Keywords:
Water heaters, Testing conditions, Instructions for use, Leak tests, Instantaneous water heaters, Efficiency, Ignition systems (heat engineering), Gas-powered devices, Electrical safety, Chemical composition, Designations, Sanitary appliances, Calorific value, Heating equipment, Combustion products, Heaters, Conversion, Hot-water supply systems, Classification systems, Domestic, Performance, Formulae (mathematics), Performance testing, Specimen preparation, Safety devices, Marking, Test equipment, Controllers, Automatic control systems, Test specimens, Fitness for purpose, Gas valves, Temperature rise, Adjusting devices, Fire tests, Definitions, Gases, Fire safety, Endurance testing