GB 20665 Minimum allowable values of energy efficiency and energy efficiency grades for domestic gas instantaneous water heaters and gas fired heating and hot water combi-boilers
[摘要] Applies to instantaneous water heaters and heating and hot water combi-boilers which use gas as source and whose heat load……
[发布日期] 2019-04-01 [发布机构]
[效力级别] Minimum energy performance standard [学科分类] 能源（综合）
[关键词] Building technologies;Building systems;Water heating [时效性] Effective
