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AT 1200 HB(E/E2) EC
A
T 1200 HB E2 EC unit design
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1 – air dampers 2 – G4 supply filter 3 – F7 supply filter (option) 4 – preheater 5 – supply fan 6 – SETUP MODE button 7 – louver shutters
for adjusting supply air direction 8 – extract fan 9 – reheater 10 – control unit 11 – di
ff
erential pressure switch of the extract filter 12 – G4
extract filter 13 – di
ff
erential pressure switch of the supply filter 14 – terminal block for internal connections 15 – bypass damper 16 –
counter-flow heat exchanger
The unit is equipped with a service door for technical and maintenance operations. Opening the service door while the unit is running
will lead to its shut down. The unit design enables installation of a bypass duct with a bypass damper to route the intake air stream
without contacting the heat exchanger.
The unit is equipped with di
ff
erential pressure switches to control filter clogging.
Additional equipment for the unit is available on a separate order.
• Humidity sensor. The unit with an installed humidity sensor maintains a set indoor humidity level. As the extract air humidity rises
above the set point, the system automatically switches to the maximum speed. As the humidity drops down below the set point the
unit returns to the previous mode.
• CO
2
sensor. Measures the level of concentration of carbon dioxide in the room and generates a signal that controls the performance
of the fan. Air flow control based on CO
2
concentration is an e
ffi
cient energy saving solution.
• VOC sensor. Qualitative assessment of air saturation with contaminants (cigarette smoke, exhaled air, solvent and detergent vapours).
• The sensor sensitivity can be adjusted with regards to the expected maximum level of air pollution. Enables on-demand ventilation
which results in considerable energy savings as air is exchanged only upon reaching the preset level of pollution.
