GB/T 26185-2023Electric instantaneous water heaters (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 26185-2010 "Quick Heating Water Heater". Compared with GB/T 26185-2010, except for structural adjustments and editing In addition to sexual changes, the main technical changes are as follows.

---Change the term "instant water heater" to "instant electric water heater" and "closed water heater" to "closed water heater", "Open water heater" is changed to "outlet open water heater" (see 3.1, 3.2, 3.3, 3.1, 3.2, 3.3 of the 2010 version);

---Changed the definitions of "outlet open water heater" and "constant temperature water heater" (see 3.3, 3.4, 2010 version of 3.3, 3.4);

---Deleted the terms "rated pressure", "water flow switch", "pressure switch", "rated input power" and "rated voltage" (see the 2010 version of 3.5, 3.6, 3.7, 3.8 and 3.9);

---Added the terms "adjustment time", "steady-state error", "overshoot" and "standby mode" (see 3.6, 3.7, 3.8 and 3.9);

---Added product classification (see 4.1);

---"Model naming" has been changed from normative to informative (see 4.2, Appendix A, Chapter 4 of the 2010 edition);

---Added "normal working environment" (see 5.1);

---Deleted structural requirements (see Chapter 5 of the 2010 edition);

---The limits and test methods of heating speed have been changed, and the classification of heating speed has been added (see 5.2, 6.2, 2010 version of 6.4, 7.5);

---Changed the test method for heating efficiency (see 6.3, 7.2 of the 2010 edition);

---Changed the limits of outlet water temperature stability, limits at all levels and test methods (see 5.4, 6.4, 6.2, 7.3 of the 2010 edition);

--- Added requirements and test methods for closed water temperature rise (see 5.5, 6.5);

---Added standby power requirements and test methods (see 5.6, 6.6);

---Added requirements and test methods for hazardous substance content (see 5.9, 6.9);

---Changed the description method of test instruments (see 6.1.2, 2010 version of 7.1.2);

---Changed the test method for water quality adaptability (see 6.7, 7.4 of the 2010 edition);

---Changed the test method for pulse life (see 6.8, 7.6 of the 2010 edition);

---Changed the factory inspection and type inspection, and deleted the sampling inspection (see Chapter 7, Chapter 9 of the 2010 edition);

---Deleted manufacturing and production testing (see Chapter 8 of the 2010 edition);

---The contents of the logo and packaging have been changed (see 8.1, 8.2, 10.1, 10.3 of the 2010 edition).

1 Scope

This document specifies the technical requirements and inspection rules, marking, packaging, transportation and storage of instant electric water heaters for household and similar purposes. requirements, describing the corresponding test methods.

This document applies to the design, production and testing of instant electric water heaters for household and similar purposes.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 191 Packaging, storage and transportation pictorial mark

GB/T 1019 General rules for packaging of household and similar electrical appliances

GB 4706.1 Safety of household and similar electrical appliances Part 1: General requirements

GB 4706.11 Special requirements for safety instant water heaters for household and similar electrical appliances

GB/T 5296.2 Instructions for use of consumer products Part 2: Household and similar electrical appliances

GB/T 23119 Water for performance testing of household and similar electrical appliances

GB/T 26572 Limit requirements for restricted substances in electronic and electrical products

GB/T 35758-2017 Measurement method of standby power of household appliances

GB/T 39560 (all parts) Determination of certain substances in electronic and electrical products

3 Terms and definitions

The terms and definitions defined in GB 4706.11 and the following apply to this document.