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Performance testing|Fire safety|Watertightness tests|Convection heaters|Gas space heating|Combustion products|Safety devices|Ignition systems (heat engineering)|Gas flow|Combustion|Scratch tests|Flow rates|Heat|Heaters|Commercial|Design|Flames|Safety valves|Temperature control|Artificial weathering tests|Gas valves|Air heaters|2nd family gases|Test equipment|Air|Performance|Marking|Automatic control systems|Industrial|Instructions for use|Classification systems|Burners|Testing conditions|Gas-powered devices|Warm-air heating|Temperature rise