
1. Standard 46/90 requires that any premises where gas appliances are in use must be correctly ventilated. In the kitchen, the presence of an exhaust version hood guarantees this important aspect of safety: a specially designed piping system connected to the outside ensures a correct change of air.
2. If it is not possible to use piping to expel the sucked-in air, then a filter version model can be used instead.
In this case, standard 46/90 requires the installation of an electroventilator that can provide the necessary exchange of air with the outside.