EN 437:1993

EN 437:1993 is a standard published by the European Committee for Standardization (CEN). Its full title is "Test gases - Test pressures - Appliance categories". This standard covers: This standard specifies the test gases, test pressures and categories of appliances relative to the use of combustible gases of the first, second and third families. It serves as a reference document in the specific standards for appliances that fall within the scope of the Council Directive on the approximation of the laws of Member States concerning gas appliances. The standard makes recommendations for the use of the gases and pressures to be applied for the tests. The full procedure will be given in the corresponding appliance standards. Note: The test gases and the test pressures specified in this standard are in principle intended to be used with all the appliances in order to establish conformity with the corresponding standards. 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 determined 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 conditions of test in order to establish conformity with their requirements.

This standard specifies the test gases, test pressures and categories of appliances relative to the use of combustible gases of the first, second and third families. It serves as a reference document in the specific standards for appliances that fall within the scope of the Council Directive on the approximation of the laws of Member States concerning gas appliances. The standard makes recommendations for the use of the gases and pressures to be applied for the tests. The full procedure will be given in the corresponding appliance standards. Note: The test gases and the test pressures specified in this standard are in principle intended to be used with all the appliances in order to establish conformity with the corresponding standards. 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 determined 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 conditions of test in order to establish conformity with their requirements.

EN 437:1993 is classified under the following ICS (International Classification for Standards) categories: 91.140.40 - Gas supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 437:1993 has the following relationships with other standards: It is inter standard links to EN 437:2003, EN 50194-1:2009, EN 1266:2002, EN 497:1997, EN 26:1997/AC:1998, EN 732:1998, EN 13278:2003, EN 509:1999, EN 613:2000, EN 12864:2001, EN 1359:1998, EN 12186:2000, EN 449:2002+A1:2007, EN 437:1993/A1:1997, EN 437:1993/A2:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 437:1993 is associated with the following European legislation: EU Directives/Regulations: 2009/142/EC, 90/396/EEC; Standardization Mandates: M/BC/CEN/89/6. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

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