Smoke and heat control systems — Part 3: Specifications for powered smoke and heat exhaust ventilators (ISO 21927-3:2021)
This document specifies the product characteristics for powered smoke and heat control ventilators(fans) intended to be used as part of a powered smoke and heat control ventilation system inconstruction works.It provides test and assessment methods of the characteristics and the conformance criteria of the testassessment results.This document applies to the following:a) fans for smoke and heat control ventilation b) impulse/ jet fans for smoke and heat control ventilation.
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