WZA
School ventilation
Assembly, installation and operating instructions
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5
Construction and function
5.1
Overview
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Fig. 1: WZA at a glance
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Control
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Locking flap with spring return motor
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Outside air filter ISO ePM1>55 %
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Backward-curved EC radial fan
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Enthalpic heat exchanger with heat and humidity recovery
5.2
Brief description
The WZA is a decentralised ventilation unit for acoustically sensitive rooms, such as classrooms and seminar rooms. Other ap-
plications include nursery schools, conference/meeting rooms and similar types of room.
WZA ventilates according to the air quality. A comfortable climate is created in the occupied zone, thanks to its special air
outlet and the induction of secondary air. The preconditioned outside air enters the room as supply air through a mixed air
diffuser.
The control monitors and controls the air volume flows, temperatures, air quality, filters and operating times. Additional
parameters are available on request.
