ErP Directive 2009/125 for split air conditioning systems
The new regulation have been adopted by the European Parliament to achieve the goals to reduce the power consumption in Europe related to air conditioning business and other home appliance as well as air-to-water heatpump, air handling, ventilation etc.
With its strategic plan called “20/20/20”, Europe aims to reduce the CO2 emissions by 20%, using 20% more renewable energy and consuming 20% less primary energy by 2020.
In order to facilitate the achievement of these objectives, EU issued the ErP directive that specifies the eco-design requirements for placing on the market the energy-using products.
For split air conditioners with power less than 12 kW,the minimum requirements are based on a new index of seasonal efficiency and on the sound power level as shown in the table below:
|A/C <6 kW||A/C 6-12 kW|
|Lw indoor max.||60 dB(A)||65 dB(A)|
|Lw outdoor max.||65 dB(A)||70 dB(A)|
Measuring the performance in real conditions
The European Union requires the application of objective metrics for measuring performance in order to establishthe minimum requirements and provide customers within formation regarding the performance of air conditioning useful for their purchase.
The methodology used up to 2012 and based on the efficiency rating (EER) – presents a significant difference between the predicted and actual performance. For this reason a more accurate method has beed designed: the seasonal efficiency ratio (SEER).
Among the most significant changes it includes the introduction of different operating temperatures for cooling and heating, the possibility to use energy both at partial load and full load and power usage in standby and off mode.
Considering that most systems operate mostly in partload conditions, the new methodology will allow to assess better the performance of a unit in real conditions.
New energy classification
The new energy classification is in force since 1 January 2013. The transition to the concept of seasonal efficiency involves the development of a completely new energylabel which shows the energy class based on the values of SEER and SCOP and the main characteristics of the product such as the sound power level of the indoor andoutdoor units.
Energy efficiency in heating is presented with three different values according to the climate where the product is installed. For the manufacturer of the productis mandatory to indicate the values for the Temperature climate (“Averge” heating value), those of the other two climates are optional. The data and energy efficiency classes are declared in accordance with EN14825.The energy class shown in the new label, both in cooling and in heating, can not be compared to the energy class that had the old energy label as the latter was based on specific indices (EER and COP) and not on seasonal indices SEER and SCOP.
The energy efficiency classes for split air conditioners are shown in the table below:
|Energy Efficiency Class||SEER||SCOP|
|A+++||SEER ≥ 8,50||SCOP ≥ 5,10|
|A++||6,10 ≤ SEER < 8,50||4,60 ≤ SCOP < 5,10|
|A+||5,60 ≤ SEER < 6,10||4,00 ≤ SCOP < 4,60|
|A||5,10 ≤ SEER < 5,60||3,40 ≤ SCOP < 4,00|
|B||4,60 ≤ SEER < 5,10||3,10 ≤ SCOP < 3,40|
|C||4,10 ≤ SEER < 4,60||2,80 ≤ SCOP < 3,10|
|D||3,60 ≤ SEER < 4,10||2,50 ≤ SCOP < 2,80|
|E||3,10 ≤ SEER < 3,60||2,20 ≤ SCOP < 2,50|
|F||2,60 ≤ SEER < 3,10||1,90 ≤ SCOP < 2,20|
|G||SEER < 2,60||SCOP < 1,90|