CEN Guide 18:2021

SLOVENSKI STANDARD
01-maj-2021
Plinske naprave in fitingi - Smernice za vključitev bistvenih zahtev Uredbe
2016/426/EU o plinskih napravah v evropske standarde
Gas Appliances and Fittings - Guidelines for the implementation of Essential
Requirements of Gas Appliances Regulation 2016/426/EU in European standards
Ta slovenski standard je istoveten z: CEN Guide 18:2021
ICS:
01.120 Standardizacija. Splošna Standardization. General
pravila rules
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN
GUIDE
Gas Appliances and Fittings –
Guidelines for the
implementation of Essential
Requirements of Gas Appliances
Regulation 2016/426/EU in
European Standards
Edition 1, 2021-02
CEN decided to adopt this new CEN Guide 18 through CEN/BT Resolution C247/2020.

European Committee for Standardization

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Tel: +32 2 550 08 11
Fax: +32 2 550 08 19
www.cen.eu
Contents Page
Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 General principles . 4
5 Principles to be considered during drafting process . 4
Bibliography . 20

Foreword
This document (CEN Guide 18:2021) has been prepared by Technical Committee CEN/SFG_U “Sub
Forum Gas Utilization”, the secretariat of which is held by AFNOR.
This document is intended for the use of Technical Committees writing product and/or supporting
standards in the field of gas appliances and fittings.
It gives guidelines for the development of standards to support the Essential Requirements of the Gas
Appliances Regulation (EU) 2016/426.
As a response to the increased number of standards dealing with gas appliances and fittings not
published in the Official Journal of the European Union, the relevant Gas Technical Committees have
undertaken publication of guidelines for the implementation of Essential Requirements of GAR in
European gas product standards, supplementing the CEN/CENELEC Internal Regulations, Part 3:2019,
which sets out general principles and requirements for all European Standards.
1 Scope
This document presents guidelines for the implementation of Essential Requirements of Gas Appliances
Regulation (EU) 2016/426 into hEN candidates for citation in the OJEU.

This document gives guidance that is additional to the CEN/CENELEC Internal Regulations, Part 3:2019,
when this is necessary owing to the special requirements of gas appliances and fittings.

This document is intended for the drafting of gas appliances and fittings standards.
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.
CEN/CENELEC Internal Regulations, Part 3:2019, Principles and rules for the structure and drafting of
CEN and CENELEC documents (ISO/IEC Directives Part 2:2018, modified)
EN 1672-2:2005+A1:2009, Food processing machinery — Basic concepts — Part 2: Hygiene requirements
EN 60335-2-102:2016, Household and similar electrical appliances — Safety — Particular requirements
for gas, oil and solid-fuel burning appliances having electrical connections (IEC 60335-2-102:2004,
modified)
EN 60730-1, Automatic electrical controls — Part 1: General requirements (IEC 60730-1)
EN ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the CEN/CENELEC Internal
Regulations, Part 3:2019 apply.
4 General principles
The CEN/CENELEC Internal Regulations, Part 3:2019 should be used in conjunction with this document
when preparing a new standard dealing with gas appliances and fittings or revising an existing one.
In general, the standards should not repeat or paraphrase the text of other reference standards;
however, for better understanding of standards, it is acceptable to repeat a basic definition, concept or
the scope of the standard.
5 Principles to be considered during drafting process
5.1 Checklist to be considered during drafting process
At least the following items of the standard should be checked before filling out the Annex ZA:
1) Clear follow up of comments on former assessment sometimes by the TC;
2) Information indicating significant changes in the foreword of the revised or amended standard;
3) It is essential to follow rules for the use of verbal forms so that a clear distinction can be made
between requirements (shall), recommendations (should), permissions (may), possibilities and
capabilities (can);
4) All normative references dated;
5) State of the art for fulfilling the Essential Requirement of the GAR to be taken into account;
6) For incorporated fittings the relevant ER have to be taken into account;
7) Adequate method/test to verify each requirement (e.g. visual inspection is not sufficient in all
cases…);
8) Clear separation between requirements and test conditions in the same clause;
9) No requirements to the manufacturer, test laboratory, installer, etc. in a product standard;
10) No items concerning quality control, etc. in a product standard;
11) Lex Specialis: The rational use of energy essential requirement laid down in point 3.5 of Annex I to
this Regulation does not apply to appliances covered by a measure adopted pursuant to Article 15 of
Directive 2009/125/EC;
12) Requirements for parts/material coming into contact with food and water are essential, no
reference to Regulation 1935/2004 as all relevant Regulations have to be applied;
13) No mixture of “instructions”, GAR is using installation instructions for the installer, instructions for
use/maintenance/servicing (intended for the user) and technical documentation (which shall
make it possible to assess the product);
14) No “country of destination” or “Official language(s)” as GAR is only talking of “languages easily
understood by consumers, appliance manufacturers, the market surveillance authorities and other
end-users” in clauses relevant for Annex ZA;
15) Check the numbering of the standard.
5.2 Implementation of Essential Requirements
For the implementation of Essential Requirements of Gas Appliances Regulation (UE) 2016/426, the
following Table 1 gives some guidelines.

FAQ document from Member States : https://ec.europa.eu/growth/sectors/pressure-gas/gas-
appliances/regulation_en
GAR, chapter II, article 7, 6) and 7) : https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32016R0426
Table 1 — Guidelines to implement Essential Requirements of GAR (EU) 2016/426
Essential Requirements ANNEX I of Regulation WG 8 proposals - WG 8 proposals WG 8 proposals Explanation
(EU) 2016/426 Clause(s)/sub-clause(s) Remarks - Notes and examples
of this EN - Type of (general for all TCs)
clauses to be addressed
in the standard
PRELIMINARY OBSERVATIONS:
1.  The essential requirements laid down in this
Regulation are compulsory.
2.  The essential requirements are to be
interpreted and applied in such a way as to take
into account the state of the art and current
practice at the time of design and manufacture as
well as technical and economic considerations
which are consistent with a high degree of energy
efficiency and of health and safety protection.
1.  GENERAL REQUIREMENTS
1.1.  Appliances shall be so designed and Reference shall be given The standard supports This ER is dealing with “normal
constructed as to operate safely and present no to clauses indicating this ER. In addition, all use”.
danger to persons, domestic animals or property, normal use relevant ER as referenced

when normally used. for ER 2 up to 3.7 shall be
Fittings shall be so designed and constructed as to concerned
fulfil correctly their intended purpose when
incorporated into an appliance or assembled to
constitute an appliance.
1.2.  The manufacturer is under an obligation to No clauses reference No remarks The standard is based on a risk
analyse the risks in order to identify those which assessment (see CEN/CENELEC
apply to his appliance or fitting. He shall then Internal Regulations and Blue
design and construct it taking into account its risk Guide), e.g. the foreword could
assessment. explain the risk assessment
approach during the drafting of the
standard.
Essential Requirements ANNEX I of Regulation WG 8 proposals - WG 8 proposals WG 8 proposals Explanation
(EU) 2016/426 Clause(s)/sub-clause(s) Remarks - Notes and examples
of this EN - Type of (general for all TCs)
clauses to be addressed
in the standard
1.3.  In selecting the most appropriate solutions, No clauses reference No remarks The standard is based on a risk
the manufacturer shall apply the principles set out assessment (see CEN/CENELEC
below, in the following order: Internal Regulations and Blue
(a) eliminate or reduce risks as far as possible Guide), e.g. the foreword could
(inherently safe design and construction); explain the risk assessment
(b) take the necessary protection measures in approach during the drafting of the
relation to risks that cannot be eliminated; standard.
(c) inform users of the residual risks due to any
shortcomings of the protection measures adopted
and indicate whether any particular precautions
are required.
1.4.  When designing and constructing the No clauses reference No remarks This general requirement has to be
appliance, and when drafting the instructions, the considered during the drafting of
manufacturer shall envisage not only the intended this standard.
use of the appliance, but also the reasonably
foreseeable uses.
1.5.  All appliances shall: Refer to clauses that See ER 1.6.1, ER 1.6.2, ER
indicate presence of 1.6.3
instructions and notices
(a) be accompanied by instructions for installation  see ER 1.6.1
intended for the installer;
(b) be accompanied by instructions for use and  see ER 1.6.2
servicing, intended for the user;
Essential Requirements ANNEX I of Regulation WG 8 proposals - WG 8 proposals WG 8 proposals Explanation
(EU) 2016/426 Clause(s)/sub-clause(s) Remarks - Notes and examples
of this EN - Type of (general for all TCs)
clauses to be addressed
in the standard
(c) bear appropriate warning notices, which shall  see ER 1.6.3
also appear on the packaging.
1.6.1.  The instructions for installation intended for Refer to the clauses No remarks Specific clauses given details on
the installer shall contain all the instructions for containing the installations and adjustment
installation, adjustment and servicing required to requirements the (information on the technical
ensure that those operations are correctly instructions for specifications of the interface
performed so that the appliance may be used installation for the between the appliance and its
safely. installer installation environment, correct
The instructions for installation intended for the connection to the gas supply
installer shall include also information on the network, the supply of auxiliary
technical specifications of the interface between energy, the combustion air supply
the appliance and its installation environment and the flue gas evacuation
allowing its correct connection to the gas supply system) and other requirements
network, the supply of auxiliary energy, the covered by other clauses.
combustion air supply and the flue gas evacuation The risk assessment of the
system. appliance may reveal that there is
a need for additional instructions
not covered by the risk assessment
made for this standard.
Essential Requirements ANNEX I of Regulation WG 8 proposals - WG 8 proposals WG 8 proposals Explanation
(EU) 2016/426 Clause(s)/sub-clause(s) Remarks - Notes and examples
of this EN - Type of (general for all TCs)
clauses to be addressed
in the standard
1.6.2.  The instructions for use and servicing Refer to the clauses No remarks Specific clauses given details on
intended for the user shall contain all the containing the instructions for use and servicing
information required for safe use and in particular requirements the (all the information required for
shall draw the user's attention to any restrictions instructions for use and safe use and in particular shall
on use. servicing for the user draw the user's attention to any
The manufacturers shall note in th
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