Solar Thermal Systems Testing (EN 12976-2)

Scope: The Standard establishes test procedures for characterizing the performance of solar domestic water heating systems operated without auxiliary boosting, and for predicting annual performance in any given climatic and operating conditions. Specific test are:
Performance testing:
According to the ISO 9459-2 Standard (Input - Output Method)- Solar only system

• System performance curves
• System temperature increase curves
• Draw-off temperature profiles
• Mixing draw-off temperature profiles
• Storage tank heat-loss coefficient
• Annual system energy performance prediction
• Average system daily hot water prediction

According to the ISO 9459-5 Standard (Dynamic Method) - Solar only system & solar plus auxiliary system
Overheat temperature protection test
Pressure resistance test
Conformity testing
Energy Output prediction for any member of the Solar System family((ANNEX D, Solar Keymark System Families)