ISO INTERNATIONAL STANDARD 21927-8 First edition 2017-04 Smoke and heat control systems Part 8: Smoke control dampers Systemes pour le controle des fumées et de la chaleur- Partie 8: Volets des désenfumage Reference number ISO 21927-8:2017(E) os1 International Organization for Standardization @ IS0 2017 ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I Not for Resale, 2017/8/21 02:01:51 ted without license from IHS IS0 21927-8:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internatinair PrganizationforStandardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ07 -All rights reserved Not for Resale, 2017/8/21 02:01:51 etworking permitted without license from IHS IS0 21927-8:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope 2 Normative references 3 Terms and definitions ..2 4 Smoke control damper requirements .5 4.1 General .5 4.1.1 Fire resistance. .5 4.1.2 General application.. 5 4.2 Construction and components: Characteristics .5 4.2.1 Construction and operation 5 4.2.2 Protection against corrosion .7 4.3 Fire resistance performance criteria: Single-compartment smoke control dampers 7 4.3.1 Integrity, leakage, H0T400/30 .7 4.3.2 Durability .7 4.3.3 Fire resistance classification and designation. .8 4.3.4 Other performance criteria 4.4 Fire resistance performance criteria: Multi-compartment fire-resisting smoke control dampers. 4.4.1 Integrity, insulation, leakage, H0T400/30 .9 4.4.2 Durability 4.4.3 Fire resistance classification and designation ..10 4.4.4 Otherperformance criteria. ..10 5 Test methods. .10 5.1 Ambient leakage tests ..10 5.2 Fire resistance tests. .10 5.2.1 General. .10 5.2.2 Smoke control damper: Integrity and insulation .12 5.2.3 Leakage rated smoke control damper .12 5.2.4 Response delay of a smoke control damper ..12 5.3 Salt spray exposure test ..12 5.4 Cycling tests .12 5.5 Damper aerodynamic performance .12 6 Marking and documentation ..13 7 Product, installation and maintenance information (documentation) ..14 7.1 Product specification. ..14 7.2 Installation information. ..14 7.3 Maintenance information .14 Annex A (normative) Salt spray exposure test ..15 Annex B (informative) Example of inspection and maintenance procedure ..16 Bibliography ..17 iii ee=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under lic cense with ISC ed withoutlicense from IHS Not for Resale, 2017/8/21 02:01:51