1、BSI Standards PublicationBS ISO 5149-3:2014Refrigerating systems andheat pumps Safety andenvironmental requirementsPart 3: Installation siteBS ISO 5149-3:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 5149-3:2014.The UK participation in its preparation wa
2、s entrusted to TechnicalCommittee RHE/18, Refrigeration safety.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. Th
3、e British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 69107 2ICS 27.080; 27.200Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on
4、 30 April 2014.Amendments issued since publicationDate Text affectedBS ISO 5149-3:2014 ISO 2014Refrigerating systems and heat pumps Safety and environmental requirements Part 3: Installation siteSystmes frigorifiques et pompes chaleur Exigences de scurit et denvironnement Partie 3: Site dinstallatio
5、nINTERNATIONAL STANDARDISO5149-3First edition2014-04-15Reference numberISO 5149-3:2014(E)BS ISO 5149-3:2014ISO 5149-3:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized
6、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 ISOs member body in the country of the requester.ISO copyright off
7、iceCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 5149-3:2014ISO 5149-3:2014(E) ISO 2014 All rights reserved iiiContents PageForeword v1 Scope . 12 Normative references 13 Terms and definitions . 14 Loc
8、ation of refrigerating equipment . 14.1 General . 14.2 Refrigerating equipment located in the open air 24.3 Refrigerating equipment located in a machinery room 24.4 Refrigerating equipment located in the occupied space . 24.5 Refrigerating equipment located in unoccupied areas not designated a machi
9、nery room 24.6 Refrigerating equipment located in a ventilated enclosure within an occupied space 24.7 Piping duct or shaft . 25 Machinery rooms . 25.1 Occupancy of machinery rooms and special machinery rooms . 25.2 Venting from or through the machinery room 35.3 Combustion equipment and air compres
10、sors 35.4 Open flame 35.5 Storage . 35.6 Remote emergency switch 35.7 Exterior openings of the machinery room 35.8 Piping and ducting . 45.9 Normal lighting . 45.10 Emergency lighting . 45.11 Dimensions and accessibility . 45.12 Doors, walls, and ducts 45.13 Ventilation . 55.14 Machinery rooms for f
11、lammable refrigerants (groups A2L, A2, B2L, B2, B3, and A3) . 66 Requirements for alternative provisions 76.1 General . 76.2 Occupied space . 76.3 Ventilation . 76.4 Safety shut-off valves . 97 Electrical installations 97.1 General requirements . 97.2 Main power supply . 107.3 Electrical equipment i
12、n machinery rooms in which a refrigerating system contains class 2L flammability refrigerants 108 Safety alarms .108.1 General 108.2 Alarm system power . 108.3 Alarm system warning 108.4 Additional alarm system requirements for R-717 systems with charges above 4 500 kg .119 Detectors 119.1 General 1
13、19.2 Location of detectors 119.3 Function of the detector . 119.4 Type and performance of a detector . 119.5 Installation . 1210 Instruction manuals, notices, and inspections 1210.1 Instruction manual . 1210.2 Warning notice . 12BS ISO 5149-3:2014ISO 5149-3:2014(E)iv ISO 2014 All rights reserved10.3
14、 Visual inspection of site 1310.4 Maintenance of the site . 1311 Heat sources and temporary high temperatures located at the site .13Bibliography .14BS ISO 5149-3:2014ISO 5149-3:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bo
15、dies (ISO member bodies). The work of 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 organizatio
16、ns, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further
17、 maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives)
18、. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Intro
19、duction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to c
20、onformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 86, Refrigeration and air-conditioning, Subcommittee SC 1,
21、 Safety and environmental requirements for refrigerating systems.ISO 5149-3, together with ISO 5149-1, ISO 5149-2, and ISO 5149-4, cancels and replaces ISO 5149:1993, which has been technically revised.ISO 5149 consists of the following parts, under the general title Refrigerating systems and heat p
22、umps Safety and environmental requirements: Part 1: Definitions, classification and selection criteria Part 2: Design, construction, testing, marking and documentation Part 3: Installation site Part 4: Operation, maintenance, repair and recovery ISO 2014 All rights reserved vBS ISO 5149-3:2014BS ISO
23、 5149-3:2014Refrigerating systems and heat pumps Safety and environmental requirements Part 3: Installation site1 ScopeThis part of ISO 5149 is applicable to the installation site (plant space and services). It specifies requirements for the site for safety, which could be needed because of, but not
24、 directly connected with, the refrigerating system and its ancillary components.This part of ISO 5149 is applicable to new refrigerating systems, extensions or modifications of existing systems, and for used systems being transferred to and operated on another site. This part of ISO 5149 also applie
25、s in the case of the conversion of a system for another refrigerant.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references,
26、 the latest edition of the referenced document (including any amendments) applies.ISO 5149-1:2014, Refrigerating systems and heat pumps Safety and environmental requirements Part 1: Definitions, classification and selection criteriaISO 5149-2:2014, Refrigerating systems and heat pumps Safety and env
27、ironmental requirements Part 2: Design, construction, testing, marking and documentationISO 13850, Safety of machinery Emergency stop Principles for designIEC 60204-1, Safety of machinery Electrical equipment of machines General requirementsIEC 60364-1, Low-voltage electrical installations Part 1: F
28、undamental principles, assessment of general characteristics, definitionsIEC 60364-5, Electrical installations of buildings Part 5: Selection and erection of electrical equipment3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 5149-1 apply.4 Location o
29、f refrigerating equipment4.1 GeneralRefrigerating equipment can be sited outside the building in the open air, in a designated machinery room, in occupied areas, or in unoccupied areas not designated as a machinery room.The refrigerating equipment can be contained in a ventilated enclosure provided
30、by the manufacturer. Requirements for this enclosure are given in ISO 5149-2:2014, 5.2.17.INTERNATIONAL STANDARD ISO 5149-3:2014(E) ISO 2014 All rights reserved 1BS ISO 5149-3:2014ISO 5149-3:2014(E)4.2 Refrigerating equipment located in the open airRefrigerating systems sited in the open air shall b
31、e positioned to avoid refrigerant leaking into the building or endangering people. If sited on the roof, the refrigerant shall not be able to flow across the roof into any ventilation fresh air opening, doorway, trap door, or similar opening in the event of a leak. Where a shelter is provided for re
32、frigerating equipment sited in the open air, it shall have natural or forced ventilation.A room where at least one of the longer walls is open to the outside air by means of louvres with 75 % free area and covering at least 80 % of the wall area (or the equivalent if more than one wall is to outside
33、) is considered as being in the open air.4.3 Refrigerating equipment located in a machinery roomWhen a machinery room is chosen as the location of the refrigerating equipment, it shall meet the requirements specified in 5.1 to 5.14. Where the charge of a refrigerant is above the practical limits spe
34、cified in ISO 5149-1, the refrigerating system shall be located in a special machinery room unless the ignition sources in the machinery room meet the requirements of 5.3, 5.4, and 5.14.4.NOTE 1 Additional requirements could be needed for refrigerating systems containing R-717 or other B2L, B2, B3,
35、A2L, A2, and A3 refrigerants as specified in 5.12.NOTE 2 Where housing around refrigerating equipment is sufficiently large for people to enter, the housing is considered as a machinery room and requirements for such rooms apply.4.4 Refrigerating equipment located in the occupied spaceThe requiremen
36、ts shall be as specified in ISO 5149-1:2014, Annex A.4.5 Refrigerating equipment located in unoccupied areas not designated a machinery roomIf this area is sealed from any occupied area, the requirements shall be as those for a machinery room. If the area cannot be sealed from any occupied space, th
37、en the refrigerating machinery shall be considered as located in a human-occupied space and requirements for such spaces shall apply.4.6 Refrigerating equipment located in a ventilated enclosure within an occupied spaceThe ventilated enclosure containing the refrigerating system shall have a ventila
38、tion duct as specified by the manufacturer. The duct shall be no greater in length and have no more bends than the maximum number specified by the manufacturer. The room into which the ventilated enclosure is installed shall be at least 10 times the volume of the enclosure and shall have sufficient
39、make up air to replace any exhausted air. The ventilation from the enclosure shall be to outside air or to a room having a minimum volume specified in ISO 5149-1:2014, 5.2.17 for an occupied space.4.7 Piping duct or shaftWhere hand-operated shut-off devices are mounted in a piping duct or shaft desi
40、gned for human entry, the duct or shaft shall have more than one escape exit. The duct shall have at least 1,2 m of ceiling height.5 Machinery rooms5.1 Occupancy of machinery rooms and special machinery roomsMachinery rooms should not be used as occupied spaces. The building owner or user shall ensu
41、re that access is permitted only by instructed personnel doing the necessary maintenance to the machinery room or general plant. If machinery rooms are occupied for significant periods, e.g. used as a building 2 ISO 2014 All rights reservedBS ISO 5149-3:2014ISO 5149-3:2014(E)maintenance workspace, t
42、hey shall be considered as occupied spaces under occupancy category c, “Authorized Occupancy” given in ISO 5149-1.A special machinery room shall not be used as an occupied space.In accordance with ISO 5149-4, when occupied for maintenance or repair, a duly authorized person, familiar with the use of
43、 the emergency protective equipment and emergency procedures, should be available near to the machinery room during such occupation in case of an emergency.5.2 Venting from or through the machinery roomRefrigerant shall be prevented from entering neighbouring rooms, staircases, courts, gangways, or
44、building draining systems. The escaping gas shall be vented outdoors.There shall be no airflow to an occupied space through a machinery room unless the air is ducted and sealed to prevent any refrigerant leakage from entering the air stream.5.3 Combustion equipment and air compressorsWhere a piece o
45、f combustion equipment is located in a machinery room containing refrigerating equipment, the combustion air supply for combustion engines, boilers, or the supply air for air compressors shall be drawn from a place where there is no refrigerant gas. If such a piece of equipment is installed in a mac
46、hinery room, the combustion air for combustion engines or the supply air for air compressors shall be ducted from outside in such a manner as to prevent any refrigerant leakage from entering the combustion chamber.5.4 Open flameOpen (naked) flames shall not be permitted in machinery rooms or special
47、 machinery rooms, except for welding, brazing, or similar activity and then provided that the refrigerant concentration is monitored and adequate ventilation is ensured. Such open flames shall not be left unattended.NOTE When the refrigerant in the refrigerating machinery is R-744, the use of an ope
48、n flame can be permitted.The ventilation rate for welding and brazing shall be adequate, considering the combustion (products of combustion) of any refrigerant contained in the room.5.5 StorageMachinery rooms shall not be used for storage with the exception of tools, spare parts, and compressor oil
49、for the installed equipment. Any refrigerants and flammable or toxic materials shall be stored as required by national regulations.5.6 Remote emergency switchA remote switch for stopping the refrigerating system shall be provided outside the room, near the machinery room. A similar-acting switch shall be located at a suitable location inside the room. The switches shall meet the requirements for emergency switches in accordance with ISO 13850 and IEC 60204-1.5.7 Exterior openings of the machinery roomExterior openings sha
