本文件规定了与第一、第二和第三类气体燃料使用相关的试验气体、试验压力和器具类别。它作为器具具体标准中的参考文件。 本文件对燃烧气体燃料的器具试验所用气体和压力的使用提出了建议。 注:试验程序见相应的器具标准。本标准中规定的试验气体和试验压力原则上适用于所有类型的器具。 但是，在下列情况下，使用某些试验气体和试验压力可能不合适: -额定热输入大于300千瓦的器具； -现场施工器具； -最终设计受用户影响的器具； -用于高供给压力的器具（特别是直接使用饱和蒸汽压力）。 在这些情况下，特定设备标准可能会规定其他试验条件，以确定是否符合其要求。

This document specifies the test gases, test pressures and categories of appliances relative to the use of gaseous fuels of the first, second and third families. It serves as a reference document in the specific standards for appliances. The document makes recommendations for the use of the gases and pressures to be applied for the tests of appliances burning gaseous fuels. NOTE Procedures for tests are given in the corresponding appliance standards. The test gases and the test pressures specified in this standard are in principle intended to be used with all types of appliances. However, the use of some test gases and test pressures may not be appropriate in the following cases: - appliances with nominal heat input greater than 300 kW; - appliances constructed on site; - appliances in which the final design is influenced by the user; - appliances constructed for use with high supply pressures (notably direct use of the saturated vapour pressure). In these cases, the specific appliance standards may specify other test conditions in order to establish compliance with their requirements.