oSIST prEN ISO 23953-2:2022

Refrigerated display cabinets - Part 2: Classification, requirements and test conditions (ISO/DIS 23953-2:2021)

Verkaufskühlmöbel - Teil 2: Klassifizierung, Anforderungen und Prüfbedingungen (ISO/DIS 23953‑2:2021)

Meubles frigorifiques de vente - Partie 2: Classification, exigences et méthodes d'essai (ISO/DIS 23953-2:2021)

Razstavne hladilne omare - 2. del: Razvrščanje, zahteve in preskusni pogoji (ISO/DIS 23953-2:2021)

General Information

• Status: Not Published
• Public Enquiry End Date: 20-Mar-2022
• ICS: 97.130.20 - Commercial refrigerating appliances
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 29-Dec-2021
• Due Date: 18-May-2022
• Directive: 2019/2018 - COMMISSION DELEGATED REGULATION (EU) 2019/2018 of 11 March 2019 supplementing Regulation (EU) 2017/1369 of the European Parliament and of the Council with regard to energy labelling of refrigerating appliances with a direct sales function
• Directive: 2019/2024 - COMMISSION REGULATION (EU) 2019/2024 of 1 October 2019 laying down ecodesign requirements for refrigerating appliances with a direct sales function pursuant to Directive 2009/125/EC of the European Parliament and of the Council
• Mandate: M/XXX - standardisation request to the European Committee for Standardisation as regards postal services and the improvement of quality of service in support of Directive 97/67/EC of the European Parliament and of the Council of 15 December 1997
• Ref Project: prEN ISO 23953-2 - Refrigerated display cabinets - Part 2: Classification, requirements and test conditions (ISO/DIS 23953-2:2021)

RELATIONS

• Revised: SIST EN ISO 23953-2:2016 - Refrigerated display cabinets - Part 2: Classification, requirements and test conditions (ISO 23953-2:2015)
• Effective Date: 24-Mar-2020

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 23953-2:2022
01-marec-2022
Razstavne hladilne omare - 2. del: Razvrščanje, zahteve in preskusni pogoji
(ISO/DIS 23953-2:2021)

Refrigerated display cabinets - Part 2: Classification, requirements and test conditions

(ISO/DIS 23953-2:2021)
Verkaufskühlmöbel - Teil 2: Klassifizierung, Anforderungen und Prüfbedingungen
(ISO/DIS 23953‑2:2021)

Meubles frigorifiques de vente - Partie 2: Classification, exigences et méthodes d'essai

(ISO/DIS 23953-2:2021)
Ta slovenski standard je istoveten z: prEN ISO 23953-2
ICS:
97.130.20 Hladilne naprave za trgovine Commercial refrigerating
appliances
oSIST prEN ISO 23953-2:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 23953-2:2022
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oSIST prEN ISO 23953-2:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23953-2
ISO/TC 86/SC 7 Secretariat: UNI
Voting begins on: Voting terminates on:
2021-12-29 2022-03-23
Refrigerated display cabinets —
Part 2:
Classification, requirements and test conditions
Meubles frigorifiques de vente —
Partie 2: Classification, exigences et méthodes d'essai
ICS: 97.130.20
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 23953-2:2021(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2021
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
© ISO 2021 – All rights reserved
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms , definitions, symbols and abbreviated terms ................................................................................................... 1

3.1 General ........................................................................................................................................................................................................... 1

3.2 Symbols ......................................................................................................................................................................................................... 2

3.2.1 Compression-type refrigeration systems .................................................................................................... 3

3.2.2 Indirect refrigeration-type systems ................................................................................................................. 3

4 Requirements .......................................................................................................................................................................................................... 4

4.1 Construction ............................................................................................................................................................................................. 4

4.1.1 General ........................................................................................................................................................................................ 4

4.1.2 Materials .................................................................................................................................................................................... 5

4.1.3 Thermal insulation ........................................................................................................................................................... 6

4.1.4 Refrigerating system ...................................................................................................................................................... 6

4.1.5 Electrical components ................................................................................................................................................... 7

4.1.6 Temperature display ....................................................................................................................................................... 7

4.2 Operating characteristics ............................................................................................................................................................. 8

4.2.1 Absence of odour and taste ....................................................................................................................................... 8

4.2.2 Classification according to temperature....................................................................................................... 8

4.2.3 Defrosting ................................................................................................................................................................................. 9

4.2.4 Water vapour condensation ..................................................................................................................................... 9

4.2.5 Energy consumption ....................................................................................................................................................... 9

4.2.6 Specific Energy Consumption ................................................................................................................................. 9

5 Tests ...............................................................................................................................................................................................................................10

5.1 General ........................................................................................................................................................................................................ 10

5.2 Tests outside test room ................................................................................................................................................................ 10

5.2.1 Seal test for doors and lids on low temperature applications ................................................ 10

5.2.2 Linear dimensions, areas ......................................................................................................................................... 10

5.3 Tests inside test room ................................................................................................................................................................... 11

5.3.1 General ..................................................................................................................................................................................... 11

5.3.2 General conditions ......................................................................................................................................................... 11

5.3.3 Preparation of test cabinet and general test procedures ............................................................ 21

5.3.4 Temperature test .............................................................................................................................................................48

5.3.5 Water vapour condensation test ....................................................................................................................... 55

5.3.6 Electrical energy consumption test ...............................................................................................................56

5.3.7 Heat extraction rate measurement when condensing unit is remote from

cabinet ......................................................................................................................................................................................58

6 Test report ...............................................................................................................................................................................................................68

6.1 General ........................................................................................................................................................................................................68

6.2 Tests outside test room ................................................................................................................................................................68

6.2.1 Seal test of doors and lids ........................................................................................................................................68

6.2.2 Linear dimensions, areas and volumes .......................................................................................................68

6.2.3 Test for absence of odour and taste ................................................................................................................ 69

6.3 Tests inside test room ...................................................................................................................................................................69

6.3.1 General test conditions .............................................................................................................................................. 69

6.3.2 Cabinet preparation ...................................................................................................................................................... 69

6.3.3 Temperature test ............................................................................................................................................................. 70

6.3.4 Water vapour condensation test ....................................................................................................................... 70

6.3.5 Electrical energy consumption test ............................................................................................................... 71

6.3.6 Heat extraction rate measurement when the condensing unit is remote

from the cabinet ............................................................................................................................................................... 71

7 Marking ........................................................................................................................................... ............................................................................72

iii
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)

7.1 Load limit..................................................................................................................................................................................................72

7.2 Marking plate .........................................................................................................................................................................................74

7.3 Information to be supplied by the manufacturer ................................................................................................. 75

Annex A (normative) Total display area (TDA) .....................................................................................................................................76

Annex B (informative) Comparison between laboratory and in-store conditions ..........................................89

Annex C (informative) Test for absence of odour and taste .....................................................................................................91

Annex D (normative) Performance and energy rating of commercial refrigerated display

cabinets .......................................................................................................................................................................................................................93

Annex E (normative) M and N coefficient values ............................................................................................................................. 108

Annex ZA (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) No 2019/2024 OJEU L 315/313 aimed

to be covered ..................................................................................................................................................................................................... 109

Annex ZB (informative) Relationship between this European Standard and the energy

labelling requirements of Commission Delegated Regulation (EU) No 2019/2018

OJEU L 315/155 aimed to be covered .......................................................................................................................................110

Bibliography ......................................................................................................................................................................................................................... 112

© ISO 2021 – All rights reserved
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 86, Refrigeration and air-conditioning,

Subcommittee SC 7, Testing and rating of commercial refrigerated display cabinets and Technical

Committee CEN/TC 44, Commercial refrigerated cabinets, catering refrigerating appliances and industrial

refrigeration in collaboration.

This third edition cancels and replaces the second edition (ISO 23953-2:2015), which has been

technically revised.
The main changes are as follows:

— Scope: the standard is not applicable to commercial beverage coolers covered by ISO 22044, ice

cream freezers covered by ISO 22043;

— Additional extrapolation methods for liquid cooled condensing units, depth, height, length and plug-

in alternative components;
— NEW TYPE: Liquid cooled condensing unit (semi plug-in);
— TDA for new types of cabinets;
— Testing repeatability: improvement;
— Testing: Standard Rating Conditions and Configurations;
— Testing: Mass flow with EEV only, to adapt std to technological improvement;
— Testing: Revised CPEC also for brine / indirect cooling;
— Testing: clarification on requirements for refrigerant with glide;

— Marking, Load limits, Multiple loading line for different M package temperature.

A list of all parts in the ISO 23953 series can be found on the ISO website.
© ISO 2021 – All rights reserved
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2021 – All rights reserved
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oSIST prEN ISO 23953-2:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 23953-2:2021(E)
Refrigerated display cabinets —
Part 2:
Classification, requirements and test conditions
1 Scope

This part of ISO 23953 specifies requirements for the construction, characteristics and performance

of refrigerated display cabinets used in the sale and display of foodstuffs. It specifies test conditions

and methods for checking that the requirements have been satisfied, as well as classification of the

cabinets, their marking and the list of their characteristics to be declared by the manufacturer. It is

not applicable to refrigerated vending machines, commercial beverage coolers covered by ISO 22044,

ice cream freezers covered by ISO 22043. It is also not applicable to cabinets intended for storage or

cabinets intended for use, for instance, in catering or non-retail refrigerated applications.

The standard is not intended to specify storage temperature for foodstuff.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 817:2014, Refrigerants — Designation and safety classification

ISO 5149-2:2014, Refrigerating systems and heat pumps — Safety and environmental requirements — Part

2: Design, construction, testing, marking and documentation
ISO 23953-1:20xx, Refrigerated display cabinets — Part 1: Vocabulary

IEC 60335-1:2020, Household and similar electrical appliances - Safety - Part 1: General requirements

IEC 60335-2-89:2019, Household and similar electrical appliances - Safety - Part 2-89: Particular

requirements for commercial refrigerating appliances and ice-makers with an incorporated or remote

refrigerant unit or motor-compressor
3 Terms , definitions, symbols and abbreviated terms
3.1 General

For the purposes of this document, the terms and definitions given in ISO 23953-1:20xx apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
1) Under preparation.
© ISO 2021 – All rights reserved
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
3.2 Symbols

t running time — time during which compressor is running (or solenoid valve is open) or sec-

run

ondary refrigerant is circulating (or solenoid valve is open), within 24 h, expressed in hours

t stopping time — time during which compressor is not running (or solenoid valve is closed)

stop

or secondary refrigerant is not circulating (or solenoid valve is closed), within 24 h and ex-

cluding defrost time, expressed in hours

t defrost time — time during defrost during which compressor is not running (or solenoid

deft

valve is closed) or secondary refrigerant is generally not circulating, within 24 h, but not

considered as stopping time, expressed in hours

q mass flow rate of liquid refrigerant or secondary refrigerant in kilograms per second

Δt time between two consecutive measuring samples, in hours
N number of measuring samples in 24 hours
max
n number of defrosts during 24 h
deft
Φ heat extraction rate during a whole day excepting defrost time, in kilowatts
Φ heat extraction rate during a whole day excepting defrost time, in kilowatts
24-deft

DEC direct daily electrical energy consumption, in kilowatt hours per 24 h period

DECR revised direct daily electrical energy consumption, in kilowatt hours per 24 h period

REC refrigeration daily electrical energy consumption, in kilowatt hours per 24 h period, for

remote cabinet for compression-type refrigerating system

REC refrigeration daily electrical energy consumption, in kilowatt hours per 24 h period, for

remote cabinet for indirect refrigerating system

RECR revised refrigeration daily electrical energy consumption, in kilowatt hours per 24 h period,

for remote cabinet for compression-type refrigerating system

RECA additional refrigeration daily electrical energy consumption, in kilowatt hours per 24 h pe-

riod, for remote cabinet for compression-type refrigerating system

RECR revised refrigeration daily electrical energy consumption, in kilowatt hours per 24 h period,

for remote cabinet for indirect refrigerating system

RECA additional refrigeration daily electrical energy consumption, in kilowatt hours per 24 h pe-

riod, for remote cabinet for indirect refrigerating system
TEC total daily electrical energy consumption in kilowatt hours per 24 h period

TECR total revised daily electrical energy consumption in kilowatt hours per 24 h period

TDA total display area, in square meters (see Annex A)

SEC TEC/TDA Specific Daily Electrical Energy Consumption (SEC) for Refrigerated Display Cabinet

expressed in kilowatt hours per 24h per square meters
t relative or percentage running time:
t t
run run
t = =
tt+ 24−t
runstop deft
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
where
tt++th=24
runstopdeft
Φ instant heat extraction rate in kilowatts
3.2.1 Compression-type refrigeration systems

h , h specific enthalpy in kilojoules per kilogram, where state at point 8 corresponds to refrigerant

8 4
outlet, and state at point 4 to refrigerant inlet, of cabinet
θ refrigerant temperature at evaporator outlet, in degrees Celsius
θ refrigerant temperature at cabinet outlet, in degrees Celsius
θ refrigerant temperature at cabinet inlet, in degrees Celsius
θ refrigerant temperature at evaporator inlet, in degrees Celsius

θ The evaporating temperature is calculated as the average of θ and θ obtained from

mrun dew bub
pressure p8 and averaged over the t period, in degrees Celsius
run

θ The condensing temperature is calculated as the average of θ and θ obtained from

cond bub dew
pressure p4 and averaged over the t period, in degrees Celsius
run

θ evaporating temperature calculated as the average of θ and θ obtained from pressure

min dew bub

p8 by referring to table of saturation temperature in use and averaged over the last 10 % of

all t periods in degrees Celsius
run
T = θ + 273,15 in Kelvin
mrun mrun
3.2.2 Indirect refrigeration-type systems
θ secondary refrigerant temperature at cabinet inlet, in degrees Celsius
θ secondary refrigerant temperature at cabinet outlet, in degrees Celsius
θ secondary refrigerant median temperature, in degrees Celsius (θ + θ )/2
i o

θ arithmetic average of the secondary refrigerant median temperature (θ) during t , in

mrun run
degrees Celsius

q instant value of the secondary refrigerant mass flow during t , in kilograms per second

L run

c specific heat of secondary refrigerant, in kilojoules per kilogram per degree Celsius at cabinet

inlet

c specific heat of the secondary refrigerant, in kilojoules per kilogram per degree Celsius, at

cabinet outlet

p − p pressure drop between inlet and outlet of cabinet during t , in kilo Pascals

irun orun run

CPEC pumping electrical energy consumption expressed in kilowatt hours per 24 h period

v specific volume of secondary refrigerant, in cubic metres per kilogram
(simplification: v = const. = 0,001 m /kg)
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
4 Requirements
4.1 Construction
4.1.1 General
4.1.1.1 Strength and rigidity

The cabinet and its parts shall be constructed with adequate strength and rigidity for normal conditions

of handling, transport and use. Attention shall be given to the following:

a) interior fittings, including shelves, baskets, rails, etc. and their supports, shall be sufficiently strong

for the duty required;

b) where sliding shelves, baskets, trays or drawers are fitted they shall retain their shape and ease of

movement when fully loaded;

c) any fitments which are provided with stops to prevent accidental removal shall be self-supporting

when fully loaded and withdrawn to the limit of the stops;
d) stops.
4.1.1.2 Pipes and connections

Pipes and connections to moving or resiliently mounted parts shall be arranged so as not to foul or

transmit harmful vibrations to other parts. All other pipes and connections shall be securely anchored

and sufficient free length and/or vibration eliminators shall be provided to prevent failure due to

fatigue. Where necessary, pipes and valves shall be adequately thermally insulated.

4.1.1.3 Condensate drainage

Where drains, drip trays or evaporation receptacles are fitted, they shall have ample capacity.

NOTE Drains, drip trays or evaporation receptacles are intended to be easily accessible and cleanable.

Any condensate or defrost water receptacle, or group of receptacles, requiring to be emptied manually

shall have a capacity equivalent to at least 48 h of normal operation in the appropriate climate class for

which the cabinet is intended.
4.1.1.4 Closed refrigerated cabinets (self-service type)
Closed refrigerated cabinets shall meet certain special requirements as follows.
Hinged lids and doors shall be opened by different angles of at least 60°.

Transparent doors and lids shall be condensate-free at the climate class specified by the manufacturer.

Door fasteners and hinges under normal conditions of use shall be smooth and positive in action and

designed to function properly without undue wear.

When any doors or lids provided to ensure an air seal to the refrigerated space are closed, there shall be

no undue leakage of ambient air into the interior.
The doors or lids shall not open of their own accord.

The gasket shall be made from a material whose characteristics are compatible with the operating

conditions (especially temperatures). If the fastening device is mechanical, a stop or other means shall

be provided to prevent the gasket from being excessively deformed.
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oSIST prEN ISO 23953-2:2022
ISO/DIS 23953-2:2021(E)
4.1.1.5 Joints and seams

All construction joints and seams within the net volume shall prevent the accumulation of potentially

contaminating substances.

All construction joints and seams within the net volume shall permit the easy removal of any deposits

of potentially contaminating substances.
4.1.1.6 Sneeze guard

The front façade constitutes a guard against risks of contamination emanating from consumers through

handling, coughing, etc. in case of display and sale of unpacked foodstuffs.

For this, the sum of vertical dimension A and horizontal dimension B as shown in Figure 1 shall be not

less than 1 500 mm.
Key
A vertical dimension
B horizontal dimension
Figure 1 — Dimensions for sneeze guard
4.1.2 Materials
4.1.2.1 General

The materials shall be durable and shall not favour the development of mould or emit odours.

Under normal conditions of use, materials in contact with foodstuffs shall be resi

...