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SCHOOLAIR-D-HV
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X-CUBE SCHOOLAIR-D-HV-EH   

Supply and extract air unit with electric air heater and rotary heat recovery unit, secondary air option, for installation below the ceiling slab

Ready-to-operate decentralised ventilation unit that provides good comfort levels and is used for the ventilation of internal spaces such as classrooms or conference rooms and day nurseries

  • Freely suspended installation or partially or fully integrated in a suspended ceiling
  • Acoustically optimised EC fans with low specific fan power, SFP = 0 to EN 16798-3
  • Rotary heat recovery unit (75% heat recovery efficiency) with moisture recovery in winter
  • Electric air heater with 3000 W max. heating capacity
  • Heat recovery all year round
  • Reduced fine dust and pollen contamination due to integral filters that conform to VDI 6022 – filter class ISO ePM1 60% and extract air ISO coarse 90%
  • Easy filter change, no tools required
  • Motorised shut-off dampers, normally closed (NC)
  • Installation without interruption of school operations

 Optional equipment and accessories

  • Modular control system FSL-CONTROL III, specially for decentralised ventilation systems

 


 

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Technical information

Function, Technical data, Quick sizing Specification text, Order code

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

Functional description

Decentralised supply and extract air units for room ventilation and for dissipating heat loads. An EC centrifugal fan takes in the outdoor air which then flows through the motorised shut-off damper and the outdoor air filter. The outdoor air then flows through the rotary heat recovery unit, which can be switched off if it is more energy efficient. If necessary, the air is heated by the electric air heater before it is discharged through the supply air grille towards the ceiling (Coanda effect) with a high propulsive force, yet without creating a draught.

The extract air first passes the extract air filter, then flows through the heat recovery unit, the extract air fan and the motorised shut-off damper before it is discharged to the outside as exhaust air. If the indoor air quality is sufficient, FSL-CONTROL III closes the outdoor air dampers and changes to secondary air operation, which is more energy efficient in any case. The control system compares the room air quality setpoint value to the actual value measured by the CO sensor and switches automatically between outdoor air and secondary air operation.

If the power fails, the outdoor air and exhaust air dampers are closed to ensure fire protection and frost protection and to avoid draughts. This is ensured by a capacitor in each actuator.

The supply air is discharged near the ceiling with a medium velocity. Rather than flowing immediately downwards, the air moves along the ceiling (Coanda effect) and reaches every corner; this ensures complete ventilation even of large rooms. Once the air reaches the opposite wall, it moves downwards and eventually through the entire space. The airflow reaching the occupied zone has a very low velocity and rises on heat sources, for example on people and devices. This is called natural convection. As a result, the air is exchanged primarily in these areas. The stale air is extracted under the ceiling and led to the outside.

Variants, Product details

  • VARIANTS
  • PRODUCT DETAILS




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For general question regarding products or services you can also call:
Tel.: +43 1 250 43-0| Fax: +43 1 250 43 34