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BS ISO 21927-3:2021

BS ISO 21927-3:2021

$215.11

Smoke and heat control systems – Specifications for powered smoke and heat exhaust ventilators

Published By Publication Date Number of Pages
BSI 2021 80
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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 in construction works.

It provides test and assessment methods of the characteristics and the conformance criteria of the test assessment results.

This document applies to the following:

  1. fans for smoke and heat control ventilation;

  2. impulse/jet fans for smoke and heat control ventilation.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
10 4 Requirements
4.1 Response delay (response time)
4.1.1 Opening under wind load within a given time
11 4.1.2 Opening under snow load within a given time
4.2 Operational reliability
4.2.1 General
4.2.2 Application categories
4.2.3 Motor rating
12 4.3 Effectiveness of smoke/hot gas extraction
4.3.1 General
4.3.2 Gas flow and pressure maintenance during smoke and heat extraction test
4.4 Resistance to fire
4.5 Ability to open under environmental conditions
4.5.1 Opening under wind load within a given time
4.5.2 Opening under snow load within a given time
4.6 Durability of operational reliability
5 Testing, assessment and sampling methods
5.1 General
13 5.2 Test of response delay (response time) opening under wind / snow load within a given time
5.2.1 Wind load
14 5.2.2 Snow load
5.3 Operational reliability
5.3.1 Application categories
5.3.2 Motor rating
5.4 Effectiveness of smoke/hot gas extraction: gas flow and pressure maintenance during smoke and heat extraction test
5.5 Resistance to fire
5.6 Ability to open under environmental conditions: opening under wind or snow load within a given time
5.7 Durability of operational reliability
15 6 Marking, labelling and packaging
16 Annex A (normative) Criteria to determine the family of fans in order to select the sizes to be tested
37 Annex B (normative) Criteria to determine a family of motors in order to select the sizes to be tested
46 Annex C (normative) Test method for the determination of fire resistance of powered smoke and heat control ventilators (fans)
55 Annex D (normative) Test methods for electric motors to determine the impact of the changes on the product characteristics
60 Annex E (normative) Test method for assessing the response delay and ability to open under environmental conditions
61 Annex F (informative) Explanatory notes
77 Annex G (informative) General guidance for installation and maintenance
78 Bibliography

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BS ISO 21927-3:2021
$215.11