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