ÖNORM EN 26

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 the production of domestic hot water, 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, C21, C12, C13,C22, C23, C32, C33, C42, C43, C52, C53, C62, C63, C72, C73, C82 and C83;1) 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 premixed burners. using one or more combustible gases corresponding to the three gas families in accordance with table 5 of 7.1.3 and at the pressures stated in tables 6 and 7 of 7.1.4; of nominal heat input not exceeding 45 kW; with an ignition burner or with direct ignition of the main burner. This European standard applies to type C2) water heaters as listed in 4.3.3 : types C1, C3 and C5 water heaters including their combustion air supply and combustion products evacuation ducts and their terminal(s) ; types C2 and C4 water heaters including their connection ducts but without the shared duct system ; this shared duct system is part of the building ; type C6 water heaters without any ducts ; the ducts are separately approved and marketed ; type C7 water heaters up to the draught diverter/air inlet but without the secondary flue ; type C8 water heaters with their connecting ducts but without the chimney, which is part of the building. 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 (...abbreviated)