DIN V 4753-8-1996 饮用水和服务用水加热器和加热设备.第8部分:额定容量不超过1000 l水加热器的隔热性.要求和试验
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.#,,#