Heating condensing boiler with innovative features. High-tech, maximum productivity technology. Central heating boiler CLAS ONE 30 RDC ARISTON 3301036 Working principle: natural gas Boiler type: two-circuit (heating + hot water) Combustion chamber type: closed - condensing Exhaust Principle: Forced Code: 3301036 Power: 30 kilowatts Warranty: 5 years Production: Italy Technical data Heating area: 160 - 240 mW Minimum / maximum power: 4.8 - 31.1 kW. Minimum / maximum gas consumption: 0.46 - 2.96 mW / h Hot water capacity (Δt 25 ° C): 17.4 l / min. Maximum energy efficiency (MCC): 109.6% Heating circuit temperature: 35-82 ° Hot water contour temperature: 36-60 ° C Power consumption: 114 W Max. Pressure in the system: 3 bar Expansion tank capacity: 8 L Protection type: IPX5D Dimensions (height / length / width): 770 х 400 х 315 mm Weight (kg): 32 Additional features Condensing technology ONE and thermoregulation devices increase the efficiency and productivity of the heating system up to A + class; The gas adaptation system ensures the efficiency of the heating boiler at a high level even when the gas pressure is variable; The new XtraTech ™ heat exchanger is Ariston's exclusive design and extremely reliable; Absolute comfort: Built-in smart features AUTO and COMFORT provide a comfortable and stable temperature in the home; Function AUTO - maximum comfort, energy efficiency and economy, based on automatic analysis of environmental conditions related to external devices and performance levels; Function COMFORT - faster delivery of hot water in two modes: COMFORT mode (hot water in 30 seconds) and COMFORT + mode (hot water in just 5 seconds); Large touch screen Simplified menu; Automatic adaptation of gas parameters; Compact design, convenient everywhere; Contact Ariston NET for additional accessories; Modulation range 1:10; Sound insulation panels and mufflers; Quality control at all stages of production. Made from the finest European components in Italy; The most convenient touch control and interface; Unified Communication Protocol BusBridgeNet®; 100% tested in real conditions: All Ariston boilers coming out of the conveyor are tested for efficiency, working capacity and sealing capacity; 100% designed for long-lasting operation: for maximum performance created from strong and durable materials.