DIN V 4753-8-1996 飲用水和服務用水加熱器和加熱設備.第8部分:額定容量不超過1000 l水加熱器的隔熱性.要求和試驗
Water heaters and water heating installations for drinking water and for service water - Part 8: Thermal insulation for water heaters with nominal capacity up to 1000 l - requirements and testing
The document specifies minimum requirements for heat the insulation of water heaters with a nominal capacity up to 1000 l, which are manufactures in series as well as the limit values for the heat loss of heat insulated vessels.#,,#