DS EN 12309-2:2000 Gas-Fired Absorption And Adsorption Air-Conditioning And/Or Heat Pump Appliances With A Net Heat Input Not Exceeding 70 Kw - Part 2: Rational Use Of Energy Defines the requirements and methods of test for the rational use of energy of gas-fired absorption and adsorption air conditioning and/or heat pump appliances having a net heat input not exceeding 70