ISO INTERNATIONAL STANDARD 7240-8 Secondedition 2014-12-15 Fire detection and alarm systems Part 8: Point-type fire detectors using a carbon monoxide sensor in combination with a heat sensor Systemes de détection et d'alarme d'incendie Partie 8: Détecteurs ponctuels utilisant un capteur de monoxide de carbone en combinaison avec un capteur de chaleur Reference number ISO 7240-8:2014(E) ISO International Organization for Standardization =Zhejiang Institute of Standardization 5956617 IS02014 mitted without license from IHS IS0 7240-8:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland DrganizationforStandardization Not for Resale, 2015/3/11 03:09:02 No reproduction or networking permited without license from IHS IS0 7240-8:2014(E) Contents Page Foreword ..vi Introduction. .viii 1 Scope. 2 Normative references 3 Terms and definitions and abbreviated terms ..2 3.1 Terms and definitions .2 3.2 Abbreviated terms.... 4 Requirements .2 4.1 Compliance .2 .2 4.2 Individualalarmindication 4.3 Connection of ancillary devices 3 4.4 Monitoring of detachable detectors. .3 4.5 Manufacturer's adjustments. .3 4.6 On-site adjustment of response behaviour ..3 4.7 Rate-sensitive response behaviour. .3 4.8 Requirements for software-controlled detectors 4 4.8.1 General. 4.8.2 Software design. .4 4.8.3 The storage of programs and data ..4 5 Tests ..4 5.1 General. 4 5.1.1 Atmospheric conditions for tests ..4 5.1.2 Mounting arrangements. 4 5.1.3 Operating conditions for tests. 5.1.4 Tolerances. .5 5.1.5 Measurement of cO response value. .5 5.1.6 Measurement of heat sensor response value .6 5.1.7 Provision for tests .6 5.1.8 Test schedule 5.1.9 Test report. .7 5.2 Repeatability of cO response. 5.2.1 Object of the test 7 5.2.2 Test procedure 5.2.3 Requirements 7 5.3 Directional dependence of cO response .8 5.3.1 Object of the test .8 5.3.2 Test procedure .8 5.3.3 Requirements .9 5.4 Directional dependence of heat response 9 5.4.1 Object of the test .9 5.4.2 Test procedure. .9 5.4.3 Reguirements 5.5 Lower limit of heat sensitivity 9 5.5.1 Object of the test 9 5.5.2 Test procedure. .9 5.5.3 Requirements .10 5.6 Reproducibility of cO response 10 5.6.1 Object of the test 10 5.6.2 Test procedure ..10 5.6.3 Requirements 10 ii Licensee=Zhejiang Institute of Standardization 5956617 ed without license from IHS