ČSN EN IEC 60704-2-18

These particular requirements apply to single-unit electric water heaters for household and similar use intended for placing on the floor against a wall, for building-in or placing under a counter, a kitchen worktop or under a sink, for wall-mounting or on a counter. This document does not apply to: - combustion water heaters; - water kettles; - heat pump water heaters; - conventional electric storage water heaters as defined in IEC 60335-2-21:2012, Clause 1; - instantaneous electric water heaters without any noise-producing components such as motors and pumps.