T/DJPEC 0025-2022 Active

Main technical content: The main content of this standard includes scope, normative reference documents, terms and definitions, basic flammability of refrigerants, safety requirements for the production process, appendices, etc. In terms of technical indicators, it combines the basic flammability characteristics of refrigerants with the characteristics of constant temperature and humidity air conditioning units, and starts from the perspectives of combustion initiation and flame propagation mechanism. It sets requirements and norms from three aspects: reducing the risk of refrigerant leakage, reducing the risk of reaching the flammable concentration limit, and reducing the risk of encountering ignition sources. The observation perspective covers managers, designers, purchasers, manufacturers, installers, users, and maintainers. The implementation of this standard helps to develop and use constant temperature and humidity air conditioners and similar refrigeration and heating equipment using new-generation flammable refrigerants in a standardized and low-risk manner. This standard references the international standard "ISO 5149-2014 Refrigerating systems and heat pumps - Safety and environmental requirements" and the domestic standard "GB/T 9237-2017 Refrigeration systems and heat pumps - Safety and environmental requirements", enabling national standards to be truly implemented in specific fields and effectively implemented in enterprises. This group standard is easy to read, reasonable, scientific, standardized, and actionable within the same industry. Products manufactured according to this group standard are competitive, leading, and sustainable in both domestic and international markets.