The minimum safety distance between the bottom of the hood and the top of the cooking hob must be between 65 cm – 75cms. For optimum suction. Smaller or Higher distances must be previously authorized by the manufacturer as it may affect the suction power of the chimney.
Many hoods can be used for both filtering and suction. When the filtering function is operating, i.e. with air recycle, carbon filters must be used. When the suction function is operating, i.e. exhausting the filtered air on the outside, a suitable compensation system must be used according to current standards in force. The diameter of the fume exhaust pipe must be the same or greater than the diameter of the hood pipe union. There must be sufficient ventilation in the room where the hood is installed, to allow the simultaneous use of other EN – 6 appliances that use gas or other fuel.