Centralized ventilation unit ZL-S 250

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The ZL-S 250 flat central domestic ventilation unit with heat recovery is ideal for the controlled ventilation of residential buildings and flats up to 150 m² as well as meeting and waiting rooms for up to eight people. Degree of heat recovery 89 Flexible mounting horizontally or vertically on a wall and above a suspended ceiling Integrated heat exchanger utilises the heat from the extract air to temper the fresh supply air Clever functions such as preheating coil and summer bypass integrated as standardThe flat ZL-S 250 central domestic ventilation unit with heat recovery is ideal for controlled ventilation of residential buildings and apartments up to 150 m² as well as meeting and waiting rooms for up to eight people. The design of the central home ventilation system allows horizontal or vertical installation on the wall and also installation on a suspended ceiling. The ZL-S 250 is controlled via a separately ordered control panel. Thanks to efficient constant volume flow controlled EC fans with three fan stages, air volumes can be individually programmed for each stage. The ZL-S 250 central home ventilation system is particularly efficient thanks to heat recovery from the exhaust air with a cross-counterflow heat exchanger with a heat recovery efficiency of up to 90 %. It is equipped as standard with clever functions such as anti-icing protection with automatic defrosting, a comprehensive self-diagnosis system, exhaust air temperature monitoring to protect the residential unit from cooling down in winter and an integrated automatic summer bypass with adjustable switching temperature to interrupt heat recovery in summer.Connection voltage 1/N/PE ~230 V, 50 Hz