GB/T 16411-2023 (GB/T 16411-2008) PDF English
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GB/T 16411-2008: Universal test methods of gas burning appliances for domestic use---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT16411-2008
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 75.160.30
P 45
Replacing GB/T 16411-1996
Universal test methods of gas burning appliances for
domestic use
Issued on: AUGUST 07, 2008
Implemented on: APRIL 01, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Test conditions... 7
5 Test gas... 8
6 Heat flow test of burning appliances... 9
7 Air tightness test of gas piping system... 11
8 Burning condition test... 12
9 Noise test... 15
10 Temperature rise test... 16
11 Ignition device performance test... 17
12 Operation performance test of flameout protection device and anti-overheating
device... 17
13 Durability test... 19
14 Heat resistance test... 20
15 Structure test... 21
16 Material property test... 21
17 Electrical safety performance test... 24
18 Power supply disturbance test... 24
Annex A (Informative) Test instrumentation... 27
Universal test methods of gas burning appliances for
domestic use
1 Scope
This Standard specifies terms and definitions of gas burning appliances, test conditions,
test gas and test methods for general performance.
This Standard is applicable to various gas water heaters, heaters, hot water heating
stoves, cooking utensils, ovens, oven stoves and rice cookers for household use.
The gas referred to in this Standard is the gas specified in GB/T 13611.The domestic
gas appliances that use gas types other than those specified in GB/T 13611 can refer to
this Standard.
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments (excluding
corrigendum) or revisions do not apply to this Standard, however, parties who reach an
agreement based on this Standard are encouraged to study if the latest versions of these
documents are applicable. For undated references, the latest edition of the referenced
document applies.
GB/T 1690-2006, Rubber vulcanized or thermoplastic - Determination of the effect
of liquids (ISO 1817.2005, MOD)
GB/T 1740, Determination of resistance to heat and humidity of paint films
GB/T 1765, Method of producing of paint films for testing heat and humidity
resistance, salt-fog resistance and accelerated weathering
GB/T 1771, Paints and Varnishes - Determination of resistance to neutral salt spray
GB/T 2421, Environmental testing for electric and electronic products - Part 1.
General and guidance (GB/T 2421-1999, IEC 68-1.1988, IDT)
GB/T 2903, Copper/Copper-Nickel (Constantan) thermocouple wires
GB/T 3772, Platinum-10% Rhodium/Platinum thermocouple wires
GB 4706.1-2005, Household and Similar Electrical Appliances - Safety - Part 1.
General Requirements (IEC 60335-1.2004 (Ed 4.1), IDT)
GB/T 12206-2006, Testing method to determine the calorific values of town gas
GB/T 13611, Classification and basic characteristics of city gas
GB/T 17626.4, Electromagnetic compatibility - Testing and measurement techniques
- Electrical fast transient/burst immunity test (GB/T 17626.4-1998, IEC 61000-4-
4.1995, IDT)
GB/T 17626.5, Electromagnetic compatibility - Testing and measurement techniques
- Surge immunity test (GB/T 17626.5-1999, IEC 61000-4-5.1995, IDT)
GB/T 17626.11, Electromagnetic compatibility - Testing and measurement
techniques - Voltage dips, short interruptions and voltage variations immunity tests
(GB/T 17626.11-1999, IEC 61000-4-11.1994, IDT)
GB/T 17799.1-1999, Electromagnetic compatibility - Generic Standards - Immunity
for residential, commercial and light-industrial environments (IEC 61000-6-1.1997,
IDT)
CJ/T 3075.2, Laboratory of gas burning appliances - Test equipment and device
CJ/T 3085-1999, Terms of city gas
QB/T 3826, Corrosion-resistant testing method of the metal deposits and conversion
coatings for the light industrial products - Neutral salt spraying test (NSS)
QB/T 3832, Evaluation of the corrosion test results of the metal deposits for the light
industrial products
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 reference conditions
the dry gas state under the conditions that the temperature is 15°C and the absolute
pressure is 101.3kPa
3.2 standard conditions
the dry gas state under the conditions that the temperature is 0°C and the absolute
pressure is 101.3kPa
3.3 nominal heat flow rate; rated heat input
under the rated gas pressure, the heat released by the burning appliance using the
reference gas per unit time
[CJ/T 3085-1999, definition 7.2.15]
3.4 converted actual heat rate
under the test conditions, the heat flow of the burner when using the test gas is converted
to the value under the reference conditions
4 Test conditions
4.1 Laboratory conditions
When there are no special provisions for laboratory conditions for each inspection item
or standard for burning appliances in this Standard, the following provisions shall be
followed.
a) Laboratory temperature. 20℃ ± 5℃;
b) Atmospheric pressure. 86kPa~106kPa;
c) Ambient air in the laboratory. the carbon monoxide content is less than 0.002%,
and the carbon dioxide content is less than 0.2%. There shall be no airflow
affecting combustion.
NOTE 1.The humidity requirements of the laboratory during the electrical test refer to the
provisions of GB/T 2421.
NOTE 2.How to determine room temperature. In front of the burning appliance, 1m on the left and
right, fix the temperature-sensing part of the thermometer at a position roughly the same height as
the upper end of the burning appliance. Measure the temperature of the above three points. The
average value is the room temperature.
4.2 Installation and test state of burning appliances
The installation of burning appliances shall be carried out in accordance with the
inspection items of this Standard or the provisions of each standard of burning
appliances.
Use a burner with adjustable air volume. At the beginning of the test, the air regulator
shall be adjusted to an appropriate opening. And it shall not be adjusted again during
the test.
4.3 Power supply conditions
The power supply conditions for the test shall meet the following requirements.
4.3.1 Burning appliances that use commercial power
appliance.
7.2 Open the first sealing valve at the gas inlet of the burning appliance. Close the
second sealing valve at the gas inlet of the burning appliance. At the gas inlet of the
burning appliance, use 4.2kPa air to test the air tightness of the second sealing valve in
the burning appliance.
7.3 Use "0-1" gas to ignite all burning appliances. From the first sealing valve at the
gas inlet of the burning appliance to the burning appliance port, use leak detection fluid
to test the external air tightness.
8 Burning condition test
8.1 The state of the burning appliance and the condition of the test gas during the
burning condition test of the burning appliance shall comply with the provisions in
Table 2.
For burning appliances using commercial power, the voltage condition shall be 220V.
8.2 Test method for burning conditions
8.2.1 Flame pass. After igniting a fire hole of the main burning appliance, test the time
for the flame to be transmitted to all the fire holes and whether there is detonation. The
ignition method shall be carried out according to the regulations of each burning
appliance standard.
8.2.2 From the flame. Observe after the main burner is ignited for 15s.
8.2.3 Extinguishing. Observe after igniting the main burning appliance for 15s.
8.2.4 Flame uniformity. Ignite the main burning appliance. Observe after the flame has
stabilized.
8.2.5 Tempering. Observe within 30 minutes after the main burning appliance is ignited.
8.2.6 Burning noise. Ignite all burning appliances. Determine the maximum noise
according to the provisions of 9.2.1 of this Standard.
8.2.7 Flameout noise. The flameout operation is carried out after the main burning
appliance is ignited for 30 minutes. Determine flameout noise according to 9.2.2 of this
Standard. Test whether there is a popping noise.
The gas valve shall be closed quickly during the flameout operation. For a burning
appliance equipped with an automatic flameout protection device, its flameout noise
shall be measured when it is automatically turned off.
8.2.8 Carbon monoxide content in dry flue gas. After the main burning appliance is
ignited for 15 minutes, the flue gas samples shall be collected as uniformly as possible
at the exhaust site. The location and method of sampling shall be specified in
accordance with the respective standards for burning appliances.
Determine carbon monoxide and oxygen content in flue gas. Calculate according to
formula (4).
Determine carbon monoxide and carbon dioxide content in flue gas when the gas
composition can be determined in the test. Calculate according to formula (5).
Where,
COα=1 - When the excess air coefficient α is equal to 1, the value of carbon monoxide
content in the dry flue gas sample, volume fraction (%);
(CO)m - The value of carbon monoxide content in the dry flue gas sample, volume
fraction (%);
(O2)α - The value of the oxygen content in the dry air around the air supply port, volume
fraction (%);
((O2)α=20.9% in fresh air)
(O2)m - The value of oxygen content in dry flue gas, volume fraction (%);
(CO2)N - When the excess air coefficient α is equal to 1, the calculated value of the
carbon dioxide content in the dry flue gas sample, volume fraction (%);
(CO2)m - The measured value of carbon dioxide content in dry flue gas, volume fraction
(%).
NOTE 1.The use condition of formula (4) is that the oxygen content in the flue gas is less than
14%.
NOTE 2.The value of (CO2)N shall be calculated according to the theoretical flue gas volume of
the actual gas or refer to GB/T 13611.
8.2.9 Yellow flame and contact yellow flame. Ignite the main burning appliance. Check
for yellow flames. In any 1min, when the electrode or the heat exchanger is in
continuous contact with the yellow flame for more than 30s, the electrode or the heat
11 Ignition device performance test
11.1 State of burning appliances. According to the state specified by the standards of
various burning appliances.
Ignition devices using dry batteries shall adjust the power supply voltage to 70% of the
rated voltage. Ignition devices using AC power shall be regulated to 90% of the rated
voltage.
11.2 Test gas conditions. Use "3-1" and "3-3" test gases.
11.3 Test method. It shall be ignited according to the operation specified in each burning
appliance standard. Repeat the ignition 10 times according to the following procedure.
Check the number of fires and whether there is a detonation phenomenon. The operating
procedure is to carry out several preparatory ignitions in advance. Each ignition shall
be performed when the ignition device is approximately near room temperature. The
ignition operation mode and ignition speed, according to different ignition devices, are
specified as follows.
a) Single-shot piezoelectric ignition device operates once for one time. Each time
the speed is controlled within the time of 0.5s~1s.
b) Rotary ignition device takes one rotation as one turn. Its speed is the same as a).
c) For continuous discharge type or heating wire ignition devices using alternating
current or direct current power supply, the time of staying in the "ignition"
position for 2s is one time.
12 Operation performance test of flameout protection device
and anti-overheating device
12.1 Flameout protection device
12.1.1 Structure that the gas passage can be automatically closed
12.1.1.1 Valve opening time at ignition
a) Appliance state. According to the state specified by each burning appliance
standard.
b) Test gas conditions. Use "3-3" test gas.
c) Test method. Measure the time from the start of the ignition operation to the time
when the flameout protection device is in the valve-open state, which shall
comply with the time specified in the standards for various burning appliances.
12.1.1.2 Flameout valve closing time
a) State of burning appliances. According to the state of each burning appliance
standard.
b) Test gas conditions. Use "1-1" test gas.
c) Test method. Immediately after the main burner is ignited for 15 minutes, pass the
same pressure air into the ignition burner and the main burner to force the flame
out. Record the time from the flameout to the time when the flameout protection
device is turned off, which shall comply with the time specified in the standards
of each burning appliance.
12.1.1.3 Closing time for auto-ignition operation that cannot be ignited
a) Appliance state. According to the state specified by each burning appliance
standard.
b) Test gas conditions. Use air equivalent to the rated gas pressure instead of the test
gas.
c) Test method. Carry out the usual ignition operation. Measure the time it takes for
the flameout protection device to open to close the valve.
12.1.2 Structure that can automatically re-ignite
12.1.2.1 Valve opening time during re-ignition. the same as item 12.1.1.1.
12.1.2.2 Valve closing time during re-ignition. the same as item 12.1.1.2.
12.1.2.3 Valve closing time when re-ignition cannot be ignited. the same as item
12.1.1.3.
12.2 Action performance of anti-overheating device. When the anti-overheating device
operates, check that the gas passage to the burner is closed. When the temperature
returns to normal temperature, check whether the gas passage to the burner is
automatically opened.
NOTE 1."The structure of the gas passage can be automatically closed" refers to the structure that
the gas passage can be automatically closed when the ignition is not ignited or the flame is
extinguished.
NOTE 2.The "automatic re-ignition structure" refers to a structure in which the gas passage is not
closed when the ignition is not ignited or extinguished but is re-ignited immediately. After the re-
ignition is completed, the gas passage is automatically closed within a certain period of time.
Test method. According to the corresponding heat resistance level temperature
specified in each burning appliance standard, put the sample in an incubator for 24h.
Cool to room temperature after taking out. The air tightness test shall be carried out in
accordance with Chapter 7 of this Standard. Perform switch operation to check for
obstructions in use.
14.2 Ignition device
Test method. According to the corresponding heat resistance level temperature
specified in each burning appliance standard, put the sample in an incubator for 24h.
Cool to room temperature after taking out. The ignition performance test shall be carried
out in accordance with Chapter 11 of this Standard.
14.3 Pressure regulator of burning appliance
Test method. According to the corresponding heat resistance level temperature
specified in each burning appliance standard, put the regulator in an incubator for 24h.
Cool to room temperature after taking out. Test according to 13.3a) and 13.3b).
15 Structure test
15.1 Vibration
Test method. Place the burning appliance horizontally on the vibrator according to the
transport state. At a frequency of 10Hz, the full amplitude of 5mm is vibrated up and
down, left and right for 30 minutes. The air tightness test shall be carried out in
accordance with Chapter 7 of this Standard.
15.2 Tip over
Test method. Place the burning appliance horizontally on the test bench. It shall be
gradually poured to the angle specified by each burning appliance standard. Visually
check whether it is overturned; whether the parts that pose a fire hazard move or fall
off.
16 Material property test
16.1 Heat resistance
Test method. Put the specimen into the heating furnace. Slowly raise the temperature to
the temperature specified in the standard of each burning appliance within 30 minutes.
Keep 1h at this temperature. Visually inspect the material for melting.
16.2 Corrosion resistance
16.2.1Salt spray resistance test of electroplating specimen
Test method. Place the electroplating specimen in the specified saltwater spray
equipment. Spray with 5% sodium chloride solution at a temperature of 35°C ± 2°C.
The sedimentation amount of sodium chloride is 1 mL/80cm2·h～2mL/80cm2·h. The
atomizing air pressure is 70kPa~100kPa. The time is stipulated by the standard of each
burning appliance. After taking out the specimen, check the degree of corrosion. The
test method shall be carried out according to QB/T 3826.Quality assessment shall be
carried out in accordance with QB/T 3832.
16.2.2 Salt spray resistance test of painted specimen
Test method. Prepare the template according to the requirements of GB/T 1765.Place
the template in the prescribed salt spray equipment. Spray with 5% sodium chloride
solution at a temperature of 35°C ± 2°C. The sedimentation amount of sodium chloride
is 1mL/80cm2·h～2mL/80cm2·h. Time is according to the standard of each appliance.
The test method is carried out according to the provisions of GB/T 1771.Evaluate the
degree of corrosion according to GB/T 1740.
16.3 Gas resistance
16.3.1 Diaphragms, gas gaskets, washers
a) Test method. Immerse the three specimens with pre-measured mass in n-pentane
at a temperature of 5°C~25°C for 72 h. Take it out and put it in the air for 24 hours.
The mass change shall be tested according to GB/T 1690-2006.Artificial gas
burning appliances shall be tested with solution "B" specified in GB/T 1690-2006.
b) Specimen production. Diaphragms are standard with 10mm×10mm. Small sealing
gaskets and gaskets use integral immersion. For large sealing gaskets and washers,
refer to the size of the diaphragm. The thickness is not limited.
16.3.2 Slurry, grease sealing material
Test method. Weigh about 1g of sealing material and apply it to the aluminum sheet.
After being placed at room temperature for 24h, place it in the test equipment shown in
Figure 3.Open cocks A and B. Replace the internal air with butane gas. Close cock B.
Keep the gas pressure in the U-shaped pipe at 5kPa. Under the conditions of 20°C ±
1°C and 4°C ± 1°C, respectively place for 1 h. Then calculate the change rate of sealant
quality, which shall be less than the specified value in each burning appliance standard.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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