1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 484 Room Air ConditionersUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
2、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Room Air Conditioners, UL 484 Ninth Edition, Dated February 7, 2014 Summary of Topics The following revisions to ANSI/UL 484 have been made: 1. Addition of supplement for requirements for alternative path for electronic contr
3、ols 2. Revisions to requirements regarding ammable refrigerants Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effectiv
4、e date note indicating the date of publication or the date on which the changed requirement becomes effective. The new requirements are substantially in accordance with Proposal(s) on this subject dated November 28, 2014 and April 17, 2015. All rights reserved. No part of this publication may be rep
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7、rd, even if UL or an authorized UL representative has been advised 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 t
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9、ents in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effec
10、tive date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JULY 31, 2015 UL 484 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 31, 2015 UL 484 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT
11、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 7, 2014 (Title Page Reprinted: July 31, 2015) 1 UL 484 Standard for Room Air Conditioners First Edition August, 1954 Second Edition September, 1957 Third Edition December, 1961 Fourth Edition January, 1972 Fifth
12、Edition March, 1973 Sixth Edition March, 1982 Seventh Edition April, 1993 Eighth Edition December, 2007 Ninth Edition February 7, 2014 This ANSI/UL Standard for Safety consists of the Ninth Edition including revisions through July 31, 2015. The most recent designation of ANSI/UL 484 as an American N
13、ational Standard (ANSI) occurred on July 30, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 484 on February 5, 1993. The publication of revised pages or a new edition of
14、this Standard will not invalidate the DoD adoption. Comments or proposals for 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:/. ULs Standards for S
15、afety 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. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. A
16、NSI/UL 484-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 7, 2014 ROOM AIR CONDITIONERS - UL 484 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL C
17、ONTENTS INTRODUCTION 1 Scope .7 2 General 7 2.1 Units of measurement .7 2.2 Terminology .7 2.3 Undated references .9 3 Glossary .9 CONSTRUCTION 4 General .12 5 Assembly .13 6 Accessories .18 7 Enclosures 19 7.1 General 19 7.2 Enclosures exposed to weather .22 8 Polymeric Materials 24 8.1 General 24
18、8.2 Material classication 25 8.3 Ignition sources .25 8.4 Material application 26 9 Mounting Hardware 30 10 Field Supply Connections 30 10.1 Permanently-connected units 30 10.2 Cord-connected units .34 10.3 Grounding .35 11 Internal Wiring 36 11.1 General .36 11.2 High-voltage circuits 37 11.3 Low-v
19、oltage circuits .39 11.4 Wiring method .39 11.5 Short circuit protection 40 12 Secondary Circuits 41 12.1 General .41 12.2 Class 2 circuits .42 12.3 Limited voltage/current circuits .42 13 Separation of Circuits .43 14 Bonding for Grounding 44 15 Thermal Aisle Containment Systems 47 15.1 General .47
20、 15.2 Equipment employing drop-out ceilings used beneath automatic sprinklers 47 ELECTRICAL COMPONENTS 16 Capacitors .49 17 Current-Carrying Parts 50 18 Electric Air Heaters .50 18.1 Heater elements .50 18.2 Heater overtemperature control 51 JULY 31, 2015 ROOM AIR CONDITIONERS - UL 484 3UL COPYRIGHT
21、ED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 18.3 Heater overcurrent protection 51 19 Fuseholders and Circuit Breakers .52 19.1 Fuseholders .52 19.2 Circuit breakers 53 20 Fuses and Supplementary Protectors .53 21 Insulating Material 54 22 Motors .54
22、 23 Motor Protection 57 23.1 General .57 23.2 Protection of single-phase nonhermetic motors 57 23.3 Protection of three-phase motors .59 23.4 Protection of hermetic refrigerant motor-compressors .60 24 Switches and Controllers 60 25 Valves and Solenoids .65 26 Outlet Boxes, Electrical Cable, Conduit
23、 and Tubing .65 27 Electromagnetic Interference Filters .66 28 Relays and Contactors 66 29 Optical Isolators and Semiconductor Devices 66 30 Terminal Blocks 66 31 Transformer Protection 67 31.1 High-voltage transformer .67 31.2 Overcurrent protective device 69 32 High-Voltage Control Circuit Conduct
24、or Overcurrent Protection .69 32.1 General .69 32.2 Direct-connected high-voltage control circuit .70 32.3 Tapped high-voltage control circuit .70 32.4 Overcurrent protective device 71 ELECTRICAL SPACINGS 33 High-Voltage Circuits 72 34 Low-Voltage Circuits 74 35 Alternate Spacings Clearances and Cre
25、epage Distances 74 REFRIGERATION SYSTEM 36 Refrigerant .75 37 Pump-Down Capacity .76 38 Refrigerant Tubing and Fittings .76 39 Refrigerant-Containing Parts .77 40 Pressure-Limiting Device 78 41 Pressure Relief .78 41.1 General .78 41.2 Relief valves .79 41.3 Fusible plugs or rupture members 79 PERFO
26、RMANCE 42 Instrumentation .79 42.1 Temperature measurements .79 42.2 Pressure measurements 80 43 Test Voltage .81 44 Leakage Current Test Cord-Connected Room Air Conditioners .81 FEBRUARY 7, 2014 ROOM AIR CONDITIONERS - UL 484 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTR
27、IBUTION WITHOUT PERMISSION FROM UL 45 Rain Test 85 46 Test Conditions for Input Test and Temperature-Pressure Test .88 47 Input Test 89 47.1 General .89 47.2 Cooling load .89 47.3 Heating load (reverse cycle heat only) 90 47.4 Heating load (resistance heat only) .90 47.5 Heating load (combination re
28、verse cycle and resistance heat) .90 48 Temperature and Pressure Test 91 49 Starting Test .94 50 Dielectric Voltage-Withstand Test .94 51 Condenser Fan Motor Failure Test .95 52 Condenser Water Failure Test 96 53 Temperature Test Steam Or Hot Water Heat .97 54 Temperature Test Resistance Heat .98 55
29、 Abnormal Tests Resistance Heat .98 55.1 General .98 55.2 Blocked outlet .98 55.3 Restricted inlet .99 55.4 Fan Failure 99 56 Static Loading Test .99 57 Stability Test 100 58 Overow Test .100 59 Spillage Test 100 60 Heater Temperature-Limiting Control Tests .101 60.1 Endurance test .101 60.2 Calibra
30、tion test 101 61 Maximum Continuous Current Test Motor-Compressor Protection Devices 101 62 Limited Short-Circuit Test .103 62.1 General 103 62.2 Motor overload protective devices .104 62.3 Bonding conductors and connections 105 62.4 Motor circuit conductors and connections 105 63 Current Overload T
31、est Bonding Conductors and Connections .105 64 Overvoltage and Undervoltage Tests .106 65 Insulation Resistance Test 106 65.1 Sheath-type heaters .106 65.2 Thermal and acoustical insulation material .106 66 Accelerated Aging Test Electric Heaters 107 67 Reliability Test Heater Terminations 108 68 Ac
32、celerated Aging Tests On Gaskets Sealing Compounds, And Adhesives .108 69 Metallic Coating Thickness Test .110 70 Strength Tests Pressure Containing Components 111 71 Fatigue Test Analysis 113 71.1 General 113 71.2 Test specications 113 71.3 Material specications .114 71.4 General test specications
33、.114 71.5 Test method 114 71.6 Test parameters 115 71.7 Cycle test pressure specication 115 72 Strain Relief Test 115 73 Burnout Tests Electromagnetic Components 116 FEBRUARY 7, 2014 ROOM AIR CONDITIONERS - UL 484 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHO
34、UT PERMISSION FROM UL POLYMERIC MATERIALS PERFORMANCE 74 Heat Deection or Mold Stress-Relief Test 116 75 Water Absorption Test .117 76 Environmental Exposure 118 76.1 Air oven aging 118 76.2 Ultraviolet light and water exposure .118 76.3 Water immersion 118 77 Tensile Strength Test 120 78 Flexural S
35、trength Test 120 79 Izod Impact Test .120 80 Burnout Test High-Voltage Transformers .121 81 Overload Test High-Voltage Transformers 121 82 Tensile Impact Test 122 83 Impact Test .122 84 Volume Resistivity Test .123 MANUFACTURING AND PRODUCTION TESTS 85 Pressure Tests 123 86 Production Line Dielectri
36、c Voltage-Withstand Test .124 87 Production Line Grounding Continuity Test .126 MARKING 88 General 126 89 Permanently-Connected Units .131 90 Cord-Connected Units 137 INSTRUCTIONS 91 Installation and Operating Instructions 138 SUPPLEMENT SA - REQUIREMENTS FOR ROOM AIR CONDITIONERS EMPLOYING A FLAMMA
37、BLE REFRIGERANT IN THE REFRIGERATING SYSTEM SA1 Scope SA1 SA2 Denitions SA1 SA3 General SA2 SA4 Construction SA2 SA4.1 Refrigeration system .SA2 SA4.2 Resistance to corrosion SA3 SA5 Performance SA3 SA5.1 Leakage test .SA3 SA5.2 Ignition protection test .SA3 SA5.3 Temperature test SA5 SA6 Marking, I
38、nstallation and Operating Instructions .SA5 SA6.1 Marking SA5 SA6.2 Installation and operating instructions SA6 JULY 31, 2015 ROOM AIR CONDITIONERS - UL 484 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SUPPLEMENT SB - REQUIREMENTS FOR SM
39、ART ENABLED ROOM AIR CONDITIONERS SB1 Scope SB1 SB2 General SB1 SB3 Functional Safety SB3 SB4 Resistance to Electro Magnetic Phenomena (Immunity) SB4 SB5 Marking and Instructions SB5 SUPPLEMENT SC - ALTERNATIVE PATH FOR ELECTRONIC CONTROLS REQUIREMENTS INTRODUCTION SC1 Scope SC1 SC2 General SC2 SC3
40、Denitions SC2 CONSTRUCTION SC4 Components SC3 SC4.1 Temperature sensing, thermistor devices SC3 SC4.2 Printed wiring boards SC4 SC5 Enclosures .SC4 SC6 Field Connections .SC4 SC7 Electrical Spacing .SC5 SC8 Electrical Insulation SC5 SC9 Control Functions SC5 SC9.1 General SC5 SC9.2 Protective electr
41、onic circuits/control .SC6 SC9.3 Operating controls or circuits that perform safety critical functions .SC6 SC10 Evaluation of the Different Types of Control Circuits SC6 SC11 Protective Electronic Circuits .SC7 SC12 Operating Controls or Circuits that Perform Safety Critical Functions .SC8 PERFORMA
42、NCE SC13 General Conditions for the Tests .SC8 SC13.1 Details SC8 SC13.2 Intentionally weak parts .SC9 SC13.3 Test results determined by overcurrent protection operation .SC9 SC14 Low-Power Circuits SC10 SC14.1 Low-power circuit determination SC10 SC14.2 Low-power circuit re tests .SC11 SC15 Abnorma
43、l Operation and Fault Tests SC11 SC16 Programmable Component Reduced Supply Voltage Test SC13 SC17 Electromagnetic Compatibility (EMC) Requirements - Immunity .SC13 MANUFACTURING AND PRODUCTION LINE TESTING SC18 General SC14 JULY 31, 2015 ROOM AIR CONDITIONERS - UL 484 6AUL COPYRIGHTED MATERIAL NOT
44、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKINGS SC19 General SC15 Appendix A(normative)Selected information about refrigerants Appendix B(informative)Transportation, marking and storage for units that employ ammable refrigerants B.1 Transport of Equipment Cont
45、aining Flammable Refrigerants B1 B.2 Marking of Equipment Using Signs .B1 B.3 Disposal of Equipment Using Flammable Refrigerants B1 B.4 Storage of Equipment/Appliances B1 B.5 Storage of Packed (Unsold) Equipment .B1 Appendix C(normative)Manuals C.1 General C1 C.2 Symbols C1 C.3 Information in Instal
46、lation and Operating Manuals .C1 Appendix D(normative)Leak simulation tests D.1 General D1 D.2 Test Methods .D1 Appendix E(normative)Charge limits and additional test requirements for appliances using ammable refrigerants E.1 Requirements for Charge Limits .E1 JULY 31, 2015 ROOM AIR CONDITIONERS - U
47、L 484 6BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover room air conditioners rated not more than 600 volts alternating current (ac) and intended for installation in accordance with the Natio
48、nal Electrical Code, ANSI/NFPA 70. 1.2 For the purposes of this standard, room air conditioners include packaged terminal air conditioners, special purpose air conditioners, and recreational vehicle air conditioners. They are factory-made encased assemblies designed as a unit primarily to provide fr
49、ee delivery of conditioned air to an enclosed space, room, or zone. This equipment is intended for installation in a window, through a wall, or as a console located in or adjacent to the room, zone, or space to be conditioned. These units employ hermetic refrigerant motor-compressors with factory-charged refrigeration systems and include means for circulating air. They may also have provision for heating and ventilation. 1.3 With regard to 1.2, a console or in-wall type air cond
