Important instructionsIT-DROMEGA Please, read and understand the manual prior to anyinstallation. Please follow the instructions, especially those relating to thefollowing: the auxiliary securation of burner, the proper installation of turbulators, the removing of the film from the reflectors, the proper sealing of tubes, the proper setting of burners, the using of original spare parts (alu flex tube cannot be used), the prohibition on the drilling of expanded pieces, the using of only water as lubricant when the expansion pieces arejoined, the prohibition on sealing the combustion air openings of the LASsystem,The picture documentation of exhaust gas measurement and installation can befound at the end of the manual. After installing the heater, please, send us the completedinstallation record. Please, note that failure to send us thisrecord leads to voidance of the warranty.1