Equipment for commercial kitchens - Components for ventilation in commercial kitchens - Part 5: Air duct - Design and dimensioning

This standard applies to air ducts of ventilation systems in kitchens and other food processing facilities which
are, according to their type and construction, intended for commercial use. It does not apply to domestic
kitchens and the space between the kitchen ventilation ceiling and the ceiling of the building situated above it
(ceiling pressure rooms).
This standard specifies specific requirements for the design, installation and maintenance of air passages
including safety-relevant, ergonomic and sanitary features and their examination.

Großküchengeräte - Einrichtungen zur Be- und Entlüftung von gewerblichen Küchen - Teil 5: Luftleitungen

Diese Norm gilt für Luftleitungen von Be- und Entlüftungssystemen in Küchen und anderen
lebensmittelverarbeitenden Betrieben, die nach Art und Ausführung für den gewerbsmäßigen Gebrauch
bestimmt sind. Sie gilt nicht für Haushaltsküchen und Räume zwischen der Küchenlüftungsdecke und einer
darüber liegenden Gebäudedecke (Deckendruckräume).
Diese Norm legt spezifische Anforderungen für die Projektierung, Montage und Instandhaltung von
Luftleitungen, einschließlich der sicherheitstechnischen, ergonomischen und hygienischen Merkmale und
deren Prüfung fest.

Equipement pour cuisines professionnelles - Eléments de ventilation pour cuisines professionnelles - Partie 5: Conduit d'air - Conception et dimensionnement

La présente norme s'applique aux conduits d'air des systèmes de ventilation installés dans les cuisines et autres installations de transformation des produits alimentaires destinées à un usage commercial de par leur nature et leur fabrication. Elle ne s'applique pas aux cuisines domestiques et à l'espace entre le plafond ventilé de cuisine et le plafond du bâtiment situé au-dessus de lui (espaces de pression de plafond).
La présente norme spécifie les exigences spécifiques relatives à la conception, à l'installation et à l'entretien des passages d'air, y compris les aspects liés à la sécurité, à l'ergonomie et à l'hygiène et leur contrôle.

Oprema za komercialne kuhinje - Sestavni deli za prezračevanje v komercialnih kuhinjah - 5. del: Zračni kanali - Projektiranje in dimenzioniranje

General Information

Status
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Current Stage
4098 - Decision to abandon - Enquiry
Due Date
08-Apr-2013
Completion Date
08-Apr-2013

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SLOVENSKI STANDARD
oSIST prEN 16282-5:2011
01-september-2011
2SUHPD]DNRPHUFLDOQHNXKLQMH6HVWDYQLGHOL]DSUH]UDþHYDQMHYNRPHUFLDOQLK
NXKLQMDKGHO=UDþQLNDQDOL3URMHNWLUDQMHLQGLPHQ]LRQLUDQMH

Equipment for commercial kitchens - Components for ventilation in commercial kitchens -

Part 5: Air duct - Design and dimensioning

Großküchengeräte - Einrichtungen zur Be- und Entlüftung von gewerblichen Küchen -

Teil 5: Luftleitungen

Equipement pour cuisines professionnelles - Eléments de ventilation pour cuisines

professionnelles - Partie 5: Conduit d'air - Conception et dimensionnement
Ta slovenski standard je istoveten z: prEN 16282-5
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning
97.040.99 Druga kuhinjska oprema Other kitchen equipment
oSIST prEN 16282-5:2011 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 16282-5:2011
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oSIST prEN 16282-5:2011
EUROPEAN STANDARD
DRAFT
prEN 16282-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2011
ICS 97.040.99
English Version
Equipment for commercial kitchens - Components for ventilation
in commercial kitchens - Part 5: Air duct - Design and
dimensioning

Equipement pour cuisines professionnelles - Eléments de Großküchengeräte - Einrichtungen zur Be- und Entlüftung

ventilation pour cuisines professionnelles - Partie 5: von gewerblichen Küchen - Teil 5: Luftleitungen

Conduit d'air - Conception et dimensionnement

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16282-5:2011: E

worldwide for CEN national Members.
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................3

1 Scope ......................................................................................................................................................5

2 Normative references ............................................................................................................................5

3 Terms and definitions ...........................................................................................................................6

4 Design and function ..............................................................................................................................8

4.1 General ....................................................................................................................................................8

4.2 Functional requirements .......................................................................................................................8

4.2.1 General ....................................................................................................................................................8

4.2.2 Design and loss of pressure .................................................................................................................8

4.2.3 Special requirements for exhaust and outlet air ducts ......................................................................8

4.2.4 Tightness ................................................................................................................................................9

4.2.5 Silencers .................................................................................................................................................9

4.2.6 Dimensioning of air ducts .....................................................................................................................9

4.2.7 Discharge of waste gases from installed gas equipment .............................................................. 10

4.2.8 Equipotential bonding and lightning protection ............................................................................. 10

4.2.9 System adjustment ............................................................................................................................. 10

4.2.10 Insulation ............................................................................................................................................. 11

4.3 Materials .............................................................................................................................................. 11

4.3.1 General ................................................................................................................................................. 11

4.3.2 Chrome-nickel steel air ducts ............................................................................................................ 11

4.3.3 Concrete air ducts .............................................................................................................................. 11

4.4 Mounting elements ............................................................................................................................. 12

5 Safety requirements ........................................................................................................................... 12

5.1 General ................................................................................................................................................. 12

Requirements for air ducts in and outside kitchens .................................................................................... 12

5.1.1 Special requirements for air ducts within the kitchen .................................................................... 13

5.1.2 Special requirements for air ducts outside the kitchen.................................................................. 13

6 Ergonomic requirements ................................................................................................................... 15

7 Hygienic requirements ....................................................................................................................... 15

7.1 General ................................................................................................................................................. 15

7.2 Supply air treatment ........................................................................................................................... 16

7.3 Cleaning ............................................................................................................................................... 16

7.3.1 Cleanout openings.............................................................................................................................. 16

7.3.2 Cleaning and cleanness during air duct installation ...................................................................... 18

7.3.3 Cleaning intervals ............................................................................................................................... 18

7.4 Fans in exhaust air ducts ................................................................................................................... 18

8 Installation and operating instructions ............................................................................................ 18

Bibliography ..................................................................................................................................................... 20

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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
Foreword

This document (prEN 16282-5:2011) 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 Enquiry.

The activities of CEN/TC 156, WG 14, cover the calculation of the air volume and the design and testing of

major components of ventilation equipment for commercial kitchens.
The structure of the standard series is as follows:

prEN 16282 Equipment for commercial kitchens – Components for ventilation in commercial kitchens

 Part 1: General requirements including calculation method
 Part 2: Kitchen ventilation hoods; Design and safety requirements
 Part 3: Kitchen ventilation ceilings; Design and safety requirements
 Part 4: Air inlets and outlets; Design and safety requirements
 Part 6: Aerosol separators; Design and safety requirements
 Part 7: Installation and use of fixed fire suppression systems
 Part 8: Installation for treatment of cooking fumes; Requirements and testing

 Part 9: Ventilation of buildings – capture and containment performance of extraction systems for

commercial kitchen – test methods
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................3

1 Scope ......................................................................................................................................................5

2 Normative references ............................................................................................................................5

3 Terms and definitions ...........................................................................................................................6

4 Design and function ..............................................................................................................................8

4.1 General ....................................................................................................................................................8

4.2 Functional requirements .......................................................................................................................8

4.2.1 General ....................................................................................................................................................8

4.2.2 Design and loss of pressure .................................................................................................................8

4.2.3 Special requirements for exhaust and outlet air ducts ......................................................................8

4.2.4 Tightness ................................................................................................................................................9

4.2.5 Silencers .................................................................................................................................................9

4.2.6 Dimensioning of air ducts .....................................................................................................................9

4.2.7 Discharge of waste gases from installed gas equipment .............................................................. 10

4.2.8 Equipotential bonding and lightning protection ............................................................................. 10

4.2.9 System adjustment ............................................................................................................................. 10

4.2.10 Insulation ............................................................................................................................................. 11

4.3 Materials .............................................................................................................................................. 11

4.3.1 General ................................................................................................................................................. 11

4.3.2 Chrome-nickel steel air ducts ............................................................................................................ 11

4.3.3 Concrete air ducts .............................................................................................................................. 11

4.4 Mounting elements ............................................................................................................................. 12

5 Safety requirements ........................................................................................................................... 12

5.1 General ................................................................................................................................................. 12

Requirements for air ducts in and outside kitchens .................................................................................... 12

5.1.1 Special requirements for air ducts within the kitchen .................................................................... 13

5.1.2 Special requirements for air ducts outside the kitchen.................................................................. 13

6 Ergonomic requirements ................................................................................................................... 15

7 Hygienic requirements ....................................................................................................................... 15

7.1 General ................................................................................................................................................. 15

7.2 Supply air treatment ........................................................................................................................... 16

7.3 Cleaning ............................................................................................................................................... 16

7.3.1 Cleanout openings.............................................................................................................................. 16

7.3.2 Cleaning and cleanness during air duct installation ...................................................................... 18

7.3.3 Cleaning intervals ............................................................................................................................... 18

7.4 Fans in exhaust air ducts ................................................................................................................... 18

8 Installation and operating instructions ............................................................................................ 18

Bibliography ..................................................................................................................................................... 20

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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
1 Scope

This standard applies to air ducts of ventilation systems in kitchens and other food processing facilities which

are, according to their type and construction, intended for commercial use. It does not apply to domestic

kitchens and the space between the kitchen ventilation ceiling and the ceiling of the building situated above it

(ceiling pressure rooms).

This standard specifies specific requirements for the design, installation and maintenance of air passages

including safety-relevant, ergonomic and sanitary features and their examination.

2 Normative references

The following referenced documents are indispensable for the application 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.
DIN 1946-2, Ventilation and air conditioning; technical health requirements

DIN 4102-4, Fire behaviour of building materials and building components; synopsis and application of

classified building materials, components and special components

DIN 4102-6, Fire Behaviour of Building Materials and Building Components; Ventilation Ducts; Definitions,

Requirements and Tests
DIN 10516, Food hygiene - Cleaning and disinfection

prEN 16282-1, Equipment for commercial kitchens – Components for ventilation in commercial kitchens – Part

1: General requirements including calculation method

prEN 16282-2, Equipment for commercial kitchens – Components for ventilation in commercial kitchens – Part

2: Kitchen ventilation hoods; Design and safety requirements

prEN 16282-3, Equipment for commercial kitchens – Components for ventilation in commercial kitchens – Part

3: Kitchen ventilation ceilings; Design and safety requirements

prEN 16282-4, Equipment for commercial kitchens – Components for ventilation in commercial kitchens – Part

4: Air inlets and outlets; Design and safety requirements

prEN 16282-6, Equipment for commercial kitchens – Components for ventilation in commercial kitchens –

Part 6: Aerosol separators; Design and safety requirements

prEN 16282-7, Equipment for commercial kitchens – Components for ventilation in commercial kitchens –

Part 7: Installation and use of fixed fire suppression systems

prEN 16282-8, Equipment for commercial kitchens – Components for ventilation in commercial kitchens – Part

8: Installation for treatment of cooking fumes – Requirements and tests

prEN 16282-9, Ventilation of buildings – capture and containment performance of extraction systems for

commercial kitchen – test methods

EN 779, Particulate air filters for general ventilation - Determination of the filtration performance

EN 933-4, Tests for geometrical properties of aggregates - Part 4: Determination of particle shape; shape

index
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)

EN 10088-2, Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion

resisting steels for general and construction purposes

EN 12237, Ventilation for buildings - Ductwork - Strength and leakage of circular sheet metal ducts

EN 12599, Ventilation for buildings - Test procedures and measuring methods for handing over installed

ventilation and air conditioning systems
Standards of the series
EN 50164, Lightning protection components (LPC)

VDI 2081 Sheet 1, Noise generation and noise reduction in ventilation and air-conditioning systems

VDI 2087, Air ducts - Operating and construction fundamentals
VDI 3803, Air-conditioning systems - Structural and technical principles

VDI 6022 Sheet 3, Hygienic standards for ventilation and air-conditioning systems in production facilities and

business enterprises
3 Terms and definitions

For the purposes of this European Standard, the following terms and definitions apply.

NOTE Some terms receive acronyms which are used in the drawings of the planning and construction phases.

3.1
Kitchen exhaust air
Air discharged out of the kitchen (line with negative pressure)
3.2
Fire spread shut-off device

Device limiting spread of fire through air ducts, preventing alone or together with other elements (e.g.

detaching devices) the spread of fire and/or fume through air ducts for a specified period of time

3.3
Outside air
Air sucked in from the outside
3.4
Tightness class

Measure for the tightness of an air duct system defined by the upper limit of the air leakage rate

NOTE The tightness of air ducts is classified in accordance with EN 12237 as class A, B or C.

3.5
Fire resistance period

Minimum time in minutes during which an element of ventilation air ducts is meeting the specified

requirements
3.6
Fire rating

Classification for an element of a ventilation duct on the basis of its fire resistance period.

NOTE The fire rating of elements of ventilation ducts is determined in accordance with DIN 4102-6 Table 1.

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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
Table 1 — of DIN 4102-6 L and K fire rating

Fire rating of pipes and pipe fittings Fire rating of shut-off devices Fire resistance period in

of air ducts against spread of fire in air ducts minutes
(fire protection flaps)
L 30 K 30
≥ 30
L 60 K 60
≥ 60
L 90 K 90
≥ 90
L 120 --
≥ 120
3.7
Outlet air
Air discharged to the outside (line with positive pressure)
3.8
Air leakage factor

Airtightness of an air duct defined as air leakage rate per air duct casing area unit.

1 2
NOTE The air leakage factor is given in m³ • s- • m- .
3.9
Air leakage rate
Leakage of an air duct which is exposed to anair pressure.
3.10
Air duct
(in case of fire protection equipment: ventilation duct)
Conduit for transporting air, used to transport airinto and out of rooms
3.11
Volumetric air flow rate
Quotient of air volume and time
3.12
Components

Elements installed in air ducts such as fans, silencers, sensors, filters, flaps an so on

3.13
Kitchens

Rooms and parts of a building where food is stored, meals are prepared, served and distributed, and dishes,

pots, pans and instruments are cleaned
3.14
Kitchen supply air
Air supplied to the kitchen
3.15
Flexible air duct

Air duct which can be, by hand and in longitudinal direction, compressed or decompressed as well as bent,

without any lasting damage to the cross sectional area
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
4 Design and function
4.1 General

Unless otherwise specified, the requirements will be checked by way of inspection and/or measurement.

4.2 Functional requirements
4.2.1 General

Air ducts are to be planned and constructed in a way to ensure low energy consumption, low leakage, low

heat losses and favourable sanitary conditions during their operation.
Any adverse hygienic effects on the food are to be excluded with due care.

The stability of the air ducts, their connection and mounting elements has to be dimensioned appropriately to

ensure that it will permanently withstand the stress and load caused by operation.

Flexible supply air ducts shall be avoided as far as possible due to their difficult cleaning.

4.2.2 Design and loss of pressure
Air ducts are to be planned in a way to ensure minimum loss of pressure.
This can be achieved by:
 longitudinal and cross-connections which are flush at the inside,

 stiffening elements that are placed on the outside to avoid high air resistance,

 air rerouting without sharp edges, inner radius at least 100 mm, junctions preferably with guiding

elements,
 no sudden changes in cross section,

 in case of changes incross section angle of inclination less 45°, smooth internal walls.

4.2.3 Special requirements for exhaust and outlet air ducts

Exhaust and outlet air ducts and their connections shall be aerosolate-proof and no visible escape of

arerosolate is allowed

Soldered/brazed or welded connections or connections with permanently elastic and aerosolate-resistant

sealing materials are deemed appropriate.
The use of flexible air ducts is not allowed.
Chinamans hat type exhaust air outlets shall not be used.
Figure 1 - Chinamans hat type
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
4.2.4 Tightness

Outside and supply air ducts with round and rectangular cross section shall meet at least the requirements of

EN 12237, tightness class A.

Exhaust and outlet air ducts with round and rectangular cross section shall meet the requirements of

EN 12237, tightness class B.
4.2.5 Silencers

Only materials which are harmless for health and which cannot become a culture medium for micro organisms

are allowed to be used for the fabrication of silencers.

In operating state, silencer materials shall not release any harmful substances, parts of fibres or gases.

Their surface shall be abrasion-proof, in exhaust and outlet air ducts smooth, water-resistant, easy to clean,

aerosolate and acid-resistant and stable

To avoid any contamination of the silencers they have to be packaged appropriately for transport and storage.

Silencers have to be dismantable with usual tools.
4.2.6 Dimensioning of air ducts
4.2.6.1 General

Flow, acoustic and heat characteristics have to comply with the requirements of VDI 2081 Sheet 1 and

VDI 2087.

TWith respect to their design and state, air ducts shall be appropriate to meet the functional specifications of

prEN 16282-1 and DIN 1946-2.
4.2.6.2 Flow velocity guide values

WFordimensioning air ducts, the flow velocity guide values as shown in table 2 have to be used, subject to the

permissible sound pressure and pressure loss.
Table 2 — Flow velocity guide values
Element of the ventilation and air-conditioning system Velocity of flow
m/s
width
a a
suction side pressure side
Extractor hood 4 6 to 8
outlet air bend deflector cap
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)
Outside and outlet air 6 to 8 (in the cross 6 to 8 (in the cross
towers section) section)
2.5 (at the fins) 4 (at the fins)
Air passage 2.5 4
Hood 4.5 6
Main air duct 4 to 6
3 to 4
Side air duct

It can be necessary (for instance to avoid condensation at the outlet, to keep contaminated flows of exhaust air intentionally away from

parts of buildings etc. or to avoid air short-circuiting) to blow out with a higher velocity (complying nevertheless with the flow noise).

4.2.6.3 Sound pressure level

For purposes of acoustic calculations for the ventilation and air-conditioning system a sound pressure A level

of 50 dB up to a maximum of 60 dB with a mean reverberation period of 1.5 sec. shall be permissible.

This value may be exceeded by 5 dB in the area for washing up crockery, pots and pans. Measurements are

carried out in the working area at a high of 1.7 m above the floor.
4.2.7 Discharge of waste gases from installed gas equipment

With respect to combined ducts for discharging waste gas from gas-fired thermal kitchen equipment and the

kitchen ventilation see DVGW requirements, DVGW worksheets G 600 and G 634.
4.2.8 Equipotential bonding and lightning protection

The relevant provisions of BGV A2, DIN VDE 0100-540 (VDE 0100 Part 540) and the standards of the series

EN 50164 (VDE 0185) have to be observed.
4.2.9 System adjustment

The system has to be adjusted in a way to ensure that the volumetric air flow rates during contractual

operation comply with the planned values.
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oSIST prEN 16282-5:2011
prEN 16282-5:2011 (E)

Volumetric air flow rates have to be measured and documented in accordance with EN 12599. Departing from

EN 12599, the overall uncertainty of measurement shall not exceed 10 %. Departure from this uncertainty of

measurement is possible in the individual case if there is evidence that there are only unfavourable measuring

points in the system which.
4.2.10 Insulation

Air ducts used for the transport of heated or cooled supply air have to be insulated against losses.

Insulation measures have to be taken for air ducts where the temperature could fall below the dew point.

4.3 Materials
4.3.1 General

The materials stated in Table 3 have to be used according to the manufacturer’s choice:

Table 3 — Materials
Component element/ Material Surface
part
Outside air ducts chrome-nickel steel
sheet steel galvanized
plastic
concrete
Supply air ducts chrome-nickel steel
sheet steel galvanized
plastic
Exhaust and outlet air ducts (1) chrome-nickel steel
sheet steel galvanized
concrete see 4.3.3
Exhaust air ducts from chrome-nickel steel
washing-up kitchens up to the plastic
point of mixing with the
exhaust air from other parts of
the kitchen and/or the outlet
into the open air

in compliance with the fire protection requirements according to the construction supervision guideline on

fire protection requirements for ventilation systems (draft pattern)
4.3.2 Chrome-nickel steel air ducts

In case of chrome-nickel steel, material No. 1.4301 pursuant to EN 10088-2 or a higher grade of chrome-

nickel steel has to be used.
4.3.3 Concrete air ducts
Concrete air ducts have to be manufactured with a smoot
...

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