20/30404046 DC - BS EN 26. Gas-fired instantaneous water heaters for the production of domestic hot water

20/30404046 DC

BS EN 26. Gas-fired instantaneous water heaters for the production of domestic hot water

Status : Current, Draft for public comment   Published : January 2020



This European Standard defines the specifications and test methods concerning the construction, safety, rational use of energy and fitness for purpose, and also the classification and marking of gas-fired instantaneous water heaters for sanitary uses, hereafter called “water heaters”. This European Standard applies to water heaters: - of types AAS, B11, B11BS, B12, B12BS, B13, B13BS, B14, B22, B23, B32, B33, B44, B52, B53, C11, C12, C13, C21, C22, C23, C32, C33, C42, C43, C52, C53, C62, C63, C72, C73, C82and C83 according to CEN/TR 1749; - fitted with atmospheric burners; - equipped with atmospheric burners assisted by a fan for the supply of combustion air or evacuation of combustion products or fully premix burners; - using one or more combustible gases corresponding to the three gas families and at the pressures stated in accordance to EN 437; - of nominal heat input not exceeding 70 kW; - with an ignition burner or with direct ignition of the main burner. In this European Standard, the heat inputs are expressed in relation to the net calorific value (Hi). This European Standard does not contain all the requirements necessary for: - boiling water appliances; - appliances intended to be connected to a mechanical means of evacuating the combustion products; - appliances which fulfil a dual role of space heating and heating water for sanitary use; - appliances making use of the heat of condensation of the water contained in the combustion products; - water heaters of types B21, B31, B41, B42, B43 and B51. This European Standard only covers water heaters where the fan, if any, is an integral part of the appliance. This European Standard: - does not apply to appliances not intended to be connected to a flue when they are not fitted with an atmosphere sensing device; - takes account of the information given in Technical Report CEN/CR 1472:1994 with respect to marking. Type B appliances should be with a combustion products discharge safety device to comply with essential requirement 3.4.3 of the Gas Appliances Directive 2009/142/EC. In this European Standard, the appliance is identified as type B11BS. Appliances intended to be installed outdoors or in a room separate from inhabited rooms and provided with appropriate ventilation are not required to have this combustion products discharge safety device but, in this case, appropriate warnings on the packaging, and in the instructions should clearly define the limited authorized use for this type of appliance. In this European Standard, the appliance is identified as type B11. The main symbols used in this European Standard are summarized in Annex F.

Standard Number20/30404046 DC
TitleBS EN 26. Gas-fired instantaneous water heaters for the production of domestic hot water
StatusCurrent, Draft for public comment
Publication Date16 January 2020
Normative References(Required to achieve compliance to this standard)EN 1443:2003, EN ISO 228-1:2003, EN 13203-1:2015, EN ISO 9969:2016, EN 10088-1:2005, EN ISO 3166-1:2014, ISO 1817:2015, EN 10226-1:2004, ISO 6914:2013, EN 88-1:2011, EN 60335-1:2012, EN ISO 527-1:2012, ISO 301:2006, EN 1856-2:2009, ISO 815-1:2014, EN 60335-2-102:2016, EN ISO 527-2:2012, EN 298:2012, EN 14459:2015, ISO 2781:2008, ISO 7619-1:2010, EN 1856-1:2009, EN 126:2012, ISO 188:2011, EN 15036-1:2006, EN 14241-1:2013, EN 14471:2013, EN 1859:2009+A1:2013, ISO 262:1998, EN ISO 179-1:2010
Informative References(Provided for Information)EN ISO 8256, ISO 8256, CEN/CR 1472:1994, CEN CR 1404:1994, EN 15502-1:2012
International RelationshipsprEN 26
Draft Expiry Date11 March 2020
DescriptorsSpecimen preparation, Temperature rise, Automatic control systems, Gases, Performance, Chemical composition, Test equipment, Fire tests, Efficiency, Conversion, Calorific value, Domestic, Test specimens, Gas-powered devices, Hot-water supply systems, Leak tests, Gas valves, Sanitary appliances, Marking, Testing conditions, Endurance testing, Instantaneous water heaters, Designations, Ignition systems (heat engineering), Electrical safety, Safety devices, Adjusting devices, Controllers, Water heaters, Combustion products, Fitness for purpose, Definitions, Heating equipment, Formulae (mathematics), Performance testing, Classification systems, Instructions for use, Fire safety, Heaters
Title in FrenchAppareils de production instantanée d'eau chaude pour usages sanitaires utilisant les combustibles gazeux
Title in GermanGasbeheizte Durchlauf-Wasserheizer für den sanitären Gebrauch
File Size1.861 MB
NotesWarning: this draft is not current beyond its expiry date for comments.

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