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Humidifiers and Dehumidifiers, Water Heaters, and Animals Standards for humidifiers, dehumidifiers, water heaters, and animal heaters all revolve around electrical appliances used for heating with a rated voltage of no more than 250V single-phase or 480V for other appliances. Although differences exist in their structures and applications, these are all drawn together through their similarities. Safety is incredibly important when designing and manufacturing products that produce large amounts of heat that might be used by or are intended for laymen in shops, farms, light industry, or other such environments.

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IEC 60335-2-21 Ed. 6.0 b:2012

Household and similar electrical appliances - Safety - Part 2-21: Particular requirements for storage water heaters

IEC 60335-2-21:2012 deals with the safety of electric storage water heaters for household and similar purposes and intended for heating water below boiling temperature, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. This standard is also applicable to immersion heater units intended to be retrofitted in a heat exchange closed water heater having provision for retrofitting. Such a unit shall comply with the requirements in Annex AA. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account persons (including children) whose physical, sensory or mental capabilities, or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction or children playing with the appliance. This sixth edition cancels and replaces the fifth edition published in 2002 including its Amendment 1 (2004) and its Amendment 2 (2008). The principal changes in this edition as compared with the fifth edition of IEC 60335-2-21 are as follows: - added requirements for immersion heater units (fixed immersion heaters); - removed reference to ISO 13732-1 from Bibliography. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication.Keywords: Storage, Immersion, Water, Heater This publication is to be read in conjunction with IEC 60335-1:2010 .

This standard is also available from: IEC Corrigendum 2013


IEC 60335-2-35 Ed. 5.0 b:2012

Household and similar electrical appliances - Safety - Part 2-35: Particular requirements for instantaneous water heaters

IEC 60335-2-35:2012 deals with the safety of electric instantaneous water heaters for household and similar purposes and intended for heating water below boiling temperature, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. Instantaneous water heaters incorporating bare heating elements are within the scope of this standard. Appliances not intended for normal household use but that nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account persons (including children) whose physical, sensory or mental capabilities, or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction or children playing with the appliance. This fifth edition cancels and replaces the fourth edition published in 2002, including its Amendment 1 (2006) and its Amendment 2 (2009). The principal changes in this edition as compared with the fourth edition of IEC 60335-2-31 are as follows: - converted notes to normative text (7.12, 7.102, 8.1.5, 22.104, and 22.109.3); - deleted notes in 19.13, 22.109, and A.101; - added Annex R and 22.108 for appliances with programmable electronic circuits and added requirements for water heaters (22.50, 22.51). The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication.Keywords: Water heater, Instantaneous, open-outlet, bare-element. This publication is to be read in conjunction with IEC 60335-1:2010 .


IEC 60335-2-40 Ed. 5.0 en:2013

Household and similar electrical appliances Safety Part 2 40 Particular requirements for electrical heat pumps air conditioners and dehumidifiers

IEC 60335 2 40 2013 deals with the safety of electric heat pumps including sanitary hot water heat pumps air conditioners and dehumidifiers incorporating motor compressors and hydronic room fan coils their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances Appliances not intended for normal household use but which nevertheless may be a source of danger to the public such as appliances intended to be used by laymen in shops in light industry and on farms are within the scope of this standard This standard also applies to electric heat pumps air conditioners and dehumidifiers containing flammable refrigerant Flammable refrigerants are defined in 3 121 The appliances referenced above may consist of one or more factory made assemblies If provided in more than one assembly the separate assemblies are to be used together and the requirements are based on the use of matched assemblies This standard does not take into account chemicals other than group A1 A2 or A3 as defined by ANSI ASHRAE 34 ISO 817 classification This standard specifies particular requirements for the use of flammable refrigerants Unless specifications are covered by this standard including the annexes requirements for refrigerating safety are covered by ISO 5149 This fifth edition cancels and replaces the fourth edition published in 2002 it s Amendment 1 2005 it s Amendment 2 2005 and it s Corrigendum 1 2006 It constitutes a technical revision The principal changes in this edition as compared with the fourth edition are as follows 3 127 and 3 128 added new definitions 5 10 length of refrigerant lines now specified for testing 7 1 changed marking requirements for flammable refrigerants 8 15 added requirement to clarify the placement of installation panels during testing 11 2 1 clarification of test procedure 19 whole clause replaced in its entirety 21 2 added new coverage for vibration considerations during transport 22 46 added clarification for PEC 22 118 added coverage for use of mechanical connectors indoors when employing flammable refrigerants 32 made this section of Part 1 applicable Annex FF2 4 revised calculation for calculating volume V Annex FF2 5 revision of allowable concentration of flammable refrigerant gas Annex GG8 new coverage added Annex HH added informative annex Key words heat pumps air conditioners dehumidifiers flammable refrigerant

This standard is also available from: ON


IEC 60335-2-71 Ed. 2.0 b:2002

Household and similar electrical appliances - Safety - Part 2-71: Particular requirements for electrical heating appliances for breeding and rearing animals

"Deals with the safety of all kinds of electrical heating appliances for rearing and breeding livestock. Examples are heat-radiating appliances, electrical sitting-hens, incubators, chicken breeding units and heating plates for animals. For room heaters, see IEC 60335-2-30. For flexible-sheet heating elements for room heating, see IEC 60335-2-96."

This standard is also available from: IEC Amendment 2007  /  IEC Amendment 2012  /  BS  /  AS


IEC 60335-2-71 Ed. 2.1 b:2007

Household and similar electrical appliances - Safety - Part 2-71: Particular requirements for electrical heating appliances for breeding and rearing animals

"Deals with the safety of all kinds of electrical heating appliances for rearing and breeding livestock. Examples are heat-radiating appliances, electrical sitting-hens, incubators, chicken breeding units and heating plates for animals. For room heaters, see IEC 60335-2-30. For flexible-sheet heating elements for room heating, see IEC 60335-2-96."


IEC 60335-2-71 Ed. 2.2 b:2012

Household and similar electrical appliances - Safety - Part 2-71: Particular requirements for electrical heating appliances for breeding and rearing animals

IEC 60335-2-71:2002+A1:2007+A2:2012 deals with the safety of all kinds of electrical heating appliances for rearing and breeding livestock. Examples are heat-radiating appliances, electrical sitting-hens, incubators, chicken breeding units and heating plates for animals. For room heaters, see IEC 60335-2-30. For flexible-sheet heating elements for room heating, see IEC 60335-2-96. This consolidated version consists of the second edition (2002), its amendment 1 (2007) and its amendment 2 (2012). Therefore, no need to order amendments in addition to this publication.


IEC 60335-2-87 Ed. 3.0 b:2016

Household and similar electrical appliances - Safety - Part 2-87: Particular requirements for electrical animal stunning equipment

IEC 60335-2-87:2016 deals with the safety of electric animal-stunning equipment the rated voltage of which is not more than 250 V for single-phase appliances and 480 V for other appliances. Battery-operated appliances and other d.c. supplied appliances are within the scope of this standard. Dual supply appliances, either mains-supplied or battery-operated, are regarded as battery-operated appliances when operated in the battery mode. This standard is applicable to electric animal-stunning equipment for industrial or commercial use, for use on farms or for use in areas where they may be a source of danger to the public. So far as is practical, this standard deals with the common hazards presented by these types of appliances. Examples of electric animal-stunning equipment within the scope of this standard are those used to stun: - bovines such as cattle, calves, cows, heifers and bulls; - ovines such as sheep and lambs; - caprines such as goats; - cervids such as deer; - solipeds such as horses, donkeys and mules; - birds such as chickens, turkeys and guinea fowl; - porcines such as pigs; - fur animals such as foxes, chinchilla, rabbits and possums; - mustelids such as mink and polecats and other ruminants such as camels. The following types of electric animal-stunning equipment are covered by this standard: manual, semi-automatic and automatic. This third edition cancels and replaces the second edition published in 2002 including its Amendment 1 (2007) and its Amendment 2 (2012). This edition constitutes a technical revision. The principal changes in this edition as compared with the second edition of IEC 60335-2-87 are as follows (minor changes are not listed): - Warning sign ISO 7010-W012 has been introduced (7.1, 7.6, 7.12, 7.14). - Reference to IEC 60068-2-32 has been replaced by reference to IEC 60068-2-31 (21.1). - Additional requirements for battery operated stunning have been transferred to Annex S (5.8.1, 7.1, 7.8, 7.12, 11.5, 16, 22.102, 25.5, 25.7, 25.20, 25.23, 25.101, 26.5). It was established on the basis of the fifth edition (2010) of that standard. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this standard be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of its publication. Key words: Electrical, Stunning Equipment. Animal, Electrode This publication is to be read in conjunction with IEC 60335-1:2010 .


IEC 60335-2-88 Ed. 2.0 en:2002

Household and similar electrical appliances - Safety - Part 2-88: Particular requirements for humidifiers intended for use with heating, ventilation, or air-conditioning systems

Deals with the safety of electric humidifiers intended for use with heating, ventilation, or air-conditioning systems in household, commercial, and light industrial applications (may include large stand alone commercial equipment)which operate according to the evaporative or atomization system, water-injection, steam and the like. The rated voltage being not more than 250 V for single-phase and 600 V for all other appliances.

This standard is also available from: BS


IEC 60335-2-98 Ed. 2.2 b:2008

Household and similar electrical appliances - Safety - Part 2-98: Particular requirements for humidifiers

"Deals with the safety of electric humidifiers for household and similar use, their rated voltage being not more than 250 V for single-phase and 480 V for other appliances. Examples of appliances that are within the scope of this standard are appliances that atomize water; appliances that evaporate water by heating and appliances that blow air through a moist element. This consolidated version consists of the second edition (2002), its amendment 1 (2004) and its amendment 2 (2008). Therefore, no need to order amendments in addition to this publication. "

This standard is also available from: BS  /  ON  /  AS