SIST-TP CEN/TR 16798-18:2018

Energy performance of buildings - Ventilation for buildings - Part 18: Interpretation of the requirements in EN 16798-17 - Guidelines for inspection of ventilation and air-conditioning systems (Modules M4-11, M5-11, M6-11, M7-11)

This Technical Report refers to standard EN 16798-17:2017, module M4-11, M5-11, M6-11 and M7-11.
It contains information to support the correct understanding and use of this standard.
This Technical Report does not contain any normative provision.
Information regarding features affecting the frequency and duration of inspection is included in 5.2.

Energetische Bewertung von Gebäuden - Lüftung von Gebäuden - Lüftung von Gebäuden - Teil 18: Interpretation der Anforderungen der EN 16798-17 - Leitlinien für die Inspektion von Lüftungs- und Klimaanlagen (Module M4‐11, M5‐11, M6‐11, M7‐11)

Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 18 : Interprétation des exigences de l’EN 16798-17 - Lignes directrices pour l'inspection des systèmes de ventilation et de conditionnement d'air (Module M4-11, M5-11, M6-11, M7-11)

Le présent rapport technique fait référence à la norme prEN 16798 17, module M4 11, M5 11, M6 11 et M7 11.
Il contient des informations permettant d’assurer une compréhension et une utilisation correcte de cette norme.
Le présent rapport technique ne contient pas de disposition normative.
Les informations concernant les éléments ayant une influence sur la fréquence et la durée de l'inspection sont incluses en 5.2.

Energijske lastnosti stavb - Prezračevanje stavb - 18. del: Razlaga in utemeljitev EN 16798-17 - Smernice za pregled sistemov prezračevanja in klimatizacije - Moduli M4-11, M5-11, M6-11, M7-11

To tehnično poročilo se nanaša na module M4-11, M5-11, M6-11 in M7-11 standarda EN 16798-17:2017.
Vsebuje informacije za pomoč pri pravilnem razumevanju in uporabi tega standarda.
To tehnično poročilo ne vsebuje nobenih normativnih določb.
Informacije v zvezi z lastnostmi, ki vplivajo na pogostnost in trajanje pregledov, so podane v točki 5.2.

General Information

• Status: Published
• Public Enquiry End Date: 09-Jan-2017
• Publication Date: 13-Jun-2018
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-May-2018
• Due Date: 22-Jul-2018
• Completion Date: 14-Jun-2018
• Directive: 2010/31/EU - Directive 2010/31/eu of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast)
• Mandate: M/480 - Mandate to CEN, CENELEC and ETSI for the elaboration and adoption of standards for a methodology calculating the integrated energy performance of buildings and promoting the energy efficiency of buildings, in accordance with the terms set in the recast of the Directive on the energy performance buildings (2010/31/EU)
• Ref Project: CEN/TR 16798-18:2017 - Energy performance of buildings - Ventilation for buildings - Part 18: Interpretation of the requirements in EN 16798-17 - Guidelines for inspection of ventilation and air-conditioning systems (Modules M4-11, M5-11, M6-11, M7-11)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 16798-18:2018
01-julij-2018
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Energy performance of buildings - Ventilation for buildings - Part 18: Interpretation of the
requirements in EN 16798-17 - Guidelines for inspection of ventilation and air-
conditioning systems (Modules M4-11, M5-11, M6-11, M7-11)
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,QVSHNWLRQYRQ/IWXQJVXQG.OLPDDQODJHQ0RGXOH0"0"0"0"
Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 18 :
Interprétation des exigences de l’EN 16798-17 - Lignes directrices pour l'inspection des
systèmes de ventilation et de conditionnement d'air (Module M4-11, M5-11, M6-11, M7-
11)
Ta slovenski standard je istoveten z: CEN/TR 16798-18:2017
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
SIST-TP CEN/TR 16798-18:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 16798-18:2018

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SIST-TP CEN/TR 16798-18:2018


CEN/TR 16798-18
TECHNICAL REPORT

RAPPORT TECHNIQUE

June 2017
TECHNISCHER BERICHT
ICS 91.120.10; 91.140.30
English Version

Energy performance of buildings - Ventilation for buildings
- Part 18: Interpretation of the requirements in EN 16798-
17 - Guidelines for inspection of ventilation and air-
conditioning systems (Modules M4-11, M5-11, M6-11, M7-
11)
Performance énergétique des bâtiments - Ventilation Energetische Bewertung von Gebäuden - Lüftung von
des bâtiments - Partie 18 : Interprétation des Gebäuden - Lüftung von Gebäuden - Teil 18:
exigences de l'EN 16798-17 - Lignes directrices pour Interpretation der Anforderungen der EN 16798-17 -
l'inspection des systèmes de ventilation et de Leitlinien für die Inspektion von Lüftungs- und
conditionnement d'air (Module M4-11, M5-11, M6-11, Klimaanlagen (Module M4-11, M5-11, M6-11, M7-11)
M7-11)


This Technical Report was approved by CEN on 27 February 2017. It has been drawn up by the Technical Committee CEN/TC
156.

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. CEN/TR 16798-18:2017 E
worldwide for CEN national Members.

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Contents Page
European foreword . 4
Introduction . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Symbols, subscripts and abbreviations. 10
5 Description of the inspection procedures . 10
5.1 Purpose of the inspection. 10
5.2 Methods . 10
5.2.1 Features affecting the frequency and duration of inspection . 10
5.2.2 Examples of elements to define system categories . 12
5.2.3 Recommendations for the extent of the inspection . 13
5.3 Pre-inspection procedure . 32
5.3.1 General . 32
5.3.2 Design documentation . 33
5.3.3 System characteristics . 33
5.3.4 Building and system operation and maintenance status . 33
5.3.5 Buildings and system survey . 33
5.3.6 Output of the pre-inspection . 33
5.4 Cleanliness and accessibility of the system . 35
5.5 Sampling for on-site checks . 35
6 Method 1 – Ventilation-only systems . 37
6.1 General . 37
6.2 Output data . 37
6.3 Follow-up of pre-inspection . 40
6.4 Methodology . 40
6.4.1 General approach . 40
6.4.2 Mechanical exhaust and/or supply systems . 40
6.4.3 Natural ventilation . 42
6.4.4 Hybrid ventilation . 42
6.5 Advice for improvements . 42
6.5.1 Energy impacts, justification of inspection and improvements . 42
6.5.2 Basic improvements . 45
6.5.3 Further improvements — Ventilation only systems . 47
7 Method 2 – Air conditioning systems . 50
7.1 General . 50
7.2 Output data . 50
7.2.1 Possible outputs of an energy inspection . 50
7.2.2 General sizing issues . 53
7.2.3 Estimating cooling loads . 53
7.2.4 Assessment of cooling capacity . 54
7.3 Follow-up of pre-inspection . 55
7.4 Methodology . 55
7.4.1 General approach . 55
7.4.2 Refrigeration equipment . 55
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7.4.3 Pumps and chilled water pipe work . 56
7.4.4 Outdoor heat rejection devices . 57
7.4.5 Water and refrigerant-based terminal units . 57
7.4.6 Mechanical ventilation . 58
7.4.7 Building system controls and control parameters . 59
7.4.8 Metering . 60
7.5 Advice on alternative solutions and improvements . 61
7.5.1 General . 61
7.5.2 Energy impacts, justification of inspection and improvements . 61
7.5.3 Improvement system efficiency of AC-systems . 62
8 Inspection report . 64
9 Quality control . 64
Bibliography . 65

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European foreword
This document (CEN/TR 16798-18:2017) has been prepared by Technical Committee CEN/TC 156
“Ventilation for buildings”, the secretariat of which is held by BSI.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] 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.
The necessary editorial revisions were made to comply with the requirements for each EPB technical
report.
This document has been produced to meet the requirements of Directive 2010/31/EU 19 May 2010 on
the energy performance of buildings (recast), referred to as “recast EPDB”.
For the convenience of Standards users CEN/TC 156, together with responsible Working Group
Conveners, have prepared a simple table below relating, where appropriate, the relationship between
the ‘EPBD’ and ‘recast EPBD’ standard numbers prepared by Technical Committee CEN/TC 156
“Ventilation for buildings”.
EPBD EN Recast EPBD EN
Title
Number Number
Energy performance of buildings – Ventilation for buildings –
Part 1: Indoor environmental input parameters for design
EN 15251 EN 16798-1 and assessment of energy performance of buildings
addressing indoor air quality, thermal environment, lighting
and acoustics (Module M1-6)
Energy performance of buildings – Ventilation for buildings –
Part 2: Interpretation of the requirements in EN 16798-1 –
Indoor environmental input parameters for design and
N/A CEN/TR 16798-2
assessment of energy performance of buildings addressing
indoor air quality, thermal environment, lighting and
acoustics (Module M1-6)
Energy performance of buildings – Ventilation for buildings –
Part 3: For non-residential buildings – Performance
requirements for ventilation and room-conditioning systems
EN 13779 EN 16798-3
(Modules M5-1, M5-4)

Energy performance of buildings – Ventilation for buildings –
Part 4: Interpretation of the requirements in EN 16798- 3 –
N/A CEN/TR 16798-4 For non-residential buildings – Performance requirements
for ventilation and room-conditioning systems (Modules M5-
1, M5-4)
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Energy performance of buildings – Ventilation for buildings –
Part 5-1: Calculation methods for energy requirements of
ventilation and air conditioning systems (Modules M5-6, M5-
EN 15241 EN 16798-5-1
8, M6-5, M6-8, M7-5, M7-8) – Method 1: Distribution and
generation

Energy performance of buildings – Ventilation for buildings –
Part 5-2: Calculation methods for energy requirements of
ventilation systems (Modules M5-6.2, M5-8.2) – Method 2:
EN 15241 EN 16798-5-2
Distribution and generation

Energy performance of buildings – Ventilation for buildings –
Part 6: Interpretation of the requirements in EN 16798-5–1
N/A CEN/TR 16798-6 and EN 16798-5-2 – Calculation methods for energy
requirements of ventilation and air conditioning systems
(Modules M5-6, M5-8, M 6-5, M6-8 , M7-5, M7-8)
Energy performance of buildings – Ventilation for buildings –
Part 7: Calculation methods for the determination of air flow
EN 15242 EN 16798-7
rates in buildings including infiltration (Module M5-5)

Energy performance of buildings – Ventilation for buildings –
Part 8: Interpretation of the requirements in EN 16798-7 –
N/A CEN/TR 16798-8
Calculation methods for the determination of air flow rates in
buildings including infiltration – (Module M5-5)
Energy performance of buildings – Ventilation for buildings –
EN 15243 EN 16798-9 Part 9: Calculation methods for energy requirements of
cooling systems (Modules M4-1, M4-4, M4-9) – General
Energy performance of buildings – Ventilation for buildings –
Part 10: Interpretation of the requirements in EN 16798-9 –
Calculation methods for energy requirements of cooling
N/A CEN/TR 16798-10
systems (Module M4-1,M4-4, M4-9) – General

Energy performance of buildings – Ventilation for buildings –
EN 15243 EN 16798-13 Part 13: Calculation of cooling systems (Module M4-8) –
Generation
Energy performance of buildings – Ventilation for buildings –
EN 15243 CEN/TR 16798-14 Part 14: Interpretation of the requirements in EN 16798-13 –
Calculation of cooling systems (Module M4-8) – Generation
Energy performance of buildings – Ventilation for buildings –
N/A EN 16798-15 Part 15: Calculation of cooling systems (Module M4-7) –
Storage
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Energy performance of buildings – Ventilation for buildings –
N/A CEN/TR 16798-16 Part 16: Interpretation of the requirements in EN 16798-15 –
Calculation of cooling systems (Module M4-7) – Storage
Energy performance of buildings – Ventilation for buildings –
EN 15239 and
EN 16798-17 Part 17: Guidelines for inspection of ventilation and air-
EN 15240
conditioning systems (Module M4-11, M5-11, M6-11, M7-11)
Energy performance of buildings – Ventilation for buildings –
Part 18: Interpretation of the requirements in EN 16798-17 –
N/A CEN/TR 16798-18
Guidelines for inspection of ventilation and air-conditioning
systems (Module M4-11, M5-11, M6-11, M7-11)

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Introduction
The set of EPB standards, Technical Reports and supporting tools
In order to facilitate the necessary overall consistency and coherence, in terminology, approach,
input/output relations and formats, for the whole set of EPB-standards, the following documents and
tools are available:
a) a document with basic principles to be followed in drafting EPB-standards:
CEN/TS 16628:2014, Energy Performance of Buildings - Basic Principles for the set of EPB
standards [1];
b) a document with detailed technical rules to be followed in drafting EPB-standards;
CEN/TS 16629:2014, Energy Performance of Buildings - Detailed Technical Rules for the set of
EPB-standards [2]; and
c) the detailed technical rules are the basis for the following tools:
1) a common template for each EPB-standard, including specific drafting instructions for the
relevant clauses,
2) a common template for each technical report that accompanies an EPB standard or a cluster of
EPB standards, including specific drafting instructions for the relevant clauses, and
3) a common template for the spreadsheet that accompanies each EPB standard, to demonstrate
the correctness of the EPB calculation procedures.
Each EPB-standards follows the basic principles and the detailed technical rules and relates to the
overarching EPB-standard, EN ISO 52000-1:2017 [3].
One of the main purposes of the revision of the EPB-standards is to enable that laws and regulations
directly refer to the EPB-standards and make compliance with them compulsory. This requires that the
set of EPB-standards consists of a systematic, clear, comprehensive and unambiguous set of energy
performance procedures. The number of options provided is kept as low as possible, taking into
account national and regional differences in climate, culture and building tradition, policy and legal
frameworks (subsidiarity principle). For each option, an informative default option is provided
(Annex B).
Rationale behind the EPB technical reports
There is a risk that the purpose and limitations of the EPB standards will be misunderstood, unless the
background and context to their contents – and the thinking behind them – is explained in some detail
to readers of the standards. Consequently, various types of informative contents are recorded and made
available for users to properly understand, apply and nationally or regionally implement the EPB
standards.
If this explanation would have been attempted in the standards themselves, the result is likely to be
confusing and cumbersome, especially if the standards are implemented or referenced in national or
regional building codes.
Therefore, each EPB standard is accompanied by an informative technical report, like this one, where all
informative content is collected, to ensure a clear separation between normative and informative
contents (see CEN/TS 16629 [2]):
— to avoid flooding and confusing the actual normative part with informative content,
— to reduce the page count of the actual standard, and
— to facilitate understanding of the set of EPB standards.
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This was also one of the main recommendations from the European CENSE project [4] that laid the
foundation for the preparation of the set of EPB standards.
This Technical Report
This Technical Report accompanies and complements EN 16798-17:2017 by providing informative
explanations and guidance to support the application of the normative content of the standard, taking
into account the requirements and options of the Recast Energy Performance of Buildings Directive [11]
(abbreviated as EPBD).
Air conditioning inspection may be carried out at any time and for a variety of purposes. It may, for
example, be part of a routine maintenance programme, though this may not include every part of the
guidance in the standard or technical report. Experience shows that inspections typically identify
measures that can result in tangible energy and running cost savings that require little or no capital
expenditure. However, these measures represent only a small proportion of the savings that are
technically possible. Inspections can also confirm that some potential sources of energy wastage are not
actually present.
The focus of the EPBD inspection requirements is to prevent energy wastage. However, measures to
reduce energy consumption should not be at the expense of the indoor environment, in particular
indoor air quality.
The specific requirements of the EPBD given in the corresponding article are the following:
— Article 15 requires the introduction of “measures to establish a regular inspection of the accessible
parts of air-conditioning systems of an effective rated output of more than 12 kW. The inspection
shall include an assessment of the air-conditioning efficiency and the sizing compared to the
cooling requirements of the building.”
— Article 16 requires that “an inspection report should be issued and handed to the owner or tenant
of the building after each inspection of a heating or air-conditioning system”. The inspection report
should contain the result of the inspection performed in accordance with Article 14 or Article 15
and include recommendations for the cost-effective improvement of the energy performance of the
inspected system. These measures should take into account climatic and local conditions as well as
indoor climate environment and should not affect other requirements concerning buildings such as
accessibility, safety and the intended use of the building.
— The recommendations may be based on a comparison of the energy performance of the system
inspected with that of the best available feasible system and a system of similar type for which all
relevant components achieve the level of energy performance required by the applicable
legislation.
— Alternatively, Member States “may opt to take measures to ensure the provision of advice to users
on the replacement of air-conditioning systems or on other modifications to the air-conditioning
system which may include inspections to assess the efficiency and appropriate size of the air-
conditioning system.”
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1 Scope
This Technical Report refers to standard EN 16798-17:2017, module M4-11, M5-11, M6-11 and M7-11.
It contains information to support the correct understanding and use of this standard.
This Technical Report does not contain any normative provision.
Information regarding features affecting the frequency and duration of inspection is included in 5.2.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this technical report 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.
prEN 16798-1:2015, Energy performance of buildings — Ventilation for buildings — Part 1: Indoor
environmental input parameters for design and assessment of energy performance of buildings addressing
indoor air quality, thermal environment, lighting and acoustics — Module M1-6
EN 16798-3:2017, Energy performance of buildings — Ventilation for buildings — Part 3: For non-
residential buildings — Performance requirements for ventilation and room-conditioning systems
(Modules M5-1, M5-4)
EN 16798-9:2017, Energy performance of buildings — Ventilation for buildings — Part 9: Calculation
methods for energy requirements of cooling systems (Module M4-1, M4-4, M4-9 ) — General
prEN 16798-11:2015, Energy performance of buildings — Part 11: Module M4-3 — Calculation of the
design cooling load
EN 16798-13:2017, Energy performance of buildings — Ventilation for buildings — Part 13: Calculation
of cooling systems (Module M4-8) — Generation
EN 16798-17:2017, Energy performance of buildings — Ventilation for buildings — Part 17: Guidelines
for inspection of ventilation and air conditioning systems (Module M4-11, M5-11, M6-11, M7-11)
EN 1507, Ventilation for buildings — Sheet metal air ducts with rectangular section — Requirements for
strength and leakage
EN 12237, Ventilation for buildings — Ductwork — Strength and leakage of circular sheet metal ducts
EN 12792, Ventilation for buildings — Symbols, terminology and graphical symbols
EN 14511-1, Air conditioners, liquid chilling packages and heat pumps with electrically driven
compressors for space heating and cooling — Part 1: Terms, definitions and classification
EN ISO 7345:1995, Thermal insulation — Physical quantities and definitions (ISO 7345:1987)
EN ISO 52000-1:2017, Energy performance of buildings — Overarching EPB assessment — Part 1:
General framework and procedures (ISO 52000-1:2017)
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345:1995,
EN ISO 52000-1:2017, EN 16798-17:2017, EN 12792 and EN 14511-1 apply.
NOTE More information on some key EPB terms and definitions is given in CEN ISO/TR 52000-2:2017 [3].
4 Symbols, subscripts and abbreviations
For the purposes of this document, the symbols, subscripts and abbreviations given in
EN ISO 52000-1:2017 and in EN 16798-17:2017 apply.
5 Description of the inspection procedures
5.1 Purpose of the inspection
EN 16798-17:2017 requires that the recommendations include an indication of their probable cost-
effectiveness.
These recommendations are meant to encourage the system owner to undertake actions but they do
not require action from the owner.
To increase the likelihood that the proposed improvements are implemented, the inspection report
should stress improvements that are obviously needed to allow the system to function well and that are
cost-effective over a relatively short time period.
Detailed cost-effectiveness studies are outside the scope of EN 16798-17:2017. However, the advice can
include recommendations for detailed costs analyses, in particular, when an opportunity for
improvement is not obvious as a result of the inspection.
5.2 Methods
5.2.1 Features affecting the frequency and duration of inspection
5.2.1.1 General
The minimum contents and frequency of mandatory inspection is defined on national level, with a
recommended default value of five years for ventilation and air-conditioning systems. Inspection
including the buildings is recommended every ten years. On voluntary basis, more extensive and more
frequent inspections are possible.
The inspection may be more or less frequent, depending on the following:
— type of building;
— energy impact of the system;
— type of equipment;
— quality of system documentation;
— availability of records of measurements and/or energy check consumption metering; and
— quality of maintenance.
For centralized systems for cooling and ventilation, different parts and system components may require
more frequent checks, and in this case the corresponding records should be available for inspection.
After the initial inspection, the time for the next inspection may be longer or shorter depending on the
results from the initial inspection and on the level of maintenance.
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The outcome of the inspection is to generate advice for the owner or manager to improve the system, or
improve system maintenance. A part of that advice is to recommend more frequent routine inspection
and maintenance, for a good practice maintenance programme. The advice shoul
...