SIST EN 16838:2019
(Main)Refrigerated display scooping cabinets and pozzetto for gelato - Classification, requirements, performance and energy consumption testing
Refrigerated display scooping cabinets and pozzetto for gelato - Classification, requirements, performance and energy consumption testing
This document specifies classification, requirements for the construction, performance and energy consumption testing of gelato scooping cabinets and pozzetto used to sale and/or display artisan and self made gelato. It specifies test conditions and methods for checking that the requirements have been satisfied, their marking and the list of their characteristics to be declared by the manufacturer.
Verkaufskühlmöbel und Pozzetti für Speiseeis - Klassifizierung, Anforderungen, Leistung und Energieaufnahmeprüfung
Dieses Dokument legt die Klassifizierung, Anforderungen an die Konstruktion sowie Leistungs und Energie¬aufnahmeprüfung von Verkaufskühlmöbeln für Speiseeis und Pozzetti fest, die für den Verkauf und/oder die Präsentation von handwerklich hergestelltem und selbstgefertigtem Speiseeis verwendet werden. Es wer¬den Prüfbedingungen und Verfahren zur Überprüfung der Erfüllung der Anforderungen festgelegt; darüber hinaus werden deren Markierung sowie eine Auflistung der durch den Hersteller anzugebenden Eigen¬schaften aufgeführt.
Vitrines réfrigérées de vente de glace et pozzetto - Classification, exigences, performance et essai de consommation énergétique
La présent document spécifie la classification, les exigences de construction, les performances et les essais de consommation énergétique des vitrines réfrigérées de vente de glace et pozzetto utilisés pour la vente et/ou l’exposition de glace artisanale et faite main. Elle spécifie les conditions et les méthodes d’essai pour vérifier que ces exigences ont été respectées, leur marquage et la liste des caractéristiques devant être déclarées par le fabricant.
Hladilne vitrine in skrinje za sladoled - Razvrščanje, zahteve, zmogljivost in preskus porabe energije
Ta dokument določa razvrščanje, zahteve, zmogljivost in preskus porabe energije hladilnih vitrin in skrinj za sladoled, ki se uporabljajo za prodajo in/ali predstavitev butičnega in domačega sladoleda. Določa preskusne pogoje in metode, na podlagi katerih se preverja skladnost s temi zahtevami, njihovo označevanje in seznam njihovih lastnosti, ki jih mora navesti proizvajalec.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 16838:2019
01-september-2019
Nadomešča:
SIST EN 16838:2016
Hladilne vitrine in skrinje za sladoled - Razvrščanje, zahteve, zmogljivost in
preskus porabe energije
Refrigerated display scooping cabinets and pozzetto for gelato - Classification,
requirements, performance and energy consumption testing
Verkaufskühlmöbel und Pozzetti für Speiseeis - Klassifizierung, Anforderungen, Leistung
und Energieaufnahmeprüfung
Vitrines réfrigérées de vente de glace et pozzetto - Classification, exigences,
performance et essai de consommation énergétique
Ta slovenski standard je istoveten z: EN 16838:2019
ICS:
97.130.20 Hladilne naprave za trgovine Commercial refrigerating
appliances
SIST EN 16838:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 16838:2019
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SIST EN 16838:2019
EN 16838
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2019
EUROPÄISCHE NORM
ICS 97.130.20 Supersedes EN 16838:2016
English Version
Refrigerated display scooping cabinets and pozzetto for
gelato - Classification, requirements, performance and
energy consumption testing
Vitrines réfrigérées de vente de glace et pozzetto - Verkaufskühlmöbel und Pozzetti für Speiseeis -
Classification, exigences, performance et essai de Klassifizierung, Anforderungen, Leistung und
consommation énergétique Energieaufnahmeprüfung
This European Standard was approved by CEN on 14 March 2019.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16838:2019 E
worldwide for CEN national Members.
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SIST EN 16838:2019
EN 16838:2019 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 6
5 Requirements . 8
5.1 Construction . 8
5.1.1 General . 8
5.1.2 Materials . 8
5.1.3 Refrigerating system . 9
5.1.4 Electrical components . 9
5.1.5 Temperature display . 9
5.2 Operating characteristics . 10
5.2.1 Absence of odour and taste. 10
5.2.2 Classification according to temperature . 10
5.2.3 Defrosting . 12
5.2.4 Water vapour condensation . 13
5.2.5 Energy consumption . 13
5.2.6 Specific energy consumption . 13
6 Test condition . 13
6.1 General . 13
6.2 Tests outside test room . 13
6.3 Tests inside test room . 15
6.3.1 General . 15
6.3.2 Test room — General design, walls, floor and radiant heat . 15
6.3.3 Preparation and general test procedures for gelato scooping cabinet and pozzetto . 24
6.3.4 Temperature test . 31
6.3.5 Water vapour condensation test . 34
6.3.6 Electrical energy consumption test . 36
6.3.7 Heat extraction rate measurement when condensing unit is remote from gelato
scooping cabinet and pozzetto . 36
7 Test report . 43
7.1 General . 43
7.2 Tests outside test room . 43
7.3 Tests inside test room . 43
7.3.1 General test conditions . 43
7.3.2 Gelato scooping cabinet and pozzetto preparation . 44
7.3.3 Temperature test . 45
7.3.4 Water vapour condensation test . 46
7.3.5 Electrical energy consumption test . 46
7.3.6 Heat extraction rate measurement when the condensing unit is remote from the
gelato scooping cabinet and pozzetto . 46
8 Marking . 48
8.1 Marking plate . 48
2
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EN 16838:2019 (E)
8.2 Information to be supplied by the manufacturer . 48
Annex A (informative) Test for absence of odour and taste . 50
A.1 Preparation and testing . 50
A.1.1 Ambient temperature . 50
A.1.2 Cleaning . 50
A.1.3 Thermostat setting . 50
A.1.4 Samples . 50
A.1.5 Test period . 50
A.2 Examination of samples . 51
A.2.1 Conditions . 51
A.2.2 Evaluation . 51
Annex B (normative) Data requirements for performance and energy rating of gelato
scooping cabinets and pozzetto . 52
B.1 Scope . 52
B.2 Terms and definitions . 52
B.3 Data requirements for rating of gelato scooping cabinets and pozzetto with
incorporated condensing unit. 53
B.3.1 General . 53
B.3.2 Evaluation of DEC . 54
B.3.3 Evaluation of FEC . 54
B.3.4 Evaluation of LEC . 54
B.3.5 Evaluation of AEC . 55
B.3.6 Evaluation of DFEC . 55
B.3.7 Evaluation of PEC . 55
B.3.8 Other electric energy consumption . 55
B.3.9 Alternate components - Effect on DEC . 55
B.4 Data requirements for rating of gelato scooping cabinets and pozzetto with remote
condensing unit . 55
Bibliography . 57
3
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SIST EN 16838:2019
EN 16838:2019 (E)
European foreword
This document (EN 16838:2019) has been prepared by Technical Committee CEN/TC 44 “Commercial
and Professional Refrigerating Appliances and Systems, Performance and Energy Consumption”, the
secretariat of which is held by UNI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2020, and conflicting national standards shall
be withdrawn at the latest by January 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 16838:2016.
In comparison with the previous edition, the following technical modifications have been made:
— addition of pozzetto in the whole standard;
— title modification in order to get it consistent with the content of the standard;
— update terminology;
— update of existing figures and addition of new figures;
— editorial improvement.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
4
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SIST EN 16838:2019
EN 16838:2019 (E)
1 Scope
This document specifies classification, requirements for the construction, performance and energy
consumption testing of gelato scooping cabinets and pozzetto used to sale and/or display artisan and self
made gelato. It specifies test conditions and methods for checking that the requirements have been
satisfied, their marking and the list of their characteristics to be declared by the manufacturer.
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.
EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements (IEC
60335-1)
EN 60335-2-89, Household and similar electrical appliances — Safety — Part 2-89: Particular
requirements for commercial refrigerating appliances with an incorporated or remote refrigerant
condensing unit or compressor (IEC 60335-2-89)
ISO 5149-2, Refrigerating systems and heat pumps — Safety and environmental requirements — Part 2:
Design, construction, testing, marking and documentation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
gelato scooping cabinets
cabinet cooled by a refrigerating system which enables to store, to display and to scoop artisan and self
made gelato contained in tubs, within prescribed temperature limits
Note 1 to entry: Artisan and self made gelato are hereafter called “gelato”.
3.2
pozzetto
cabinet cooled by a refrigerating system which enables to store and to scoop gelato contained in tubs,
within prescribed temperature limits
3.3
storage section
non-visible part of the gelato scooping cabinet used only to store the product, separated from the display
volume and with a different access
3.4
display section
visible part of the gelato scooping cabinet used to display and to scoop the product
5
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SIST EN 16838:2019
EN 16838:2019 (E)
3.5
pozzetto section
part of the pozzetto used to scoop the product
3.6
covers
sliding door or night curtain or swivel panes
3.7
lid
removable cover for pozzetto section
3.8
gelato tub
container intended to store gelato
3.9
net volume
volume containing gelato within the top edge of the tub
3.10
top display area of gelato tub
area delimited by the external perimeter of a gelato tub open side
3.11
front display area of gelato tub
area delimited by the external perimeter of a gelato tub front side
3.12
lateral display area of gelato tub
area delimited by the external perimeter of a gelato tub lateral side
3.13
total net storage volume
Vs
sum of net volume of each tubs contained in the storage section
3.14
total net volume of pozzetto section
Vp
sum of net volume of each tubs contained in pozzetto section
3.15
total display area
TDA
sum of the top, front and lateral display areas of each visible gelato tubs
4 Symbols and abbreviations
t running time — time during which compressor is running (or solenoid valve is open), within
run
24 h, expressed in hours
t stopping time — time during which compressor is not running (or solenoid valve is closed)
stop
within 24 h and excluding defrost time, expressed in hours
6
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SIST EN 16838:2019
EN 16838:2019 (E)
t defrost time — time during which compressor is running and hot gas solenoid valve is open
deft
(or reverse cycle valve is open)
q mass flow rate of liquid refrigerant in kilograms per second
m
Δt time between two consecutive measuring samples, in hours
N number of measuring samples in 24 h
max
n number of defrosts during 24 h
deft
DEC direct electrical energy consumption, in kilowatt hours per 24 h period
REC refrigeration electrical energy consumption, in kilowatt hours per 24 h period, for remote
RC
gelato scooping cabinet and remote pozzetto for compression-type refrigerating system
TEC total energy consumption in kilowatt hours per 24 h period
TDA total display area, in square meters
Vp total net volume of pozzetto section, in litres
Vs total net volume of storage section, in litres
TEC/TDA specific energy gonsumption (SEC-D) for gelato scooping cabinet expressed in kilowatt
hours per 24 h per square meters
TEC/Vp specific energy consumption (SEC-Vp) for pozzetto expressed in kilowatt hours per 24 h per
litres
t relative or percentage running time:
rr
tt
run run
t
(1)
rr
tt+ 24− t
run stop deft
Where
tt++ t =24 h
run stop deft
Φ instant heat extraction rate in kilowatts
n
h , h specific enthalpy in kilojoules per kilogram, where state in Figure 12 corresponds to
8 4
refrigerant outlet, and state in Figure 13 to refrigerant inlet, of gelato scooping cabinet and
pozzetto
θ refrigerant temperature at evaporator outlet, in degrees Celsius
7
θ refrigerant temperature at the gelato scooping cabinet and pozzetto outlet, in degrees
8
Celsius
θ refrigerant temperature at the gelato scooping cabinet and pozzetto inlet, in degrees
4
Celsius
θ refrigerant temperature at evaporator inlet, in degrees Celsius
5
p refrigerant pressure at the gelato scooping cabinet and pozzetto outlet, in Pascals
8
7
==
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SIST EN 16838:2019
EN 16838:2019 (E)
θ arithmetic average of evaporator-saturated temperature obtained from pressure p by
mrun 8
referring to table of saturation properties for refrigerant in use — during t , in degrees
run
Celsius
θ arithmetic average of evaporator-saturated temperature obtained from pressure p by
min 8
referring to table of saturation properties for refrigerant in use — during the last 10 % of
all running periods, in degrees Celsius
T = θ + 273,15 in Kelvin
mrun mrun
5 Requirements
5.1 Construction
5.1.1 General
5.1.1.1 Strength and rigidity
The Gelato scooping cabinet or pozzetto 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:
1) interior fittings, including shelves, baskets, rails, etc. and their supports, shall be sufficiently strong
for the duty required;
2) where sliding shelves, baskets, trays or drawers are fitted they shall retain their shape and ease of
movement when fully loaded;
3) 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.
5.1.1.2 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.
5.1.1.3 Condensate drainage
Where drains, drip trays or evaporation receptacles are fitted, they shall have ample capacity and shall
be easily accessible and cleanable.
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 gelato scooping cabinet or pozzetto is intended.
5.1.1.4 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.
5.1.2 Materials
The materials shall be durable and shall not favour the development of mould or emit odours.
8
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SIST EN 16838:2019
EN 16838:2019 (E)
Under normal conditions of use, materials in contact with foodstuffs shall be resistant to moisture and
shall neither be toxic nor contaminate them.
5.1.3 Refrigerating system
5.1.3.1 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 gelato scooping
cabinet and pozzetto are in operation or at rest.
For gelato scooping cabinets and pozzetto with integral condensing unit or 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.
5.1.3.2 Condensation
There shall be suitable means to prevent water condensed on cold surfaces of the gelato scooping cabinet
and pozzetto and their parts from harmfully affecting the operation of the refrigerating system or its
controls.
5.1.3.3 System protection
For gelato scooping cabinets fitted with covers, the refrigerating system shall suffer no damage if any
cover in the gelato scooping cabinet is left open while the gelato scooping cabinet is operating in an
ambient temperature corresponding to the climate class (see Table 4) for which the gelato scooping
cabinet is intended.
When the cover 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.
For pozzetto fitted with lids, the refrigerating system shall suffer no damage if any lid in the pozzetto is
left open while the pozzetto is operating in an ambient temperature corresponding to the climate class
(see Table 4) for which the pozzetto is intended.
When the 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.
5.1.3.4 Refrigerant
When deciding on the refrigerant for the system, attention shall be given to the possible hazards
associated with the use of certain refrigerants, due to their toxicity, flammability etc. Guidance on this
point is available in ISO 5149-2.
5.1.4 Electrical components
Electrical components shall be in accordance with EN 60335-2-89 and EN 60335-1.
5.1.5 Temperature display
5.1.5.1 General
The gelato scooping cabinets and pozzetto shall incorporate a temperature display instrument showing
the air temperature in the refrigerated equipment to provide an indication of the operation and
functioning of refrigerating equipment and information on its operating state.
NOTE As a rule, measured air temperature is not identical with gelato temperature in gelato scooping cabinets
and pozzetto.
9
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EN 16838:2019 (E)
5.1.5.2 Temperature-measuring instrument
Suitable temperature-measuring instruments shall be used, i.e. those that fulfil the following
requirements:
— the unit symbol (°C) shall be inscribed or displayed on the temperature-measuring instrument;
— the range of measurement shall be at least from −25 °C to +15 °C;
— the scale division or smallest numerical increment shall be less than or equal to 1 °C;
— the maximum errors shall be 2 K over the total measuring range;
— the time constant t of the sensor shall be equal to or less than 20 min.
90
NOTE The t time is the time in which 90 % of a sudden temperature change of 20 °C is indicated, the
90
measurement medium being moderately agitated air (velocity 1 m/s).
5.1.5.3 Temperature sensor location
The temperature sensor location shall be readily accessible to enable on site testing for the correct
indication of temperature and replacement of the temperature measuring instrument on site in service.
NOTE 1 The temperature sensor of a thermometer is considered to be “readily accessible” if it is reachable
directly for examination. It ought to be necessary to remove access panel(s) to carry out replacement.
NOTE 2 For gelato scooping cabinets and pozzetto with natural convection cooling, the positioning of the
temperature sensor in a guide tube is also considered to be “readily accessible” if the sensor is introduced into and
removed from the guide tube without a tool.
Wherever possible, the mounting method shall not supply heat to, or withdraw heat from the
temperature sensor.
The temperature sensor shall be protected against heat radiation from the external ambient.
The temperature sensor location is defined as part of the temperature test of the gelato scooping cabinet
and pozzetto. During the temperature test air temperatures at the declared sensor location shall be
measured and these values noted in the test report.
NOTE 3 It is the responsibility of the supplier and end user to ensure that the temperature measurements comply
with national regulation on temperature control of gelato.
5.2 Operating characteristics
5.2.1 Absence of odour and taste
The absence of odour and taste is not compulsory. An optional test method is given in Annex A.
5.2.2 Classification according to temperature
The performance of gelato scooping cabinet and pozzetto shall comply with one of the clas
...
SLOVENSKI STANDARD
oSIST prEN 16838:2019
01-januar-2019
+ODGLOQHYLWULQHLQVNULQMH]DVODGROHG5D]YUãþDQMH]DKWHYH]PRJOMLYRVWLQ
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Refrigerated display scooping cabinets and pozzetto for gelato - Classification,
requirements, performance and energy consumption testing
Verkaufskühlmöbel und Pozzetti für Speiseeis - Klassifizierung, Anforderungen, Leistung
und Energieaufnahmeprüfung
Vitrines réfrigérées de vente de glace et pozzetto - Classification, exigences,
performance et essai de consommation énergétique
Ta slovenski standard je istoveten z: prEN 16838
ICS:
97.130.20 Hladilne naprave za trgovine Commercial refrigerating
appliances
oSIST prEN 16838:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16838:2019
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oSIST prEN 16838:2019
DRAFT
EUROPEAN STANDARD
prEN 16838
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2018
ICS 97.130.20 Will supersede EN 16838:2016
English Version
Refrigerated display scooping cabinets and pozzetto for
gelato - Classification, requirements, performance and
energy consumption testing
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 44.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16838:2018 E
worldwide for CEN national Members.
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oSIST prEN 16838:2019
prEN 16838:2018 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 6
5 Requirements . 8
5.1 Construction . 8
5.1.1 General . 8
5.1.2 Materials . 8
5.1.3 Refrigerating system . 9
5.1.4 Electrical components . 9
5.1.5 Temperature display . 9
5.2 Operating characteristics . 10
5.2.1 Absence of odour and taste. 10
5.2.2 Classification according to temperature . 10
5.2.3 Defrosting . 13
5.2.4 Water vapour condensation . 13
5.2.5 Energy consumption . 13
5.2.6 Specific energy consumption . 13
6 Test condition . 13
6.1 General . 13
6.2 Tests outside test room . 14
6.3 Tests inside test room . 15
6.3.1 General . 15
6.3.2 Test room — General design, walls, floor and radiant heat . 15
6.3.3 Preparation and general test procedures for gelato scooping cabinet and pozzetto . 23
6.3.4 Temperature test . 30
6.3.5 Water vapour condensation test . 33
6.3.6 Electrical energy consumption test . 35
6.3.7 Heat extraction rate measurement when condensing unit is remote from gelato
scooping cabinet and pozzetto . 35
7 Test report . 42
7.1 General . 42
7.2 Tests outside test room . 42
7.3 Tests inside test room . 42
7.3.1 General test conditions . 42
7.3.2 Gelato scooping cabinet and pozzetto preparation . 42
7.3.3 Temperature test . 43
7.3.4 Water vapour condensation test . 44
7.3.5 Electrical energy consumption test . 45
7.3.6 Heat extraction rate measurement when the condensing unit is remote from the
gelato scooping cabinet and pozzetto . 45
8 Marking . 47
8.1 Marking plate . 47
2
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oSIST prEN 16838:2019
prEN 16838:2018 (E)
8.2 Information to be supplied by the manufacturer . 47
Annex A (informative) Test for absence of odour and taste . 49
A.1 Preparation and testing . 49
A.1.1 Ambient temperature . 49
A.1.2 Cleaning . 49
A.1.3 Thermostat setting . 49
A.1.4 Samples . 49
A.1.5 Test period . 49
A.2 Examination of samples . 50
A.2.1 Conditions . 50
A.2.2 Evaluation . 50
Annex B (normative) Data requirements for performance and energy rating of gelato
scooping cabinets and pozzetto . 51
B.1 Scope . 51
B.2 Terms and definitions . 51
B.3 Data requirements for rating of gelato scooping cabinets and pozzetto with
incorporated condensing unit. 52
B.3.1 General . 52
B.3.2 Evaluation of DEC . 52
B.3.3 Evaluation of FEC . 53
B.3.4 Evaluation of LEC . 53
B.3.5 Evaluation of AEC . 53
B.3.6 Evaluation of DFEC . 53
B.3.7 Evaluation of PEC . 54
B.3.8 Other electric energy consumption . 54
B.3.9 Alternate components - Effect on DEC . 54
B.4 Data requirements for rating of gelato scooping cabinets and pozzetto with remote
condensing unit . 54
Bibliography . 55
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European foreword
This document (prEN 16838:2018) has been prepared by Technical Committee CEN/TC 44 “Commercial
and Professional Refrigerating Appliances and Systems, Performance and Energy Consumption”, the
secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 16838:2016.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
In comparison with the previous edition, the following technical modifications have been made:
— addition of pozzetto in the whole standard;
— title modification in order to get it consistent with the content of the standard;
— update terminology;
— update existing figures and addition of new Figures;
— editorial improvement.
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1 Scope
This document specifies classification, requirements for the construction, performance and energy
consumption testing of gelato scooping cabinets and pozzetto used to sale and/or display artisan and self
made gelato. It specifies test conditions and methods for checking that the requirements have been
satisfied, their marking and the list of their characteristics to be declared by the manufacturer.
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.
EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements (IEC
60335-1)
EN 60335-2-89, Household and similar electrical appliances — Safety — Part 2-89: Particular
requirements for commercial refrigerating appliances with an incorporated or remote refrigerant
condensing unit or compressor (IEC 60335-2-89)
ISO 5149-2, Refrigerating systems and heat pumps — Safety and environmental requirements — Part 2:
Design, construction, testing, marking and documentation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
gelato scooping cabinets
cabinet cooled by a refrigerating system which enables to store, to display and to scoop artisan and self
made gelato contained in tubs, within prescribed temperature limits
Note 1 to entry: Artisan and self made gelato are hereafter called “gelato”.
3.2
pozzetto
cabinet cooled by a refrigerating system which enables to store and to scoop gelato contained in tubs,
within prescribed temperature limits
3.3
storage section
non-visible part of the gelato scooping cabinet used only to store the product, separated from the display
volume and with a different access
3.4
display section
visible part of the gelato scooping cabinet used to display and to scoop the product
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3.5
pozzetto section
part of the pozzetto used to scoop the product
3.6
covers
sliding door or night curtain or swivel panes
3.7
lid
removable cover for pozzetto section
3.8
gelato tub
container intended to store gelato
3.9
net volume
volume containing gelato within the top edge of the tub
3.10
top display area of gelato tub
area delimited by the external perimeter of a gelato tub open side
3.11
front display area of gelato tub
area delimited by the external perimeter of a gelato tub front side
3.12
lateral display area of gelato tub
area delimited by the external perimeter of a gelato tub lateral side
3.13
total net storage volume
Vs
sum of net volume of each tubs contained in the storage section
3.14
total net volume of pozzetto section
Vp
sum of net volume of each tubs contained in pozzetto section
3.15
total display area
TDA
sum of the top, front and lateral display areas of each visible gelato tubs
4 Symbols and abbreviations
t running time — time during which compressor is running (or solenoid valve is open), within
run
24 h, expressed in hours
t stopping time — time during which compressor is not running (or solenoid valve is closed)
stop
within 24 h and excluding defrost time, expressed in hours
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t defrost time — time during which compressor is running and hot gas solenoid valve is open
deft
(or reverse cycle valve is open)
q mass flow rate of liquid refrigerant in kilograms per second
m
Δt time between two consecutive measuring samples, in hours
N number of measuring samples in 24 h
max
n number of defrosts during 24 h
deft
DEC direct electrical energy consumption, in kilowatt hours per 24 h period
REC refrigeration electrical energy consumption, in kilowatt hours per 24 h period, for remote
RC
gelato scooping cabinet and remote pozzetto for compression-type refrigerating system
TEC total energy consumption in kilowatt hours per 24 h period
TDA total display area, in square meters
Vp total net volume of pozzetto section, in litres
Vs total net volume of storage section, in litres
TEC/TDA specific energy gonsumption (SEC-D) for gelato scooping cabinet expressed in kilowatt
hours per 24 h per square meters
TEC/Vp specific energy consumption (SEC-Vp) for pozzetto expressed in kilowatt hours per 24 h per
litres
t relative or percentage running time:
rr
tt
run run
t (1)
rr
t +−t 24 t
run stop deft
Where
t +t +=t24 h
run stop deft
Φ instant heat extraction rate in kilowatts
n
h , h specific enthalpy in kilojoules per kilogram, where state in Figure 12 corresponds to
8 4
refrigerant outlet, and state in Figure 13 to refrigerant inlet, of gelato scooping cabinet and
pozzetto
θ refrigerant temperature at evaporator outlet, in degrees Celsius
7
θ refrigerant temperature at the gelato scooping cabinet and pozzetto outlet, in degrees
8
Celsius
θ refrigerant temperature at the gelato scooping cabinet and pozzetto inlet, in degrees
4
Celsius
θ refrigerant temperature at evaporator inlet, in degrees Celsius
5
p refrigerant pressure at the gelato scooping cabinet and pozzetto outlet, in Pascals
8
7
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θ arithmetic average of evaporator-saturated temperature obtained from pressure p by
mrun 8
referring to table of saturation properties for refrigerant in use — during t , in degrees
run
Celsius
θ arithmetic average of evaporator-saturated temperature obtained from pressure p by
min 8
referring to table of saturation properties for refrigerant in use — during the last 10 % of
all running periods, in degrees Celsius
T = θ + 273,15 in Kelvin
mrun mrun
5 Requirements
5.1 Construction
5.1.1 General
5.1.1.1 Strength and rigidity
The Gelato scooping cabinet or pozzetto 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:
1) interior fittings, including shelves, baskets, rails, etc. and their supports, shall be sufficiently strong
for the duty required;
2) where sliding shelves, baskets, trays or drawers are fitted they shall retain their shape and ease of
movement when fully loaded;
3) 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.
5.1.1.2 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.
5.1.1.3 Condensate drainage
Where drains, drip trays or evaporation receptacles are fitted, they shall have ample capacity and shall
be easily accessible and cleanable.
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 gelato scooping cabinet or pozzetto is intended.
5.1.1.4 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.
5.1.2 Materials
The materials shall be durable and shall not favour the development of mould or emit odours.
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Under normal conditions of use, materials in contact with foodstuffs shall be resistant to moisture and
shall neither be toxic nor contaminate them.
5.1.3 Refrigerating system
5.1.3.1 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 gelato scooping
cabinet and pozzetto are in operation or at rest.
For gelato scooping cabinets and pozzetto with integral condensing unit or 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.
5.1.3.2 Condensation
There shall be suitable means to prevent water condensed on cold surfaces of the gelato scooping cabinet
and pozzetto and their parts from harmfully affecting the operation of the refrigerating system or its
controls.
5.1.3.3 System protection
For gelato scooping cabinets fitted with covers, the refrigerating system shall suffer no damage if any
cover in the gelato scooping cabinet is left open while the gelato scooping cabinet is operating in an
ambient temperature corresponding to the climate class (see Table 4) for which the gelato scooping
cabinet is intended.
When the cover 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.
For pozzetto fitted with lids, the refrigerating system shall suffer no damage if any lid in the pozzetto is
left open while the pozzetto is operating in an ambient temperature corresponding to the climate class
(see Table 4) for which the pozzetto is intended.
When the 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.
5.1.3.4 Refrigerant
When deciding on the refrigerant for the system, attention shall be given to the possible hazards
associated with the use of certain refrigerants, due to their toxicity, flammability etc. Guidance on this
point is available in ISO 5149-2.
5.1.4 Electrical components
Electrical components shall be in accordance with EN 60335-2-89 and EN 60335-1.
5.1.5 Temperature display
5.1.5.1 General
The gelato scooping cabinets and pozzetto shall incorporate a temperature display instrument showing
the air temperature in the refrigerated equipment to provide an indication of the operation and
functioning of refrigerating equipment and information on its operating state.
NOTE As a rule, measured air temperature is not identical with gelato temperature in gelato scooping cabinets
and pozzetto.
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5.1.5.2 Temperature-measuring instrument
Suitable temperature-measuring instruments shall be used, i.e. those that fulfil the following
requirements:
— the unit symbol (°C) shall be inscribed or displayed on the temperature-measuring instrument;
— the range of measurement shall be at least from −25 °C to +15 °C;
— the scale division or smallest numerical increment shall be less than or equal to 1 °C;
— the maximum errors shall be 2 K over the total measuring range;
— the time constant t of the sensor shall be equal to or less than 20 min.
90
NOTE The t time is the time in which 90 % of a sudden temperature change of 20 °C is indicated, the
90
measurement medium being moderately agitated air (velocity 1 m/s).
5.1.5.3 Temperature sensor location
The temperature sensor location shall be readily accessible to enable on site testing for the correct
indication of temperature and replacement of the temperature measuring instrument on site in service.
NOTE 1 The temperature sensor of a thermometer is considered to be “readily accessible” if it is reachable
directly for examination. It ought to be necessary to remove access panel(s) to carry out replacement.
NOTE 2 For gelato scooping cabinets and pozzetto with natural convection cooling, the positioning of the
temperature sensor in a guide tube is also considered to be “readily accessible” if the sensor is introduced into and
removed from the guide tube without a tool.
Wherever possible, the mounting method shall not supply heat to, or withdraw heat from the
temperature sensor.
The temperature sensor shall be protected against heat radiation from the external ambient.
The temperature sensor location is defined as part of the temperature test of the gelato scooping cabinet
and pozzetto. During the temperature test air temperatures at the declared sensor location shall be
measured and these values noted in the test report.
NOTE 3 It is the responsibility of the supplier and end user to ensure that the temperature measurements
complies with national regulation on temperature control of gelato.
5.2 Operating characteristics
5.2.1 Absence of odour and taste
The absence of odour and taste is not compulsory. An optional test method is given in Annex A.
5.2.2 Classification according to temperature
The performance of gelato scooping cabinet and pozzetto 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 6.3.3.
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Table 1 — Temperature classes
Class Highest temperature, Lowest temperature, θ , of Highest minimum
b
θ , of warmest M-test temperature, θ , of all
ah coldest M-test gelato tubs al
gelato tubs colder b test tubs colder than
warmer than or equal to
a b a
than or equal to or equal to
°C
G1 −10 −14
G2 −10 −16
G3 −10 −18
L1 −15 −18
L2 −12 −18
L3 −12 −15
S Special classification
a, b
See Figure 1
...
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