UL 1795-2016 UL Standard for Safety Hydromassage Bathtubs (Fifth Edition Reprint with revisions through and including December 8 2017).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1795 Hydromassage Bathtubs STANDARD FOR SAFETYUL 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 Hydromassage Bathtubs, UL 1795 Fifth Edition, Dated September 2, 2016 Summary of Topics This new edition to UL 1795, the Standard for Hyrdromassage Bathtubs, includes the following changes: Revise require

3、ments for electronic circuits Allow the use of UL 840 to evaluate clearance and creepage distances Update requirements for switches The requirements are substantially in accordance with Proposal(s) on this subject dated June 24, 2016. All rights reserved. No part of this publication may be reproduce

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6、en 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 to defe

7、nd, 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 system. SEPTEMBER 2, 2016

8、UL 1795 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 2, 2016 UL 1795 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 2, 2016 1 UL 17

9、95 Standard for Hydromassage Bathtubs First Edition February, 1988 Second Edition November, 1993 Third Edition March, 1999 Fourth Edition August, 2009 Fifth Edition September 2, 2016 This UL Standard for Safety consists of the Fifth Edition. Comments or proposals for revisions on any part of the Sta

10、ndard 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 Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way.

11、 All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTE

12、MBER 2, 2016 HYDROMASSAGE BATHTUBS - UL 1795 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .8 2 Units of Measurement .8 3 Undated References 9 4 Glossary .9 5 Accessories .11 CONSTRUCTION

13、 6 General .11 7 Component Specications 12 7.1 General 12 7.2 Quick-connect wire connectors 13 7.3 Terminal blocks .13 7.4 Wire connectors .13 8 Frame and Enclosure 14 8.1 General 14 8.2 Barriers 15 8.3 Moving parts 18 9 Mechanical Assembly 18 9.1 General 18 9.2 Adhesive used to secure parts 19 10 A

14、ccessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts .20 11 Provisions for Servicing 26 12 Resistance to Corrosion .26 13 Power Supply Connections 28 13.1 General .28 13.2 Permanently connected units 28 13.3 Cord- and plug-connected units 32 14 Live Parts 32 15 Internal Wiring

15、33 15.1 General .33 15.2 Splices and connections 34 16 Separation of Circuits .35 17 Grounding .36 18 Equipotential Bonding .37 19 Circuits 38 19.1 General .38 19.2 Secondary circuits 38 19.3 Circuits accessible to a bathtub occupant .38 19.4 Circuits that perform Safety Critical Functions 39 20 Ins

16、ulation 40 20.1 Electrical insulation .40 20.2 Thermal insulation 40 21 Printed-Wiring Boards .40 22 Spacings 41 22.1 General .41 22.2 Class 2 circuits .41 22.3 Field-wiring terminals .41 SEPTEMBER 2, 2016 HYDROMASSAGE BATHTUBS - UL 1795 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTI

17、ON OR DISTRIBUTION WITHOUT PERMISSION FROM UL 22.4 Other than eld-wiring terminals 41 22.5 Safety circuits 41 22.6 Printed-wiring boards .42 22.7 Spacings within motors .42 23 Clearance and Creepage Distances .42 24 Ground-Fault Circuit-Interrupters 43 25 Electric Heaters 43 26 Hydromassage Bathtubs

18、 Congured for Field-Installed Heaters 43 27 Field-Installed Heaters .44 28 Heater Protection .45 29 Motors .45 30 Motor Overload Protection .46 31 Air Blowers 47 32 Overload Protection .47 33 Leakage Current Collectors 49 34 Gaskets .50 35 Luminaires .50 36 Capacitors .51 37 Transformers .52 38 Swit

19、ches, Receptacles, and Controls 53 38.1 General .53 38.2 Manually-operated switches .55 38.3 Reduction of risk of injury to persons .56 39 Sharp Edges .56 40 Temperature-Regulating Controls .56 40.1 General .56 40.2 Temperature-regulating controls with a marked or implied “off” position .57 41 Tempe

20、rature-Limiting Controls 58 41.1 General .58 41.2 Temperature-sensitive controls .58 41.3 Pressure-sensitive controls 59 42 Temperature sensing, thermistor devices 60 43 Parts Subject to Pressure 60 44 Protection Against Entrapment .60 45 Direct Plug-In Controls 61 46 Ozone Generators 62 PERFORMANCE

21、 47 General 62 48 Insulation Resistance Test .63 49 Starting Current Test 63 50 Power Input Test .63 51 Temperature Test .64 52 Dielectric Voltage-Withstand Test .68 52.1 General .68 52.2 Class 2 circuits .68 52.3 Printed-wiring boards .68 53 Switch Overload Test .69 54 Water Temperature Tests 69 54

22、.1 General .69 54.2 Normal operation .69 54.3 Abnormal operation .70 SEPTEMBER 2, 2016 HYDROMASSAGE BATHTUBS - UL 1795 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 55 Water Exposure Test 71 55.1 General .71 55.2 Splashing .72 55.3 Floodi

23、ng 72 56 Available Current Test .72 57 Test for Leakage Current After Heating Element Failure .73 58 Grounding Impedance Test 74 59 Flow Rate Test .74 60 Gaskets and Seals Accelerated Aging Test 75 61 Ozone Offgas Test 75 62 Abnormal Operation Tests .76 62.1 Water back ow 76 62.2 Electrolytic capaci

24、tor 76 62.3 Rotating parts test 76 62.4 Transformer test .77 62.5 Dry-re control operation 77 63 Tests for Parts Subject to Pressure .77 63.1 Hydrostatic pressure test 77 63.2 Reverse hydrostatic pressure test 78 63.3 Check valves 78 64 Metallic Coating Thickness Test 78 65 Strain Relief Test .80 66

25、 Leakage Current Test .80 67 Tests for Field-Installed Heaters 83 68 Direct Plug-In Controls 83 MANUFACTURING AND PRODUCTION-LINE TEST 69 Dielectric Voltage-Withstand Test .84 RATINGS 70 General 85 MARKINGS 71 General 85 72 Cord Tags .88 73 Hydromassage Bathtubs Congured for Field-Installed Heaters

26、89 74 Field-Installed Heaters .89 75 Direct Plug-In Controls 90 INSTRUCTIONS 76 General 91 77 Instructions Pertaining to a Risk of Fire, Electric Shock, or Injury to Persons .92 78 Operating Instructions .93 79 Installation Instructions 94 80 User-Maintenance Instructions .95 SEPTEMBER 2, 2016 HYDRO

27、MASSAGE BATHTUBS - UL 1795 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SUPPLEMENT SA - UL 60335-1 BASED REQUIREMENTS FOR THE EVALUATION OF ELECTRONIC CIRCUITS INTRODUCTION SA1 Scope SA1 SA2 General SA1 SA3 Glossary SA1 CONSTRUCTION SA4

28、Components SA2 SA4.1 Capacitors .SA2 SA4.2 Isolation devices SA3 SA4.3 Printed wiring boards SA3 SA4.4 Switch mode power supplies .SA4 SA5 Identication of Safety Critical Circuit Functions .SA4 SA5.1 General SA4 SA5.2 Protective electronic circuits SA5 SA5.3 Operating circuits that mitigate a danger

29、ous malfunction of the appliance SA5 SA6 Evaluation of the Different Types of Electronic Circuits .SA5 SA7 Circuits that Provide Safety Critical Functions SA6 PERFORMANCE SA8 General Conditions for the Tests SA6 SA8.1 Details .SA6 SA8.2 Intentionally weak parts SA7 SA8.3 Test results determined by o

30、vercurrent protection operation SA7 SA9 Low-Power Circuit Determination SA8 SA10 Abnormal Operation and Fault Tests SA9 SA11 Switch Mode Power Supply Overload Test .SA11 SA12 Overload Protection (Transformer and Associated Circuits) Test SA11 SA13 Programmable Component Reduced Supply Voltage Test S

31、A12 SA14 Electromagnetic Compatibility (EMC) Requirements Immunity .SA13 SUPPLEMENT SB - CONTROLS EVALUATED TO UL 60730-1 AND ITS PART 2S INTRODUCTION SB1 Scope SB1 SB2 General SB1 SB3 Glossary SB1 CONSTRUCTION SB4 Temperature-Regulating Controls SB2 SB5 Temperature-Limiting Controls SB3 SB6 Pressur

32、e-Sensitive Controls .SB4 SEPTEMBER 2, 2016 HYDROMASSAGE BATHTUBS - UL 1795 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SUPPLEMENT SC - CONTROLS EVALUATED TO UL 508 AND UL 873 INTRODUCTION SC1 Scope SC1 SC2 General SC1 CONSTRUCTION SC3

33、General SC1 SEPTEMBER 2, 2016 HYDROMASSAGE BATHTUBS - UL 1795 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover indoor hydromassage bathtubs, rated 250 volts or less, for household and commerc

34、ial use, for permanent connection to the plumbing of the building. They are intended for either permanent connection to the electrical supply or are factory-provided with a cord terminating in an attachment plug, and are intended for installation and use in accordance with the National Electrical Co

35、de, NFPA 70. 1.2 These requirements do not cover portable cord-connected hydromassage equipment, which is covered by the Standard for Personal Hygiene and Health Care Appliances, UL 1431, or hydrotherapy tubs, which are covered by the Standard for Medical Electrical Equipment, Part 1: General Requir

36、ements for Safety, UL 60601-1. 1.3 The majority of the requirements in this standard address complete hydromassage bathtubs, including eld-installed accessories. The following sections specify requirements for eld-installed accessory heaters evaluated and certied for the hydromassage bathtub manufac

37、turer. a) Hydromassage Bathtubs Congured for Field-Installed Heaters, (CONSTRUCTION) Section 26, and b) Field-Installed Heaters, Section 27. c) Test for Field-Installed Heaters, (PERFORMANCE) Section 67. d) Hydromassage Bathtubs Congured for Field-Installed Heaters, (MARKINGS) Section 73, and e) Fie

38、ld-Installed Heaters, Section 74. 2 Units of Measurement 2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2 Unless otherwise indicated, all voltage and current values mentioned in this standard are root-mean-square (rms).

39、SEPTEMBER 2, 2016 HYDROMASSAGE BATHTUBS - UL 1795 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Undated References 3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as re

40、ferring to the latest edition of that code or standard. 4 Glossary 4.1 For the purpose of this standard the following denitions apply. 4.2 ACCESSIBLE PART A part located so that it can be contacted by a person, either directly or by means of a tool during user servicing, or that is not recessed the

41、required distance behind an opening. 4.3 ACCESSIBLE TO THE OCCUPANT Any surface or component within a 5-foot (1.52-m) reach path of the bathtub occupant. 4.4 ACCESSORY An optional electrical component that is intended to be attached to the main equipment in the eld or that may be shipped separately

42、from the main equipment. 4.5 CLASS 2 CIRCUIT A secondary circuit with an open circuit potential of no more than 30 volts rms (42.4 volts peak) supplied by either an inherently limited Class 2 transformer or by a transformer and xed impedance that together comply with all performance requirements for

43、 inherently limited Class 2 transformers in the Standard for Low Voltage Transformers Part 1: General Requirements, UL 5085-1, and the Standard for Low Voltage Transformers Part 3: Class 2 and Class 3 Transformers, UL 5085-3. 4.6 CONFORMAL COATING An insulating coating that conforms to the congurati

44、on of the object that is coated. The coating is used as a covering to protect against environmental conditions. 4.7 CONTROLLED ENVIRONMENT An environment that is relatively free from conductive contaminants, such as dust and carbon particles, and that is protected against humidity and the formation

45、of condensation. A controlled environment may be provided by a hermetically sealed enclosure, encapsulation, or a conformal coating. 4.8 DEAD METAL A metal part not connected to electrical circuitry and not intended to conduct current. Does not include an isolated metal name plate, cabinet trim, scr

46、ews, or small metal hardware fastened to a nonconductive enclosure. 4.9 DOUBLE INSULATION An insulation system comprised of basic insulation and supplementary insulation, with the two insulations physically separated and arranged so that they are not simultaneously subjected to the same deterioratin

47、g inuences (temperature, contaminants, or the like) to the same degree. 4.10 DRY-FIRE PROTECTION A device or circuit that de-energizes the heater whenever water circulation through the heater is interrupted. 4.11 ENCLOSURE That part of a unit that: a) Renders inaccessible any part that may present a

48、 risk of electric shock; b) Prevents emission of ame or molten material; or c) Prevents unintentional contact with internal parts that may involve a risk of injury. Some examples are tub materials, skirting materials, service access covers, electrical boxes, and barriers. SEPTEMBER 2, 2016 HYDROMASS

49、AGE BATHTUBS - UL 1795 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4.12 FIELD-WIRING TERMINAL A terminal or terminals to which the electrical supply is to be connected during installation of the unit. 4.13 HYDROMASSAGE BATHTUB A permanently installed bathtub equipped with a recirculating piping system, a pump, and associated plumbing constructed to accept, circulate, and discharge water upon each use. Optional equip