Country-specific obligations of the operator

Note that in some countries the volume flow routed back into the workspace may not exceed 50 % of the supply air to the installation room. With free room ventilation, a supply air flow of one times the room volume per hour can be assumed. This means an air exchange rate of one per hour (supply air flow [m³/h] = room volume [m³] × air exchange rate [1/h]).

For example, when operating the device in France, the cleaned air must be expelled from the building.