XXL hot water tank, designed to match the System M indoor unit, with a usable capacity of 329 liters (nominal capacity 335 liters) and a large, double-wound smooth-tube heat exchanger with a surface area of 3.6 m2. Optimized for heat pump operation and high heat transfer performance through layered discharge. The maximum draw-off volume according to DIN EN 16147 is 460 liters (XXL draw-off cycle - water temperature of 55 °C). Steel storage tank with double corrosion protection through special enameling and two protective anodes (400 mm long). Minimal heat loss (68 W, 1.63 kW/24h) through fine-pored PUR insulation with excellent thermal insulation properties, corresponds to energy efficiency class B. Two 1.5 kW auxiliary electric heaters (pre-wired ready to plug in), vent valve and fill and drain tap pre-assembled under the paneling in the design of the indoor unit. Connections: cold and hot water R 1', heating flow and return G 1 ¼'AG, circulation connection R ¾' with grommet to prevent calcification and flange (DN 110, TK 150, 8 holes) for the installation of an additional electric heater (FLH) or as a cleaning opening. Max. operating pressure 10 bar, max. operating temperature 95 °C (hot water) or 110 °C (heating water). Temperature sensor NTC 10 pre-assembled and ready to plug in. Delivery includes connection plug for the additional electric heaters, 4 adjustable feet and two pre-assembled and insulated stainless steel corrugated flexible pipes for flat-sealing connection to the heat pump.
