This article covers the safety guidelines for the BCHS by Boretti.
⚠ Warning: Failure to install the screws or fixing device in accordance with these instructions may result in electrical hazards. Wear gloves when carrying out installation and maintenance opera- tions. AIR VENT (for ducting versions) ! Prepare the hole and the air vent duct (150 mm diameter). ! Use a duct of the minimum indispensible length. ! Use a duct with as few elbows as possible (maximum elbow angle: 90°). ! Avoid drastic changes in the duct cross-section. ! Use a duct with an as smooth as possible inside. ! The duct must be made of certified material. ! Do not connect the hood to smoke exhaust ducts for the products of combustion (boilers, fireplaces, stoves, etc). ! For the air vents comply with the provisions laid down by the competent authorities. In addition, the air must not be evacuated through a hole in the wall unless specifically intended for this purpose. ! Fit air intakes in the room to prevent the hood from creating a negative pressure in the room (which must not exceed 0.04 mbar); if the hood is used at the same time as non-electrical equipment (gas-, oil- and charcoal-fired stoves, etc.) the exhaust gas may be sucked in by the heat source. FILTERING OR DUCTING VERSION? The hood may be in filtering or in ducting version. Decide from the outset which type is to be installed. For better efficiency, we recommend installing the hood in the ducting version (if possible). Ducting version The hood purifies the air and evacuates it to the outside through an exhaust duct (diameter 150 mm). Filtering vers version The hood purifies the air and recycles the clean air back into the room. For this version, the following are required: 1 air baffle, 1 reducer, 1 charcoal filter. The upper flue air evacuation slots must be positioned at the top.