ISO INTERNATIONAL STANDARD 15042 Secondedition 2017-07 Multiple split-system air conditioners and air-to-air heat pumps - Testing and rating for performance Climatiseurs et pompes a chaleur air/air multi-split - Essais et détermination des caractéristiques de performance Reference number IS0 15042:2017(E) International Organization for Standardization @ IS0 2017 ee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 No reproduction or networking permitted without license from IHS IS0 15042:2017(E) COPYRIGHT PROTECTED DOCUMENT @ 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. ISO copyrightoffice 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 Internatinir DrganizationforStandardization Licensee-ZHEJIANG INST.OF STANDARDIZzRoISQ7 - All rights reserved No reproduction or networking permited without license from IHS IS0 15042:2017(E) Contents Page Foreword ..vi 1 Scope ..1 2 Normative references. 3 Terms and definitions 4 Symbols. 5 Airflow setting. ..8 5.1 General .8 5.2 Airflow setting for ducted indoor units. 5.2.1 General. ..8 5.2.2 Airflow setting procedure for ducted indoor units 5.3 ESPforrating ..8 5.4 Airflow setting for non-ducted indoor units measured by air enthalpy method ..10 5.5 Outdoorairflow ..10 5.6 Unit supplied without indoor fan ..10 6 Cooling tests. ..10 6.1 Cooling capacity test .10 6.1.1 General conditions ..10 6.1.2 Temperature conditions ..11 6.1.3 Test conditions. .12 6.2 Maximum cooling performance test. 6.2.1 General conditions .13 6.2.2 Temperature conditions ..13 6.2.3 Airflow conditions. .13 6.2.4 Test conditions. .13 6.2.5 Performance requirements. ..13 6.3 Minimum cooling test .15 6.3.1 General conditions .15 6.3.2 Temperature conditions .15 6.3.3 Airflow conditions. .15 6.3.4 Test condition .15 6.3.5 Performance requirements. .. 16 6.4 Freeze-up drip test (applies to non-ducted multi-splits) .16 6.4.1 General conditions .16 6.4.2 Temperature conditions. .16 6.4.3 Airflow conditions. ..16 6.4.4 Test conditions. ..17 6.4.5 Performance requirements. .17 6.5 Condensate control test and enclosure sweat test. ..17 6.5.1 General conditions .17 6.5.2 Temperature conditions ..17 6.5.3 Airflow conditions. ..17 6.5.4 Test conditions.. 6.5.5 Performance requirements .18 7 Heating tests. .18 7.1 Heating capacity tests ..18 7.1.1 General conditions ..18 7.1.2 Temperature conditions .19 7.1.3 Airflow conditions. .20 7.1.4 Defrost operation. .20 7.1.5 Test procedure General 21 7.1.6 Preconditioning period 21 7.1.7 Equilibrium period. 21 ii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS IS0 15042:2017(E) 7.1.8 Data collection period .21 7.1.9 Test procedure when a defrost cycle (whether automatically or manually initiated) ends the preconditioning period (7.1.6) 22 7.1.10 Test procedure when a defrost cycle does not end the preconditioning period (7.1.6) 22 7.1.11 Test procedure for transient tests .23 7.1.12 Heating capacity test results. .24 7.2 Maximum heating performance test .24 7.2.1 General conditions .24 7.2.2 Temperature conditions. 24 7.2.3 Airflow conditions. 25 7.2.4 Test conditions. .25 7.2.5 Performance requirements. .25 7.3 Minimum heating performance test 25 7.3.1 General conditions .25 7.3.2 Temperature conditions. 25 7.3.3 Airflow conditions. 26 7.3.4 Test conditions.. .26 7.3.5 Performance requirements 26 7.4 Automatic defrost performance test 26 7.4.1 General conditions. 26 7.4.2 Temperature conditions .27 7.4.3 Airflow conditions 27 7.4.4 Test conditions. .27 7.4.5 Performance requirements 27 8 Heat recovery test. 27 8.1 Heat recovery capacity ratings. 27 8.1.1 General conditions 27 8.1.2 Temperature conditions .27 9 Test met