1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 228Door Closers-Holders, With orWithout Integral SmokeDetectorsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL
2、NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Door Closers-Holders, With or Without Integral Smoke Detectors, UL 228Fifth Edition, Dated January 26, 2006Revisio
3、ns: This Standard contains revisions through and including November 20, 2008.Summary of TopicsThese revisions to UL 228 are being issued to address universal upkeep of UL Standards forSafety. These revisions are considered to be non-substantive and not subject to ULs STPprocess.Text that has been ch
4、anged in any manner is marked with a vertical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating the date of publication or the date on which the changed requirement becomes effective.The revisions dated Novem
5、ber 20, 2008 include a reprinted title page (page1) for this Standard.As indicated on the title page (page1), this UL Standard for Safety has been adopted by the Departmentof Defense.The UL Foreword is no longer located within the UL Standard. For information concerning the use andapplication of the
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21、Standard having future effective dates as indicated in the note following theaffected item. The prior text for requirements that have been revised and that have a future effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New product submittals made pri
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23、ts this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Listing, Recognition, and Follow-Up Services afterthe effective date, and understanding of this should be signified in writing.Copyright 2008 Underwriters Laborat
24、ories Inc.NOVEMBER 20, 2008 UL 228tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis Standard consists of pages dated as shown in the following checklist:Page Date1November 20, 20082-10 .January 26, 200611.November 20, 200812-42 January 2
25、6, 2006A1-A2November 20, 2008NOVEMBER 20, 2008 UL 228 tr3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 20, 2008 UL 228tr4No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERM
26、ISSION FROM ULJANUARY 26, 2006(Title Page Reprinted: November 20, 2008)1UL 228Standard for Door Closers-Holders, With or Without Integral SmokeDetectorsThe first edition was titled Electromagnetic and Electromechanical DoorHolder-Releasers and Combination Door Closer-Holders (With or Without Integra
27、lSmoke Detectors).First Edition September, 1974Second Edition October, 1979Third Edition April, 1993Fourth Edition April, 1997Fifth EditionJanuary 26, 2006The Department of Defense (DoD) has adopted UL 228 on October 3, 1994. Thepublication of revised pages or a new edition of this Standard will not
28、 invalidatethe DoD adoption.Comments or proposals for revisions on any part of the Standard may besubmitted to UL at any time. Proposals should be submitted via a ProposalRequest in ULs On-Line Collaborative Standards Development System (CSDS)at http:/.ULs Standards for Safety are copyrighted by UL.
29、 Neither a printed nor electroniccopy of a Standard should be altered in any way. All of ULs Standards and allcopyrights, ownerships, and rights regarding those Standards shall remain thesole and exclusive property of UL.COPYRIGHT 2008 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHOR
30、IZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJANUARY 26, 2006UL 2282No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 General 52.1 Components .52.2 Units of measuremen
31、t .62.3 Undated references .6CONSTRUCTION3 General 64 Frame and Enclosure 65 Mounting of Parts .86 Corrosion Protection .97 Insulating Material .98 Current-Carrying Parts .99 Wiring Methods 1010 Internal Wiring 1010.1 General .1010.2 Semiconductors 1111 Installation Wiring Methods 1111.1 General .11
32、11.2 Strain relief 1211.3 Bushings 1212 Spacings 12PERFORMANCE13 General 1414 Normal Operation .1415 Endurance Test 1416 Jarring Test 1617 Input Test 1718 Temperature Test .1719 Holding Power Test .2120 Dielectric Voltage-Withstand Test .2121 Abnormal Operation Test 2222 Fire Tests of Swinging Door
33、Closer-Holders With Integral Smoke Detectors .2222.1 Corridor test .2222.2 Paper fire test A 2222.3 Wood fire test B 2322.4 Gasoline fire test C .2422.5 Polystyrene fire test D .2422.6 Igniter assembly 2522.7 Limited open-area test (optional) .3022.8 Paper fire test A 3022.9 Wood fire test B 3022.10
34、 Gasoline fire test C 3122.11 Polystyrene fire test D .3123 Smoldering Smoke Test .33JANUARY 26, 2006 UL 228 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL24 Insulating Materials Test .41MARKING25 General 41APPENDIX AStandards for Component
35、sA1JANUARY 26, 2006UL 2284UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements apply to swinging door closers equipped with integral electromechanical orelectromagnetic holders and which may be provided wit
36、h integral smoke detectors. These requirementsalso apply to electromagnetic door holder units which are for use with a separate door closer and separateautomatic fire detector.1.2 When integral smoke detectors are provided with the combination door closer-holder, the smokedetectors shall comply with
37、 requirements for smoke detectors of the photoelectric or combustion productstype.1.3 Requirements for the installation of these combination door closers-holders with or without smokedetector units are included in the Standards for Fire Doors and Fire Windows, NFPA 80, and National FireAlarm Code, N
38、FPA 72.1.4 The combination door closers-holders (with or without integral smoke detectors) described in thisStandard provide one of the following types of hold open functions:a) Single point hold open.b) Multiple point hold open. (Two, three, four, etc. discrete hold open points as set at themanufac
39、turers plant.)c) Infinite hold open points with one as set by the user.2 General2.1 Components2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply withthe requirements for that component. See Appendix A for a list of standards covering componentsgenerall
40、y used in the products covered by this standard.2.1.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this standard, orb) Is superseded by a requirement in this st
41、andard.2.1.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as c
42、ertaintemperatures not exceeding specified limits, and shall be used only under those specific conditions.JANUARY 26, 2006 UL 228 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.2 Units of measurement2.2.1 Values stated without parentheses
43、are the requirement. Values in parentheses are explanatory orapproximate information.2.3 Undated references2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.CONSTRUCTION3 Ge
44、neral3.1 The combination door closer-holder shall be designed so that the held door is capable of beingreleased manually by simple and obvious operation, such as pulling on the door knob with a maximumforce of 50 pounds (223 N), and upon release the door becomes self-closing and then latches closed.
45、3.2 The separate holder release device shall be designed so that the held door is capable of beingreleased manually by simple and obvious operation, such as pulling on the door knob or leading edge witha maximum force of 50 pounds (223 N).3.3 Combination door closer-holders (with or without integral
46、 smoke detectors) designed for NationalElectrical Code Class 1 circuits shall be for door frame mounting only.3.4 Combination door closer-holders (with or without integral smoke detectors), intended for mountingwithin or on a door, shall be limited in design to a National Electrical Code Class 2 cir
47、cuit.3.5 For the purposes of this standard, a Class 2 circuit is defined as one that has a maximum of 30 voltsalternating-current RMS (42.4 volts peak or direct current) and 100 volt-amperes.4 Frame and Enclosure4.1 A unit shall resist the abuses to which it is subjected without adversely affecting
48、its performance dueto total or partial collapse with resulting reduction of spacings, loosening or displacement of parts, or otherserious defects.4.2 Electrical parts of a unit shall be located or enclosed so that protection against unintentional contactwith uninsulated hazardous live or dead metal
49、parts is provided.4.3 Operating parts shall be protected against fouling by dust or by other material which affects theirnormal operation.4.4 An enclosure shall have means for mounting which shall be accessible without disassembling anyoperating part of the unit.JANUARY 26, 2006UL 2286UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.5 With reference to the requirement in 4.4, removal of a completely assembled pane
