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The e2 models work according to the principle of the regenerative heat exchanger. The storage stone sits in the centre of the air flow of an EC axial fan. Through a reversing air flow, which is created by a targeted change in direction of the fan, the ceramic is charged with thermal energy from the room air and releases it back into the incoming outside air. This happens so efficiently that up to 96% of the heat energy contained in the air is recovered. The combination of e² and ego ensures 100% ventilation with heat recovery throughout the house and is ideal for KFW houses.Application area:- For living rooms without odours- Living rooms- Bedrooms- Common roomsTechnical data:- Voltage: 12 V SELV- Protection class: IP22- Switching interval in reverse mode: 70 sec.- Required core drill hole: ø 162 mm- Minimum wall thickness: 280 mm- Filter class: G3Required accessories:- Control- Installation wall sleeve- Internal cover- External bonnet- Delivery volume: 15 - 38 m³/h- Power consumption: 0.7 - 4 W- Heat recovery efficiency max: 94 %- Energy efficiency class: A- Sound pressure: 29 - 49 db(A)
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