Ключевые слова:
Symbols, Flues, Marking, Performance testing, Gas space heating, Control devices, Thermal testing, Maintenance, Air heaters, Temperature, Equivalence, Equipment safety, Instructions for use, Overhead, Combustion, Conversion, Mathematical calculations, Safety measures, Multiple, Controllers, Air intakes, Radiant heaters, Testing conditions, Heaters, Industrial, Valves, Heating equipment, Gas-powered devices, Ignition, Flow rates, Test pressure, Gaseous fuels, Electrical equipment, Commercial, Classification systems, Flames, Burners, Temperature measurement, Gases, Packaging