44. The director shall set out specifications, subject to sections 42 and 43, for determination of the calorific power of gas.

‘energy from renewable energy sources’ means energy produced by plants using only renewable energy sources, as well as the share in terms of calorific value of energy produced from renewable energy sources in hybrid plants which also use conventional energy sources and it includes renewable electricity used for filling storage systems, but excludes electricity produced as a result of storage systems;

The active mode coefficient of performance SCOPon or active mode primary energy ratio SPERon shall be calculated on the basis of the part load for heating Ph(Tj), the supplementary capacity for heating sup(Tj) (if applicable) and the bin-specific coefficient of performance COPbin(Tj) or bin-specific primary energy ratio PERbin(Tj), weighted by the bin-hours for which the bin conditions apply, using the following conditions:

‘bin-specific coefficient of performance’ (COPbin(Tj )) or ‘bin-specific primary energy ratio’ (PERbin(Tj )) means the coefficient of performance of the heat pump space heater or heat pump combination heater using electricity, or primary energy ratio of the heat pump space heater or heat pump combination heater using fuel specific for every bin in a season, derived from the part load for heating, declared capacity for heating and declared coefficient of performance for specified bins and calculated for other bins by interpolation or extrapolation, corrected where necessary by the degradation coefficient;

the ability to choose and size the components in typical installation situations, including determining the typical values of the heat load of different buildings and for hot water production based on energy consumption, determining the capacity of the heat pump on the heat load for hot water production, on the storage mass of the building and on interruptible current supply; determine buffer tank component and its volume and integration of a second heating system.

‘energy from renewable energy sources’ means energy produced by plants using only renewable energy sources, as well as the share in terms of calorific value of energy produced from renewable energy sources in hybrid plants — which also use conventional energy sources; it includes renewable electricity used for filling storage systems, but excludes electricity produced as a result of storage systems;