prEN ISO 22044

SLOVENSKI STANDARD
01-februar-2025
Komercialni hladilniki pijač - Razvrstitev, zahteve in preskusni pogoji (ISO/DIS
22044:2024)
Commercial beverage coolers - Classification, requirements and test conditions (ISO/DIS
22044:2024)
Gewerbliche Getränkekühler - Klassifikation, Anforderungen und Prüfbedingungen
(ISO/DIS 22044:2024)
Meubles frigorifiques de vente pour boissons - Classification, exigences et conditions
d'essai (ISO/DIS 22044:2024)
Ta slovenski standard je istoveten z: prEN ISO 22044
ICS:
97.130.20 Hladilne naprave za trgovine Commercial refrigerating
appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 22044
ISO/TC 86/SC 7
Commercial beverage coolers —
Secretariat: UNI
Classification, requirements and
Voting begins on:
test conditions
2024-12-04
Meubles frigorifiques de vente pour boissons — Classification,
Voting terminates on:
exigences et conditions d'essai
2025-02-26
ICS: 97.130.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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BEING ACCEPTABLE FOR INDUSTRIAL,
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USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
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RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 22044:2024(en)
DRAFT
ISO/DIS 22044:2024(en)
International
Standard
ISO/DIS 22044
ISO/TC 86/SC 7
Commercial beverage coolers —
Secretariat: UNI
Classification, requirements and
Voting begins on:
test conditions
Meubles frigorifiques de vente pour boissons — Classification,
Voting terminates on:
exigences et conditions d'essai
ICS: 97.130.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
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NATIONAL REGULATIONS.
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Published in Switzerland Reference number
ISO/DIS 22044:2024(en)
ii
ISO/DIS 22044:2024(en)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Types of commercial beverage coolers .1
3.2 Parts of commercial beverage coolers .2
3.3 Physical aspects and dimensions .3
3.4 Terms and definitions relating to performance characteristics .4
3.5 Terms and definitions related to test environment .5
4 Symbols and abbreviated terms. 5
5 Classification and requirements. 6
5.1 Classification according to temperature .6
5.2 Construction .6
5.2.1 General .6
5.2.2 Materials .7
5.2.3 Thermal insulation .7
5.2.4 Refrigerating system .8
5.2.5 Electrical components .8
6 Tests . 8
6.1 General .8
6.2 Tests outside test room .9
6.2.1 General .9
6.2.2 Seal test for doors and lids .9
6.2.3 Test on durability of door and lid .9
6.2.4 Linear dimensions, areas and volumes .10
6.2.5 General .10
6.2.6 Gross volume measurements .11
6.3 Tests inside test room .11
6.3.1 General .11
6.3.2 Test room condition . 12
6.3.3 M-can .16
6.3.4 Preparation of test commercial beverage cooler and general test procedures .16
6.3.5 Loading the commercial beverage cooler .18
6.3.6 Running in period . 25
6.3.7 Stable conditions . 25
6.3.8 Lighting and night-covers . . . 26
6.3.9 Power supply . . 26
6.3.10 Testing several commercial beverage coolers in the same room . 26
6.3.11 Test with M-cans . 26
6.3.12 Water vapour condensation test . 33
6.3.13 Calculation of specific energy consumption (SEC) . 34
6.3.14 Lighting test . 34
6.4 Test report . 34
7 Marking . .36
7.1 Load limit. 36
7.2 Marking plate .37
7.3 Information to be supplied by the manufacturer . 38
Annex A (informative) Commercial beverage cooler family .39
Annex B (normative) Equivalent volume calculation .40
Annex C (normative) TDA calculation . 41
Annex D (informative) Test for absence of odour and taste .45

iii
ISO/DIS 22044:2024(en)
Annex E (normative) Performance and energy rating of commercial beverage cooler .47
Annex F (informative) Lighting test .48
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 aimed to be covered .50
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 . .51
Bibliography .52

iv
ISO/DIS 22044:2024(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 44, Commercial and
professional refrigerating appliances and systems, performance and energy consumption, in accordance with
the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 22044:2021) which has been technically
revised.
The main changes are as follows:
— Addition of date of publication of standards referenced into this standard
— Editorial improvement by moving information about net volume calculation and gross volume
measurement from Annex B and Annex C into subclauses 6.2.5 and 6.2.6 just after 6.2.4 “Linear
dimensions, areas and volumes” and consequent renumbering of the figures and annexes
— Addition of Class K5 in Table 1 “Classification according to temperature”, in clause 6.3.11.3 Half reload
recovery test” and in clause B.2 “Calculation of equivalent volume”
— Addition of Annex ZA Relationship between this European Standard and the ecodesign requirements of
Commission Regulation (EU) No 2019/2024 OJEU L 315/313 aimed to be covered
— Addition of Annex ZB 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
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.

v
DRAFT International Standard ISO/DIS 22044:2024(en)
Commercial beverage coolers — Classification, requirements
and test conditions
1 Scope
This document specifies the classification for commercial beverage coolers and their requirements and test
methods. This document is applicable to integral refrigeration systems.
This document is not applicable to remote and secondary system cabinets.
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
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 and definitions
For the purposes of this document, the following terms and definitions 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/
3.1 Types of commercial beverage coolers
3.1.1
commercial beverage cooler
refrigerated cabinets to sell and/or display pre-packaged beverage products that are non-perishable,
designed to chill products loaded at ambient temperature to the defined storage temperature class within a
specified time and for which the customer is allowed direct access to the products
Note 1 to entry: In Annex A there is the designation of the commercial beverage cooler family.
Note 2 to entry: The customer is an organization or person that receives a product; customer can be internal or
external to the organization.
EXAMPLE Consumer, client, end-user, retailer, beneficiary and purchaser.

ISO/DIS 22044:2024(en)
3.1.2
vertical commercial beverage cooler
beverage cooler with overall height between 0,5 m and 2,2 m
3.1.3
semi-vertical commercial beverage cooler
vertical beverage cooler for which the overall height does not exceed 1,5 m and having either a vertical or
inclined display opening
3.1.4
horizontal commercial beverage cooler
beverage cooler with horizontal display opening on its top and accessible from above
3.1.5
open commercial beverage cooler
horizontal/vertical/semi-vertical beverage cooler where there are not barriers for the access to the
displayed products
Note 1 to entry: Do not consider night covers as a barrier for the access to the displayed products.
3.1.6
closed commercial beverage cooler
horizontal/vertical/semi-vertical beverage cooler where access to the displayed product is gained by
opening a door or a lid (transparent or solid)
3.2 Parts of commercial beverage coolers
3.2.1
air discharge
opening from which the air curtain emerges
3.2.2
air return
opening at which the air curtain flows back to the evaporator or heat exchanger inside the commercial
beverage cooler air ducts
3.2.3
shelf
surface excluding the base deck, on which the goods are displayed
3.2.4
night cover
cover permanently integrated into the commercial open beverage cooler used to reduce the heat ingress
(e.g. by infrared radiation or convection)
EXAMPLE Covers can be a night curtain, night blind, night lid.
3.2.5
front
side of the commercial beverage cooler facing the consumer
3.2.6
base deck
lowest display surface of a commercial beverage cooler

ISO/DIS 22044:2024(en)
3.3 Physical aspects and dimensions
3.3.1
refrigerated shelf area
refrigerated display area where the vertical clearance above any shelf or base deck is greater than or equal
to 125 mm, measured perpendicularly above the plane of the shelf or base deck and within the bounds of
any load limit
3.3.2
depth
horizontal distance, including rear spacers for air circulation channel, between the front and the rear of the
commercial beverage cooler
3.3.3
width
horizontal distance between the two external sides of the commercial beverage cooler
3.3.4
height
vertical distance from the floor to the top of the commercial beverage cooler
Note 1 to entry: If the commercial beverage cooler has adjustable feet, the height defined shall be the minimum and
the maximum height necessary at installation of the cooler.
3.3.5
load limit
boundary surface consisting of a plane or several planes within which all M-cans can be maintained within
the limits for the M-cans temperature class declared
3.3.6
load limit line
permanently marked boundary line denoting the edge of the load limit surface
3.3.7
net volume
storage volume inside the appliance which can be used for storage of products
Note 1 to entry: For the calculation method see Annex B.
3.3.8
gross volume
volume within the inside walls of the commercial beverage cooler or compartment, including internal
fittings, doors or lids, if any, with these being closed, and with the load limit being taken into account if the
commercial beverage cooler has no door or lid
3.3.9
equivalent volume
V
eq
reference volume corrected for compartment classification differences
3.3.10
total display area
TDA
total visible foodstuffs area, including visible area through the glazing, defined by the sum of horizontal and
vertical projected surface areas of the net volume
Note 1 to entry: For the calculation method see Annex D.
3.3.11
footprint
surface occupied by the commercial beverage cooler

ISO/DIS 22044:2024(en)
3.4 Terms and definitions relating to performance characteristics
3.4.1
air curtain
air flow going from the air discharge towards the air return, thereby limiting both heat and mass transfers
between the commercial beverage cooler's gross volume and the surrounding environment
3.4.2
normal conditions of use
operating conditions which exist when the commercial beverage cooler, including all permanently located
accessories, has been set up and situated in accordance with the recommendations of the manufacturer and
is in service
Note 1 to entry: The effects of actions by non-technical personnel for purposes of loading, unloading, cleaning,
defrosting, the manipulation of accessible controls and of any removable accessories etc., according to the
manufacturer's instructions are within this definition. The effects of actions resulting from interventions by technical
personnel for the purposes of maintenance or repair are outside this definition.
3.4.3
energy management device
EMD
electronic device that automatically controls the refrigeration system and/or other key components of the
commercial beverage cooler during the standby mode
EXAMPLE Lights, fans.
3.4.4
standby mode
state in which commercial beverage cooler's lighting, refrigeration and/or other energy-using systems are
automatically adjusted such that they consume less energy than they consume in an active mode
Note 1 to entry: In the case of commercial beverage coolers, equipped with an EMD and with night cover built in, or
night lid built in, the EMD standby mode is activated manually when the night curtain or night lid is down.
Note 2 to entry: In the case of commercial beverage coolers, equipped only with night cover built- in, or night lid built-
in for the energy consumption test refer to 6.3.8.
3.4.5
active mode
state in which the commercial beverage coolers are in the average temperature defined for the product class,
also lighting and/or other energy-using systems are on
3.4.6
EMD product average temperature
temperature that allows the commercial beverage cooler, that has been in standby mode for 12 h, to recover
the average product temperature defined for each product temperature class in a recovery time less than 4 h
3.4.7
half reload
capability of the beverage cooler to lower all product temperatures within a specified time after half of the
products are removed and reloaded with product at ambient temperature
3.4.8
defrosting
removal of frost, snow and ice from a commercial beverage cooler
3.4.9
automatic defrosting
defrosting where no action is necessary by the user to initiate the removal of frost accumulation and to
restore normal operation
Note 1 to entry: It includes automatic removal of defrost water.

ISO/DIS 22044:2024(en)
3.4.10
automatic removal of defrost water
removal and/or evaporation of defrost water that does not require any action by the user
3.4.11
manual removal of defrost water
removal of defrost water that requires an action by the user
3.4.12
specific energy consumption
SEC
index of the efficiency of the commercial beverage cooler (3.1.1), expressed as the ratio of TEC divided by
equivalent volume (3.3.9)
3 3
Note 1 to entry: SEC is expressed in kilowatt hours per 24 h per m [kWh/24 h·m ].
3.5 Terms and definitions related to test environment
3.5.1
M-can
test can used to simulate the product during tests, fitted with a temperature measuring device
3.5.2
climate class
classification of the test room climate according to the dry bulb temperature and relative humidity
3.5.3
M-cans temperature class
classification of test temperature according to temperatures of warmest and coldest M-cans during the
temperature test
3.5.4
commercial beverage cooler classification
designation given by the combination of climate class and M-cans temperature class
4 Symbols and abbreviated terms
t
running time — time during which compressor is running in normal condition within 24 h
run
t
stopping time — time during which compressor is not running (or solenoid valve is close) within 24 h
stop
t
defrost time — time during defrost during which compressor is not running (or solenoid valve is
deft
closed) or secondary refrigerant is generally not circulating, within 24 h, but not considered as
stopping time
t
pull down time – time to pull down the temperature of the beverages from the ambient temperature
pull
to the defined temperature class
t
half reload time – time to recover the beverage cooler temperature after the half reload with product
hr
at ambient temperature
t
time in which 90 % of a sudden temperature change of 20 °C is indicated, the measurement medium
being moderately agitated air (velocity 1 m/s)
Δt time between two consecutive measuring samples
N
number of measuring samples in 24 h
max
n
number of defrosts during 24 h
deft
ISO/DIS 22044:2024(en)
TEC total energy consumption in kWh per 24 h
SEC specific energy consumption for commercial beverage cooler expressed in kWh/24 h·m (TEC/V )
eq
t relative or percentage running time
rr
θ temperature
θ average mean temperature
m
θ highest temperature of warmest M-cans
ah
θ lowest temperature of coldest M-cans
b
V equivalent volume
eq
5 Classification and requirements
5.1 Classification according to temperature
The performance of commercial beverage cooler shall comply with one of the classifications defined in
Table 1. The performance shall be verified in accordance with the conditions and test methods specified in
the following clauses.
Table 1 — Classification according to temperature
Highest temperature, θ , of warm- Lowest temperature, θ , of coldest
ah b
Average temperature equal
Class est M-can colder than or equal to M-can warmer than or equal to
to or less than [°C]
[°C] [°C]
K +7,0 0,0 3,5
K +6,0 −1,0 2,5
K +1,0 −3,5 −1,0
K +9,0 1,0 +5,0
K 0,0 -6,0 -3,0
S Special classification
NOTE The M-can temperature classes are measured with an expanded measurement uncertainty of ±0,8 °C.
5.2 Construction
5.2.1 General
5.2.1.1 Strength and rigidity
The commercial beverage cooler and its parts shall be constructed with adequate strength and rigidity for
normal conditions of handling, transport and use and 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.

ISO/DIS 22044:2024(en)
5.2.1.2 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.
5.2.1.3 Condensate drainage
Where drains, drip trays or evaporation receptacles are fitted, they shall have ample capacity and shall be
easily accessible and cleanable.
5.2.1.4 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.
5.2.2 Materials
5.2.2.1 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 resistant to moisture and shall
neither be toxic nor contaminate them.
5.2.2.2 Wear resistance
Internal and external finishes shall be resistant to wear and capable of being cleaned effectively and
hygienically. Finishes shall not crack, chip, flake, rub off or soften under normal conditions of use or during
cleaning.
5.2.2.3 Corrosion resistance
Metal parts, used in the construction of commercial beverage coolers, shall have resistance to corrosion
appropriate to their location and function.
5.2.3 Thermal insulation
5.2.3.1 Efficiency
The thermal insulation shall be efficient and permanently fixed. In particular, the insulating material
shall not be subject to shrinkage and shall not allow under normal working conditions an accumulation of
moisture.
5.2.3.2 Vapour barrier
Suitable means shall be used to prevent deterioration of the thermal insulation by the ingress of moisture.
5.2.3.3 Containment of insulation material
Where the insulation space is vented to the inside, it shall be ensured that particles of the insulation material
cannot escape into the foodstuff display compartment.

ISO/DIS 22044:2024(en)
For fibrous insulation materials, it shall not be possible to insert a rigid probe of 1 mm diameter through any
aperture which allows access to the insulating material, the probe being applied with negligible force.
5.2.4 Refrigerating system
5.2.4.1 Design and construction
The design and construction of all parts of the refrigerating system subject to internal pressure shall take
into account the maximum working pressure to which they are subjected when the commercial beverage
cooler is in operation or at rest.
For commercial beverage coolers with components thereof which are charged with refrigerant prior to
transportation, the maximum ambient temperature during transit shall be taken into account. All refrigerant
containing components shall be in accordance with ISO 5149-2:2014.
5.2.4.2 Condensation
There shall be suitable means to prevent water condensed on cold surfaces of the commercial beverage
cooler and its parts from harmfully affecting the operation of the refrigerating system or its controls.
5.2.4.3 System protection
For commercial beverage cooler fitted with doors or lids, the refrigerating system shall suffer no damage
if any door or lid in the commercial beverage cooler is left open while the commercial beverage cooler
is operating in an ambient temperature corresponding to the climate class (see Table 1) for which the
commercial beverage cooler is intended.
When the door or lid is kept open under normal operating conditions (for example, during product loading)
or is left open accidentally, any automatic motor overload protective device may come into operation.
5.2.4.4 Refrigerant
When deciding on the refrigerant for the system, attention shall be given to the possible hazards associated
with the use of certain refrigerants and heat-transfer media or secondary refrigerant, due to their toxicity,
flammability etc. Guidance on this point is available in ISO 5149-2:2014.
5.2.5 Electrical components
Electrical components shall be in accordance with IEC 60335-2-89:2019 and IEC 60335-1:2020.
6 Tests
6.1 General
When the characteristics of a commercial beverage cooler are to be verified, all the tests and inspections
shall be applied to one and the same commercial beverage cooler. These tests and inspections may also be
made individually for the study of a particular characteristic.
Table 2 lists the tests and inspections. Commercial beverage cooler shall comply with the requirements
specified in this part of standard using the appropriate test method.

ISO/DIS 22044:2024(en)
Table 2 — Test summary
Requirement clause in
Tests and inspections Test method Test room
this document
Seal test — 6.2.2
Outside test room
Absence of odour and taste (not compulsory) — Annex E
(see 6.2)
Durability of door and lid
Temperature 5.1 6.3.11
Inside test room
Water vapour condensation 5.2.4.2 6.3.12
(see 6.3)
Energy consumption 6.3.13
Half reload recovery 6.3.11.3
6.2 Tests outside test room
6.2.1 General
The tests which may be carried out outside the test room deal with the inspection of construction
characteristics, physical dimensions and the absence of odour and taste.
6.2.2 Seal test for doors and lids
The effectiveness of doors or lids provided to ensure a seal shall be tested as follows (with the commercial
beverage cooler not running). See Figure 1.
Insert a strip of paper 50 mm wide, 0,08 mm thick and of a suitable length at any point of the seal. With the
door or lid closed normally on it the strip of paper shall not slide freely.
NOTE 1 Attention is drawn to the fact that some commercial beverage coolers having doors provided to ensure an
air seal are fitted with decompression valves which allow air to penetrate for a short period of time so that any drop in
pressure created inside the commercial beverage cooler can be compensated. No test is required for such valves.
NOTE 2 The most unfavourable points can be found by inspecting the contact of the seal with the commercial
beverage cooler closed and lighted from the inside.
6.2.3 Test on durability of door and lid
6.2.3.1 Test condition/preparation
The purpose of these tests, carried out using the following procedures, is to check the durability of the
hinges and handles of doors. The ambient temperature shall be between +16 °C and +32 °C. The refrigerating
appliance shall be switched off.
6.2.3.2 Opening sequence
The movement of the door shall be controlled from an angle of 0° to an angle of opening between 5° and
45°, followed by a free movement of the door, the controlled movement being approximately sinusoidal. The
opening of the door shall take place in the first quarter of the period of the cycle.
6.2.3.3 Closing sequence
The number of cycles per minute shall be 10 to 25. External doors shall withstand 100 000 opening and
closing operations without deterioration which could be prejudicial to the airtightness of the door.

ISO/DIS 22044:2024(en)
Key
1 door opening
2 door closing
3 angle of closing
4 pusher
5 taut cable
6 slack cable
Figure 1 — Durability of lids and doors
6.2.4 Linear dimensions, areas and volumes
Measurements shall be made with the commercial beverage cooler not in operation but situated in a place
where the temperature is maintained between 16 °C and 30 °C.
For commercial beverage cooler having detachable ends, overall dimensions are given with and without
ends. If the commercial beverage cooler includes jacks or other components for adjustment of height, the
height defined shall be the minimum height necessary at installation of the commercial beverage cooler.
When measuring the net volume parts necessary for the proper functioning of the commercial beverage
cooler, including shelves used in the calculation of the refrigerated shelf area, these shall be fitted as intended
and the volume representing the space occupied by these parts deducted.
6.2.5 General
The net volume (V ) shall be calculated as the sum of the individual volumes obtained as follows.
n
6.2.5.1 Calculation of net volume
— For shelves: by multiplying each refrigerated shelf area by the distance from the top of the shelf up to
10 mm from the next shelf top surface. For the top shelf the volume shall be obtained multiplying the
refrigerated shelf area by the distance up to the load limit.
— For horizontal cabinets: by multiplying each bottom basket area by the distance from internal bottom
of the basket up to 10 mm from the next top surface. For the top basket the volume shall be obtained
multiplying the bottom basket area by the distance up to the load limit.
— For horizontal cabinets without baskets: by multiplying internal floor area by the distance from internal
floor up to load line. Each individual volume above a shelf is the vertical projection of the refrigerated
shelf area.
Each of the individual volumes shall be expressed in litres, to one decimal place. The net volume shall be
rounded to one decimal place.
ISO/DIS 22044:2024(en)
The net volume shall be calculated by summing-up all individual volumes.
The volume of constructional shelf support protuberances shall be excluded from the volume calculation
(see Figure 2). Compartment(s) of a combined refrigerated cabinet that are not foreseen for storage are not
subjected to calculation of net volume.
a) b)
c) d)
Key
R
L width of the shelf
Figure 2 — Net volume calculation
6.2.6 Gross volume measurements
All measured compartment volumes shall be rounded to the nearest 0,1 l. The gross volume (V ) shall be the
G
sum of these rounded compartment volumes and the declared value for total volume shall be rounded to the
nearest whole litres.
The gross volume shall take into account the exact shapes of the walls including all depressions or projections
neglecting load lines. When the gross volume is determined, internal fittings such as shelves, baskets,
removable partitions, containers and interior light housings shall be considered as not being in place.
The items below shall be considered as being in place (if present) and their volumes deducted:
— the volume of control housings;
— the volume of the evaporator space (which includes any space made inaccessible by the evaporator);
— the volume of air ducts required for proper cooling and operation of the unit;
— space occupied by shelves moulded into the inner door panel.
6.3 Tests inside test room
6.3.1 General
The tests which are carried out inside the test room deal with the measurement of the following
characteristics:
— temperature;
ISO/DIS 22044:2024(en)
— water vapour condensation;
— electrical energy consumption;
— reload test.
These measurements should be made simultaneously.
In the following, general testing conditions which are common for all tests carried out inside the test room
are defined. These conditions concern the test room, the test and M-can, and the measuring instruments.
6.3.2 Test room condition
6.3.2.1 General design, walls, floor and radiant heat
The test room shall be a parallelepiped space in which two of the opposite side walls, referred to as the
discharge technical side wall and the return technical side wall, are designed to create an even, horizontal
air flow within the test room. By con
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