GB/T 16411-2023 (English Version)

Standard No.: GB/T 16411-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 16411-2023
Replace: GB/T 16411-2008

Scope: This document specifies the test conditions, test gas and general test methods for the performance of household gas combustion appliances (hereinafter referred to as "appliances"). This document is applicable to various household gas water heaters, heaters, heating water boilers, gas cookers and other appliances.

Introduction

Core changes in the standard revision

Contents of the 2008 version	Changes to the 2023 version	Technical impact
Definition of standard state	Deleted	Using the benchmark state (15℃) uniformly
7 types of test gases	Added dimethyl ether/biogas	Covering new types of gas
Single-point heat load test	Weighted calculation of NOx emissions	More accurate environmental assessment

Analysis of key test methods

1. Heat load test

When using a wet gas flow meter, the following formula (1) should be used for correction:

φ_c = (1/3.6)×H_ir×q_v×[(P_amb+P_m)/(P_amb+P_g)]×√[ (101.3+P_g)/101.3 × (P_amb+P_g)/101.3 × 288.15/(273.15+t_g) × d/d_r ]

Allowable deviation: The deviation between the measured reduced heat load and the rated value should be ≤±10%

2. Air tightness test

Test type	Test pressure	Judgment standard
Internal leakage	0.6kPa or 1.5 times of working pressure	≤0.01mL/min
External leakage	15kPa	No bubble generation

Key points of combustion condition test

Flame stability:Detect flame lift under 3-1 test gas, detect flashback under 2-3 test gas
CO content:Use formula (4) to convert the value when α=1, required to be ≤0.04%
Noise test: According to the requirements of Appendix D, the measuring surface is 1m away from the equipment and the background noise correction is ≤3dB

Example of weighted calculation of NOx emissions

The weighting factors of the heating furnace at 70%/60%/40%/20% load are 0.15/0.25/0.30/0.30 respectively. The final emission value is calculated according to formula (C.6):

(NO_x)_pond = 0.15(NO_x)₇₀ + 0.25(NO_x)₆₀ + 0.30(NO_x)₄₀ + 0.30(NO_x)₂₀

Electromagnetic compatibility test requirements

Test items	Severity level	Judgment criteria
Electrostatic discharge	Contact discharge 4kV	No false operation
Voltage sag	0.5 cycle interruption	Safely locked

Implementation suggestions

The laboratory needs to be equipped with key equipment such as CO analyzer and gas calorimeter (see Appendix A)
For integrated stove products, special attention should be paid to the impact of the exhaust device on the combustion conditions
During the durability test, the pulse ignition device needs to be tested for 20,000 cycles according to 13.2.2

GB/T 16411-2023 Referenced Document

GB 4706.1 Household and similar electrical appliances-Safety Part 1:General requirements
GB/T 13611 Classification and basic characteristics of city gas
GB/T 17626.11 Electromagnetic Compatibility Testing and Measurement Techniques Part 11: Voltage Dips, Short Interruptions and Voltage Variation Immunity Tests for Equipment with Input Current Less than or Equal to 16 A per Phase
GB/T 17626.2 Electromagnetic compatibility.Testing and measurement techniques.Electrostatic discharge immunity test
GB/T 17626.4 Electromagnetic compatibility－Testing and measurement techniques－Electrical fast transient/burst immunity test
GB/T 17626.5 Electromagnetic compatibility—Testing and measurement techniques－Surge immunity test
GB/T 17626.6 Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances,induced by radio-frequency fields
GB/T 3768-2017 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane

GB/T 16411-2023 history

2023 GB/T 16411-2023 General test method for domestic gas burning appliances
2008 GB/T 16411-2008 Universal test methods of gas burning appliances for domestic use
1996 GB/T 16411-1996 Universal test methods of gas burning appliances for domestic use