DIN 4747-1-2003 区域供热设备.第1部分:与区域水暖供热网相连接的家用分站、站和家用系统的安全要求
Heating plants for district heating - Part 1: Safety requirements for domestic substations, stations and domestic systems to be connected to hot-water district heating networks
This standard applies to safety requirements for domestic substations, domestic stations and domestic systems to be connected to hot-water district heating networks.#,,#