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BS 5990:1981

Заменен
Specification for direct gas fired forced convection air heaters for space heating (60 kW up to 2 MW input): safety and performance requirements (excluding electrical requirements) (2nd family gases)
BS 5990:1981
Заменен
BS 5990:1990
Заменен
BS EN 525:1998
Заменен
BS EN 525:2009
Действует
BS 5990:2006
Действует