本欧洲标准规定了人身和财产安全的要求，提供了环境保护指南，并制定了制冷系统的操作、维护和维修程序以及制冷剂回收程序。 本欧洲标准中使用的术语“制冷系统”包括热泵。 欧洲标准第3部分适用于安装现场（厂房空间和服务）。它规定了现场的安全要求， 由于制冷系统及其辅助部件，可能需要，但不直接与之相连。 本标准适用于: a） 适用于各种尺寸的固定或移动式制冷系统，但特定产品标准（如ISO 13043）所涵盖的车辆空调系统除外； b） 二次冷却或加热系统； c） 制冷系统的位置； d） 在采用本标准后，如果零件和增加的部件在功能上不相同，则进行更换 在能力上。 使用非of中列出的制冷剂的系统！EN 378 1:2016+A1:2020”，本标准不包括附录E。 本标准不适用于储存中的货物。 本标准不适用于在其作为欧洲标准发布之日之前制造的制冷系统，但在发布后对系统进行的扩展和修改除外。 本标准适用于新的制冷系统、扩展或改造 已经存在的系统，对于现有的固定系统，正在转移到另一个站点并在另一个站点上运行。 本标准也适用于将系统转换为另一种制冷剂类型的情况，在这种情况下，应评估是否符合本标准第1部分至第4部分的相关条款。

This European Standard specifies the requirements for the safety of persons and property, provides guidance for the protection of the environment and establishes procedures for the operation, maintenance and repair of refrigerating systems and the recovery of refrigerants. The term “refrigerating system” used in this European Standard includes heat pumps. This Part 3 of the European Standard is applicable to the installation site (plant space and services). It specifies requirements on the site for safety, which may be needed because of, but not directly connected with, the refrigerating system and its ancillary components. This standard applies: a) to refrigerating systems, stationary or mobile, of all sizes except to vehicle air conditioning systems covered by a specific product standard e.g. ISO 13043; b) to secondary cooling or heating systems; c) to the location of the refrigerating systems; d) to replaced parts and added components after adoption of this standard if they are not identical in function and in the capacity. Systems using refrigerants other than those listed in of !EN 378 1:2016+A1:2020", Annex E are not covered by this standard. This standard does not apply to goods in storage. This standard is not applicable to refrigerating systems which were manufactured before the date of its publication as a European Standard except for extensions and modifications to the system which were implemented after publication. This standard is applicable to new refrigerating systems, extensions or modifications of already existing systems, and for existing stationary systems, being transferred to and operated on another site. This standard also applies in the case of the conversion of a system for another refrigerant type, in which case conformity with the relevant clauses of parts 1 to 4 of the standard shall be assessed.