1.3.29flue cowldevice placed at the end of a flue designed to prevent the entry of rain and minimize the disturbing effect of wind while not hindering the discharge of flue gases1.3.30flue gasescombustion products plus all diluents and contaminants. These include, where applicable, excess air, dilution air, process air and waste products from the process1.3.31flue terminalpoint at which flue gases discharge from a flue1.3.32gasliquefied petroleum gasLP Gascombustible gas composed predominantly of any of the following hydrocarbons, or any combination of them, in the vapour phase: propane, propene (propylene), butane, butene (butylene)1.3.33gas consumptionrate of energy consumed by an appliance under specific conditions and usually expressed in megajoules per hour (Unit: MJ/h)1.3.34gas detectorelectronic device capable of indicating the presence of LP Gas at specified concentrations, which provides an audible or visual warningNote 1 to entry: For guidance on gas detectors, refer to AS/NZS 60079.29.2.1.3.35gas installationcombination of the following used or intended to be used in the supplying and utilization of gas, taken as separate items or as a whole: piping, fittings, components, appliances, flues, apparatus or other devices and associated requirements1.3.36gas loadtotal gas consumption of all downstream appliances1.3.37gas pressure regulatordevice that automatically regulates the outlet pressure of the gas passing through it to a predetermined value1.3.37.1automatic changeover regulatorcombination valve/gas pressure regulator, fitted to an LP Gas multiple-cylinder installation, which will automatically change over from a cylinder(s) in use to a reserve cylinder at a predetermined pressure1.3.37.2piping gas pressure regulatorgas pressure regulator installed in the piping to reduce the gas pressure to a section of piping1.3.37.3cylinder regulatorgas pressure regulator on a cylinder installation that is subjected to the gas pressure directly from the cylinder