www.blaubergventilatoren.de
Freshbox 100
6
• Warm stale extract air from the room flows to the unit, where it is filtered by the extract filter, then air flows through the heat exchanger
and is exhausted outside by the extract fan. Cold fresh air from outside flows into the unit, where it is cleaned by the supply filter.
Then filtered air flows through the heat exchanger and is moved to the room with the supply fan. Thermal energy of warm extract
air is transferred to clean intake fresh air from outside and warms it up. The air flows are fully separated. Heat recovery minimizes heat
losses, which reduces the cost of space heating in the cold season.
• The heat exchanger overheating protection is achieved by automatic supply fan speed reduction according to extract air sensor
readings. The extract fan runs at maximum speed.
• Temperature differences between supply and extract air flows in the units with polystyrene heat exchangers lead to condensate
formation. Condensate is collected in the drain pan and is removed outside by the drain pipes through the exhaust air duct.
Condensate is not forming in the units equipped with an enthalpy heat exchanger as moisture is transferred from one airflow to
another through the membrane.
• The louvre shutters open automatically when the motors are switched on and close when the motors are switched off.
*An additional extract spigot can be fitted to the unit to connect the exhaust air duct from additional premises, e.g. a bathroom. The
spigot is included in the delivery set.
Supply fan
Extract filter G4
Supply filter G4
Lock
Automatic supply
louvre shutters
Counter-flow heat exchanger
Temperature sensor
for heat exchanger freeze protection
F8 supply filter
Control unit
Exhaust fan
Automatic exhaust
louvre shutters
Control panel
Exhaust spigot*
Exhaust grille
Supply spigot
Exhaust air duct
Drain pan
End switch
Outdoor
air temperature sensor
Supply air
temperature sensor
UNIT DESIGN AND OPERATING PRINCIPLE
