Ключевые слова:
Design, Instructions for use, Leak tests, Ignition systems (heat engineering), Commercial, Performance testing, Air heaters, Temperature-rise limit, Circuits, Installation, Gas space heating, Control devices, Fire safety, Heaters, Gas valves, Flues, Heating equipment, Flames, Combustion products, Classification systems, Fire tests, Electrical equipment, Performance, Convection heaters, Ignition, Commissioning, Testing conditions, Gases, Cut-out devices, Conversion, Gas-powered devices, Safety measures, Safety devices, Marking