This European Standard specifies the requirements and test methods for the construction, safety, marking and rational use of energy of independent gas-fired convection heating appliances that are fitted with fan-assisted atmospheric burners, or fully pre-mixed burners. This standard is applicable to independent convection heaters, burning gas having a fan to assist the transportation of combustion air and/or flue gases, hereafter referred to as 'appliances': - that are types B12, B13, B14, B22, B23, C12, C13, C32, C33, C42, C43, C52, C53, C62 and C63 (see 4.2); - that are wall mounted, free-standing or built-in; - that have a nominal heat input not exceeding 20 kW (based on the net calorific value). In addition, this standard is applicable to live fuel effect appliances. This standard is not applicable to: a) open fronted appliances to prEN 13278:1998; b) appliances fitted with automatic forced-draught burners to EN 676; c) ducted-air appliances; d) appliances installed by means of a closure plate (see 3.3.3.8). This standard is only applicable to appliances which are intended to be type tested. Matters related to quality assurance systems, tests during production and to certificates of conformity of auxiliary devices are not dealt with by this standard.