For rooms where the case-radiated noise of the unit is not sufficiently reduced by a false ceiling consideration must have adequate acoustic insulation (provided by others) on the fan and room ends
Za prostore, v katerih spuščeni strop ne omogoča zadostno zmanjšanje hrupa, ki ga oddaja ohišje enote, je potrebna ustrezna zvočna izolacija (ki jo zagotovijo drugi izvajalci) na koncih ventilatorja in prostora