CEN/TR 15615:2008

SLOVENSKI STANDARD
01-november-2008
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Explanation of the general relationship between various European Standards and the
Energy Performance of Buildings Directive (EPBD) - Umbrella document
Ta slovenski standard je istoveten z: CEN/TR 15615:2008
ICS:
91.120.10 Toplotna izolacija stavb Thermal insulation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT
CEN/TR 15615
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
April 2008
ICS 91.140.99
English Version
Explanation of the general relationship between various
European standards and the Energy Performance of Buildings
Directive (EPBD) - Umbrella Document
This Technical Report was approved by CEN on 5 February 2008. It has been drawn up by the Technical Committee CEN/SS B09.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 15615:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Introduction .4
1 Relationship of the standards to the EPBD .5
1.1 Overview.5
1.2 Calculation methodology.5
1.3 Energy performance certificate.6
1.4 Periodic inspections of boilers and air-conditioning systems .6
2 CEN Committees.8
3 Definitions .8
4 Overview of the calculation process .12
5 Outline of the standards .17
5.1 General.17
5.2 Section 1 – Standards concerned with calculation of overall energy use in buildings .17
5.3 Section 2 – Standards concerned with the calculation of delivered energy .18
5.4 Section 3 – Standards concerned with calculation of energy needs for heating and
cooling .18
5.5 Section 4 – Supporting standards .19
5.6 Section 5 – Standards concerned with monitoring and verification of energy performance.19
Annex A Standards arranged by hierarchy.20
Annex B Summarised content of standards, arranged by standard number.23
Annex C Definitions.31
Annex D Common symbols and subscripts .48

Foreword
This document (CEN/TR 15615:2008) has been prepared by CEN/BT/TF 173, the secretariat of which is held
by CMC.
This report refers to EU Directive 2002/91/EC of December 2002 on the Energy Performance of Buildings.
Attention is drawn to the need for observance of EU Directives transposed into national legal requirements.
Existing national regulations (with or without reference to national standards) may restrict for the time being
the implementation of the European standards mentioned in this report.
Introduction
Directive 2002/91/EC on the Energy Performance of Buildings (the EPBD) requires several different measures
to achieve prudent and rational use of energy resources and to reduce the environmental impact of the energy
use in buildings.
This is to be accomplished by increased energy efficiency in both new and existing buildings. One tool for this
will be the application by Member States of minimum requirements on the energy performance of new
buildings and for large existing buildings that are subject to major renovation (EPBD Articles 4, 5 and 6). Other
tools will be energy certification of buildings (Article 7) and inspection of boilers and air-conditioning systems
(Articles 8 and 9).
A basic requirement for measures in Articles 4, 5, 6 and 7 is the existence of a general framework for a
methodology of calculation of the total energy performance of buildings, as set out in Article 3 and the Annex
to the Directive.
This technical report describes the European standards (ENs) that are intended to support the EPBD by
providing the calculation methods and associated material to obtain the overall energy performance of a
building.
In Annex A the standards concerned are arranged in a hierarchical fashion. Section 1 lists standards
concerned with overall energy performance in support of Articles 4 to 7 of the Directive. Sections 2 to 5 list the
standards relating to specific aspects or modules of building energy performance which contribute to the
overall calculation. The content of the individual standards is summarised in Annex B.
Annex C provides a list of definitions, and Annex D a list of principal symbols, that are used consistently in the
standards. It is intended that these annexes will form the basis of a future trilingual standard covering common
definitions and symbols for energy calculations.
Explanation of the general relationship between various European standards
and the Energy Performance of Buildings Directive (EPBD)
1 Relationship of the standards to the EPBD
1.1 Overview
The calculation methodology follows the framework set out in the Annex to the EPBD . The various standards
used in this process are listed in Annex A. Many of the standards deal with specific aspects of the calculation
(e.g. fabric losses, air changes, energy use for lighting, system performance): these aspects are drawn
together in the following items:
EN number Content
EN 15603 Energy use, for space heating, cooling, ventilation, domestic hot water and lighting, inclusive of
system losses and auxiliary energy; and definition of energy ratings
EN 15217 Ways of expressing energy performance (for the energy certificate) and ways of expressing
requirements (for regulations); content and format of energy performance certificate
EN 15378 Boiler inspections
EN 15240 Air-conditioning inspections
EN ISO 13790 Energy needs for heating and cooling (taking account of losses and gains)

The main goal of these standards is to facilitate the implementation of the Directive in Member States. In
consequence they do not prescribe a single definition of energy rating or the expression of energy
performance, but rather give a limited number of options. Similarly the items on inspections offer various
levels of inspection. It is up to national bodies to select one or more of the options given, depending on the
purpose of the calculation and the type and complexity of the buildings and their services.
The four main components set out in the Directive relate to:
 calculation methodology;
 minimum energy performance requirements;
 energy performance certificate;
 inspections of boilers and air-conditioning.
Figure 1 illustrates how the standards are related to articles of the EPBD defining these requirements.
1.2 Calculation methodology
The standards providing the calculation methodology are indicated in Figure 1, either explicitly or by reference
to Annex A.
The calculation methodology is used to determine the data for energy certificates. EN ISO 13790 allows for
different levels of complexity:
 simplified monthly or seasonal calculation;

Directive 2002/91/EC on the Energy Performance of Buildings
 simplified hourly calculation;
 detailed calculation,
which can be chosen according to relevant criteria related to the purpose of the calculation, such as new or
existing buildings or type and/or complexity of the building and its services. The calculations are based on
specified boundary conditions of indoor climate (EN 15251) and external climate. The simplified calculation
methods are fully specified in the EN ISO 13790. The detailed calculation methods are not fully specified in
EN ISO 13790, but any implementation needs to be validated according to the criteria in EN 15265 and the
input and boundary conditions are to be consistent with the fully specified methods. Zoning arrangements
(applicable to all calculation methods) are described in EN ISO 13790.
The characteristics of the technical building systems are included via:
 heating systems, EN 15316-1, EN 15316-2-1, EN 15316-2-3, EN 15316-4 (various parts) and EN 15377;
 cooling systems, EN 15243;
 domestic hot water, EN 15316-3 (various parts);
 ventilation, EN 15241;
 lighting, EN 15193;
 integrated building automation and controls, EN 15232.
1.3 Energy performance certificate
The indicative content of the energy performance certificate is set out in EN 15217. This standard also
includes the definition of the energy performance indicator and different options for the energy performance
classification.
EN 15603 provides ratings to define energy performance. The categories for the purposes of certification are:
2)
 calculated rating, based on calculated energy use under standardised occupancy conditions ;
3)
 measured rating, based on metered energy .
1.4 Periodic inspections of boilers and air-conditioning systems
These standards provide guidelines for the inspection of boilers and heating systems (EN 15378), ventilation
systems (EN 15239) and air-conditioning systems (EN 15240). They provide for different levels of inspection.

2)
Also known as "asset rating"
3)
Also known as "operational rating"
Energy Performance Energy Performance System inspection
Requirements Certificate and assessment
new buildings Articles 4,5 and Recommendations
major renovations Articles 4,6 Article 7 Articles 8, 9
Certificate format and Recommendations for
Energy performance
content improvements
ways of expressing Energy certification Heating systems
energy performance of buildings with boilers
EN 15378
EN 15217 EN 15217
Airconditioning
EN 15240
Total delivered energy
2)
Specific procedures/input procedures for calculated and
for existing buildings measured energy ratings
1)
Ventilation systems
EN 15603
EN 15239
System and building energy needs for space heating, space cooling
humidification, dehumidification, domestic hot water, lightning and
ventilation systems
standards in Sections 2 and 3 of Annex A
Definitions and terminology, external climate data, indoor conditions,
overheating and solar protection, thermal performance of building
components, ventilation and air infiltration, …
standards in Section 4 of Annex A
.
1)
Not explicitly mentioned in the Directive
2)
Unless covered by other standards
Figure 1 – Methodology for calculating energy performance (Article 3 and Annex)
2 CEN Committees
The Technical Committees of CEN that were involved in the preparation of the standards comprise:
CEN/TC 89 Thermal performance of buildings and building components;
CEN/TC 156 Ventilation for buildings;
CEN/TC 169 Light and lighting;
CEN/TC 228 Heating systems in buildings;
CEN/TC 247 Building automation, controls and building management.
The process has been overseen by CEN/BT TF 173, Energy performance of buildings project group, which
coordinated the work so as to ensure that standards prepared in different committees interface with each
other in a suitable way.
3 Definitions
NOTE The definitions given here are those used within the Technical Report. A more extensive list of definitions is
given in Annex C.
3.1
building
construction as a whole, including its envelope and all technical building systems, for which energy is used to
condition the indoor climate, to provide domestic hot water and illumination and other services related to the
use of the building
NOTE The term can refer to the building as a whole or to parts thereof that have been designed or altered to be used
separately.
3.2
new building
for calculated energy rating: building at design stage or under construction
for measured energy rating: buildi
...