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Info Tech pages 6 34-37 40-41 43-44 45 • Wide modulation ratio up to 1÷6: better and noiseless boiler working • Remote control with LCD display supplied with the boiler; it includes room thermostat, heating and sanitary timers functions • Mixed systems (low and high temperature) installation option • Stainless steel heat exchanger: reliability and long life • Connection to Baxi integrated solar systems option • Built-in climatic regulation (outdoor sensor available as optional) Stainless steel heat exchanger: reliability and long life Heating only models can be connected to Combi 80lt stainless steel AISI 316 L cylinder. The heat exchanger is provided with a soundproong composite casing. This makes the boiler quiet in all operation phases. The 80 litres storage allows a free standing installation and a big DHW production to satisfy different simultaneous demand Hydraulic system 3 way electric diverter valve Stainless steel AISI 316L premixing burner Stainless steel AISI 316L heat exchanger with soundproong composite casing Stainless steel enhanced DHW exchanger to ensure condensation also in DHW mode Modulating fan with electronic speed adjusting system Automatic by-pass Multi-speeds low energy pump with automatic air vent System to prevent pump and diverter valve sticking operating every 24 hours Central heating relief valve set at 3 bar Thermoregulation system Built-in climatic regulation (outdoor sensor available as optional) Control of multi-zones system option Room sensor, central heating and sanitary timers included in the control panel Control system Overheat limit thermostat for the water/ue exchanger Hydraulic pressure switch to prevent boiler operating in event of low water Safety NTC sensor against ues overheat Electronic temperatures control by NTC sensors Full anti-frost device Electronic thermometer Central heating pressure gauge Combi Maximum DHW heat input Maximum heating heat input Maximum DHW heat output Maximum heating heat output 80/60°C Maximum heating heat output 50/30°C Minimum heat output 80/60°C Minimum heat output 50/30°C Energetic efciency (92/42/CEE) Average efciency (DIN 4702-T8) Nominal efciency 80/60°C Nominal efciency 50/30°C Efciency 30% NOx class (EN 483) Minimum working temperature Expansion vessel capacity/pre-charge Heating temperature range DHW temperature range DHW production ΔT 25°C (1) kW kW kW kW kW kW kW 280 28,9 24,7 28 24 25,9 4,8 5,1 ++++ ++++ 109,8 109,8 97,6 97,6 105,1 105 107,5 107,5 5 5 °C -5 -5 l/bar 8/0,5 8/0,5 °C 20/80 20/80 °C 35/60 35/60 l/min 13,8 16,1 % % % % Minimum capacity DHW ow rate l/min Minimum pressure DHW circuit bar Maximum pressure heating circuit bar Maximum pressure DHW circuit bar Coaxial ue system Ø 60/100 max length m Dual ue system Ø 80 max length m Maximum ue mass ow rate kg/s Minimum ue mass ow rate kg/s Maximum ue temperature °C Dimensions (h x w x d) Net weight Gas type Power consumption Grade of protection 240 24,7 20,5 24 20 21,6 4 4,3 mm kg W 2 0,15 3 8 10 80 0,012 0,002 73 44,5 150 IPX5D 2 0,15 3 8 10 80 0,014 0,002 75 Heating onlyV 330 34 28,9 33 28 30,3 5,6 6,1 1.120 12,4 12 13 2* 2,2* 1.240 24,7 24 25,9 4,8 5,1 1.280 28,9 28 30,3 5,6 6,1 ++++ 109,8 97,6 105 107,3 5 -5 10/0,5 20/80 35/60 18,9 ++++ 109,8 97,6 105,2 107,5 5 -5 8/0,5 20/80 35/60 - ++++ 109,8 97,6 105,1 107,5 5 -5 8/0,5 20/80 35/60 - ++++ 109,8 97,6 105 107,3 5 -5 10/0,5 20/80 35/60 - 2 0,15 3 8 10 80 0,016 0,003 75 3 10 80 0,006 0,001 73 3 10 80 0,012 0,002 73 3 10 80 0,014 0,003 70 45 46 150 IPX5D 155 IPX5D 760x450x345 46,5 44 Natural Gas/LPG 155 160 145 IPX5D IPX5D IPX5D 45,5 *Boiler working with Natural gas. In case of LPG convertion the minimum output is 3,9 kW (80/60°C) and 4,2 kW (50/30°C) (1) without ow restrictor V 8 Heating only models are connectable to combi 80 lt/UB-UB INOX 80/120 lt. See pages 31-32 for sanitary performance.