INSTRUCTIONS FOR THE INSTALLER 52.INSTRUCTIONS FOR THEINSTALLER2.1. Warning to installersAll local and national regulations,including all those referring to national andEuropean standards, must be observedwhen installing the appliance.Installation of the appliance must beperformed by an authorised installer.An incorrectly installed appliance maylead to serious incidents (fires, creation ofharmful gases, deterioration of nearbyfixtures, etc.).Lacunza’s liability is limited to thesupply of the material and does not includeinstallation of the appliance.2.2. Room for installation2.2.1. Ventilation of the roomThe appliance needs to consumeoxygen (air) in order to work properly.Ensure a suitable air supply in the room inwhich the appliance is fitted. This quantityof oxygen is additional to the oxygen thatwe need in order to breathe (air renewal).In order to ensure the high quality ofthe air you breathe and to avoid potentialaccidents resulting from highconcentrations of the gases produced bycombustion (mainly carbon dioxide andcarbon monoxide), it is absolutely crucial toensure the suitable renewal of the air inthe room in which the appliance is fitted.the room must always have at least twopermanent grilles or openings to theexterior in order to renew the air (one forintake and the other for extraction).For the installation of its appliances,Lacunza recommends an additional sectionfor these openings. One of these two grillesmust be situated high up in the room (atless than 30 cm from the ceiling) and theother one low down (at less than 30 cmfrom the floor). Both grilles must openoutdoors in order to renew the air in theroom with fresh air.The minimum section that each of thesegrilles must have depends on the nominaloutput of the appliance in accordance withthe following table:Figure No.2 - Guideline indications forventilation grillesThe appliance must always be used withthe door(s) closed.In rooms equipped with ControlledMechanical Ventilation, the systemextracts and renews the ambient air; insuch cases, the room is at slightly lowpressure and it is necessary to install a non-closable outside-air inlet with a section ofat least 90 cm².Output of theappliance(kW)Minimumadditional sectionof each of thegrilles (cm2)P ≤ 10kW 7010 < P ≤ 15 9015 < P ≤ 20 12020 < P ≤ 25 15025 < P ≤ 30 18030 < P ≤ 35 210P > 35 240