Amendment 1 - Household refrigerating appliances - Characteristics and test methods - Part 2: Performance requirements

Amendement 1 - Appareils de réfrigération à usage ménager - Caractéristiques et méthodes d'essai - Partie 2: Exigences de performances

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Publication Date
29-Nov-2020
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Completion Date
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IEC 62552-2:2015/AMD1:2020 - Amendment 1 - Household refrigerating appliances - Characteristics and test methods - Part 2: Performance requirements
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IEC 62552-2
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 1
AM ENDEMENT 1
Household refrigerating appliances – Characteristics and test methods –
Part 2: Performance requirements
Appareils de réfrigération à usage ménager – Caractéristiques et méthodes
d'essai –
Partie 2 – Exigences de performances
IEC 62552-2:2015-02/AMD1:2020-11(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62552-2
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 1
AM ENDEMENT 1
Household refrigerating appliances – Characteristics and test methods –
Part 2: Performance requirements
Appareils de réfrigération à usage ménager – Caractéristiques et méthodes
d'essai –
Partie 2 – Exigences de performances
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.030 ISBN 978-2-8322-9067-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62552-2:2015/AMD1:2020
© IEC 2020
FOREWORD

This amendment has been prepared by subcommittee 59M: Performance of electrical household

and similar cooling and freezing appliances, of IEC technical committee 59: Performance of

household and similar electrical appliances.
The text of this amendment is based on the following documents:
FDIS Report on voting
59M/127/FDIS 59M/133/RVD

Full information on the voting for the approval of this amendment can be found in the report on

voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this document using a colour printer.

_____________
1 Scope
Replace the first paragraph with the following new content:

This part of IEC 62552 specifies the essential characteristics of household and similar

refrigerating appliances cooled by internal natural convection or forced air circulation, and

establishes test methods for checking these characteristics.
---------------------- Page: 4 ----------------------
IEC 62552-2:2015/AMD1:2020 – 3 –
© IEC 2020
Table 1 – Test summary
Replace Table 1 with the following new table:
Table 1 – Performance test summary
Clause / Ambient Pantry Fresh Chill Zero star 1 and 3 and 4 Temperature
Annex and cellar food 2 star star requirements
and Test after test has
started
Clause 6 Various Packages No Type b No 1 star: Type a To hold initial
Storage values
Other: Type a
or b
Initial temp Mean Instant Mean Max
Clause 7 25 °C Packages No Type b No No No For test load
Cooling
final only
Initial temp Table 2 +4 °C ± Table 2 Maximum/ Average/
capacity
minimum minimum
0,5 K
Clause 8 25 °C Packages M-packages only Type b No Type a Yes excursion
Freezing and final
Type b
capacity
Initial temp Table 2 Not Maximum/minimum
measured
Clause 9 25 °C Packages No No
Auto
Initial temp As for Table 2 Maximum/minimum
ice-making
Annex A Max Packages No Final only
Pull-down
Initial temp Maximum temperature according climate class rating
Annex C 25 °C Packages No Type b No Type a For –18 °C
compartments
Temp rise
Initial temp Not specified –18 °C
only
Annex D 25 °C for Packages No To hold initial
Condensa- SN and N values
Initial temp
≤ energy test temperatures as in Table 1 in IEC 62552-3:2015
tion 32 °C for
ST and T
NOTE 1 For definitions of symbols, see 3.7 in IEC 62552-1:2015.

NOTE 2 In the event of any discrepancy between data in this table and the individual test procedures, the test

procedures take precedence.
NOTE 3 Wine storage test parameters are specified in Annex B.
Table 2 – Compartment temperatures
Replace the content of footnote b with the following new content:

During a defrost and recovery period, these storage temperatures of frost-free refrigerating appliances are

permitted to rise by no more than 3 K with respect to the storage temperature during period S (see 6.4). The

storage temperature is defined as the maximum temperature of any M-package during a given time period (see

Figure 3)
---------------------- Page: 5 ----------------------
– 4 – IEC 62552-2:2015/AMD1:2020
© IEC 2020
6.1 Objective
Replace the last paragraph with the following new content:

To meet these test requirements, there shall be, for any ambient temperature between and

including the minimum and maximum ambient temperatures defined by the rated climate class,

at least one control setting at which all compartments meet the specified internal

temperatures. The control(s) however, may be adjusted for testing at different ambient

temperatures.
6.2 Preparation of refrigerating appliance
paragraph with the following new content:
Replace the 6

The unloaded refrigerating appliance should be set up and operated until it has reached

equilibrium at, or close to, the temperatures specified in Table 2.

Thermal storage devices shall be placed in the dedicated positions in the respective

compartments, in accordance with the manufacturer's instructions, and shall be independent

of the location of the test packages. Instructions for loose placement of thermal storage devices

in the appliance do not define dedicated positions.

NOTE An instruction without specific indication of location or placement of the thermal storage devices is an

example of loose placement.

If dedicated positions are absent, the thermal storage devices shall be removed from the

compartment.
6.3.1 Unfrozen compartments (except chill compartment and wine storage
compartment)
Replace the 1 paragraph with the following new content:

For determining the storage temperatures of these compartments, air temperature sensors

shall be located in accordance with D.2.2 of IEC 62552-1:2015/AMD1:2020.
6.3.2 Chill compartments
Replace 6.3.2 with the following new content:
6.3.2 Chill compartments
6.3.2.1 General

All test packages and M-packages shall be as specified in Clause C.2 b) of IEC 62552-1:2015.

For determining the storage temperature of any chill compartment, the storage load shall be

in accordance with 6.3.2.2.

The temperatures of the chill compartment T are the instantaneous temperatures of each

cci

M-package in that compartment. The temperatures and conditions specified in Table 2 shall

apply.

All test packages and M-packages shall be positioned or suspended so that their largest

surface is horizontal. They may be positioned directly on the floor of the compartment or

drawer, but shall always be at least 25 mm away from all walls and ceilings and from the other

---------------------- Page: 6 ----------------------
IEC 62552-2:2015/AMD1:2020 – 5 –
© IEC 2020

packages of the test load. The test packages and M-packages shall be positioned as far as

possible in the corners of the compartment and at two vertical levels:
a) bottom level, which is the lowest horizontal surface intended for storage;

b) top level, where the packages have 25 mm clearance from the compartment ceiling.

Supports can be used to position the packages.
Loading of packages shall be in the following order:
1) front left corner of the bottom level;
2) back right corner of the top level;
3) front right corner of the top level;
4) left back corner of the bottom level;
5) front left corner of the top level;
6) back right corner of the bottom level;
7) front right corner of the bottom level;
8) left back corner of the top level;
9) centre of the bottom level;
10) centre of the top level.

Loading shall start using M-packages, up to the amount specified in Table 3. After the last

M-package, normal test packages shall be loaded until the total number of packages is

reached.

If a package cannot be placed in accordance with the required order, its position shall be

skipped, and the number of packages shall be reduced. The number of M-packages shall not

be reduced.

In the case of a compartment with special subdivisions (shelves, etc.) that are part of the

design, if the dimensions are too small to allow the horizontal positioning of the M-packages, it

is permissible to position them vertically.

If the dimensions are too small to accommodate an M-package (for example in door shelves), a

special support shall be used to position the M-package next to the shelf and as close as

possible to the door liner.
6.3.2.2 Chill compartment storage load

The compartment shall be loaded with the number of packages specified in Table 3.

---------------------- Page: 7 ----------------------
– 6 – IEC 62552-2:2015/AMD1:2020
© IEC 2020
Table 3 – Chill compartment storage load
Volume, V, of chill compartment Total number of packages M-packages
(l)
V < 10 2 2
10 ≤ V < 20 3 2
20 ≤ V < 30 4 2
30 ≤ V < 40 5 3
40 ≤ V < 50 6 3
50 ≤ V < 60 7 4
60 ≤ V < 70 8 4
70 ≤ V < 80 9 5
V ≥ 80 10 5
6.3.3.3.1 General
Replace the last paragraph of item c) with the following:

Surfaces intended for storage with ribs, depressions, slight inclinations, etc. are treated as

horizontal surfaces. If necessary, packers may be used to stabilise stacks (see Figure 5).

NOTE Inclinations of less than 15 mm per 100 mm, which are equal to the width or length of a test package, are

considered slight inclinations.
Figure 5 – Package placement illustration for non flat surfaces
---------------------- Page: 8 ----------------------
IEC 62552-2:2015/AMD1:2020 – 7 –
© IEC 2020
Table 4 – Requirements for periods S and E
Replace Table 4 with the following:
Table 4 – Requirements for periods S and E
Are there
With more than one defrost With only one defrost
temperature Without defrost
Item control cycles starting control cycle starting
control control cycles
within a 24 h test within a 24 h test
cycles?
No Each period shall be at least 3 h long
Length of
periods S
Each period shall consist of the same integral number of temperature control
Yes
and E
cycles totalling not less than 3 h.

Location of Any convenient Period S ends just before a defrost and recovery period

period S time begins.
Yes
Period E ends at least 24 h
Period E ends just before the
Period E ends at after period S begins and
first defrost and recovery
No least 24 h after before the beginning of the
period that begins after 24 h
period S begins next defrost and recovery
after the start of period S
period
Period E ends
Location of
with the Period E ends with the Period E ends with the
period E
conclusion of a conclusion of the last conclusion of a temperature
temperature temperature control cycle control cycle that is in
Yes control cycle completed before the first progress at least 24 h after
that is in progress defrost and recovery period period S begins and before
at least 24 h after that begins after 24 h after the the beginning of the next
the beginning of
start of period S defrost and recovery period
period S
Figure 3 – Storage test sequence
Replace Figure 3 and its title with the following:
Figure 3 – Storage test sequence illustration
---------------------- Page: 9 ----------------------
– 8 – IEC 62552-2:2015/AMD1:2020
© IEC 2020
7.2.2 Installation
Replace the sixth paragraph with the following new content:

Before the test load is added, all compartments shall be empty. Their temperatures shall be

determined as specified in Annex D of IEC 62552-1:2015 and IEC 62552-1:2015/AMD1:2020.

7.2.4 Arrangement of shelves
Replace the first paragraph with the following new content:

If adjustable, a shelf shall be positioned at each of three levels so that the centres of

M-packages placed directly on the shelves (or bottom of the baskets etc.) have the smallest

possible vertical distance to the temperature measurement points TMP , TMP and TMP as

1 2 3
specified in Annex D of IEC 62552-1:2015 and IEC 62552-1:2015/AMD1:2020.
Replace the third paragraph with the following new content:

If no appropriate position can be found for 3 levels in refrigerating appliances with little height

[e.g. box evaporators as shown in a) of Figure D.3 of IEC 62552-1:2015/AMD1:2020] only

levels TMP and TMP shall be used for testing.
1 2
8 Freezing capacity test
Replace Clause 8 with the following new content:
8 Freezing capacity test
8.1 Objective

The purpose of this test is to measure the freezing capacity of freezer compartment(s) by

adding warm test packages (the light load) into the compartment. If the freezing capacity is

greater than, or equal to, the specified minimum capacity (see 8.4.3), the compartment(s) may

be rated as a four-star compartment(s).
8.2 Method overview
Apart from space for the light load, ballast packages are loaded into the frozen

compartment(s) as for the storage test (Clause 6). The refrigerating appliance is operated

until temperatures are stable and in compliance with Table 2. Then a load of packages at

+25 °C is added. This is the so-called light load representing a food load to be processed. The

time to freeze this load to −18 °C is measured. When this can be achieved in no more than 24 h

and other maximum temperature-excursion conditions are met, a four-star compartment

rating may be claimed

NOTE Because the frozen compartment loading is largely the same as for the storage test, there can be an

advantage in doing these tests consecutively.
8.3 Set-up procedure
8.3.1 Ambient temperature
The ambient temperature shall be 25 °C (see A.3.2.3 of IEC 62552-1:2015).
---------------------- Page: 10 ----------------------
IEC 62552-2:2015/AMD1:2020 – 9 –
© IEC 2020
8.3.2 Preparation of the refrigerating appliance
8.3.2.1 General
The refrigerating appliance shall be installed in accordance with Annex B of
IEC 62552-1:2015.

If the configuration of the refrigerating appliance can be changed by the user, the

configuration with the greatest volume at the lowest temperatures shall be used for this test.

Refrigerating appliances with anti-condensation heater(s) which are permanently on during

normal use shall be tested with the heater(s) operating.

Anti-condensation heaters which can be manually controlled by the user shall be switched on

and, if adjustable, they shall be set at their maximum heating rate.

Anti-condensation heaters which are automatically controlled shall be allowed to operate

normally.

Thermal storage devices shall be placed in the dedicated positions in the respective

compartments, in accordance with the manufacturer's instructions, and shall be independent

of the location of the test packages. Instructions for loose placement of thermal storage devices

in the appliance do not define dedicated positions.

NOTE Instructions without specific indication of location or placement of the thermal storage devices is an example

of loose placement.

If dedicated positions are absent, the thermal storage devices shall be removed from the

compartment.

The unloaded refrigerating appliance should be set up and operated until it has reached

equilibrium at, or close to, the temperatures specified in Table 2.
8.3.2.2 Measurement of temperature of chill compartment and all compartments
operating above 0 °C

During the test, the chill compartment temperature is not measured, but it shall be loaded with

test packages as for the storage temperature measurement (see 6.3.2). For determining the

storage temperature of the compartments normally operating above 0 °C, measurement

points shall be as per Annex D of IEC 62552-1:2015 and IEC 62552-1:2015/AMD1:2020, but

with M-packages used instead of cylinders.
8.3.3 Loading of refrigerating appliance
8.3.3.1 Frozen compartment(s) – ballast load
8.3.3.1.1 General

Apart from space for the light load in the appropriate −18 °C compartment(s), ballast

packages are brought to the approximate compartment temperatures and loaded into the

frozen compartment(s), as for the storage test (Clause 6).
A load stack can be comprised of one or more load packages.

In the −18 °C compartment(s), ballast load may be removed to accommodate the light load.

Light load positioning shall take into account the instructions regarding the location to be used

for freezing. If no instructions are given, the packages shall be placed such that they are likely

to be frozen as rapidly as possible.
---------------------- Page: 11 ----------------------
– 10 – IEC 62552-2:2015/AMD1:2020
© IEC 2020
Furthermore, the following constraints shall be fulfilled:
a) the minimum number of stacks shall be removed;

b) the height of a light load stack shall be 2 packages, with the following exceptions:

1) if the light load is to be composed of an odd number of packages, then one light load

stack of 1 package is allowed;

2) if the ballast load to be removed only exists out of stacks of 1 package, then it is

allowed to replace these by light load stacks of 1 package;

3) if the ballast load stack to be removed contains 6 or more packages, then it shall be

replaced with a light load stack of half the number of packages in the ballast load

stack (rounded down).
c) the minimum ballast load is 1 M-package;
d) light load packages shall be placed flat;

e) light load positioning shall take into account the instructions regarding the location to be

used for freezing. If no instructions are given, the packages shall be placed such that they

are likely to be frozen as rapidly as possible;

f) light load packages shall be separated by at least 15 mm from ballast load packages. The

use of spacers between adjacent stacks of packages is permitted, but other spacing

methods are not (see 6.3.3.2).
8.3.3.1.2 M-package placement in the ballast load to accommodate the light load

The M-packages in the ballast load shall be placed in the same manner as for the storage test,

apart from in any locations that are disrupted by the need to leave space for the light load. In

that case, the M-packages shall be placed in the nearest equivalent position to that specified

for the storage test and the new positions recorded. If there are stacks of ballast load

packages beside the light load, an M-package shall also replace the top test package in at

least one of those stacks on each side of the light load. If there is ballast load above the light

load, an M-package shall replace a test package in the centre of the layer immediately above

the light load. If there is ballast load below the light load, an M-package may replace a test

package in the centre of the layer immediately below the light load.
8.3.3.2 Refrigerating appliances with separate three-star compartment

If a refrigerating appliance has a separate three-star compartment with its own external

access door or lid, and the instructions recommend that, before freezing, frozen food already in

storage be placed in that compartment while leaving space in the freezer compartment to

receive the load for freezing (i.e. the three-star compartment is to be regarded as an

extension of the freezer compartment), a freezing time claim based upon this method of use

is permissible, provided that:

a) when tested according to this method of use, the claimed freezing time is confirmed and

the temperature requirements for the other compartments (see 8.5 a) to g)), if applicable,

are fulfilled during the freezing capacity test, and

b) the light load used in the freezer compartment is at least equivalent to 3,5 kg/100 l of the

combined volumes of the freezer compartment and three-star compartment.
8.4 Test procedure
8.4.1 Starting conditions

After all relevant control devices have been adjusted as required, the loaded refrigerating

appliance is left to run until stable operating conditions are reached.

After stable operating conditions have been attained, internal temperature(s) shall be in

accordance with Table 2, except that the starting temperature of any compartment(s) with no

lower temperature limit(s) specified in that table shall be no more than 2 K below the target

temperature.
---------------------- Page: 12 ----------------------
IEC 62552-2:2015/AMD1:2020 – 11 –
© IEC 2020

In the case of a refrigerating appliance where the compartment temperatures cannot be

adjusted independently, if such a setting is not possible, the non-complying compartments

below the bottom limit shall be set to be as warm as possible.

The temperature indication succession from left to right in Table 2 also indicates the order of

precedence in the case of several temperature possibilities.

In some circumstances, it might be unnecessary to carry out the stabilisation specified here

before the stabilisation specified in 8.4.2.
8.4.2 Setting of control devices

If the refrigerating appliance is provided with means for a pre-freezing (fast-freezing or

quick-freezing) operation, after stable operating conditions in accordance with 8.4.1 have

been attained, the refrigerating appliance shall be set in operation in the pre-freezing

condition according to the instructions. The procedure specified in 8.4.3 shall then be carried

out.

If there are no special instructions for pre-freezing, the procedure described in 8.4.3 shall be

carried out after the refrigerating appliance has reached stable operating conditions in

accordance with the temperature requirements of 8.4.1.
8.4.3 Freezing of the light load

After the conditions specified in 8.4.2 have been attained, the light load shall be introduced.

For models with defrost control cycles, the light load should be added when stability has

been regained and temperature criteria met after a defrost and recovery period. This test

should not overlap a defrost and recovery period. When stability has been achieved prior to

the introduction of the light load, apart from as in 8.4.2, changes of setting of manually

adjustable controls are no longer permitted.

The light load shall be 3,5 kg/100 l of the total volume of all compartments operating at

−18 °C (three and four stars). The calculated load shall be rounded up to the nearest 0,5 kg,

except that in no case shall it be less than 2,0 kg.

The light load is made from packages which have previously been brought to a temperature of

+25 °C ± 1 K.

M-packages shall be uniformly distributed throughout the light load with at least one as close

as practicable to its geometric centre. The number of M-packages to apply is given in Table 5.

Table 5 – M-Packages in the light load
Light load [kg] Number of M-packages inside the light load
2 2
2,5 or 3 3
3,5 or 4 4
4,5 or 5 5
> 5 6
8.4.4 Intermediate test data to be recorded

The temperatures of the M-packages in the ballast load and in the light load shall be recorded,

together with those of the M-packages in the other compartment(s), if any. This shall be done

until the arithmetic mean of the instantaneous temperatures of all the M-packages in the light

---------------------- Page: 13 ----------------------
– 12 – IEC 62552-2:2015/AMD1:2020
© IEC 2020

load reaches ≤ −18 °C and all other criteria in 8.5 are satisfied. The time necessary for

reaching this condition shall be recorded as the freezing time.

If, during the test, an M-package exhibits a supercooling effect, the test is invalid and shall be

repeated, possibly with a replaced M-package.

Supercooling, also known as undercooling, is the process of lowering the temperature of a

liquid below its freezing point without it becoming a solid. It can be observed during the test as

a rapid increase of the temperature in an M-package. If the increase is more than 3 K, the test

shall be considered invalid.
8.5 Criteria to achieve a four-star compartment rating

A compartment achieves a four-star rating if the arithmetic mean of the instantaneous

temperatures of all the M-packages in the light load reaches ≤ −18 °C in no more than 24 h

and:

a) unless a defrost and recovery period overlaps the test, the maximum temperature of any

M-packages of the ballast load remains ≤ −15 °C and at the end of the test the maximum

temperature of the warmest M-package of the ballast load is ≤ −18 °C;

b) if a defrost and recovery period does overlap the test, the maximum temperature of any

M-packages of the ballast load
...

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