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 C83,1) ; - 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 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.
Required fields are indicated with *
