EN 16583:2022

Heat exchangers - Hydronic room fan coils units - Determination of the sound power level

This document is applicable to hydronic fan coil units (FCU) as factory-made single assemblies which provide the functions of cooling and/or heating but do not include the source of cooling or heating.
This document is applicable to both air free delivery and air ducted units with a maximum external static pressure due to duct resistance of 300 Pa max.
This document specifies methods for the determination of the acoustical performance of fan coil units, defining standard working condition and installation.
It is not the purpose of this document to specify the tests used for production or field testing.
NOTE   For the purpose of remaining clauses, the term “unit” is used to mean “fan coil unit”.

Wärmeübertrager - Wasser-Luft-Ventilatorkonvektoren - Bestimmung des Schallleistungspegels

Dieses Dokument ist anwendbar für werksseitig gefertigte einzelne Baueinheiten von Wasser-Luft-Ventilatorkonvektoren (en: fan coil unit, FCU), die eine Kühl- und/oder Heizfunktion bieten, jedoch keine eigene Kühl- oder Heizquelle enthalten.
Das vorliegende Dokument ist anwendbar für Geräte mit ungehinderter Luftabgabe sowie Geräte mit Luftkanalanschluss, die aufgrund des Kanalwiderstands einen maximalen statischen Außendruck von höchstens 300 Pa aufweisen.
Dieses Dokument gibt Verfahren für die Bestimmung des akustischen Verhaltens von Ventilatorkonvektoren an und definiert Norm-Betriebsbedingungen sowie den Einbau.
Die Festlegung von Produktions- oder Einsatzprüfungen ist nicht Zweck dieses Dokuments.
ANMERKUNG   In den folgenden Abschnitten steht die Benennung „Gerät“ für „Ventilatorkonvektor“.

Échangeurs thermiques - Ventilo-convecteurs à eau - Détermination du niveau de puissance acoustique

Le présent document est applicable aux ventilo-convecteurs à eau en tant qu'ensembles autonomes fabriqués en usine, assurant des fonctions de refroidissement et/ou de chauffage, mais n'intégrant pas la source de refroidissement ou de chauffage.
Le présent document est applicable aux unités à soufflage libre et les unités raccordées sur l’air conçues pour une pression statique externe due à la résistance de circuit de 300 Pa maximum.
Le présent document indique des méthodes de détermination des performances acoustiques des ventilo-convecteurs, la définition des conditions de fonctionnement standards et d'installation.
Le présent document n'a pas pour objet de spécifier les types d'essais utilisés en production ou sur site.
NOTE   Pour les besoins des articles ci-après, le terme « unité » est utilisé pour désigner un « ventilo-convecteur ».

Prenosniki toplote - Ventilatorski konvektorji voda/zrak - Ugotavljanje ravni zvočne moči

Ta evropski standard se uporablja za ventilatorske konvektorje voda/zrak (FCU) kot tovarniško izdelane enojne sestave, ki zagotavljajo funkciji ohlajanja in/ali ogrevanja, vendar ne vključujejo vira ohlajanja ali ogrevanja.
Ta standard zajema enote za prosto dovajanje zraka in enote s prezračevalnimi cevmi z največjim zunanjim statičnim tlakom zaradi tlačne odpornosti 120 Pa.
Ta evropski standard opisuje metode za določanje akustičnih lastnosti konvektorjev ter določa standardne delovne pogoje in namestitev.
Namen tega standarda ni določanje preskusov za proizvodnjo ali preskušanje na terenu.
OPOMBA:   V naslednjih točkah izraz »enota« pomeni »ventilatorski konvektor«, kot je določeno v točki 3.1 standarda FprEN 1397:2015.

General Information

• Status: Published
• Publication Date: 26-Jul-2022
• Withdrawal Date: 30-Jan-2023
• ICS: 27.060.30 - Boilers and heat exchangers
• Technical Committee: CEN/TC 113 - Heat pumps and air conditioning units
• Drafting Committee: CEN/TC 113/WG 9 - Sound rating of heat pumps, air conditioners and liquid chilling packages
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Jul-2022
• Due Date: 26-Mar-2022
• Completion Date: 27-Jul-2022
• Directive: 2016/2281 - Commission Regulation (EU) 2016/2281 of 30 November 2016 implementing Directive 2009/125/EC of the European Parliament and of the Council establishing a framework for the setting of ecodesign requirements for energy-related products, with regard to ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coil units
• Mandate: M/560 - [C(2019) 1725 final] Ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coils in support of Commission Regulation (EU) 2016/2281
• Ref Project: SIST EN 16583:2022 - Heat exchangers - Hydronic room fan coils units - Determination of the sound power level

Relations

• Replaces: EN 16583:2015 - Heat exchangers - Hydronic room fan coils units - Determination of the sound power level
• Effective Date: 16-Oct-2019
• Amended By: EN 16583:2022/FprA1 - Heat exchangers - Hydronic room fan coils units - Determination of the sound power level
• Effective Date: 19-Apr-2023

Overview

EN 16583:2022 (CEN) specifies methods for determining the sound power level of hydronic room fan coil units (FCUs). It applies to factory-made hydronic FCUs that provide heating and/or cooling (but not the heat/cooling source) and covers both free‑delivery (non‑ducted) and air‑ducted units with a maximum external static pressure of 300 Pa. The standard defines standard working conditions and installation for laboratory acoustic measurement - it is not intended as a production or field test procedure.

EN 16583:2022 supersedes EN 16583:2015 and links to EU ecodesign requirements (Commission Regulation (EU) No 2016/2281).

Key topics and requirements

• Scope and definitions
  • Terminology for hydronic FCUs, total electrical input, standard fan speed and external static pressure.
• Standard test conditions
  • Unit tested with dry coil, no water in circuit, inlet air temperature 15–25 °C, air filter installed, dampers closed, flaps fixed per manufacturer or fully open if unspecified.
  • Ducted units: standard test at 50 Pa ±1 Pa external static pressure for the declared fan speed; other speeds require defined resistance curves.
• Installation & mounting
  • Tests conducted in suitable reverberation or anechoic chambers.
  • Detailed mounting positions and clearances for non‑ducted types (e.g., floor‑mounted units placed on a hard floor at least 1 500 mm from walls).
• Acoustic measurement methods
  • References and compatibility with EN ISO acoustic standards (EN ISO 3741, 3743‑1/2, 3744, 3745, EN ISO 9614 series).
  • Procedures for diffuse field, free field and in‑duct measurement methods.
• Instrumentation & uncertainties
  • Requirements for acoustic and auxiliary instruments (electrical, pressure, rotational speed, temperature, humidity).
  • Example uncertainty limits: voltage ±0.5%, current ±0.5%, power ±1% or 1 W, temperature ±0.5 K.
• Reporting
  • Required test report content, recorded data and manufacturer information; Annex ZA addresses regulatory relationship.

Practical applications & who uses it

• Manufacturers - type testing and declaring acoustic performance on datasheets.
• Independent test laboratories - standardized procedures to measure and report FCU sound power.
• HVAC consultants and building services engineers - selecting low‑noise FCUs for sensitive environments (offices, hotels, healthcare).
• Regulatory bodies and product certifiers - verifying compliance with EU ecodesign and noise grading requirements.
• Acoustic engineers - comparing and modelling room noise from FCUs using standardized sound power data.

Related standards

• EN ISO 3741, 3743‑1/2, 3744, 3745 (sound power measurement)
• EN ISO 9614‑1/2/3 (sound intensity)
• EN ISO 80000‑8 (acoustics quantities and units)
• Commission Regulation (EU) No 2016/2281 (ecodesign)

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2022
Nadomešča:
SIST EN 16583:2015
Prenosniki toplote - Ventilatorski konvektorji voda/zrak - Ugotavljanje ravni zvočne
moči
Heat exchangers - Hydronic room fan coils units - Determination of the sound power
level
Wärmeübertrager - Wasser-Luft-Ventilatorkonvektoren - Bestimmung des
Schallleistungspegels
Échangeurs thermiques - Ventilo-convecteurs à eau - Détermination du niveau de
puissance acoustique
Ta slovenski standard je istoveten z: EN 16583:2022
ICS:
27.060.30 Grelniki vode in prenosniki Boilers and heat exchangers
toplote
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 16583
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 27.060.30 Supersedes EN 16583:2015
English Version
Heat exchangers - Hydronic room fan coils units -
Determination of the sound power level
Échangeurs thermiques - Ventilo-convecteurs à eau - Wärmeübertrager - Wasser-Luft-
Détermination du niveau de puissance acoustique Ventilatorkonvektoren - Bestimmung des
Schallleistungspegels
This European Standard was approved by CEN on 22 May 2022.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16583:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and symbols . 5
3.1 Terms and definitions . 5
3.2 Symbols . 5
4 Measuring instruments . 6
5 Operation of the unit . 7
6 Installation . 8
6.1 General . 8
6.2 Non ducted units . 8
6.2.1 General . 8
6.2.2 Floor mounted unit . 8
6.2.3 Wall mounted unit . 9
6.2.4 High wall mounted unit . 10
6.2.5 Cassette and under ceiling mounted units . 11
6.2.6 Under floor mounted . 11
6.3 Ducted units . 11
6.3.1 General . 11
6.3.2 Discharge or inlet sides . 12
6.3.3 Sound level radiated by the casing . 18
7 Acoustic measurement . 19
7.1 Frequency range . 19
7.2 Acoustic standard. 19
7.3 Diffuse field . 20
7.4 Free field. 20
7.5 In-duct measurement . 20
8 Uncertainty . 21
9 Test report . 21
9.1 General information . 21
9.2 Additional information . 21
9.3 Test results . 21
10 Data to be recorded . 22
11 Manufacturer's data . 22
Annex ZA (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No 2016/2281 [OJEU L346/1-50,
20.12.2016] aimed to be covered . 23
Bibliography . 24

European foreword
This document (EN 16583:2022) has been prepared by Technical Committee CEN/TC 113 “Heat pumps
and air conditioning units”, the secretariat of which is held by UNE.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2023, and conflicting national standards shall
be withdrawn at the latest by January 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 16583:2015.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
This document was prepared in the framework of the Commission Regulation (EU) 2016/2281 of 30
November 2016 implementing Directive 2009/125/EC of the European Parliament and of the Council
establishing a framework for the setting of ecodesign requirements for energy-related products, with
regard to ecodesign requirements for air heating products, cooling products, high temperature process
chillers and fan coil units.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the United
Kingdom.
1 Scope
This document is applicable to hydronic fan coil units (FCU) as factory-made single assemblies which
provide the functions of cooling and/or heating but do not include the source of cooling or heating.
This document is applicable to both air free delivery and air ducted units with a maximum external static
pressure due to duct resistance of 300 Pa max.
This document specifies methods for the determination of the acoustical performance of fan coil units,
defining standard working condition and installation.
It is not the purpose of this document to specify the tests used for production or field testing.
NOTE For the purpose of remaining clauses, the term “unit” is used to mean “fan coil unit”.
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.
EN ISO 3741:2010, Acoustics - Determination of sound power levels and sound energy levels of noise sources
using sound pressure - Precision methods for reverberation test rooms (ISO 3741:2010)
EN ISO 3743-1:2010, Acoustics - Determination of sound power levels and sound energy levels of noise
sources using sound pressure - Engineering methods for small movable sources in reverberant fields - Part
1: Comparison method for a hard-walled test room (ISO 3743-1:2010)
EN ISO 3743-2:2019, Acoustics - Determination of sound power levels of noise sources using sound pressure
- Engineering methods for small, movable sources in reverberant fields - Part 2: Methods for special
reverberation test rooms (ISO 3743-2:2018)
EN ISO 3744:2010, Acoustics - Determination of sound power levels and sound energy levels of noise sources
using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO
3744:2010)
1)
EN ISO 3745:2012 , Acoustics — Determination of sound power levels and sound energy levels of noise
sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
(ISO 3745:2012)
EN ISO 9614-1:2009, Acoustics - Determination of sound power levels of noise sources using sound intensity
- Part 1: Measurement at discrete points (ISO 9614-1:1993)
EN ISO 9614-2:1996, Acoustics - Determination of sound power levels of noise sources using sound intensity
- Part 2: Measurement by scanning (ISO 9614-2:1996)
EN ISO 9614-3:2009, Acoustics - Determination of sound power levels of noise sources using sound intensity
- Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)
EN ISO 80000-8:2020, Quantities and units - Part 8: Acoustics (ISO 80000-8:2020)

1)
Document impacted by A1:2017.
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 80000-8:2020 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
hydronic fan-coil unit
factory-made single assembly which provides one or more of the functions of forced circulation of air,
heating, cooling, dehumidification and filtering of air, but which does not include the source of heating or
cooling
Note 1 to entry: This device includes at least a liquid-to-air heat exchanger and a fan, and can be designed for free
or ducted intake air and/or for free or ducted delivery of supply air.
3.1.2
total electric power input
total electric power absorbed by the unit, including fan(s) and auxiliary devices but excluding any
electrical resistance heater
3.1.3
standard fan speed
fan speed setting declared by the manufacturer and used for setting the air flow rate conditions of ducted
units
Note 1 to entry: The fan speed setting can be declared by the manufacturer as a certain wiring, a switch position
or a steering voltage.
3.1.4
external static pressure
positive pressure difference measured between the air outlet and inlet sections of the unit
3.2 Symbols
For the purposes of this document, the symbols indicated in Table 1 apply.
Table 1 — Symbols, subscripts and units
Symbol/Subscript Denomination Unit
E duct end correction —
L sound power level dB
W
L sound power level measured inside the duct dB
w,in
L sound power level measured outside the duct dB
w,out
c celerity of sound m/s
f centre frequency band Hz
S area of the duct opening in the room m
Ω solid of the radiation path from the test opening —
4 Measuring instruments
The acoustic instruments shall fulfil the requirements of the acoustic standard used for the test.
Other measurements can be necessary for the tests:
— Electrical: voltage (V), current (A), total electric power input (W);
— Pressure (Pa);
−1
— Rotation speed (min ).
Measurements for the ambient conditions:
— Relative humidity (%);
— Air temperature (°C);
— Atmospheric pressure (kPa).
Table 2 gives the uncertainties allowed for these measurement values.
Table 2 — Uncertainties of measurement for indicated values
Measured quantity Unit Uncertainty of measurement
Air
— static pressure difference Pa ±3 Pa (ΔP ≤ 100 Pa)
±3 % (ΔP > 100 Pa)
Electrical quantities
— Voltage V ±0,5 %
— Current A ±0,5 %
— Power W ±1 % or minimum 1 W
−1
Rotation speed min ±1 %
Relative humidity % 5 %
Atmospheric pressure kPa 1 %
Temperature °C ±0,5 K
5 Operation of the unit
The acoustic test shall be performed without connection to water supply, without water staying in the
water circuit, with dry coil surface and an inlet air temperature from 15 °C to 25 °C.
The control of the relative humidity is not required.
If the unit includes flaps, they shall be adjusted in a fixed position according to the manufacturer
instructions. If this information is not available, their position shall correspond to the maximum
mechanical open position.
NOTE 1 This maximum mechanical open position can differ from the minimum airflow resistance.
For testing, the unit shall include an air filter but shall not include any other accessory for air inlet or
diffusion or others. Dampers for fresh air intake shall be closed.
NOTE 2 No modification such as sealing is made on the unit before testing.
For ducted units, an external static pressure difference of 50 Pa (±1 Pa) shall be applied to the unit for
the standard fan speed declared by the manufacturer.
If other speeds are tested, the same network curve resistance shall be used. See Figure 1.
If the resistance is obtained by using an auxiliary fan, the previous method cannot be applied. The
resistance curve shall be calculated from the airflow rate measured at 50 Pa. For other speeds, the
airflows rates, for which sound power shall be determined, shall be obtained from the intersections of
the pressure/flow rate curves and the resistance curve previously calculated.
Key
1 ductwork load curve
2 reference standard speed
3 other speeds
A external static pressure difference
B flow rate
Figure 1 — Setup external static pressure difference of ducted units for other speeds
6 Installation
6.1 General
Tests shall be made in suitable acoustic test chambers.
NOTE Typical types of units are presented in EN 1397:2021, Annex A.
6.2 Non ducted units
6.2.1 General
The target is the sound power level radiated by the whole unit, without distinction of inlet or discharge
sides nor casing radiation.
6.2.2 Floor mounted unit
The unit shall be installed on the hard floor at a minimum of 1 500 mm away from any wall out of any
symmetry axis.
The feet provided by the manufacturer shall be used.
For aerodynamic purpose, the space between the feet shall be closed in the rear part to simulate the wall,
with a rigid and reflective plate, with the same width of the unit and not exceeding its height, as shown in
Figure 2.
3 3
This plate shall be in chipboard or equivalent, density 600 kg/m to 700 kg/m , and thickness 19 mm to
22 mm.
Key
1 fan coil unit
2 feet
3 plate to close the space between the feet on the rear side
4 front side of the fan coil unit
5 rear side of the fan coil unit
Figure 2 — Floor mounted unit with a closing plate between the feet
6.2.3 Wall mounted unit
For low-wall mounting units, the distance to the floor given by the manufacturer shall be respected.
Without information from the manufacturer, this distance shall be 150 mm.
For aerodynamic purpose, the space between the unit and the floor shall be closed in the rear part to
simulate the wall, with a rigid and reflective plane, with the same width of the unit and not exceeding its
height, as shown in Figure 3.
The characteristics of the frame shall be such that any impact on the acoustic measurement by the frame
radiation may be avoided.
3 3
This plate shal
...