SIST EN 16838:2016

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SRJRMLVerkaufskühlmöbel für Speiseeis - Klassifizierung, Anforderungen und PrüfbedingungenVitrines réfrigérées de vente de glace - Classification, exigences et conditions d’essaiRefrigerated display scooping cabinets for gelato - Classification, requirements and test conditions97.130.20Hladilne naprave za trgovineCommercial refrigerating appliancesICS:Ta slovenski standard je istoveten z:EN 16838:2016SIST EN 16838:2016en,fr,de01-oktober-2016SIST EN 16838:2016SLOVENSKI
STANDARD



SIST EN 16838:2016



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16838
July
t r s x ICS
{ yä s u rä t r English Version
Refrigerated display scooping cabinets for gelato æ Classificationá requirements and test conditions Vitrines réfrigérées de vente de glace æ Classificationá exigences et conditions d 5essai
Verkaufskühlmöbel für Speiseeis æ Klassifizierungá Anforderungen und Prüfbedingungen This European Standard was approved by CEN on
t { May
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x z u zã t r s x ESIST EN 16838:2016



EN 16838:2016 (E) 2 Contents Page European foreword . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Symbols and abbreviations . 7 5 Requirements . 8 5.1 Construction . 8 5.1.1 General . 8 5.1.2 Materials . 9 5.1.3 Refrigerating system . 9 5.1.4 Electrical components . 9 5.1.5 Temperature display . 10 5.2 Operating characteristics . 10 5.2.1 Absence of odour and taste. 10 5.2.2 Classification according to temperature . 11 Table 1 — Temperature classes . 11 Figure 1 — Relevant temperature curves of M-Test gelato tubs . 12 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 Table 2 — Test summary . 13 6.2 Tests outside test room . 14 Table 3 — Examples of gelato tubs dimensions . 14 6.3 Tests inside test room . 14 6.3.1 General . 14 6.3.2 Test room — General design, walls, floor and radiant heat . 15 Table 4 — Climate classes . 16 Figure 2 — Climate measuring point for gelato scooping cabinets . 17 Table 5 — Ingredients of the reference test mixture . 17 Figure 3 — Positioning of the measuring probes . 18 Table 6 — Temperature and specific enthalpy of filler test gelato tub . 19 Table 7 — Temperature and increase in specific enthalpy of filler test gelato tubs . 19 Figure 4 — Thermal characteristics of filler test gelato tubs . 20 6.3.3 Preparation of test Gelato scooping cabinet and general test procedures . 20 Figure 5 — Gelato scooping cabinet position . 22 Figure 6 — Position of M-test gelato tubs in the display section . 22 SIST EN 16838:2016



EN 16838:2016 (E) 3 Figure 7 — Position of M-test gelato tubs in the storage section . 23 6.3.4 Temperature test . 24 Figure 8 — Warmest M-test gelato tub temperatures (curve a) Coldest M-test gelato tub temperatures (curve b) . 26 Figure 9 — Arithmetic mean temperature of M- test gelato tubs (curve d) . 27 6.3.5 Water vapour condensation test . 27 Figure 10 — Condensation code . 28 6.3.6 Electrical energy consumption test . 29 6.3.7 Heat extraction rate measurement when condensing unit is remote from Gelato scooping cabinet . 29 Figure 11 — Gelato scooping cabinets intended for connection to compression-type refrigerating systems . 32 Figure 12 — Refrigeration cycle — Constant evaporating pressure — No cycling . 35 Figure 13 — Refrigeration cycle — Cycling including pump down . 36 7 Test report . 36 7.1 General . 36 7.2 Tests outside test room . 36 Table 8 — Linear dimensions, areas and volumes . 37 7.3 Tests inside test room . 37 7.3.1 General test conditions . 37 Table 9 — Conditions for tests inside test room . 37 7.3.2 Cabinet preparation. 37 Table 10 — Gelato scooping Cabinet preparation for tests inside test room . 37 7.3.3 Temperature test . 38 Table 11 — Temperature test for tests inside test room . 38 7.3.4 Water vapour condensation test . 38 Table 12 — Water vapour condensation test . 38 7.3.5 Electrical energy consumption test . 39 Table 13 — Electrical energy consumption test . 39 7.3.6 Heat extraction rate measurement when the condensing unit is remote from the Gelato scooping cabinet. 39 Table 14 — Heat extraction rate measurement when the condensing unit is remote from the Gelato scooping cabinet . 40 8 Marking . 40 8.1 Marking plate . 40 8.2 Information to be supplied by the manufacturer . 41 Annex A (informative)
Test for absence of odour and taste . 43 A.1 Preparation and testing . 43 A.1.1 Ambient temperature . 43 A.1.2 Cleaning . 43 A.1.3 Thermostat setting . 43 A.1.4 Samples . 43 A.1.5 Test period . 43 SIST EN 16838:2016



EN 16838:2016 (E) 4 A.2 Examination of samples . 44 A.2.1 Conditions . 44 A.2.2 Evaluation . 44 Annex B (normative)
Data requirements for performance and energy rating of gelato scooping cabinets . 45 B.1 Scope . 45 B.2 Terms and definitions . 45 Table B.1 — Designation of Gelato scooping cabinet families . 46 B.3 Data Requirements for rating of gelato Scooping Cabinets with incorporated condensing unit . 46 B.3.1 General . 46 B.3.2 Evaluation of DEC . 46 B.3.3 Evaluation of FEC . 47 B.3.4 Evaluation of LEC . 47 B.3.5 Evaluation of AEC . 47 B.3.6 Evaluation of DFEC . 47 B.3.7 Evaluation of PEC. 48 B.3.8 Other Electric Energy Consumption . 48 B.3.9 Alternate Components - Effect on DEC . 48 B.4 Data Requirements for rating of gelato Scooping Cabinets with remote condensing unit . 48 B.4.1 General . 48 Bibliography . 49
SIST EN 16838:2016



EN 16838:2016 (E) 5 European foreword This document (EN 16838:2016) 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 2017, and conflicting national standards shall be withdrawn at the latest by January 2017. 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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16838:2016



EN 16838:2016 (E) 6 1 Scope This European Standard specifies requirements for the construction, characteristics and performance of refrigerated display scooping cabinets for gelato used to sale and display artisan and self made gelato, hereafter called “gelato scooping cabinets”. It specifies test conditions and methods for checking that the requirements have been satisfied, as well as classification of the cabinets, their marking and the list of their characteristics to be declared by the manufacturer. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 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. 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 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 3.3 display section visible part of the gelato scooping cabinet used only to display and to scoop the product 3.4 covers sliding door or night curtain or swivel panes 3.5 gelato Tub container intended to store gelato SIST EN 16838:2016



EN 16838:2016 (E) 7 3.6 net volume volume containing gelato within the top edge of the tub 3.7 top display area of GelatoTub area delimited by the external perimeter of a gelato tub open side 3.8 front display area of GelatoTub area delimited by the external perimeter of a gelato tub front side 3.9 total net volume net volume of the storage section 3.10 total display area TDA sum of the top area and the front display area of each visible gelato tubs 4 Symbols and abbreviations trun running time — time during which compressor is running (or solenoid valve is open), within 24 h, expressed in hours tstop stopping time — time during which compressor is not running (or solenoid valve is closed) within 24 h and excluding defrost time, expressed in hours tdeft defrost time — time during which compressor is running and hot gas solenoid valve is open (or reverse cycle valve is open) qm mass flow rate of liquid refrigerant in kilograms per second
time between two consecutive measuring samples, in hours Nmax number of measuring samples in 24 h ndeft number of defrosts during 24 h DEC direct electrical energy consumption, in kilowatt hours per 24 h period RECRC refrigeration electrical energy consumption, in kilowatt hours per 24 h period, for remote gelato scooping cabinet for compression-type refrigerating system TEC total energy consumption in kilowatt hours per 24 h period TDA total display area, in square meters TEC/TDA Specific Energy Consumption (SEC) for Gelato scooping cabinet expressed in kilowatt hours per 24 h per square meters trr relative or percentage running time: deftrunstoprunrunrrtttttt−=+=24 (1) SIST EN 16838:2016



EN 16838:2016 (E) 8 where 24ttt++=runstopdefth n instant heat extraction rate in kilowatts h8, h4 specific enthalpy in kilojoules per kilogram, where state in Figure 11 corresponds to refrigerant outlet, and state in Figure 12 to refrigerant inlet, of Gelato scooping cabinet 7 refrigerant temperature at evaporator outlet, in degrees Celsius 8 refrigerant temperature at the Gelato scooping cabinet outlet, in degrees Celsius 4 refrigerant temperature at the Gelato scooping cabinet inlet, in degrees Celsius 5 refrigerant temperature at evaporator inlet, in degrees Celsius p8 refrigerant pressure at the Gelato scooping cabinet outlet, in Pascals mrun arithmetic average of evaporator-saturated temperature obtained from pressure p8 by referring to table of saturation properties for refrigerant in use — during trun, in degrees Celsius min arithmetic average of evaporator-saturated temperature obtained from pressure p8 by referring to table of saturation properties for refrigerant in use — during the last 10 % of all running periods, in degrees Celsius Tmrun
= mrun + 273,15 in Kelvin 5 Requirements 5.1 Construction 5.1.1 General 5.1.1.1 Strength and rigidity The Gelato scooping cabinet 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. SIST EN 16838:2016



EN 16838:2016 (E) 9 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 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. 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 is in operation or at rest. For Gelato scooping cabinets 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 its 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. 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. SIST EN 16838:2016



EN 16838:2016 (E) 10 5.1.5 Temperature display 5.1.5.1 General The Gelato scooping cabinets shall incorporate a temperature display instrument showing the air temperature in the refrigerated display scooping cabinets 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. 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
« t w °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 t90 of the sensor shall be equal to or less than 20 min. NOTE The t90 time is the 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). 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 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
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