DS EN 1458-2:2012 Domestic Direct Gas-Fired Tumble Dryers Of Types B22d And B23d, Of Nominal Heat Input Not Exceeding 6 Kw - Part 2: Rational Use Of Energy Defines the requirements and test methods for rational use of energy, including measurement of both gas and electrical energy consumption, of domestic direct gas-fired tumble dryers, of types B22D and