The refrigeration system installed in the retail building uses CO2 only as refrigerant, which is a natural refrigerant.

The project is located in Italy and it seems that the EPA GreenChill’s silver-level store certification is available in the U.S. only.

I would like to understand how I can demonstrate the satisfaction of the following requirements of the Reference Guide for retail:

“Demonstrate a predicted store-wide annual refrigerant emissions rate of no more than 15%. Conduct leak testing using the procedures in GreenChill’s best practices guideline for leak tightness at installation.

Alternatively, stores with commercial refrigeration systems may provide proof of attainment of EPA GreenChill’s silver-level store certification for newly constructed stores.”

From https://www.epa.gov/sites/production/files/documents/GCStoreCert.pdf

To qualify for GreenChill's Silver-Level Store Certification, a store must meet the following requirements:

- The store must only use refrigerants with zero ozone-depleting potential; 

- The store must only use refrigerants that have been found acceptable by EPA's Significant New Alternatives Policy Program (SNAP) for use in retail food refrigeration end-uses; 

- The store must achieve an average HFC refrigerant charge equal to or less than 1.75 lbs of refrigerant per MBTU/hr. total evaporator heat load; and 

- The store must achieve a store-wide annual HFC refrigerant emissions rate of 15% or less. 

- All newly constructed stores must be leak tested at installation according to the standards in GreenChill’s Installation Leak Tightness Testing Guidelines

Question:

Since it uses CO2 only, if the refrigeration system is tested at installation according to the standards in GreenChill’s Installation Leak Tightness Testing Guidelines is the system compliant with the credit requirements, although it doesn’t have an official certification, because it is not located in the U.S.?

Best Regards