Suitsetamisruumi õhu väljatõmbe ventilatsioonisüsteem peab olema iseseisev ja pidev või ühendatud teiste pidevalt toimivate õhu väljatõmbesüsteemidega eraldi püstiku abil.
... where warm-air heating appliances are installed in the engine room, the air intakes must be connected to ducts leading to the open air. ... With natural ventilation, the cross-sectional area of the ducts must be appropriate to the air flow required at velocity of 0,5 m/sec.
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