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ÖNORM ENV 12977-2:2001-10
Действует
Thermal solar systems and components - Custom built systems - Part 2: Test methods
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ÖNORM EN 12975-1:2010-12
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Specifications for installations inside buildings conveying water for human consumption - Part 1: General (Amendment)
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Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow
На этот документ ссылаются
ÖNORM EN 12976-2:2006-04
Заменен
Thermal solar systems and components - Factory made systems - Part 2: Test methods
ÖNORM ENV 12977-1:2001-10
Действует
Thermal solar systems and components - Custom built systems - Part 1: General requirements