EN 328 Standard Condition Ratings
According to EN 328 the following standard conditions are used: Refrigerants Air inlet temperature (°C) Evaporating Temperature (°C) SC1 10 0 SC2 0 -8 SC3 -18 -25 SC4 -25 -31 Liquids Air inlet temperature (°C) Liquid Temperature (°C) SC6 16 4 SC7 0 -10 Qualifying tests are conducted on one or two standard conditions based on the evaporating temperature range for which selection data are specified.