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Commercial refrigeration
Certification manual
Certification Manual
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Technical Certification Rules

Scope of the programme

The programme scope covers Refrigerated Display Cabinets (RDC) intended to be used in retail applications and classified into the following sub-programmes:

  • Remote Refrigerated Display Cabinets (RRDC) using R744 (CO2).
  • Integral Refrigerated Display Cabinets (IRDC) equipped with air-cooled condensing unit using natural refrigerants or blends with GWP lower or equal to 150.
Exclusions: Cabinets with wooden parts that affect performance are excluded. Cabinets operated only with other fluids than R744 (CO2) are excluded too.

Definitions

Refrigerated Display Cabinet (RDC): Cabinet cooled by a refrigerating system which enables chilled and frozen foodstuff placed therein for display to be maintained within prescribed temperature limits.

Remote Refrigerated Display Cabinet (RRDC): Refrigerated Display Cabinet connected to a remote refrigerating unit.

Integral refrigerated Display Cabinets (IRDC): Refrigerated Display Cabinets with incorporated condensing unit which can be referred to as self-contained units and more precisely

  • “plug-in RDC” in case of an air-cooled condensing unit, this product type is covered by the IRDC sub-programme.
  • “semi-plug-in RDC” in case of a liquid-cooled condensing unit (e.g., water-loop system), this product type is not covered by the present certification scheme.

Product family:  Group of cabinets in accordance with the standard terminology Annex A of EN ISO 23953-1:2015

M-package temperature class: Classification of M-package temperature according to temperatures of warmest and coldest M-packages during the temperature test according to the table 1 of standard EN ISO 23953-2:2015.

Refrigeration Electrical energy Consumption (REC) [kWh/day]: According to EN ISO 23953-2:2015 chapter 5.3.6.3.3, calculated with the following formula:

RECRemote=(24-tdeft)x 𝛷24−𝑑𝑒𝑓𝑡 x(Tc-Tmrun)/(0.34xTmrun)

Direct Electrical Energy Consumption (DEC) with 12h lighting [kWh/day]: 

For Integral plug-in RDC, the DEC equals the TEC, as it includes the condensing unit energy consumption (5.3.5.2 of EN ISO 23953-2:2015).

For Remote RDC, DEC shall be measured as per chapter 5.3.5.3 of EN ISO 23953-2:2015.

TEC: for remote cabinets, TEC is the sum of REC and DEC

TECRemote = REC + DEC

For Integral cabinets equipped with air-cooled condensing unit (plug-in RDC), the TECplug-in is the summation of all electrical energy using components measured as per chapter 5.3.5.2 of EN ISO 23953-2:2015

Total Display Area (TDA) [m2]: in accordance with EN ISO 23953-2: 2015, annex A, by rounding all the terms of the formula to the second decimal place.

Energy Efficiency Index (EEI): According to regulation (EU) 2019/2024, the Energy Efficiency Index (EEI) means an index number for the relative energy efficiency of a refrigeration appliance with a direct sales function expressed in percentage [%] and rounded to the first decimal place. It is the ratio of AE [in kWh/a] and the reference SAE [in kWh/a] and is calculated as:

EEI=AE/SAE

Annual Energy Consumption (AE): According to regulation (EU) 2019/2024, the Annual Energy Consumption (AE) means the average daily energy consumption Edaily multiplied by 365 (days per year) expressed in kilowatt hour per year [kWh/a] and rounded to two decimal places.

AE=365×𝐸𝑑𝑎𝑖𝑙𝑦

Standard Annual Energy Consumption (SAE): According to regulation (EU) 2019/2024 the Standard Annual Energy Consumption (SAE) means the reference annual energy consumption of a refrigeration appliance with a direct sales function expressed in kilowatt hour per year [kWh/a] with all compartments having the same temperature class and rounded to two decimal places.

SAE= (𝑀+𝑁×𝑌)×365×𝐶×𝑃

Certified Characteristics

The following performance items are certified:

  • Warmest product temperature                                   (laboratory conditions
  • Coldest (chilled) product temperature                       (laboratory conditions)
  • Heat extraction (laboratory conditions)                      [kWh/24h]
  • Evaporating temperature                                           (laboratory conditions)
  • Direct Electrical energy Consumption DEC               [kWh/24h]
  • Refrigeration Electrical energy Consumption REC    [kWh/24h]
  • Total Electrical energy Consumption TEC                  [kWh/24h]
  • Total Display Area TDA                                               [m²]
  • Energy Efficiency Index EEI                                       (laboratory conditions)
  • M-package temperature
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