DIN EN 60379:2004-07
Methods for measuring the performance of electric storage water-heaters for household purposes (IEC 60379:1987, modified); German version EN 60379:2004 / Note: DIN 44532-1 (1989-06), DIN 44532-2 (1989-06), DIN 44532-3 (1989-06) and DIN 44532-100 (1989-...