EN 89:1999

EN 89:1999 is a standard published by the European Committee for Standardization (CEN). Its full title is "Gas-fired storage water heaters for the production of domestic hot water". This standard covers: This European Standard defines the specifications and test methods for the construction, safety, rational use of energy and fitness for purpose, environment and classification and marking of gas-fired storage water heaters for domestic hot water uses, hereafter called "appliance". This standard applies to appliances : of types B11, B11BS, C11, C21 and C31; fitted with atmospheric burners; using one or more combustible gases corresponding to the three gas families and the pressures indicated in EN 437; of nominal heat input not exceeding 150 kW (net calorific value); using or not the water condensation heat in the combustion products; appliances whether subject to the water mains pressure or open-circuit. This standard does not contain all the requirements necessary for: - appliances fitted with a fan on the combustion circuit; - appliances intended to be connected to a mechanical means of evacuating the combustion products; - appliances which fulfill a dual role of space heating and heating water for domestic hot water use; - appliances with a combustion products discharge safety device other than that for type B11BS appliances; - appliances with electrical combustion products discharge orifice closure device downstream of the heat exchanger fitted to type B appliances and tested as an integral part of the appliance.

This European Standard defines the specifications and test methods for the construction, safety, rational use of energy and fitness for purpose, environment and classification and marking of gas-fired storage water heaters for domestic hot water uses, hereafter called "appliance". This standard applies to appliances : of types B11, B11BS, C11, C21 and C31; fitted with atmospheric burners; using one or more combustible gases corresponding to the three gas families and the pressures indicated in EN 437; of nominal heat input not exceeding 150 kW (net calorific value); using or not the water condensation heat in the combustion products; appliances whether subject to the water mains pressure or open-circuit. This standard does not contain all the requirements necessary for: - appliances fitted with a fan on the combustion circuit; - appliances intended to be connected to a mechanical means of evacuating the combustion products; - appliances which fulfill a dual role of space heating and heating water for domestic hot water use; - appliances with a combustion products discharge safety device other than that for type B11BS appliances; - appliances with electrical combustion products discharge orifice closure device downstream of the heat exchanger fitted to type B appliances and tested as an integral part of the appliance.

EN 89:1999 is classified under the following ICS (International Classification for Standards) categories: 91.140.65 - Water heating equipment. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 89:1999 has the following relationships with other standards: It is inter standard links to EN 89:2015, EN 437:2021, EN 1748-2-1:2004, EN 125:2022+A1:2024, EN 88-1:2022+A1:2023, prEN 15116, EN 1490:2000, EN 1015-7:1998, EN 586-3:2001, EN 14989-2:2007, EN 298:2022, EN 126:2025, EN 161:2022+A1:2025, EN 14037-2:2003, EN 448:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 89:1999 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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