Input to the calculation

Input to the calculations is the COP and capacity of the heat pump tested at four-five different temperature levels +12°C, +7°C, +2°C, -7°C and -15°C (-15°C is only required for the colder climate). The heat pump shall be tested in equivalence with standard EN 14511:2007, with the same test methods, test set up, uncertainty of measurements and the way of evaluating data. The heat pump shall be tested at part load to deliver the required heat load of the building at each temperature level. Instructions of how the heat pump shall be tested by means of part load and type of operation; fixed capacity units, staged capacity units and variable speed capacity units, are given in this method. The required part load for the building at the test points are given by: