1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1995 Heating and Cooling EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Heating and Cooling Equipment, UL 1995 Fifth Edition, Dated July 31, 2015 Summary of Topics This fth edition of UL 1995 includes the following: 1. Adding requirements for equipment employing power supply cords, appli
3、ance couplers, and inlets. 2. Adding requirements for condensing units intended to be used in refrigerator or freezer applications and employing ammable refrigerants. 3. Revisions to electric resistance heater requirements. 4. Products with photovoltaic modules, photovoltaic module input circuits or
4、 utility interactive inverters, used with HVAC equipment. 5. Component requirements moving component requirements into the body of the standard. 6. Requirements for coolant distribution equipment for use in Information Technology Equipment (ITE) rooms. 7. Revisions to the scope to remove those produ
5、cts covered by the ANCE/CSA/UL trinational standard 60335-2-40. 8. Update Clause 53.13 to clarify when to de-energize any heat source other than refrigerant heat. 9. Provisions for CO 2 transcritical systems. 10. Editorial revisions and clarications. 11. Update Table 46.5 for the maximum acceptable
6、temperature requirements for Class E insulation, correct temperature for Item (B) (3) Class A windings. 12. Maximum power supply cord length of 15 feet for computer room air conditioners. 13. Denition for computer room air conditioners. 14. Revisions to Section 26.10 covering switches, controllers a
7、nd disconnects. 15. Denition of extra low voltage. 16. Revisions to Clause 75.7 covering the supply voltage mentioned in Table 46.6. 17. Clause 86, Change in number of fatigue test samples. 18. Addition of new section that specically covers heat pump pool heaters. 19. Revision to 28.3 covering the m
8、otor starting capacitor requirements. JULY 31, 2015 UL 1995 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 20. Revision to Clause 30.16 covering breaking all lines. 21. Revising the fan motor failure test requirements in 58.2. 22. Clarif
9、ying Clause 18.2 for air lters and media wheels and plates. 23. Addition of requirements covering UV radiation lamp systems. 24. Continuity of operation for makeup air electric heater. 25. Correct Clause 79.5 and 79.6 reference to Clause 35.11 which is incorrect. 26. Correct table 5.1 to show when H
10、B or HBF, HF-1, and HF-2 can be used. 27. Addition of heat recovery unit requirements. 28. Corrections to Table 17.1 for trade sizes of conduit. 29. Revising the pressure vessel requirements. 30. Addition of requirements covering the reliability of sequence controls. 31. Correcting the temperatures
11、in Table 46.5 for electrical insulation ber (cord bushings). 32. Moving the exing test out of the Manufacturing and Production Line Test. 33. Correcting the reference in Exception No. 2 of 27.3. 34. Revising short circuit rating to interrupting rating in 32.7. 35. Revisions to the three times and ve
12、 times test pressures in Section 34, Refrigerant, hot water, and steam coils; Section 35, Heat pump water heating equipment; and in Section 71, Fatigue test analysis. 36. Addition of maximum operating current and maximum rated current requirements. As noted in the Commitment for Amendments statement
13、 located on the back side of the title page, UL and CSA are committed to updating this harmonized standard jointly. A UL effective date is one established by UL LLC and is not part of the ANSI approved standard. The revised requirements are substantially in accordance with Proposal(s) on this subjec
14、t dated July 25, 2014 and October 31, 2014. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standar
15、d as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. JULY 31, 2015 UL 1995 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL In
16、no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advise
17、d of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any lo
18、ss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. JULY 31, 2015 UL 1995 tr3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
19、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 31, 2015 UL 1995 tr4 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group CSA C22.2 No. 236-15 Fifth Edition Underwriters Laboratories Inc. UL 1995 Fifth Ed
20、ition Heating and Cooling Equipment July 31, 2015 ANSI/UL 1995-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Canadian Standards Association (operating as CSA Group) and U
21、nderwriters Laboratories Incorporated (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA Group or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of CSA Group and UL. CSA Group
22、and UL will issue revisions to this Standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 978-1-77139-831-2 2015 CSA Group All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publi
23、sher. This Standard is subject to periodic review, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquirescsagroup.org and include Proposal for change in the subject line: Standard designati
24、on (number); relevant clause, table, and/or gure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications, visit CSA Groups Online Store at shop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. Copyright 2015 Underwriters
25、Laboratories Inc. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/
26、UL Standard for Safety consists of the Fifth Edition. The most recent designation of ANSI/UL 1995 as an American National Standard (ANSI) occurred on July 30, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. The Natio
27、nal Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standards. The Department of Defense (DoD) has adopted UL 1995 on March 9, 1992. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals f
28、or revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. To purchase UL Standards, visit Comm 2000 at http:/m- or call toll-free 1-888-853-3503.UL COPY
29、RIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .7 1 Scope .9 2 Denitions 11 3 Reference publications .18 3.9 Attachment plugs, receptacles, connectors, and terminals 19 3.10 Controls .20 3.11 Cords, cables, and internal wiring 24
30、3.12 Light sources and associated components 25 3.13 Marking and labeling systems 25 3.14 Power supplies .25 3.15 Printed wiring boards .25 3.16 Switches 26 3.17 Transformers 26 4 Installation and operating instructions 26 CONSTRUCTION 5 Enclosures 28 6 Thickness of sheet metal enclosures for uninsu
31、lated live parts 33 7 Openings in enclosures .36 8 Enclosures, doors, and covers .39 9 Accessibility of parts .40 10 Assembly 41 11 Mechanical protection .42 12 Outdoor use equipment 44 13 Enclosures, outdoor use .45 14 Field wiring connections, outdoor use equipment .46 15 Mechanical assembly eld a
32、ssembly 46 16 Auxiliary devices 47 17 Connection to power supply 48 18 Thermal insulation and air lters 51 19 Terminal parts and leads for eld wiring connections 52 20 Internal wiring 57 21 Separation of circuits 62 22 Electrical insulation .63 23 Motors .64 24 Grounding and bonding 69 25 Mounting o
33、f components .71 26 Switches and controllers .71 27 Transformers .74 28 Capacitors .76 29 Electric crankcase heaters .77 30 Electric heaters .77 31 Receptacles 80 32 Control circuits .81 33 Spacings 84 34 Refrigerant, hot water, and steam coils 87 35 Condensing and compressor units employing ammable
34、 refrigerants. 94 36 Heat pump water heating and heat recovery equipment .94 JULY 31, 2015 CSA C22.2 NO. 236-15 UL 1995 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 37 Power supplies .95 38 Components and subsystems of solar photovoltaic
35、 systems .95 39 Photovoltaic system grounding .96 40 Photovoltaic system ground fault protection 96 41 Photovoltaic system overcurrent protection .96 42 Photovoltaic system disconnection means .97 UNIT MARKINGS 43 General 98 44 Equipment markings 98 45 Other markings 108 TESTS 46 General test parame
36、ters 111 47 Input test .125 48 Temperature operation test without any supplementary heating means .125 49 Temperature operation testswith hot water or steam heating .126 50 Cooling operation testtemperature and pressure 126 51 Heating operation test temperature and pressure 127 52 Abnormal temperatu
37、re and pressure tests refrigerant heat only 127 53 Electric heater tests 128 54 Abnormal temperature and pressure tests 131 55 Backup protection tests .133 56 Fan delay test duct-connected downow and horizontal units .134 57 Control system failure test 134 58 Fan motor failure test 135 59 Motors for
38、 use with wave chopping solid-state speed controls .135 60 Condenser water failure test 136 61 Dielectric voltagewithstand test .137 62 Condensate drain blockage test .138 63 Loading test .138 64 Limited short-circuit test 139 65 Transformer burnout test 140 66 Transformer overload test .140 67 Rain
39、 test 141 68 Accelerated aging tests .144 69 Impact test 146 70 Strength tests .147 71 Fatigue test analysis .147 72 Rupture member tests 150 73 Fusible plug test .150 74 Regulating relief valve endurance test 150 75 Leakage current test cord-connected products .151 76 Starting test .154 77 Strain r
40、elief .154 78 Power supply cords 154 79 Heat pump water heating and heat recovery equipment 155 80 Ultraviolet light exposure test 157 81 Water exposure and immersion test 157 82 Heat pump pool heaters 157 83 Flexing test .158 JULY 31, 2015 CSA C22.2 NO. 236-15 UL 1995 4UL COPYRIGHTED MATERIAL NOT A
41、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MANUFACTURING AND PRODUCTION TESTS 84 Knockout security test 159 85 Pressure tests for leakage and strength 159 86 Production fatigue tests 161 87 Production line dielectric voltage-withstand tests .161 88 Production line
42、grounding continuity test 161 89 Ultraviolet radiation exposure test .161 89.1 Resistance to UV-C radiation .161 89.2 Ultraviolet (UV) irradiance test 162 90 Controls end product test parameters 162 90.1 General 162 90.2 Auxiliary controls 163 90.3 Operating controls (regulating controls) 163 90.4 P
43、rotective controls (limiting controls) .165 90.5 Controls using a temperature sensing device .166 CSA, UL AND OTHER STANDARDS AND CODES 91 Standards for components 167 92 Other Standards and codes .177 SUPPLEMENT SA - REQUIREMENTS FOR DUCT MOUNTED UV LAMPS SYSTEMS WHEN EMPLOYED IN COMBINATION WITH A
44、IR CONDITIONING AND HEATING SYSTEMS PRESENTLY COVERED BY UL 1995/CSA No. 236. SA1 Scope 179 SA2 Denitions .179 SA3 Reference publications .179 SA4 General .179 SA5 Installation and operating instructions .180 SA6 Enclosures 180 SA7 Openings in enclosures .180 SA8 Enclosures, doors, and covers .180 S
45、A9 Accessibility of parts (UV Barriers) .180 SA10 Field assembly .181 SA11 Connection to power supply 182 SA12 Materials in duct system .182 SA13 Resistance to moisture 182 SA14 Leakage current test 183 SA15 Elevated temperature testing 183 SA16 Resistance to UV radiation 183 SA17 Ultraviolet (UV) i
46、rradiance test 183 SA18 Marking: .184 SA19 Evaluation reports: 185 ANNEX A (Informative) Marking Translations JULY 31, 2015 CSA C22.2 NO. 236-15 UL 1995 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL ANNEX B (Informative) Hot, Flaming Oil
47、Test and Molten PVC and Copper Test B1 General 187 B2 Hot aming oil 187 B3 Molten PVC and copper 187 JULY 31, 2015 CSA C22.2 NO. 236-15 UL 1995 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the harmonized CSA Group and UL
48、standard for Heating and Cooling Equipment. It is the fth edition of CSAC22.2 No. 236 and the fth edition of UL 1995. This edition of CSAC22.2 No. 236 and UL 1995 supersedes the previous editions published in 1995, 1990, 2005 and 2011. This harmonized standard was prepared by the CSA Group and Under
49、writers Laboratories Inc. (UL). The efforts and support of the heating and cooling equipment industry, the Air Conditioning and Refrigeration Institute (ARI), and the Heating, Refrigerating, and Air Conditioning Institute of Canada (HRAI) are gratefully acknowledged. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was reviewed by the CSA Subcommitt
