ISO INTERNATIONAL STANDARD 13261-1 First edition 1998-04-01 Sound power rating of air-conditioning and air-source heat pump equipment - Part 1: Non-ducted outdoor equipment Détermination du niveau de puissance acoustique des climatiseurs et pompes a chaleur sur I'air. Partie 1:Appareils extérieurs non raccordés ISO Reference number ISO 13261-1:1998(E) ISO 13261-1:1998(E) Contents Page Scope. 2 Normative references.. 3 Definitions. 2 4 Requirements for conducting sound tests..... Testing requirements for equipment . 4.1 4.2 Data to be taken.. 4.3 Special testing considerations for the optional 63 Hz octave band... 4.4 Use of windscreen...... 4.5Equipment mounting .... Sound rating procedures.. 5 5.1 5.2 Determination of equipment sound power levels ..... 5 5.3 Determination of the octave band sound power level 5 5.4 Determination of the A-weighted overall sound power Ilevel rating, LwA ..... 6 5.5 Standard rating conditions. 6 Published ratings . 8 6.1 General.... 6.2Standard ratings ..... 8 6.3 Application ratings .. 8 Annex A: Special rating procedure using Iso 9614 ... Annex B: Determination of the single-number, tone-adjusted A- weighted overall sound power level sound quality indicator (LwAT) 10 ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International OrganizationforStandardization Case postale 56 . CH-1211 Geneve 20 · Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland ii @ISO ISO 13261-1:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non- governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are Standard requires approval by at least 75 % of the member bodies casting a vote. ISO/TC 86,Refrigeration, Subcommittee SC 6, Factory-made air- conditioning and heat pump units. Annex A forms an integral part of this part of ISO 13261. Annex B is for information only. ili