1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 1453Electric Booster andCommercial Storage TankWater HeatersUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT
2、 AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL Standard for Safety for Electric Booster and Commercial Storage Tank Water Heaters, UL 1453Fifth Edition, Dated June 10, 2004Summary of TopicsThese revisions to ANSI/UL 1453 are being issued to include the following cha
3、nges inrequirements:Addition and Revision of Requirements to Relocate Component Standard Referencesfrom Appendix A into the Body of the Standard as Component Requirements; andAddition of New Requirements for Motors, Motor Overload Protection, and Low VoltageTransformers.Text that has been changed in
4、 any manner or impacted by ULs electronic publishing system is markedwith a vertical line in the margin. Changes in requirements are marked with a vertical line in the marginand are followed by an effective date note indicating the date of publication or the date on which thechanged requirement beco
5、mes effective.The new and revised requirements are substantially in accordance with Proposal(s) on this subject datedApril 29, 2011.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photoco
6、pying, recording, or otherwisewithout prior permission of UL.UL provides this Standard as is without warranty of any kind, either expressed or implied, including butnot limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, inc
7、idental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to use this Standard, even if UL or an authorized UL representative has been advised of thepossibility of such damage. In no event
8、 shall ULs liability for any damage ever exceed the price paid forthis Standard, regardless of the form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment
9、(including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,and/or other elements o
10、f the 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.JULY 15, 2011 UL 1453 tr1
11、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 15, 2011 UL 1453tr2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 10, 2004(Title Page Reprinted: July 15, 2
12、011)1UL 1453Standard for Electric Booster and Commercial Storage Tank WaterHeatersFirst Edition April, 1979Second Edition July, 1982Third Edition February, 1988Fourth Edition September, 1995Fifth EditionJune 10, 2004This ANSI/UL Standard for Safety consists of the Fifth edition including revisionsth
13、rough July 15, 2011.The most recent designation of ANSI/UL 1453 as an American National Standard(ANSI) occurred on July 15, 2011. ANSI approval for a standard does not includethe Cover Page, Transmittal Pages, Title Page, or effective date information.Comments or proposals for revisions on any part
14、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. Neither a printed nor electroniccopy of a Standard should be altered in any
15、 way. All of ULs Standards and allcopyrights, ownerships, and rights regarding those Standards shall remain thesole and exclusive property of UL.COPYRIGHT 2011 UNDERWRITERS LABORATORIES INC.ANSI/UL 1453-2011UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMIS
16、SION FROM ULJULY 15, 2011UL 14532No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .62 Components 73 Units of Measurement .74 Undated References 75 Glossary .7CONSTRUCTION6 Frame and Enclosure 8A6.
17、1 General 8A6.2 Enclosure materials .8A6.3 Emission of burning particles or molten metal .126.4 Accessibility of live parts .146.5 Ventilation openings .167 Heating Element Accessories .168 Doors and Covers .179 Mechanical Assembly 1910 Corrosion Resistance .2011 Supply Connections Permanent Connect
18、ion 2011.1 General .2011.2 Wiring compartments 20A11.3 Field wiring terminals and leads 2112 Supply Connections Cord Connection .2412.1 Supply cord .2412.2 Bushings 2412.3 Strain relief 2512.4 Pin terminals .2513 Current-Carrying Parts 2614 Internal Wiring 2614.1 General .2614.2 Methods .26B15 Splic
19、es 2716 Separation of Circuits .2717 Barriers 2918 Heating Elements .3019 Electrical Insulation .3020 Thermal Insulation 3120.1 General .3120.2 Synthetic foam .3121 Overcurrent Protective Devices .3222 Lampholders .3323 Switches and Control Devices 3424 Temperature-Limiting Controls 34A25 Temperatur
20、e-Regulating Controls .3526 Terminals and Sensing Elements of Temperature-Regulating and Temperature-LimitingControls .3627 Materials in Contact with Water .36A27.1 General 36AJULY 15, 2011 UL 1453 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FRO
21、M UL27.2 Dip tubes 36A28 Spacings .36A29 Grounding .3729A Motors .4029A.1 General 4029A.2 Motor overload protection .40C29B Low-voltage transformers - General 40FREDUCTION OF RISK OF INJURY TO PERSONS30 Reduction of Risk of Injury to Service Personnel 40F31 Enclosures and Guards 4232 Switches and Co
22、ntrols .4233 Surface Temperature 4234 Pressure Vessels and Parts Subject to Pressure .4235 Temperature and Pressure Relief Devices .42PERFORMANCE36 General 4337 Test Installation for Alcove or Closet 4338 Leakage Current Test .4639 Grounding Continuity Test .5040 Input Test 5041 Temperature-Regulati
23、ng and Temperature-Limiting Control Operation Tests .5041.1 Temperature-regulating controls 5041.2 Temperature-limiting controls 5142 Nonmetallic Dip Tube Tests 5142.1 Deformation and weight loss .5142.2 Resistance to crushing 5242.3 Collapse 5443 Temperature Tests 5543.1 General .5543.2 Continuous
24、operation .5743.3 Surface temperature 5844 Hydrostatic Pressure Test .5845 Enclosure Strength Test .5846 Strain Relief Test .5947 Push Back Relief Test .5948 Knockout Test 5949 Dielectric Voltage-Withstand Test .6050 Heating Element Insulation Resistance Test .6051 Electrical Disturbance Evaluation
25、of Foam Thermal Insulation 61MANUFACTURING AND PRODUCTION TESTS52 Dielectric Voltage-Withstand Test .6153 Grounding Continuity Test .63RATINGS54 Details .63JULY 15, 2011UL 14534UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARKINGS55 General
26、 6456 Cautionary Markings 68INSTRUCTIONS57 Details .69APPENDIX AJULY 15, 2011 UL 1453 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover electric booster water heaters, electric commercial storage
27、tank waterheaters, and remote control assemblies for such heaters, rated 600 volts or less, to be employed inordinary locations in accordance with the National Electrical Code, NFPA 70, and that meet at least oneof the following conditions:a) Over 120 gallons (454 L) in capacity;b) Rated over 12 kil
28、owatts; orc) Equipped with one or more temperature-regulating controls that permit a water temperatureof more than 85C (185F).1.2 These heaters are intended for installation in accordance with model mechanical and plumbingcodes.1.3 An electric water heater not exceeding 120 gallons (454 L) capacity,
29、 rated no more than 12 kilowatts,and equipped with a temperature-regulating thermostat having no marked dial setting more than 77C(171F) and provided with a stop to prevent adjustment to a higher setting, shall be judged in accordancewith the requirements in the Standard for Household Electric Stora
30、ge Tank Water Heaters, UL 174.1.4 These requirements do not cover electric boilers, commercial cooking appliances, medical and dentalequipment, or other electric heating equipment or appliances that are covered in or as part of individualrequirements that are separate from this standard. Electrode t
31、ype boilers are not covered by theserequirements.1.5 In the following text, a requirement that applies only to booster water heaters or to commercialstorage-tank water heaters is so identified by a specific reference in that requirement to the equipmentinvolved. Absence of such a specific reference
32、or use of the term water heater indicates that therequirement applies to all of the equipment covered in this standard unless the context indicatesotherwise.JUNE 10, 2004UL 14536UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2 Components2.1 E
33、xcept as indicated in this clause, a component of a product covered by this standard shall complywith the requirements for that component. See the individual sections of this standard for componentrequirements.2.1 revised July 15, 20112.2 A component is not required to comply with a specific require
34、ment 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 standard.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.
35、4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.3 Units of Me
36、asurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3.2 Unless indicated otherwise, all voltage and current values mentioned in this standard are root meansquare (rms).4 Undated References4.1 Any undated reference to a c
37、ode or standard appearing in the requirements of this standard shall beinterpreted as referring to the latest edition of that code or standard.5 Glossary5.1 For the purpose of this standard the following definitions shall apply.5.2 BOOSTER WATER HEATER A water heater furnishing hot water from initia
38、lly heated water,which is usually 60C (140F), with the minimum output water temperature being 77C (171F).5.3 ELECTRICAL CIRCUITS a) Line Voltage Circuit A circuit involving a potential of no more than 600 volts and havingcircuit characteristics in excess of those of a low voltage circuit.b) Low Volt
39、age Circuit A circuit involving a potential of no more than 30 volts rms (42.4 voltspeak) supplied by a battery or by a standard Class 2 transformer or other transforming device,or by a combination of transformer and fixed impedance having output characteristics incompliance with requirements establ
40、ished for a Class 2 transformer. A circuit obtained byconnecting resistance in series with a line voltage supply circuit as a means of limiting thevoltage and current is not considered to be a low voltage circuit.JULY 15, 2011 UL 1453 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
41、ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.3.1 ENCLOSURE The part of an electric water heater that surrounds insulated and uninsulatedcurrent-carrying live parts and that is intended to contain a fire resulting from an electrical fault.5.3.1 added July 15, 20115.3.2 FRAME A structure of angle or cha
42、nnel or a folded rigid section of sheet metal that is rigidlyattached to and has essentially the same outside dimensions as the enclosure surface and that hassufficient torsional rigidity to resist the bending moments which may be applied via the enclosuresurface when it is deflected.5.3.2 added Jul
43、y 15, 20115.4 HEATING ELEMENT ACCESSORY An attachment to the water heater that will allow electricalrating modification. The heating element accessory consists of a heating element(s), a new rating label,and associated hardware to mount the element(s).5.4.1 OPERATING CONTROL A control intended to st
44、art or regulate the appliance during normaloperation. An example would be a water temperature-regulating control. An operating control couldprovide Type 1 or Type 2 action. (See definitions 5.8 and 5.9.)5.4.1 added April 7, 20095.4.1.1 OUTER JACKET The part of the water heater that surrounds the sto
45、rage tank and that isintended to provide mechanical protection for the tank and for thermal insulation when the insulation isprovided. The outer jacket also serves as an enclosure of current-carrying parts and insulatedconductors between heating elements in separate control or wiring compartments.5.
46、4.1.1 added July 15, 20115.4.2 PROTECTIVE CONTROL A control intended to prevent the risk of electric shock, fire, or injuryto persons during abnormal operation of the appliance. An example would be a water temperature limitcontrol. A protective control always provides Type 2 action. (See definitions
47、 5.8 and 5.9.)5.4.2 added April 7, 20095.5 QUALIFIED SERVICE PERSONNEL Persons having appropriate technical training andexperience necessary to:a) Perform tasks in service access areas of the equipment; andb) Be aware of risks of injury to which they are exposed in performing a task, and of measures
48、to minimize these risks to themselves or other persons.5.6 SAFETY CONTROL A control that is relied upon to reduce the risk of fire, electric shock, orinjury to persons for example, an interlock. A safety control may include such devices as relays,switches, interlocks, and other auxiliary equipment u
49、sed to form a safety control system.5.7 TEMPERATURE-PRESSURE RELIEF VALVE An automatic resetting pressure relieving deviceactuated by water pressure or an integral thermal element that is in contact with and responsive to theheated water.5.8 TYPE 1 ACTION Automatic action for which the manufacturing deviation and the drift of itsoperating value, operating time, or operating sequence have not been declared and tested to theStandard for Automatic Electrical Controls for Household and Similar Use, Part 1: G
