EN 16644:2014
(Main)Pumps - Rotodynamic pumps - Glandless circulators having a rated power input not exceeding 200 W for heating installations and domestic hot water installations - Noise test code (vibro-acoustics) for measuring structure- and fluid-borne noise
General Information
- Abstract
This European Standard specifies a test code for the vibro-acoustic characterization of glandless circulators with pump housing having a rated power input P1 ≤ 200W, intended to be used in heating installations, domestic hot water service installations and cooling systems, and is limited to glandless circulators with threaded connections of 11/2 inch. The test code comprises the test rig, the measurement method and the test conditions.
This European Standard applies to glandless circulators, which are manufactured after the date of issue of this European Standard.
The characterization principle is based on measuring the structure-borne and the fluid-borne power transmitted respectively by vibration and pressure fluctuations in the pipe connected to a glandless circulator.
- Status
- Published
- Publication Date
- 09-Dec-2014
- Withdrawal Date
- 29-Jun-2015
- Technical Committee
- CEN/TC 197 - Pumps
- Drafting Committee
- CEN/TC 197/SC 4/WG 1 - Circulation pumps
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 04-Mar-2026
- Completion Date
- 04-Mar-2026
Overview
EN 16644:2014 is a CEN noise test code for the vibro-acoustic characterization of small glandless circulators (rotodynamic pumps) with a rated input P1 ≤ 200 W. It covers devices intended for heating installations, domestic hot water and cooling systems and is limited to glandless circulators with threaded connections of 1½ inch. The standard defines the required test rig, measurement methods and test conditions to quantify both fluid-borne and structure-borne noise transmitted into connected piping.
Key Topics and Requirements
- Scope and applicability
- Applies to glandless circulators manufactured after the standard’s issue date.
- Focused on residential and light-commercial circulators where low noise is critical.
- Test rig specifications
- Detailed components: test object (pump), vibration and pressure measurement pipes, liquid and solid anechoic terminations, tank/pressure vessel, flow meter, regulation valve, pipe supports and frame.
- Assembly, foundation and instrumentation requirements to ensure repeatable and reproducible results.
- Measurement methods
- Fluid-borne noise: measured as pressure fluctuations in the straight pipe; expressed as fluid-borne intensity (W/m²) and fluid-borne power (W).
- Structure-borne noise: measured via vibration on the pipe wall using accelerometers; expressed as structure-borne intensity (W/m) and structure-borne power (W).
- Determination of power levels (LWfb, LWsb), energy propagation coefficients and sense of power propagation.
- Instrumentation & calibration
- Use of pressure transducers and accelerometers with defined calibration procedures.
- Requirements for measurement parameters, frequency range, signal processing and data acquisition.
- Measurement influences
- Guidance on electromagnetic interference, earth loops, vibration surroundings and initial operation time.
- Reporting
- Standardized list of information to be reported for test results to allow comparison and certification.
Applications and Who Uses It
- Pump manufacturers - design validation, product development and noise performance verification.
- Independent test laboratories - accredited testing to provide comparable noise data for product declarations.
- HVAC and building services engineers - selection of low-noise circulators for residential heating, DHW and cooling systems.
- Acoustical consultants and certification bodies - assessing compliance with local/regional noise requirements and advising on mitigation.
- Practical benefits include consistent noise data for tendering, improved occupant comfort, and clearer conformity assessment for market entry.
Related Standards
- EN 16297-1:2012 - general requirements and testing for glandless circulators (energy efficiency and EEI).
- Supersedes EN 1151-2:2006 (replaced by EN 16644).
- Other referenced standards include EN 50160 and ISO 2016 for relevant electrical and assembly conditions.
Keywords: EN 16644:2014, glandless circulators, vibro-acoustics, fluid-borne noise, structure-borne noise, noise test code, pump testing, rotodynamic pumps, heating installations.
Relations
- Effective Date
- 20-Mar-2013
- Effective Date
- 13-Nov-2010
- Effective Date
- 11-Mar-2026
- Refers
EN 50160:2022 - Voltage characteristics of electricity supplied by public electricity networks - Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
EN 16644:2014 is a standard published by the European Committee for Standardization (CEN). Its full title is "Pumps - Rotodynamic pumps - Glandless circulators having a rated power input not exceeding 200 W for heating installations and domestic hot water installations - Noise test code (vibro-acoustics) for measuring structure- and fluid-borne noise". This standard covers: This European Standard specifies a test code for the vibro-acoustic characterization of glandless circulators with pump housing having a rated power input P1 ≤ 200W, intended to be used in heating installations, domestic hot water service installations and cooling systems, and is limited to glandless circulators with threaded connections of 11/2 inch. The test code comprises the test rig, the measurement method and the test conditions. This European Standard applies to glandless circulators, which are manufactured after the date of issue of this European Standard. The characterization principle is based on measuring the structure-borne and the fluid-borne power transmitted respectively by vibration and pressure fluctuations in the pipe connected to a glandless circulator.
This European Standard specifies a test code for the vibro-acoustic characterization of glandless circulators with pump housing having a rated power input P1 ≤ 200W, intended to be used in heating installations, domestic hot water service installations and cooling systems, and is limited to glandless circulators with threaded connections of 11/2 inch. The test code comprises the test rig, the measurement method and the test conditions. This European Standard applies to glandless circulators, which are manufactured after the date of issue of this European Standard. The characterization principle is based on measuring the structure-borne and the fluid-borne power transmitted respectively by vibration and pressure fluctuations in the pipe connected to a glandless circulator.
EN 16644:2014 is classified under the following ICS (International Classification for Standards) categories: 23.080 - Pumps. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 16644:2014 has the following relationships with other standards: It is inter standard links to EN 1151-2:2006/AC:2007, EN 1151-2:2006, ISO 2016:1981, EN 50160:2022, EN ISO 12402-6:2006, EN 16297-1:2012, EN 13674-1:2011, EN 12976-1:2021, EN 12101-3:2015, EN ISO 14801:2016, EN ISO 5755:2012, EN 13674-1:2011+A1:2017, EN 12976-1:2017, EN 16955:2017, EN ISO 14801:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 16644:2014 is associated with the following European legislation: Standardization Mandates: M/469. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 16644:2014 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Pumpen - Kreiselpumpen - Umwälzpumpen in Nassläuferbauart mit elektrischer Leistungsaufnahme bis 200 W für Heizungsanlagen und Brauchwassererwärmungsanlagen für den Hausgebrauch - Geräuschprüfvorschrift (vibro-akustisch) zur Messung von Körperschall und FlüssigkeitsschallPompes - Pompes rotodynamiques - Circulateurs sans presse-étoupe de puissance absorbée n'excédant pas 200 W, destinés au chauffage central et à la distribution d'eau chaude sanitaire domestique - Code d'essai sonore (vibro-acoustique) pour le mesurage des bruits de structure et hydrauliquesPumps - Rotodynamic pumps - Glandless circulators having a rated power input not exceeding 200 W for heating installations and domestic hot water installations - Noise test code (vibro-acoustics) for measuring structure- and fluid-borne noise23.080ýUSDONHPumpsICS:Ta slovenski standard je istoveten z:EN 16644:2014SIST EN 16644:2015en,fr,de01-marec-2015SIST EN 16644:2015SLOVENSKI
STANDARDSIST EN 1151-2:2007/AC:2008SIST EN 1151-2:20071DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16644
December 2014 ICS 23.080 Supersedes EN 1151-2:2006English Version
Pumps - Rotodynamic pumps - Glandless circulators having a rated power input not exceeding 200 W for heating installations and domestic hot water installations - Noise test code (vibro-acoustics) for measuring structure- and fluid-borne noise
Pompes - Pompes rotodynamiques - Circulateurs sans presse-étoupe de puissance absorbée n'excédant pas 200 W, destinés au chauffage central et à la distribution d'eau chaude sanitaire domestique - Code d'essai acoustique (vibro-acoustique) pour le mesurage des bruits de structure et hydrauliques
Pumpen - Kreiselpumpen - Umwälzpumpen in Nassläuferbauart mit elektrischer Leistungsaufnahme bis 200 W für Heizungsanlagen und Brauchwassererwärmungsanlagen für den Hausgebrauch -Geräuschprüfvorschrift (vibro-akustisch) zur Messung von Körperschall und Flüssigkeitsschall This European Standard was approved by CEN on 2 November 2014.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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 © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16644:2014 ESIST EN 16644:2015
Acceleration due to gravity m/s2 H Head (water gauge) m P 1 Rated power input W p Pressure bar p 2max o Maximum outlet working pressure bar Q Flow rate m3/h T Temperature °C TF Fluid temperature at inlet port °C
Average velocity of water m/s
Density kg/m3 5 Test rig 5.1
General The fluid- and structure-borne powers are determined from measurement data acquired from the test rig. Components and assembly of the test-rig are described below. To get repeatable and reproducible results of the measurements, a rig, which is in accordance with or corresponds to all specifications and assembly advice given here, shall be used. 5.2
Main components of test rig The test rig is illustrated in Figure 1 and its main components are given in Table 2. SIST EN 16644:2015
Figure 1 — Test rig SIST EN
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