Application • This high quality integral system with reversible air source heat pump is suitable for heating, cooling, central ventilation and air purification in new buildings and family houses. • The system uses the natural refrigerant R290 for optimum environmental compatibility. • The combination with an external DHW cylinder allows customisation to individual domestic hot water demands. • The system is installed indoors. • Thanks to the compact design, compared to individual appliances, several square metres of space in the installation room are saved.

Convenience features • The all-in-one design satisfies the highest demands. • The integral unit is characterised by its very low operating noise, which is facilitated in part by the design casing with particularly good sound insulation. • High air quality thanks to efficient filtering of the outdoor air, the summer bypass and preheating of the supply air at low outside temperatures, as well as efficient heat recovery. • Easily understandable, self-explanatory operation via the integral touchscreen display or app. • The energy management system provides information about the system's energy consumption and the resulting costs. • Quick and reliable system start-up thanks to the commissioning wizard. • The refrigerant circuit of the air source heat pump is equipped with all the necessary safety equipment, such as the patented STIEBEL ELTRON cyclone refrigerant separator. • High flow temperatures of 75°C enable year-round DHW heating in exclusive heat pump operation.

Efficiency • Energy saving, optimised defrosting processes thanks to intelligent monitoring of the refrigerant circuit data. • Improved heat transfer due to the hydrophilic coating on the evaporator. • The exhaust air energy from mechanical ventilation is utilised for defrosting and for increasing efficiency in heat pump operation. • Highly efficient cross-countercurrent heat exchanger made from plastic with economical constant flow rate fans. • Outdoor air for mechanical ventilation is preheated by a refrigerant circuit supercooler. • The sum of all measures leads to highly efficient operation with lower energy costs all year round. • The integration of a PV system including manufacturer-independent PV system optimisation and dynamic electricity tariff optimisation for low consumption costs are possible options.

Service • The integral units can be easily connected to the internet via Ethernet. The STIEBEL ELTRON Servicewelt is used for remote maintenance and monitoring. The controller is also updated via the online connection.

Installation • Thanks to the ergonomic carrying concept and optimised dimensions, it's easy to transport the module to the installation room. • The connections for ventilation are on the top and for heating on the bottom left-hand side. • The electrical connection is facilitated by the readily accessible side connection panel with spring clamp technology. • The integral commissioning wizard supports the safe and simple commissioning of all functions when the integral system is started for the first time. • Due to the certified safety concept, there are no additional requirements for the installation room, despite R290. • If the integral unit is installed in a left corner of the room, the exhaust air routing can be diverted to the left side using an air diverter module (optional accessory).