1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1261 Electric Water Heaters for Pools and TubsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED
2、 FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Water Heaters for Pools and Tubs, UL 1261 Fifth Edition, Dated March 23, 2001 Summary of Topics This revision of ANSI/UL 1261 is being issued to add and revise requirements to relocate component
3、standard references from Appendix A into the body of the standard as component requirements. 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 an
4、d are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The new/revised requirements are substantially in accordance with Proposal(s) on this subject dated January 24, 2014. All rights reserved. No part of this publi
5、cation 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 Standard as is without warranty of any kind, either expressed or implied, including but not l
6、imited to, the implied warranties of merchantability or tness for any purpose. In 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 t
7、o use this Standard, 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 f
8、or Safety agree to defend, indemnify, and hold UL harmless from and against any loss, 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 sys
9、tem. The requirements 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 ha
10、ve a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. APRIL 22, 2014 UL 1261 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 22, 2014 UL 1261 tr2 No Text on This PageUL COPY
11、RIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 23, 2001 (Title Page Reprinted: April 22, 2014) 1 UL 1261 Standard for Electric Water Heaters for Pools and Tubs First Edition May, 1977 Second Edition March, 1981 Third Edition November, 1992 F
12、ourth Edition January, 1996 Fifth Edition March 23, 2001 This ANSI/UL Standard for Safety consists of the Fifth Edition including revisions through April 22, 2014. The most recent designation of ANSI/UL 1261 as an American National Standard (ANSI) occurred on April 22, 2014. ANSI approval for a stan
13、dard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. 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 Developm
14、ent System (CSDS) at http:/. 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.
15、 COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 1261-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED F
16、OR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 Components 7 3 Glossary .7 CONSTRUCTION 3A Component Specications .8A 3A.1 General .8A 3A.2 Quick-connect wire connectors 8B 3A.3 Terminal blocks 8B 3A.4 Wire connectors .8B 3A.5 Boxes and raceways
17、.8C 3A.6 Overcurrent protection 8C 3A.7 Switches 8C 3A.8 Relays and contactors 8D 3A.9 Transformers 8D 3A.10 Printed wiring boards 8E 3A.11 Temperature sensing thermistor devices .8E 4 Frame and Enclosure 8F 4.1 General 8F 4.2 Protection of combustible materials outside the enclosure .9 4.3 Ventilat
18、ing openings 9 4.4 Thickness of enclosure materials 10 4.5 Openings .11 4.6 Accessibility of uninsulated live parts 11 5 Metal in Contact With Water 16 6 Field-Wiring Connections .17 6.1 General 17 6.2 Leads and terminals .18 7 Field Wiring Compartments .20 8 Leakage Current Collectors .21 9 Equipme
19、nt Grounding 22 10 Bonding For Grounding 22 11 Live or Current-Carrying Parts 23 11.1 General .23 11.2 Current-carrying parts .23 12 Enclosure of Live Parts and Wiring .23 13 Internal Wiring 24 13.1 General .24 13.2 Wiring methods 25 13.3 Splices and connections 25 14 Heating Elements .26 15 Electri
20、cal Insulation .26 16 Thermal Insulation 27 17 Overcurrent Protection 27 17.1 General .27 17.2 Receptacle, transformer, lampholder protection 27 18 Temperature Regulating Controls .28 APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
21、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 18.1 General .28 18.2 Construction .28 19 Temperature-Limiting Controls 28B 20 Electrical Spacings 29 21 Protection Against Risk of Physical Injury 30 21.1 General .30 21.2 Maximum surface temperatures 30 21.3 Stability .31 22 Pressure Vesse
22、ls and Parts Subject to Pressure .31 23 Units Intended for Outdoor Use .31 23.1 General .31 23.2 Enclosure .31 23.3 Corrosion resistance 32 PERFORMANCE 24 Power Input 34 25 Normal Temperature 35 26 Water Temperature .37 27 Dielectric Voltage-Withstand .37 28 Abnormal Operation .38 29 Insulation Resi
23、stance as a Result of Moisture 38 30 Resistance to Rain 38 31 Hydrostatic Pressure 42 32 Metal Coating Thickness .42 33 Endurance of Temperature-Regulating and -Limiting Controls 44 34 Leakage Current in Water .44 35 Stability Test .48 MANUFACTURING AND PRODUCTION-LINE TEST 36 Production-Line Dielec
24、tric Voltage-Withstand .48 36.1 General .48 36.2 Test equipment 49 RATINGS 37 Details .50 MARKINGS 38 Details .51 38.1 Identication and electrical ratings 51 38.2 Temperatures for eld-wiring conductors 52 38.3 Marking of eld terminals 53 39 Permanence .53 39.1 General .53 39.2 Oven aging 54 39.3 Imm
25、ersion .54 39.4 Standard atmosphere .54 39.5 Evaluation of adhesive labels 54 APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INSTRUCTIONS 40 Installation .55 41 Use Instruc
26、tions 56 APPENDIX A APPENDIX B REQUIREMENTS FOR ELECTRONIC CONTROLS EVALUATED TO THE STANDARD FOR TEMPERATURE-INDICATING AND -REGULATING EQUIPMENT, UL 873 B1 General .B1 APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 4AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTI
27、ON OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 4B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 23, 2001 ELECTRIC WATER HEATERS FOR POOLS AND TUBS
28、- UL 1261 5 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. JUNE 25, 2004 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODU
29、CTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover permanently installed electric water heaters, rated 600 volts or less, for heating the water supplied through plumbing to separately heated public or private pools or tubs, in which swimming, wading, b
30、athing, or partial or total immersion of persons, may be involved. Equipment covered may or may not be intended for use with external water circulating equipment, and is intended for installation in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements do not cover household
31、storage tank water heaters or other equipment covered by individual requirements. 1.3 Deleted June 25, 2004 2 Components Section 2 revised and relocated as Section 3A.1 April 22, 2014 3 Glossary 3.1 For the purpose of this standard the following denitions apply. 3.2 ACTUATION Movement of the actuati
32、ng member of the control by the user, by hand, by foot, or by any other human activity. 3.2 added April 22, 2014 3.3 CONTROL, AUTOMATIC ACTION A device in which the transmission and operation of at least one function is produced by initiation which is not the result of manual actuation. 3.3 added Ap
33、ril 22, 2014 3.4 CONTROL, LIMITING A control intended to limit the operation of the heater to a water temperature of 70C (158F) under all conditions, including breakdown of any or all operating controls. 3.3 relocated as 3.4 April 22, 2014 3.5 CONTROL, MANUAL A device that requires direct human inte
34、raction to activate or test the control. 3.5 added April 22, 2014 3.6 CONTROL, OPERATING A device that starts or regulates the operation of an appliance during normal operation. The failure of an operational control generally causes the operation of a protective control. An example of an operating c
35、ontrol is a temperature regulating control a control that maintains the temperature of the spa water to a user-determined level. 3.6 revised April 22, 2014 3.7 CONTROL, PROTECTIVE A device, the operation of which is intended to reduce the risk of electric shock, re, or injury to persons during norma
36、l or abnormal operation of the appliance. During the evaluation of the protective control / circuit, the protective functions are veried under normal and single-fault conditions of the control. 3.7 added April 22, 2014 APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 7UL COPYRIGHTE
37、D MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.8 CONTROL, TYPE 2 ACTION The actuation of an automatic control (see 3.3) for which the manufacturing deviation and the drift of its operating value, operating time, or operating sequence have been declare
38、d and tested under the Standard for Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements, UL 60730-1. 3.8 added April 22, 2014 3.9 CONTROL, TYPE 2.D.H ACTION This action is applicable to manual controls (see 3.5). The automatic action (i.e. tripping of the contro
39、l) is independent of the manipulation or position of the manual reset/adjustment mechanism. The manipulation of the manual adjustment means will not allow for the reverse operation (resetting of a tripped control), even momentarily, while the excess or fault condition persists. This action is also r
40、eferred to as trip-free action. The action of the control is such that the reverse operation (resetting) is possible if the manual reset mechanism is held in the reset position i.e. the control will function as an automatic control if the reset button is held in the reset position. The control shall
41、 not reset automatically at any temperature above -35C (-31F) with the reset mechanism in the normal position. 3.9 added April 22, 2014 3.10 CONTROL, TYPE 2.D.J ACTION This action is applicable to manual controls (see 3.5). The automatic action (i.e. tripping of the control) is independent of the ma
42、nipulation or position of the manual reset/adjustment mechanism. The manipulation of the manual adjustment means will not allow for the reverse operation (resetting of the control), even momentarily, while the excess or fault condition persists. This action is also referred to as trip-free action 3.
43、10 added April 22, 2014 3.11 CONTROLLED ENVIRONMENT An environment that is relatively free from conductive contaminants, such as dust and carbon particles, and that is protected against humidity and condensation. A controlled environment may be provided by a hermetically sealed enclosure, encapsulat
44、ion, or a conformal coating. 3.11 added April 22, 2014 3.12 HOT TUB A tub intended for partial or total immersion of persons in heated water. 3.2 relocated as 3.12 April 22, 2014 3.13 LOW-VOLTAGE CIRCUITS A low-voltage circuit is one involving a potential of not more than 30 volts rms (42.4 volts pe
45、ak) supplied by a primary battery, by a standard Class 2 transformer, or by a combination of a transformer and a xed impedance that, as a unit, complies with all of the performance requirements for a Class 2 transformer. A circuit derived from a source of supply at line voltage by connecting resista
46、nce in series with the supply as a means of limiting the voltage and current is not considered to be a low-voltage circuit. 3.4 relocated as 3.13 April 22, 2014 3.14 OPERATING TEMPERATURE VALUE Value of temperature at which the temperature sensing control operates on a rise or fall of the temperatur
47、e. 3.14 added April 22, 2014 3.15 TEMPERATURE SETTING BY THE USER Any selection of an operating temperature value by actuation performed by the user. 3.15 added April 22, 2014 APRIL 22, 2014 ELECTRIC WATER HEATERS FOR POOLS AND TUBS - UL 1261 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
48、DUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 3A Component Specications 3A added April 22, 2014 3A.1 General 3A.1.1 Except as indicated in 3A.1.2, a component of a product covered by this standard shall comply with the requirements for that component as indicated in this Section. 3
49、A.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, b) Is superseded by a requirement in this standard, or c) Is separately investigated when forming part of another component, provided the component is used within its established ratings and limitations. 3A.1.3 A component shall be used in accordance with its rating estab
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