AYA AHDG6X/3 Manuel D'utilisation page 41

WALL MOUNTING INSTALLATION
Prepare for installation:
1. If you have an outlet to the outside, your cooker hood can be
connected as below picture by means of an extraction duct (enamel,
aluminum, flexible pipe or inflammable material with an interior
diameter of 150mm)
2. Before installation, turn the unit off and unplug it from the outlet.
3. The cooker hood should be placed at a distance of 65~75cm
above the cooking plane for best effect.
EN-11