29Gas connectionThe installation of the cooker to Natural Gas or LP Gas must be carried out by a qualified gasengineer. Installer shall take due account of the provisions of the relevant British StandardsCode of Practice, the Gas Safety Regulations and the Building Standards (Scotland)(Consolidation) Regulations issued by the Scottish Development Department.Installation to Natural GasInstallation to Natural Gas must conform to the Code of Practice, etc. The supply pressurefor Natural Gas is 20 mbar.Installation to LP GasThis appliance must only be connected to LPG after an LPG conversion kit has been fitted,(see pages from 30 to 32).When operating on Butane gas a supply pressure of 28-30 mbar is required.When using Propane gas a supply pressure of 37 mbar is required.The installation must conform to the relevant British Standards.Warning: Only a qualified gas engineer, also with technical knowledge of electricity shouldinstall the cooker. He should observe the Regulations and Codes of Practice governing suchinstallation of gas cookers.Note: It is recommended that the gas connection to the cooker is installed with aflexible connecting tube made to BS 5386.Gas connectionThe gas supply must be connected to the gas inlet which is located at the left or the righthand rear of the appliance (see figure 24).The pipe do not cross the cooker. To screw the connecting tube operate with two spanners(see fig. 25).The unused end inlet pipe must be closed with the plug interposing the gasket.After connecting to the mains, check that the coupling are correctly sealed, usingsoapy solution, but never a flame.PlugFig. 24Fig. 25