EN 16855-2:2018

SLOVENSKI STANDARD
01-februar-2019
Dostopne hladilnice - Definicije, toplotnoizolacijske lastnosti in preskusne metode
- 2. del: Prilagojene hladilnice
Walk-in cold rooms - Definition, thermal insulation performance and test methods - Part
2: Customized cold rooms
Begehbare Kühlräume - Definitionen, Wärmedämmung und Prüfmethoden - Teil 2:
Maßgefertigte Bauteile für Kühlräume
Chambres froides - Définition, performance d'isolation thermique et méthodes d'essai -
Partie 2 : Chambres froides personnalisées
Ta slovenski standard je istoveten z: EN 16855-2:2018
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.

EN 16855-2
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 97.130.20
English Version
Walk-in cold rooms - Definition, thermal insulation
performance and test methods - Part 2: Customized cold
rooms
Chambres froides - Définition, performance d'isolation Begehbare Kühlräume - Definitionen, Wärmedämmung
thermique et méthodes d'essai - Partie 2 : Chambres und Prüfmethoden - Teil 2: Maßgefertigte Bauteile für
froides personnalisées Kühlräume
This European Standard was approved by CEN on 25 June 2018.

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, 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.
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. EN 16855-2:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols and abbreviations . 13
5 Performance . 13
6 Methods to assess thermal insulation performances of customized walk-in cold
room components . 15
7 Methods to assess thermal insulation performances of customized walk-in cold
rooms and total power consumption . 23
8 Installation of walk-in cold rooms . 24
Annex A (normative) Determination of the declared values of thermal resistance and
thermal conductivity . 26
A.1 General. 26
A.2 Input data. 26
A.3 Declared values . 26
Annex B (normative) Determination of the aged values of thermal resistance and thermal
conductivity . 28
B.1 General. 28
B.2 Sampling and conditioning . 29
B.3 Measurement of the initial value of the thermal conductivity . 29
B.4 Evaluation of the thermal conductivity value with the accelerated ageing . 29
B.5 Fixed increments method . 30
B.6 Declaration of the aged values of thermal resistance and thermal conductivity . 32
Annex C (informative) Walk-in cold rooms documentation and control . 34
C.1 Documentation . 34
C.2 Factory Production Control (FPC) . 35
Annex D (informative) Recommendations on installation . 37
D.1 General. 37
D.2 Preliminary provisions . 37
D.3 Installation, assembly and fixing of panels . 38
D.4 Maintenance and cleaning of the walk-in cold room . 51
Bibliography . 53
European foreword
This document (EN 16855-2:2018) 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 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 June 2019, and conflicting national standards shall be
withdrawn at the latest by June 2019.
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.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Introduction
This document was drafted following the necessity to compare the systems placed on the market on the
base of the minimum thermal insulation requirements and to establish the average level of energy
consumption for a future minimum energy performance standard definition, with reference to the EU
policy on increasing energy efficiency of energy related products (Directive 2009/125/EC) in the frame
of the EU “20-20-20” targets.
It was necessary to identify the reference standards for calculation, measurement of insulation
properties, identify the best practice rules for elimination of thermal bridges, assembly techniques and
provisions to be taken in order to ensure the best level of insulation and power consumption.
1 Scope
This document provides test or calculation methods to assess thermal insulation performances for
customized walk-in cold rooms and components under normal end-use conditions.
The normal end-use conditions of a walk-in cold room are considered to be:
— installation inside an existing building;
— not exposed to external weather conditions;
— internal side of panels subject to temperatures within the indicative range −40 °C ≤ T ≤ 12 °C;
— external side of panels subject to temperatures within the indicative range −8 °C ≤ T ≤ 30 °C;
temperatures below 0 °C, or higher than 20 °C, can be reached if the walk-in cold room is located
inside not air-conditioned premises.
NOTE In case the customized walk-in cold room working at positive storage temperature is used as a food
processing room or a clean room, the standard is applied.
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 12086, Thermal insulating products for building applications - Determination of water vapour
transmission properties
EN 12667:2001, Thermal performance of building materials and products - Determination of thermal
resistance by means of guarded hot plate and heat flow meter methods - Products of high and medium
thermal resistance
EN 12865, Hygrothermal performance of building components and building elements - Determination of
the resistance of external wall systems to driving rain under pulsating air pressure
EN 12939, Thermal performance of building materials and products - Determination of thermal resistance
by means of guarded hot plate and heat flow meter methods - Thick products of high and medium thermal
resistance
EN 13162, Thermal insulation products for buildings - Factory made mineral wool (MW) products -
Specification
EN 13163, Thermal insulation products for buildings - Factory made expanded polystyrene (EPS) products
- Specification
EN 13164, Thermal insulation products for buildings - Factory made extruded polystyrene foam (XPS)
products - Specification
EN 13165, Thermal insulation products for buildings - Factory made rigid polyurethane foam (PU)
products - Specification
EN 13166, Thermal insulation products for buildings - Factory made phenolic foam (PF) products -
Specification
EN 13167, Thermal insulation products for buildings - Factory made cellular glass (CG) products -
Specification
EN ISO 4590, Rigid cellular plastics - Determination of the volume percentage of open cells and of closed
cells (ISO 4590)
EN ISO 6946, Building components and building elements - Thermal resistance and thermal transmittance
- Calculation methods (ISO 6946)
EN ISO 10077-1, Thermal performance of windows, doors and shutters - Calculation of thermal
transmittance - Part 1: General (ISO 10077-1)
EN ISO 10077-2, Thermal performance of windows, doors and shutters - Calculation of thermal
transmittance - Part 2: Numerical method for frames (ISO 10077-2)
EN ISO 10211, Thermal bridges in building construction - Heat flows and surface temperatures - Detailed
calculations (ISO 10211)
EN ISO 10456, Building materials and products - Hygrothermal properties -Tabulated design values and
procedures for determining declared and design thermal values (ISO 10456)
EN ISO 12572, Hygrothermal performance of building materials and products - Determination of water
vapour transmission properties - Cup method (ISO 12572)
EN ISO 14683, Thermal bridges in building construction - Linear thermal transmittance - Simplified
methods and default values (ISO 14683)
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
walk-in cold room
thermally insulated enclosure made of sandwich panels intended for the storage of chilled and/or
frozen perishable items, accessible via at least one door, and which is large enough to let somebody
walk in it
3.1.1
customized walk- in cold room
walk-in cold room installed by assembling the single components, requiring on-site cutting of the
sandwich panels
3.1.2
customized walk-in cold room with floor
walk-in cold room equi
...