IEC 60704-2-18:2022

Overview

IEC 60704-2-18:2022 is an international standard issued by the International Electrotechnical Commission (IEC) that specifies particular requirements for testing airborne acoustical noise emissions from electric water heaters used in household and similar environments. This standard applies to single-unit electric water heaters designed for floor placement, wall mounting, under-counter installation, or similar settings, excluding certain types such as combustion water heaters, water kettles, heat pump heaters, and conventional electric storage heaters without noise-producing components.

The standard complements IEC 60704-1:2021, which provides general requirements for noise measurement in household electrical appliances, by establishing precise methods and conditions specifically tailored to electric water heaters. Its core aim is to enable consistent, accurate determination and comparison of noise levels emitted by these appliances, driving improvements in product design and ensuring reliable regulatory compliance.

Key Topics

• Scope and Applicability
  IEC 60704-2-18 focuses on electric water heaters equipped with noise-producing components such as motors and pumps, which differ from conventional storage heaters using only Joule effect elements. It excludes devices lacking noise-producing elements and other heater types like combustion or heat pump water heaters.

• Measurement Methods
  The standard endorses multiple acoustical testing methods, including ISO 3743-1, ISO 3743-2, and ISO 3744 methodologies, enabling noise measurement in various environments such as free fields or reverberation rooms.
  It details the direct intensity method suited for scenarios where typical measurement rooms are impractical.

• Instrumentation and Test Environment
  Requirements cover instrumentation calibration, positioning, and operational conditions to simulate practical use as closely as possible. Tests account for appliance placement on floors, walls, or counters to replicate real-world settings.

• Calculation and Reporting
  IEC 60704-2-18 outlines procedures to calculate sound pressure and sound power levels, standard deviations for measurements, and the necessary documentation, ensuring results are precise and comparable across different laboratories.

• Exclusions and Notes
  The noise from control elements is disregarded due to its low and sporadic nature. The standard also alerts users to patent rights considerations and emphasizes obtaining the latest edition for accuracy.

Applications

• Product Design Improvement
  Electric water heater manufacturers can apply this standard to accurately assess airborne noise emissions, facilitating technical enhancements to reduce noise pollution and improve user comfort.

• Regulatory Compliance
  The standard supports compliance with regional and international regulations, such as European energy labeling and performance requirements, by providing verified and comparable noise test data.

• Quality Assurance Testing
  Testing laboratories utilize IEC 60704-2-18 to conduct repeatable and consistent noise evaluation, underpinning product certification and quality control measures.

• Consumer Information
  Reliable noise emission data derived from this standard aid consumers in making informed purchasing decisions based on acoustic performance.

Related Standards

• IEC 60704-1:2021 – General requirements for the determination of airborne acoustical noise emitted by household electrical appliances. IEC 60704-2-18 supplements and modifies relevant clauses from this foundational document.

• IEC 60335-2-21:2012 – Safety and performance requirements for electric storage water heaters, referenced for definitions and exclusions.

• IEC 60379 (Under Development) – Methods for measuring performance of electric storage water heaters for household use.

• IEC 63159 series – Methods for measuring performance of electric instantaneous water heaters, including general requirements and multifunctional heaters.

• ISO 3743-1, ISO 3743-2, ISO 3744 – International standards providing standard methods for sound power and sound pressure level measurement relevant to appliance testing environments.

Summary

IEC 60704-2-18:2022 establishes an essential test code framework for accurately determining airborne acoustical noise levels emitted by electric water heaters in household settings. By defining standardized measurement methods, conditions, and reporting protocols, it ensures consistent noise assessment across manufacturers and testing facilities. This fosters product innovation, regulatory adherence, and enhanced consumer transparency in addressing noise emissions of electric water heating appliances.

Keywords: IEC 60704-2-18, electric water heaters, airborne acoustical noise, noise emissions, household appliance standards, noise measurement methods, IEC standards, electric heating appliances, sound power level, sound pressure level, appliance noise testing, regulatory compliance, product quality assurance.