prEN 15780

SLOVENSKI STANDARD
01-april-2024
Prezračevanje stavb - Kanali - Čistoča prezračevalnih sistemov
Ventilation for buildings - Ductwork - Cleanliness of ventilation systems
Lüftung von Gebäuden - Luftleitungen - Sauberkeit von Lüftungsanlagen
Ventilation des bâtiments - Réseaux de conduits - Propreté des systèmes de ventilation
Ta slovenski standard je istoveten z: prEN 15780
ICS:
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2024
ICS 91.140.30 Will supersede EN 15780:2011
English Version
Ventilation for buildings - Ductwork - Cleanliness of
ventilation systems
Ventilation des bâtiments - Réseaux de conduits - Lüftung von Gebäuden - Luftleitungen - Sauberkeit von
Propreté des systèmes de ventilation Lüftungsanlagen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 156.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15780:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols and units . 7
5 Criteria for cleanliness and assessment . 8
5.1 General considerations . 8
5.2 Assessment of the need for cleaning . 8
5.3 Design and handing over information . 8
5.4 Determination of cleaning interval . 9
5.5 Assessment of the cleanliness level after cleaning . 9
6 Methodology . 9
6.1 General. 9
6.2 Assessment methodology . 11
6.3 Cleaning plan . 12
6.4 Cleaning methods . 12
7 Evaluation and reporting . 13
7.1 General. 13
7.2 Evaluation of cleaning . 13
7.3 Cleaning report . 13
Annex A (informative)  Cleanliness quality classes of ventilation systems . 14
A.1 General. 14
A.2 Application in general . 14
A.3 Assessment frequency recommendation . 14
A.4 Cleanliness class quality measurements air ventilation system . 15
A.5 Acceptable dust accumulation level for new ductwork . 16
Annex B (informative)  Example of cleaning plan for air ventilation system . 17
B.1 General. 17
B.2 Cleaning plan . 17
Annex C (informative)  Air handling units – specific guidance . 20
C.1 General. 20
C.2 Recommendations for all cleanliness quality classes. 20
C.3 Inspection aspects . 21
Annex D (informative)  Specific guidance for filters in air handling units . 22
Annex E (informative)  Specific guidance for humidifiers in air handling units . 23
Annex F (informative) Ductwork – Specific installation guidance for air ventilation system
................................................................................................................................................................... 24
F.1 Acceptable dust accumulation for new ductwork . 24
F.2 Protection, delivery and installation (PDI) . 24
F.3 Application of cleanliness levels – airtightness . 26
Annex G (informative) Terminal devices and units – Specific guidance air ventilation system
................................................................................................................................................................... 27
Annex H (informative) Measurement methods for dust accumulation - Air ventilation system
................................................................................................................................................................... 28
H.1 Evaluation methods of dust accumulation . 28
H.2 Summary of methods for evaluation of cleanliness . 29
Annex I (informative)  European vacuum test method for measuring dust accumulation in
air ventilation systems . 31
I.1 Test equipment. 31
I.2 Sampling procedure . 31
I.3 Analysis procedure . 32
Annex J (informative) Kitchen extract equipment – Specific guidance . 33
J.1 General . 33
J.2 Ventilation hood . 33
J.3 Canopy/extract plenum . 33
J.4 Ducting . 33
J.5 Fire dampers . 33
J.6 Flexible ductwork . 33
J.7 Sound attenuators . 33
J.8 Turning vanes . 34
J.9 Extract fan . 34
J.10 Discharge duct . 34
J.11 Carbon filtration . 34
J.12 Installations for treatment of aerosols . 34
J.13 Assessment of need for cleaning . 34
J.14 Assessment of pre- and post-cleaning result . 35
J.15 Cleaning . 35
J.16 Cleaning report . 35
J.17 Preferred method of verifying grease deposits . 36
J.18 System access . 37
J.19 Calculation of cleaning frequency . 38
Annex K (informative) Wiping test method to evaluate cleanliness on site . 40
K.1 General Information . 40
K.2 Test Equipment. 40
K.3 Sampling procedure . 40
K.4 Analysis procedure . 41
K.5 Acceptable cleanliness level . 41
Bibliography . 42

European foreword
This document (prEN 15780:2024) has been prepared by Technical Committee CEN/TC 156 “Ventilation
for buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN
...