Technical Features Acquafun² LN P Model Gas: LPG Product code: 20213221 Energy Efficiency Domestic hot water energy efficiency class: A Domestic hot water load profile: M Domestic hot water energy efficiency (ηwh): 76.6% Daily gas consumption (Qfuel): 8168 kW/h Annual gas consumption (AFC): 1666 kW/h Internal sound power level (LWA): 56 dB Nitrogen oxide emissions (NOx): 30 mg/kWh Water Performance Minimum draw-off range: 3 litres/min Maximum draw-off range: 10.4 litres/min Minimum water temperature rise: 23.5°C Maximum water temperature rise: 48.8°C Gas Minimum/normal/maximum pressure: 0.3 / 2.0 / 10 bar Water connections: Ø 1/2” Nominal gas supply pressure (G20/G31): 20 / 37 mbar Gas connection: Ø 1/2” Flue gas temperature (G20/G31): 144 / 152°C Features Type: Open chamber Draught: Natural draught Ignition: 2 x 1.5 V batteries Flame control: Ionization Flame modulation: Proportional Hot water production Δt=30°C (G20/G31): 8.8 / 8.4 litres/min Nominal heat input (G20/G31): 21.5 / 21.5 kW Nominal heat output (G20/G31): 18.5 / 18.5 kW Dimensions Flue gas exhaust pipe diameter: 110 mm Dimensions (H×W×D): 636×350×225 mm Net weight: 12.7 kg General Features ACQUAFUN2 LN P New instantaneous gas water heater with open chamber and low NOx emissions Riello presents Acquafun² LN P, the new open-chamber instantaneous water heater, suitable for residential use. Acquafun² LN P is part of Riello's range of low-NOx emission products, providing excellent domestic hot water comfort in compliance with the latest European regulations for emission reduction. The product is available in 11 and 14 l/min sizes, in both natural gas and LPG versions, with dedicated codes.* Ease of installation and maintenance, along with ease of use for the end user, are the features that make Acquafun² LN P the ideal product for producing domestic hot water in residential settings. INTUITIVE AND EASY-TO-USE INTERFACE Acquafun² LN P has a very simple interface. Thanks to the knobs for adjusting the gas flow rate, on the left, and the water flow rate, on the right, it is possible to manage comfort simply and immediately. In the center of the interface, a small display instantly shows the hot water temperature and signals any error messages. Independent flame and water temperature control simplifies water temperature regulation and allows users to choose the temperature best suited to their needs. TECHNOLOGY AND BENEFITS Domestic hot water production of 11 and 14 liters/min with ΔT 25°C. Cooled burner to reduce NOx emissions that form during high-temperature combustion processes. Safety devices: flame ignition sensor, safety valve, limit thermostat, and flue gas thermostat. Electronic battery-powered ignition with pilot electrode. Automatic proportional power variation: the water heater is able to adapt flame modulation, and therefore gas consumption, to the required water withdrawals. Pressure regulator as standard: maintains the water heater's power stable regardless of any pressure variations that may occur in the gas network. Optimized thermal efficiency thanks to energy-saving combustion technology. Ignition even at low water pressure, down to 0.03 bar. Simple aesthetics that easily integrate into domestic environments combined with a compact design that makes installation quick and easy.