VECTIOSPOWER TM PJ Compact air-air rooftop units Ecodesign regulations The publication of regulation 2016/2281 establishes the requirements for Seasonal Energy Efficiency and brings together all the information concerning applicable equipment, including compact ROOFTOP enclosure units. The challenge of seasonal efficiency: the new ecodesign regulations stipulate that seasonal efficiency must be measured in cooling mode (SEER) and heating mode (SCOP). These coefficients guarantee a standardised assessment of the energy consumption of equipment by including seasonal variations in the measurements. Both these coefficients are calculated according to technical standard EN-14825 and compliance is mandatory for a product to obtain CE marking. Regulation 2016/2281 established minimum values for seasonal energy efficiency in Eta cooling (ŋ) y Eta heating (ŋs,h). s s,c s SEER and SCOP are therefore expressed in terms of primary energy and these make it possible to compare the energy efficiency of units which use different energy sources. These requirements apply in 2 phases, with an initial phase starting 1 January 2018, and a second phase with a higher efficiency requirement that will take effect on 1 January 2021. ROOFTOPS SEER ŋ (%) SCOP ŋs,h (%) s,c Tier 1 - 2018 3,00 117 2,95 115 Tier 2 - 2021 3,53 138 3,20 125 SEER As stipulated in Annex II paragraph 5 of Regulation 2016/2281, the technical data sheets (TDS) for CIAT units SCOP are available at www.ciat.com According to technical standard EN 14825, a reference weather for assessment of the seasonal efficiency is defined in cooling, as well as a partial load depending on the outdoor temperature. It is also establishes for heating, but in this case the standard defines three weathers (the average weather is used to compare with the minimum seasonal efficiency requirements of ecodesign regulations). Reference weather for SEER Reference weather for SCOP (average) 250 400 350 200 300 150 250 200 100 100 50 50 0 0 171819202122232425262728293031323334353637383940 -11-10-9-8-7-6-5-4-3-2-101 23456789101112131415 Outdoor temperature (ºC) Outdoor temperature (ºC) In addition, the bivalent temperature is defined in heating. This is the lowest outdoor temperature at which it is declared that the unit provides a capacity that allows to satisfy 100% of the heating load. Below this point, in the calculation of the SCOP, it is considered that the unit can still supply the capacity, but additional heating is required. Prated Back up heater A Back up heater C Tbiv B Tbiv A Tbiv C -10 -7 -4 2 7 12 16 Tdesign Outdoor air temperature (ºC) CATALOGUE 2021 265 265 Building load raey/sruoHraey / sroH Heat pu mp B (ovHeresaizt ep du)mp A (optHeat pump C (undersized) u150