor
• D.H.W. temperature sensor (in the storage tank)
• C.H. expansion vessel of 10 litres
• D.H.W. expansion vessel of 3 litres.
• Management of 2 zones: High / Low temperature with different priority
• Pump anti-jamming
• Post-circulation of the pump
• Anti-legionella disease
• Anti-fast function
• Special services for adjustment and calibration according to the rules in force
• Adjustment of maximum output in heating mode operation
• Visualization of the lockout for lack of flame and diagnostics with alphanumeric signalling of the anomalies through wide, multifunction, back-lighted LCD display (power save)
• Heating temperature adjustment: 30 - 85°C
• D.H.W. temperature adjustment: 25 - 65°C
• Antifreeze protection electronic device
• Siphon for condensate evacuation