-10-SAFETY REGULATIONS AND PRECAUTIONS It is forbidden to make any modifications on the stove. Only the spare parts made by the manufacturer of the particularstove may be used.In the case there are flammable construction materials and objects with flammabilitydegree B, C1, C2 pursuant to STN 73 0823 near the stove and its fume duct, place the stove withthe relevant fume duct in a safe distance being minimally 1,000 mm in all directions, includingupwards. The distance may be reduced to half, but there must be construction and technicalmeasures made using the non-flammable, thermally insulating materials with the thickness of atleast 5 mm (shields, metal sheets with sufficient dimensions overlapping the contours offlammable objects from each side minimally by 150 mm and protruding upwards with its toparea minimally by 300 mm, with the sufficient flow of cooling air around the shields and metalsheets). The distance between the flammable object and the protecting board, the clean air gapmust be minimally 25 mm, in order to avoid the risk of fire.As long as there are the objects made from the materials with flammability degree C3 in theproximity of the stove and its fume duct, the safe distance must be increased to 1,500 mm. Thesame applies to the objects made of materials the flammability degree of which cannot besafely specified.In order to inform the consumer (user), we state the classification of building materials from thepoint of view of their flammability pursuant to STN 73 0823:Flammability degree A - INFLAMMABLE: Concrete, cement plaster, slag, etc.Flammability degree B - HARDLY FLAMMABLE: Boards made from inorganic matters with organicfillers - acumine, isomine, plasterboards Wood-cement boards - hereklith, velox, ligos, rajolit Polyvinylchloride - novodur, decorplast Boards made of mineral and glass fibresFlammability degree C1 - FLAMMABLE WITH DIFFICULTY: Hardwood - beech, oak Boards made from layered wood - plywood Boards made from inorganic matters with organicfillers - hobrex