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Decentral ventilation recuperator stiebel eltron VLR 70L Trend EU — capacity 20/30/40/49/70 m³/h
Decentral ventilation recuperator stiebel eltron VLR 70L Trend EU — capacity 20/30/40/49/70 m³/h is a wall-mounted local heat-recovery unit designed to provide controlled fresh air supply and exhaust in individual rooms. The unit recovers heat from outgoing air and transfers it to incoming air, reducing heating losses while maintaining indoor air quality. Available airflow settings of 20, 30, 40, 49 and 70 m³/h allow adaptation to different room sizes and ventilation needs. The device is intended for apartments, offices and renovation projects where centralized ventilation is not available.
The stiebel eltron VLR 70L Trend EU offers selectable airflow capacities to meet varying ventilation requirements and a compact wall-mounted design that simplifies installation in single rooms. Heat recovery reduces energy consumption for space heating by transferring thermal energy from exhaust to supply air. The unit provides continuous fresh-air supply and exhaust without the need for ductwork and is suitable for retrofit applications. Design and controls are optimized for straightforward operation and maintenance while maintaining low operating noise at typical settings.
Install the unit in an external wall following manufacturer guidelines and local building regulations, ensuring correct sealing and electrical connection. Select the appropriate airflow setting (20, 30, 40, 49 or 70 m³/h) according to room size and ventilation needs. The device operates continuously or intermittently depending on chosen control settings; regular visual inspection and periodic cleaning of accessible filters and external grilles are required to maintain performance. Refer to the official installation and user manual provided by the manufacturer for detailed commissioning, wiring and safety instructions.
Choose the airflow capacity based on room volume and occupancy: lower settings (20–30 m³/h) for small rooms or bedrooms, medium settings (40–49 m³/h) for living areas and small offices, and the highest setting (70 m³/h) for larger or more frequently occupied spaces. Perform scheduled filter checks and cleaning to ensure efficient heat recovery and indoor air quality. For retrofit installations, verify wall thickness and insulation to guarantee correct mounting and airtightness.
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