

Forced air ventilation system
A specially designed ventilation system for buildings or areas where it is necessary or required to have a forced air ventilation, in which the extracted air can be polluted.
What is a forced air ventilation system
A specially designed ventilation system for buildings or areas where it is necessary or required to have a forced ventilation, in which the extracted air is (normall) polluted, for example:
gasses of polluted air with organic solvents, paint overspray, and so on. Like in “Zone 2” area’s.
During the extraction of the polluted air (usually heated air in the cold season), from this lost heat we can recover at least 50-60% of heat (which is dependent on the outside temperature and humidity.)
Features
- min 50-60% heat recovery system with a cross heat-exchanger
- electric heating of the supply air
- programmable Day & Night (= economic mode) using a control panel
- motors driven by frequency inverters
- pocket filter system for exhaust- and intake air

Model | AKB 20 | AKB 60 | AKB 80 |
---|---|---|---|
Unit power supply | 3~400V | 3~400V | 3~400V |
Electric power heater | 20 kW | 60 kW | 80 kW |
Motor power | 2 x 0,75 kW | 2 x 2,2 kW | 2 x 3 kW |
max airflow | 2000 m³/h | 6000 m³/h | 8000 m³/h |
Min airflow | 1000 m³/h | 3000 m³/h | 4000 m³/h |
∆ T | 45ºC | 45ºC | 45ºC |
Insulation | mineral wool 20mm | mineral wool 20mm | mineral wool 20mm |
Back filter: exhaust | G4 | G4 | G4 |
Back filter: intake | G3 | G3 | G3 |
Dimensions: L | 1000 mm | 2100 mm | 3300 mm |
Dimensions: H | 1000 mm | 2000 mm | 3000 mm |
Dimensions: D | 800 mm | 1800 mm | 2500 mm |
Recovery efficiency | 50-70 % | 50-70 % | 50-70 % |
Plate heat exchanger | aluminium | aluminium | aluminium |
Weight | 480 kg | 600 kg | 750 kg |
example AKB 45 (max. airflow: 4500 m3/h)