SIST EN 16855-1:2017

SLOVENSKI STANDARD
SIST EN 16855-1:2017
01-marec-2017
Dostopne hladilnice - Definicije, toplotnoizolacijske lastnosti in preskusne metode
- 1. del: Montažne hladilnice
Walk-in cold rooms - Definition, thermal insulation performance and test methods - Part
1: Prefabricated cold room kits
Begehbare Kühlräume - Begriffe, Wärmedämmleistung und Prüfverfahren - Teil 1:
Fertigbauteile für Kühlräume
Chambres froides - Définition, performances d’isolation thermique et méthodes d’essai -
Partie 1 : Kits de chambres froides préfabriquées
Ta slovenski standard je istoveten z: EN 16855-1:2017
ICS:
97.130.20 Hladilne naprave za trgovine Commercial refrigerating
appliances
SIST EN 16855-1:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 16855-1:2017

---------------------- Page: 2 ----------------------

SIST EN 16855-1:2017


EN 16855-1
EUROPEAN STANDARD

NORME EUROPÉENNE

January 2017
EUROPÄISCHE NORM
ICS 97.130.20
English Version

Walk-in cold rooms - Definition, thermal insulation
performance and test methods - Part 1: Prefabricated cold
room kits
Chambres froides - Définition, performances Begehbare Kühlräume - Begriffe, Wärmedämmleistung
d'isolation thermique et méthodes d'essai - Partie 1 : und Prüfverfahren - Teil 1: Fertigbauteile für
Kits de chambres froides préfabriquées Kühlräume
This European Standard was approved by CEN on 26 September 2016.

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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16855-1:2017 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 12
5 Performances . 12
5.1 General . 12
5.2 Thermal insulation performances . 13
5.3 Other performances . 13
5.3.1 Air permeability . 13
5.3.2 Water vapour permeability . 13
6 Methods to assess thermal insulation performances of prefabricated walk-in cold
room components . 13
6.1 General . 13
6.2 Thermal conductivity of the insulating core of wall, ceiling and floor panels . 14
6.3 Thermal transmittance of wall and ceiling panels . 15
6.4 Thermal transmittance of floor panels . 15
6.4.1 General . 15
6.4.2 Test method . 16
6.4.3 Calculation method . 16
6.5 Thermal conductivity of doors . 16
6.6 Thermal conductivity of windows . 17
6.7 Thermal transmittance of corners . 17
6.8 Influence of supporting profiles . 17
6.9 Thermal bridges of the cold room . 17
6.9.1 General . 17
6.9.2 Thermal bridges in doors . 17
6.9.3 Thermal bridges in panel to panel joint . 17
6.9.4 Thermal bridges in panel to floor joint for walk-in cold rooms without insulated
floor . 18
6.9.5 Thermal bridges at corner joints . 18
6.9.6 Thermal bridges of pass through holes . 18
6.9.7 Thermal bridges of refrigerating units . 18
7 Methods to assess thermal insulation performances of prefabricated walk-in cold
room kits and total power consumption . 19
7.1 General . 19
7.2 Overall heat transfer coefficient of walk-in cold room kits . 19
7.3 Total power consumption of walk-in cold room. 19
8 Installation of walk-in cold rooms . 20
9 Attestation of conformity - Factory Production Control (FPC) . 20
2

---------------------- Page: 4 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
Annex A (normative) Determination of the declared values of thermal resistance and
thermal conductivity . 22
A.1 General . 22
A.2 Input data . 22
A.3 Declared values . 22
Annex B (normative) Determination of the aged values of thermal resistance and thermal
conductivity . 24
B.1 General . 24
B.2 Sampling and conditioning . 25
B.3 Measurement of the initial value of the thermal conductivity . 25
B.4 Evaluation of the thermal conductivity value with the accelerated ageing . 25
B.5 Fixed increments method . 26
B.6 Declaration of the aged values of thermal resistance and thermal conductivity . 28
Annex C (informative) Walk-in cold rooms documentation . 30
Annex D (informative) Guide on installation . 32
D.1 General . 32
D.2 Preliminary provisions . 32
D.3 Installation, assembly and locking of panels . 33
D.4 Maintenance and cleaning of the walk-in cold room . 46
Bibliography . 49

3

---------------------- Page: 5 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
European foreword
This document (EN 16855-1:2017) has been prepared by Technical Committee CEN/TC 44
“Commercial and Professional Refrigerating Appliances and Systems”, 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 July 2017, and conflicting national standards shall be
withdrawn at the latest by July 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.
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.
4

---------------------- Page: 6 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
Introduction
The drafting of this European Standard was driven by 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 also aims to identify the reference standards
for calculation, measurement of insulation properties, to 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.
5

---------------------- Page: 7 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
1 Scope
This European Standard applies to prefabricated walk-in cold room kits and components. It provides
test or calculation methods to assess thermal insulation performances under normal end-use
conditions.
Performance characteristics of walk-in cold rooms are to be assessed in terms of thermal insulating
properties, in order to give a basis on which assessing energy consumption related properties of walk-
in cold rooms, and of their components.
Performance characteristics are to be assessed for every single component of the walk-in cold room,
and for the assembled walk-in cold room as a whole.
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.
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 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 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 14509:2013, Self-supporting double skin metal faced insulating panels - Factory made products -
Specifications
EN ISO 6946, Building components and building elements - Thermal resistance and thermal transmittance
- Calculation method (ISO 6946)
6

---------------------- Page: 8 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
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 10211:2007, Thermal bridges in building construction - Heat flows and surface temperatures -
Detailed calculations (ISO 10211)
EN ISO 14683, Thermal bridges in building construction - Linear thermal transmittance - Simplified
methods and default values (ISO 14683)
ISO 4590, Rigid cellular plastics — Determination of the volume percentage of open cells and of closed
cells
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
walk-in cold room
thermally insulated enclosure kit made of prefabricated 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
prefabricated walk- in cold room kits
walk-in cold room kits delivered to installation sites ready for assembly without any rework of the
sandwich panel
3.1.2
pre-assembled walk-in cold room
walk-in cold room shipped to the customer already assembled, for which no on-site assembly is
required
3.1.3
prefabricated walk-in cold room with floor
walk-in cold room having six insulated walls and equipped with a thermally insulated floor
3.1.4
prefabricated walk-in cold room without floor
walk-in cold room having five insulated walls and without a thermally insulated floor
3.1.5
walk-in cold room components
elements that, when assembled together, compose a walk-in cold room
Note 1 to entry: Components can be for example: panels, doors, corners.
7

---------------------- Page: 9 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
3.2
sandwich panel
building product consisting of two metal faces positioned on either side of a core that is a thermally
insulating material, which is firmly bonded to both faces so that the three components act compositely
when under load
[SOURCE: EN 14509:2013, definition 3.17]
3.3
perimetrical profile
cross section and characteristics of the perimetrical surface of the sandwich panel related to the joint
system, realized with a male-female perimetrical profile, gasket perimetrical profile and camlock
perimetrical profile or a combination of them or none of them
3.3.1
male-female perimetrical profile
design solution that allows sealing, structural resistance, thermal insulation, correct alignment at
installation
3.3.2
gasket perimetrical profile
design solution that allows sealing by embedding into a sandwich panel a sealing material
3.3.3
camlock perimetrical profile
design solution that allows sealing, structural resistance, mechanical locking between adjacent
sandwich panels
3.4
overall heat transfer coefficient
measure of the global insulating thermal performance of a walk-in cold room envelope, assembled with
doors and all ancillaries, in terms of heat flux per unit area per degree difference in temperature
3.5
mean surface area
S
surface area calculated by the geometric mean between the outside surface area and the inside surface
area
3.6
surface heat transfer coefficient
heat flux per unit area per degree difference in temperature
3.7
surface thermal resistance
ratio between temperature difference and heat flux through the surface
3.8
air curtain
technical equipment, producing a controlled stream of air aimed across an opening to create an air seal,
that separates different environments, while allowing flow of traffic and unobstructed vision through
the opening
8

---------------------- Page: 10 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
3.9
strip curtain
provision, made of strips, preventing sudden heat gains, when opening doors
3.10 Types of door
3.10.1
hinged door
door whose actuation takes place by means of rotation of the door leaf around the axis of rotation of the
hinges
3.10.2
sliding door
door whose actuation takes place by means of sliding of the door leaf parallel to the wall
3.10.3
swing door
hinged door whose door leaf can rotate in both directions
3.10.4
roll shutter
door whose actuation takes place by means of rolling and unrolling of the flexible door leaf
3.11
mechanical closing device
mechanical device that helps self-closing of the door, and avoids door leaf to remain ajar, used to reduce
energy losses and keep internal temperature
3.12
door switch device
switch to control evaporator fan motors, internal lighting, alarm and other device improving energy
saving
3.13
thermal bridge
part of the walk-in cold room where the otherwise uniform thermal resistance is significantly changed
by a material and/or geometrical discontinuity
3.13.1
linear thermal bridge
thermal bridge with a uniform cross-section along one of the three orthogonal axes
[SOURCE: EN ISO 10211:2007, definition 3.1.2]
3.13.2
punctual thermal bridge
localized thermal bridge whose influence can be represented by a punctual thermal transmittance
[SOURCE: adapted from EN ISO 10211:2007, definition 3.1.3]
3.14
insulating material
thermally insulated product with a declared thermal conductivity lower than 0,06 W/(mK) at 10°C
9

---------------------- Page: 11 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
3.15
ageing
worsening of the thermal properties of an insulating material or structure along time
3.16
linear thermal transmittance
heat flow rate in the steady state divided by length and by the temperature difference between the
environments on either side of a thermal bridge
3.17
punctual thermal transmittance
heat flow rate in the steady state divided by the temperature difference between the environments on
either side of a thermal bridge (W/K)
3.18
walk-in cold room ceiling
covering of the walk-in cold room
3.19
core
layer of material, having thermal insulating properties, which is bonded or injected between two metal
faces
3.20
face
facing
lightly profiled or profiled thin metal sheet firmly bonded to the core
3.21
fixing (fastening) system
system fastening panels to the supporting system or other components to the panels or components to
each other
3.22
joint
interface between two panels where the meeting edges have been designed to allow the panels to join
together in the same plane
[SOURCE: EN 14509:2013, definition 3.13]
3.23
junction
connection between adjacent panels and corners
Note 1 to entry: For example wall to wall, wall to ceiling, wall to floor.
3.24
storage temperature
target storage temperature which is intended to be maintained within the operating walk-in cold room
3.25
medium storage temperature
MT
any temperature above −5 °C, for chilled perishable items storage
10

---------------------- Page: 12 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
3.26
low storage temperature
LT
any temperature below −5 °C, for frozen perishable items storage
3.27
gross storage volume
internal dimensions of the cold room, measured from floor to ceiling and from left to right (total height
3
x total width x total length in cubic meters (m ))
Note 1 to entry: When measuring in meters, the precision for measurements is to be of two decimals; tolerance
shall be of ± 0,5 cm.
3.28
thermal conductivity
property of a material to conduct heat
3.29
thermal insulation
property of a material of reducing transfer of thermal energy through its thickness
3.30
supporting profile
system not structural part of the building, used to permanently support ceiling panels (when
necessary), cooling systems, and other equipment of the walk in cold room
3.31
significant figure
digit that carry meaning contributing to the number precision, considering that leading zeros and
trailing zeros placeholders merely indicating the scale are not significant
3.32
product sample
part of the sandwich panel or door leaf obtained by cutting in the central part of the same product,
including any facings and core material
3.33
test specimen
slice of core material to be tested, taken from the middle thickness at an equal distance from the
product sample edges
3.34
group of walk-in cold room components
walk-in cold room components of similar chemical and physical characteristics, produced on the same
production line
11

---------------------- Page: 13 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
4 Symbols and abbreviations
2
U overall heat transfer coefficient (W/m K)
tot
2
Uj single component heat transfer coefficient (W/m K)
W heating power (W)
2
S surface (m )
2
R thermal resistance (m K/W)
D thickness (m)
λ thermal conductivity coefficient (W/mK)
2
h surface heat transfer coefficient (W/m K)
l length (m)
Ψ linear thermal transmittance of the joints per metre length of the panel (W/mK)
Χ punctual thermal bridges transmittance (W/K)
Subscripts
n nominal
i internal
e external
c core
f facing
s surface
f fluid (air)
w wall
a air
j generic index
5 Performances
5.1 General
Performance characteristics of walk-in cold rooms shall be assessed in terms of thermal insulating
properties, in order to give a basis on which assessing energy consumption related properties of walk-
in cold rooms, and of their components.
Performance characteristics shall be assessed for every single component of the walk-in cold room and
for the assembled walk-in cold room as a whole.
For the calculations or tests, the reference point for walk-in cold rooms working at medium storage
temperature is T = +5 °C, and for low storage temperature is T = - 18 °C.
12

---------------------- Page: 14 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
5.2 Thermal insulation performances
Thermal insulation performances of walk-in cold room kits are assessed by considering the relevant
characteristic of every single component of a walk-in cold room, which shall be assessed by test and/or
by calculations. Components of walk-in cold rooms can be identified as follows:
1) wall and ceiling panels;
2) floor panels;
3) door(s);
4) window(s);
5) fixing systems and junctions;
6) supporting profiles.
For comparison walk-in cold rooms with and without thermally insulated floor will be considered.
Air infiltration through the open door will be considered in terms of devices to avoid or limit the ingress
of ambient air, from the environment outside the walk-in cold room. A classification of the used device
will be proposed, in order to evaluate the contribution to the improvement of walk-in cold room
performance characteristics in terms of energy consumption.
5.3 Other performances
5.3.1 Air permeability
Considering a useful life of the cold room of 10 years, taking into account the extremely low air
permeability of the metal facings, air permeability of the panels is considered to have negligible effects
on the behaviour of the room. Consequently, no assessment is required.
5.3.2 Water vapour permeability
The content of 5.3.1 is also valid for water vapour permeability.
6 Methods to assess thermal insulation performances of prefabricated walk-in
cold room components
6.1 General
The assessment of energy consumption related characteristics of single components of a walk-in cold
room will be performed considering the following aspects:
1) thermal conductivity of modular panels core;
2) thermal transmittance of wall and ceiling panels;
3) thermal transmittance of floor panels;
4) thermal transmittance of doors;
5) thermal transmittance of windows;
6) thermal transmittance of corners;
7) influence of the supporting profiles.
13

---------------------- Page: 15 ----------------------

SIST EN 16855-1:2017
EN 16855-1:2017 (E)
Gaskets are considered components of the doors, and sealants are considered part of the fixing system
that is tested like reported in the points of this paragraph.
6.2 Thermal conductivity of the insulating core of wall, ceiling and floor panels
Assessment of thermal conductivity of core material of components at 2), 3) and 4) of 6.1 is performed
according to EN 12667 or EN 12939 for products of high thickness.
Thermal conductivity shall be determined according to Annex A and B, and declared by the
manufacturer according to the following conditions:
— average temperature is 10 °C;
— measured values shall be expressed with three significant figures;
— the thermal resistance, R , shall always be declared; the thermal conductivity, λ , shall be declared
D D
when possible;
— the thermal resistance, R , and the thermal conductivity, λ , shall be expressed as representative
D D
limit values of at least 90 % of production, with a level of confidence of 90 %
...