同样采用ISO 10263 4:2009，该标准规定了一种统一的测试方法，用于测量在特定环境中运行的供暖、通风和空调系统对操作员环境温度的影响。可能无法确定操作员的完整气候环境。本文件规定了机器操作员外壳加热、通风和空调系统的最低性能水平。

Identically adopts ISO 10263 4:2009, which specifies a uniform test method for measuring the contribution to operator environmental temperature provided by a heating, ventilating and air conditioning system operating in a specific ambient environment. Might not determine the complete climatic environment of the operator. Minimum performance levels for the machines operator enclosure heating, ventilating and air conditioning systems are established in this document.