Project Description


  • Wide modulation ratio up to 1:10 better efficiency and noiseless operation
  • GAC (Gas Adaptive Control) system: combustion automatic control
  • High efficiency full modulating circulating pump
  • Vitrified enamelled stratified steel cylinder – 220 lt capacity – with coil exchanger for solar integration (mod. Solar)
  • Vitrified enamelled steel cylinder – 160 lt capacity – with single coil exchanger (mod. Combi)
  • Mixing system (1 high tempertature + 1 low temperature) available as optional
  • Solar hydraulic group supplied with the cylinder (pump, safety valve, flow rate regulator, air vent) (mod. Solar)
  • Solar expansion vessel supplied with the cylinder (mod. Solar)
  • DHW expansion vessel supplied with the cylinder (mod. Combi and mod. Solar)
  • Built-in exchanger – tank recirculation
  • Removable control panel for wall-hung installation with wide text display, regulation knob, menu selection buttons and back-lighting; supplied with the boiler
  • Outdoor sensor supplied with the boiler

Hydraulic system

3 way electric diverter valve
Stainless steel premixing burner
Stainless steel heat exchanger with sound
proofing composite casing
Stainless steel enhanced DHW exchanger to
ensure condensation also in DHW mode
220 lt thermal stratification cylinder made
of vitrified steel with solar integration
through coil exchanger
Modulating fan with electronic speed adjusting
Automatic by-pass
System to prevent pump and diverter valve
sticking operating every 24 hours
Heating circuit relief valve set at 3 bar
Cylinder relief valve set at 7 bar
Circulating pump for the cylinder
Cylinder expansion vessel 8 litres
Solar expansion vessel 18 litres
Solar hydraulic group (pump, safety valve,
flow rate regulator, air vent)
Thermostatic mixing valve on the DHW outlet
of the cylinder
Built-in sanitary recirculation option

Thermoregulation system

Built-in solar controller
(pump and two temperature sensors)
Built-in climatic regulation
Control of second low temperature zone option
Room sensor, central heating and sanitary
timers included in the control panel

Control system

Overheat limit thermostat for the water/flue
Hydraulic pressure switch to prevent boiler
operating in the event of low water
Safety NTC sensor against flues overheat
Electronic temperatures control by NTC sensors
Anti-legionella function
Full anti-frost device
Electronic thermometer
Heating circuit pressure gauge

Technical data