Ключевые слова:
Air heaters, Convection heaters, Heaters, Heating equipment, Gas-powered devices, Domestic, Gas space heating, Classification systems, Assembling, Design, Access, Electrical components, Stability, Control devices, Safety devices, Conversion, Ignition systems (heat engineering), Burners, Fire safety, Equipment safety, Combustion products, Gases, Automatic control systems, Manual control systems, Chemical composition, Leak tests, Test specimens, Control samples, Performance testing, Mathematical calculations, Working range, Temperature, Efficiency, Testing conditions, Test equipment, Marking, Instructions for use