EN IEC 62947:2022/prA1:2026

• Status: Not Published
• Publication Date: 02-Mar-2028
• ICS: 97.180 - Miscellaneous domestic and commercial equipment
• Technical Committee: CLC/TC 59X - Consumer information related to household electrical appliances
• Drafting Committee: IEC/SC 59L - IEC_SC_59L
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 14-Aug-2026
• Due Date: 29-Mar-2024
• Completion Date: 14-Aug-2026
• Ref Project: SIST EN IEC 62947:2023/oprA1:2026 - Amendment 1 - Electrically operated spray seat for household and similar use - Methods for measuring the performance - General test methods of spray seats

• Amends: EN IEC 62947:2022 - Electrically operated spray seats for household and similar use - Methods for measuring the performance - General test methods of spray seats
• Effective Date: 03-Jan-2023

EN IEC 62947:2022/prA1:2026 is Amendment 1 to the standard on electrically operated spray seats for household and similar use. It updates the methods used to measure spray-seat performance, heated-seat performance, and energy and water consumption, and it adds a thermography-based method for heated-seat measurement. It is aimed at manufacturers, test laboratories, quality teams, and anyone who needs to verify or compare spray-seat performance in practice.

What does EN IEC 62947:2022/prA1:2026 specify?

EN IEC 62947:2022/prA1:2026 specifies changes to the test methods for electrically operated spray seats for household and similar use. The amendment is organized as targeted revisions to individual clauses, figure callouts, and annexes, rather than a full rewrite of the base document.

Annex	What it covers
Annex A	Preparation of test media for measuring spray performance
Annex B	Preparation of test media for measuring spray performance
Annex E	Thermography measurement for heated seat

The amendment touches Clause 4.4, several subclauses in Clause 5 on spray performance, Clause 6.1.4 on heated-seat performance, Clause 8.1.3.2 on energy and water consumption, and the test-preparation annexes. In practice, that means users need to apply the updated figures, dimensions, references and the new thermography method when testing or reporting results.

What are the key requirements of EN IEC 62947:2022/prA1:2026?

EN IEC 62947:2022/prA1:2026 mainly updates how the existing test methods are applied, and it adds a new way to measure heated-seat performance. The most important points are the corrected test references and the added thermography procedure.

Spray test conditions and figures

Clause 4.4 adds a note that national regulations and standards exist for protection against pollution by backflow. In practice, users must check local requirements when setting up or interpreting tests for water-related parts of the product.

Clauses 5.1.2 and 5.2.2 correct figure labels in the spray-performance methods, including the spray emission and spray temperature-spray stability measurement methods under spray pressure change. This matters because the test method relies on the correct timing and variable notation in the figures.

Clauses 5.4.1 and 5.5.1 update the stated outer dimensions from 60 mm × 70 mm to 60 mm × 80 mm. That affects the physical setup used for the relevant spray-performance measurements.

Heated-seat performance

Clause 6.1.4 adds a reference to Annex E for an alternative thermography measurement of heated-seat performance. This gives laboratories another way to measure seat temperature distribution instead of relying only on point measurements.

Annex E requires a calibrated thermal viewer (THV) traceable to national or international standards, placed perpendicular above the seat opening with the full seat in view. It also requires control of reflections, emissivity, and measurement-area definition. In practice, this is what makes the thermal image usable for repeatable testing.

Measurement procedure and reporting

Annex E requires conditioning the spray seat for at least 60 minutes at the specified ambient temperature with the heater off before measurement. For long-term measurement, the average temperature is recorded at intervals not exceeding 10 s until a stable condition is reached, or until 60 minutes.

For short-term measurement, recording starts at activation and continues at intervals not exceeding 1 s for 180 s. The annex also defines what to report: average heated-seat temperature, unevenness of the seat temperature, and reaction time. That gives users a consistent set of outputs for test reports and product comparisons.

Energy and water consumption

Clause 8.1.3.2 corrects the internal test reference for the energy and water consumption section. In practice, this keeps the measurement sequence aligned with the intended subtest.

What terms does EN IEC 62947:2022/prA1:2026 define?

• Thermal viewer (THV) - A non-contact thermal imaging device used in Annex E to assess heated-seat temperature distribution.
• Thermocouple (TC) - A contact temperature sensor used as the comparison method against THV measurements.
• Stable condition - The state in which the average temperature of the calculation area varies by no more than 1.0 K over a continuous 10-minute period.
• Calculation area - The part of the seat surface used for THV recording and result calculation, based on the defined measurement area.
• Reaction time - The elapsed time from heater activation until the calculation-area average temperature first reaches the heated-seat average minus 3.0 K.
• Unevenness of the seat temperature - The temperature spread in the calculation area, expressed as the difference between the 95th and 5th percentile temperatures.

Who uses EN IEC 62947:2022/prA1:2026?

EN IEC 62947:2022/prA1:2026 is used by manufacturers of electrically operated spray seats, test laboratories, certification bodies, and quality or compliance teams. It is also relevant to buyers and specifiers who need to compare products on the same performance basis. The document supports design verification, type testing, and reporting of spray, heated-seat, and consumption measurements.

What changed in EN IEC 62947:2022/prA1:2026 from the previous edition?

EN IEC 62947:2022/prA1:2026 is Amendment 1 to EN IEC 62947:2022. The amendment:

• adds a note in Clause 4.4 on backflow pollution protection and national requirements
• corrects figure labels in Clauses 5.1.2 and 5.2.2
• updates dimensions in Clauses 5.4.1 and 5.5.1
• adds a reference to Annex E in Clause 6.1.4 for thermography measurement
• corrects the internal test reference in Clause 8.1.3.2
• updates Annex A and Annex B references and labels
• adds a new normative annex for thermography measurement for heated seat

What does the EN IEC 62947:2022/prA1:2026 document contain?

The amendment contains clause-by-clause corrections, updated figure callouts, and revised dimensions for spray-performance testing. It also adds a full thermography method for heated-seat assessment, including setup, measurement-area definition, exclusion zones, measurement timing, and result calculations.

The added annex includes practical test setup guidance, such as THV positioning, background control, emissivity handling, and validation of the measurement reading. It also includes figures that show the measurement area and how to derive the calculation area. For users, this is the part that turns the amendment from a wording update into a usable test method.

SLOVENSKI STANDARD
01-oktober-2026
Električna straniščna sedala s tušem za gospodinjsko in podobno uporabo -
Metode za merjenje učinkovitost delovanja - Splošne preskusne metode za sedala
s tušem - Dopolnilo A1
Amendment 1 - Electrically operated spray seat for household and similar use - Methods
for measuring the performance - General test methods of spray seats
Sièges de toilettes électriques à pulvérisation d'eau pour usages domestiques et
analogues - Méthodes de mesure de l'aptitude à la fonction - Méthodes d'essai
générales des sièges de toilettes à pulvérisation d'eau
Ta slovenski standard je istoveten z: EN IEC 62947:2022/prA1:2026
ICS:
97.180 Razna oprema za dom in Miscellaneous domestic and
trgovino commercial equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

59L/316/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62947/AMD1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-08-14 2026-11-06
SUPERSEDES DOCUMENTS:
59L/308/CD, 59L/314/CC
IEC SC 59L : SMALL HOUSEHOLD APPLIANCES
SECRETARIAT: SECRETARY:
Italy Mr Davide Pietrosemoli
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
Environment
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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CENELEC, is drawn to the fact that this Committee Draft for
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The CENELEC members are invited to vote through the
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This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Amendment 1 - Electrically operated spray seat for household and similar use - Methods for measuring
the performance - General test methods of spray seats

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
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IEC CDV 62947/AMD1 © IEC 2026
1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
2 ____________
4 ELECTRICALLY OPERATED SPRAY SEATS FOR HOUSEHOLD AND
5 SIMILAR USE – METHODS FOR MEASURING THE PERFORMANCE –
6 GENERAL TEST METHODS OF SPRAY SEATS
8 AMENDMENT 1
10 FOREWORD
11 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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39 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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46 not be held responsible for identifying any or all such patent rights.
47 Amendment 1 to IEC 62947 :2022 has been prepared by subcommittee 59L: Small household
48 appliances, of IEC technical committee 59: Performance of household and similar electrical
49 appliances.
50 The text of this Amendment is based on the following documents:
Draft Report on voting
59L/XX/XXXX 59L/XX/XXX
52 Full information on the voting for its approval can be found in the report on voting indicated in
53 the above table.
IEC CDV 62947/AMD1 © IEC 2026
54 The language used for the development of this Amendment is English.
55 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
56 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
57 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
58 described in greater detail at www.iec.ch/publications/.
59 The committee has decided that the contents of this document will remain unchanged until the
60 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
61 specific document. At this date, the document will be
62 • reconfirmed,
63 • withdrawn, or
64 • revised.
IEC CDV 62947/AMD1 © IEC 2026
66 1 General test conditions
67 4.4 Add the following note at the end of the subclause
68 NOTE For protection against pollution by backflow national regulations and standards exist.
69 2 Spray performance
70 5.1.2 Replace the “T” in the Figure 3 by “T ”
range
72 Figure 3 – Spray emission less than 30 s
73 5.2.2 Replace the “T +5” in the Figure 4 by “t +5”
3K 3Ka
75 Figure 4 – Spray temperature-spray stability measurement method
76 under spray pressure change, minimum to maximum
77 Replace the “T +5” in the Figure 5 by “t +5”
3K 3Ka
IEC CDV 62947/AMD1 © IEC 2026
79 Figure 5 –Spray temperature-spray stability measurement method
80 under spray pressure change, maximum to minimum
81 5.4.1 Replace the “outer dimensions of 60 mm × 70 mm” in the third paragraph by “outer
82 dimensions of 60 mm × 80 mm”
83 5.5.1 Replace the “60 mm × 70 mm” in the second paragraph by “60 mm × 80 mm”
84 3 Heated seat performance
85 6.1.4 Add the following at the end of last paragraph:
86 For alternative thermography measurement, Annex E can be referred to.
87 8 Energy consumption and water consumption
88 8.1.3.2 Replace the “during the test of 8.1.1.1” by “during the test of 8.1.1.2”
89 Annex A - Preparation of test media for measuring spray performance
90 A.4 Replace the “as shown in Figure B.3” in the third paragraph by “as shown in Figure
91 A.2”
92 Annex B - Preparation of test media for measuring spray performance
93 Replace the “Cleansing point” in the "Figure B.3 by “Spray receiving point”
IEC CDV 62947/AMD1 © IEC 2026
94 ”
95 Figure B.3 – Temperature measurement for wide spray
97 Annex
...