制冷系统和热泵 安全和环境要求 第3部分：安装位置（ISO 5149-3:2014 和 ISO 5149-3:2014/Amd.1:2021 等同采用）

ISO 5149-3:2014 is applicable to the installation site (plant space and services). It specifies requirements for the site for safety, which could be needed because of, but not directly connected with, the refrigerating system and its ancillary components. ISO 5149-3:2014 is applicable to new refrigerating systems, extensions or modifications of existing systems, and for used systems being transferred to and operated on another site. It also applies in the case of the conversion of a system for another refrigerant.