SS 530:2024 (ICS 27.015; 91.120.10; 91.140.01) SINGAPORE STANDARD Code of practice for energy efficiency for building services and equipment Singapore Standards Council SS 530:2024 (ICS 27.015; 91.120.10; 91.140.01) SINGAPORE STANDARD services and equipment Published by Enterprise Singapore All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilming, without permission in writing from Enterprise Singapore. Request for permission can be sent to: [email protected]. @ Enterprise Singapore 2024 ISBN 978-981-5277-43-2 SS 530:2024 Contents Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions 9 4 Abbreviations 9 5 Air-conditioning equipment 10 9 Water heaters 15 7 Electric motors 16 8 Lighting power density and control 18 9 Distribution transformers 26 10 Lifts and escalators 27 Tables 1 Electrically operated unitary air-conditioners and condensing units - Minimum efficiency requirements 11 2 Electrically operated variable-refrigerant flow air-conditioning units - Minimum efficiency requirements 12 3 Water chilling packages - Minimum efficiency requirements 13 4 Performance requirements for heat rejection equipment 15 5 Water-heating equipment - Performance requirements 16 9 General purpose motors - Minimum nominal efficiency 17 7 Formula for determining motor minimum efficiency 18 8 Maximum building interior lighting power density for compliance using the space-by-space method 20 9 Maximum building interior lighting power density for compliance using RCR 21 10 Building interior control allowance for optional lighting 23 11 Maximum building exterior lighting power density for compliance 24 12 24 13 Minimal efficiency requirement for distribution transformers 27 Figure 1 Illustration of variables used in calculating maximum lux levels 19 Bibliography 28 2 COPYRIGHT SS 530:2024 Foreword This Singapore Standard was prepared by the Working Group on Energy Efficiency for Building Services and Equipment set up by the Technical Committee on Building Maintenance and Management under the purview of the Building and Construction Standards Committee. In Singapore's densely built-up urban development, with limited land and few natural resources, making buildings green and energy efficient underpin our efforts to reduce our energy and carbon footprint anc contribute to the global fight against climate change. Having higher minimum requirements for energy efficient building services and equipment push the boundaries of building performance to create a better and greener built environment and towards achieve our target of net-zero emissions by 2050. updates the minimum requirements to keep abreast of international standards and technological in 2014. The changes include: i) raising the energy efficiency requirements for air-conditioning equipment and water heaters; i) updating of equipment categories, increasing capacity types to align with equipment currently used in the market; ii) adding of efficiency requirements for 8-pole motors, as well as for larger capacity motors for 2- pole, 4-pole, and 6-pole motors; iv) v) introducing methods to determine efficiency for water chilling packages and lighting power density; vi) updating lighting power density requirements, and updating/expanding typology for spaces to align with current usage; and vi) updating efficiency requirements for building transformers, as well as including higher capacity transformerstoalignwithcurrentproductsavailabilityinthemarket. In preparing this standard, reference was made to the following publications: Building Control Regulations 2003 Code for Environmental Sustainability of Buildings, Edition 4.0 Code of Federai Regulations -Part 431 -Energy Efficiency Program for Certain Commerciai andIndustrialEquipment Green Mark 2021 Energy Efficiency Technical Guide, 2nd Edition Regulations 2013 Minimum Energy