Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Standardization Administration of the People’s Republic of China and the Department of Resource Conservation and Environmental Protection of the National Development and Reform Commission of the People's Republic of China.
This standard is under the jurisdiction of the Standardization Administration of the People’s Republic of China.
Minimum allowable values and grades of the energy efficiency and water efficiency for smart water closets
1 Scope
This standard specifies the minimum allowable values and grades of the energy efficiency and water efficiency, technical requirements and test methods for smart water closets.
This standard is applicable to smart water closets installed on cold water pipelines in building facilities and used at the static water supply pressure of 0.1 MPa~0.6 MPa.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6952 Sanitary wares
GB/T 9195 Classification and Terms of Building and Sanitary Ceramics
GB/T 20810 Toilet tissue paper (including toilet tissue base paper)
GB 25502 Minimum allowable values of water efficiency and water efficiency grades for water closets
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 9195 and the following apply.
3.1
smart water closets
water closets with one or more basic smart functions including at least warm water cleaning function completed under the control of electromechanical system and/or program, including integral smart water closets and split smart water closets
Note: The warm water cleaning function includes the self-cleaning function of the nozzle.
3.2
integral smart water closets
smart water closets for which the smart electromechanical control system cannot be used separately with the water closets
3.3
split smart water closets
cover board of smart water closets that can be used after combination of the smart electromechanical control system and the water closets which can also be separated
3.4
basic function of smart water closets
most basic movements or abilities of the smart water closets, including warm water cleaning function (e.g. buttock cleaning and the women's cleaning) and seat heating function
3.5
auxiliary function of smart water closets
functions added to improve the health and hygiene performances of smart water closets, including water temperature adjustment, seat temperature adjustment, mobile cleaning, warm air drying, air temperature adjustment, nozzle adjustment and automatic flushing functions
3.6
extended function of smart water closets
functions added to improve the comfort of smart water closets, including but not limited to the following functions: automatic opening and closing of the seat and cover, deodorization, massage and cleaning, flushing force adjustment, remote control, lighting, multimedia, memory, APP, WIFI, disinfection, etc.
3.7
energy consumption per unit cycle of smart water closets
energy consumption per test cycle (1.5 h) of smart water closets measured and calculated according to the test method and calculation equation specified in the standard
3.8
average water consumption for flushing of smart water closets
average water consumption for flushing function measured and calculated according to the test method and calculation equation specified in the standard
3.9
average water consumption for cleaning of smart water closets
average water consumption of buttock cleaning and women’s cleaning functions (including self-cleaning of nozzle) measured and calculated according to the test method and calculation equation specified in the standard
3.10
minimum allowable values of the energy efficiency and water efficiency for smart water closets
maximum energy consumption per unit cycle, maximum average water consumption for flushing and maximum average water consumption for cleaning allowed for smart water closets under the test conditions specified in the standard
4 Grades of the energy efficiency and water efficiency for smart water closets
The energy efficiency and water efficiency for smart water closets are classified into 3 grades, with Grade 3 representing the least efficiency. The energy consumption per unit cycle, average water consumption for cleaning and that for flushing of smart water closets of various grades shall meet those specified in Table 1.
Table 1 Grade indexes of the energy efficiency and water efficiency for smart water closets
Grades of the energy efficiency and water efficiency for smart water closets Grade 1 Grade 2 Grade 3
Grade indexes of energy efficiency Energy consumption per unit cycle/(kW·h) With seat heating function ≤0.030 ≤0.040 ≤0.060
Without seat heating function ≤0.010 ≤0.020 ≤0.030
Grade indexes of water efficiency Average water consumption for cleaning of smart water closets/L ≤0.30 ≤0.50 ≤0.70
* Average water consumption for flushing of smart water closets/L meet the requirements of Grade 1 indexes in GB 25502 meet the requirements of Grade 2 indexes in GB 25502 meet the requirements of Grade 3 indexes in GB 25502
* Water consumption for full flushing of dual-flush smart water closets/L
Note 1: "*" is applicable to integral smart water closets.
Note 2: For dual-flush smart water closets with each grade of water efficiency, the average water consumption for half flushing shall not be greater than 70% of the maximum allowable value of the water consumption for full flushing.
5 Technical requirements
5.1 Basic requirements
Under the test conditions specified in the standard, the smart water closets shall meet the relevant requirements of the standard prescribed expressly.
5.2 Cleaning function
5.2.1 Water temperature characteristics
The water temperature characteristics shall be tested according to Sub-clause A.5.2, and the maximum temperature of water for cleaning shall be controlled at 35℃~42℃.
5.2.2 Self-cleaning of nozzle
The self-cleaning of nozzle shall be tested according to Sub-clause A.5.3, and the chalk line at 1/4 of the nozzle shall be cleaned up without any residue.
5.3 Flushing function
5.3.1 Washing function
It shall meet the requirements of washing function in GB/T 6952.
5.3.2 Water seal recovery
It shall meet the requirements of water seal recovery in GB/T 6952.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Grades of the energy efficiency and water efficiency for smart water closets
5 Technical requirements
6 Test methods
Annex A (Normative) Test methods
Annex B (Normative) Standard water supply system
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Standardization Administration of the People’s Republic of China and the Department of Resource Conservation and Environmental Protection of the National Development and Reform Commission of the People's Republic of China.
This standard is under the jurisdiction of the Standardization Administration of the People’s Republic of China.
Minimum allowable values and grades of the energy efficiency and water efficiency for smart water closets
1 Scope
This standard specifies the minimum allowable values and grades of the energy efficiency and water efficiency, technical requirements and test methods for smart water closets.
This standard is applicable to smart water closets installed on cold water pipelines in building facilities and used at the static water supply pressure of 0.1 MPa~0.6 MPa.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6952 Sanitary wares
GB/T 9195 Classification and Terms of Building and Sanitary Ceramics
GB/T 20810 Toilet tissue paper (including toilet tissue base paper)
GB 25502 Minimum allowable values of water efficiency and water efficiency grades for water closets
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 9195 and the following apply.
3.1
smart water closets
water closets with one or more basic smart functions including at least warm water cleaning function completed under the control of electromechanical system and/or program, including integral smart water closets and split smart water closets
Note: The warm water cleaning function includes the self-cleaning function of the nozzle.
3.2
integral smart water closets
smart water closets for which the smart electromechanical control system cannot be used separately with the water closets
3.3
split smart water closets
cover board of smart water closets that can be used after combination of the smart electromechanical control system and the water closets which can also be separated
3.4
basic function of smart water closets
most basic movements or abilities of the smart water closets, including warm water cleaning function (e.g. buttock cleaning and the women's cleaning) and seat heating function
3.5
auxiliary function of smart water closets
functions added to improve the health and hygiene performances of smart water closets, including water temperature adjustment, seat temperature adjustment, mobile cleaning, warm air drying, air temperature adjustment, nozzle adjustment and automatic flushing functions
3.6
extended function of smart water closets
functions added to improve the comfort of smart water closets, including but not limited to the following functions: automatic opening and closing of the seat and cover, deodorization, massage and cleaning, flushing force adjustment, remote control, lighting, multimedia, memory, APP, WIFI, disinfection, etc.
3.7
energy consumption per unit cycle of smart water closets
energy consumption per test cycle (1.5 h) of smart water closets measured and calculated according to the test method and calculation equation specified in the standard
3.8
average water consumption for flushing of smart water closets
average water consumption for flushing function measured and calculated according to the test method and calculation equation specified in the standard
3.9
average water consumption for cleaning of smart water closets
average water consumption of buttock cleaning and women’s cleaning functions (including self-cleaning of nozzle) measured and calculated according to the test method and calculation equation specified in the standard
3.10
minimum allowable values of the energy efficiency and water efficiency for smart water closets
maximum energy consumption per unit cycle, maximum average water consumption for flushing and maximum average water consumption for cleaning allowed for smart water closets under the test conditions specified in the standard
4 Grades of the energy efficiency and water efficiency for smart water closets
The energy efficiency and water efficiency for smart water closets are classified into 3 grades, with Grade 3 representing the least efficiency. The energy consumption per unit cycle, average water consumption for cleaning and that for flushing of smart water closets of various grades shall meet those specified in Table 1.
Table 1 Grade indexes of the energy efficiency and water efficiency for smart water closets
Grades of the energy efficiency and water efficiency for smart water closets Grade 1 Grade 2 Grade 3
Grade indexes of energy efficiency Energy consumption per unit cycle/(kW·h) With seat heating function ≤0.030 ≤0.040 ≤0.060
Without seat heating function ≤0.010 ≤0.020 ≤0.030
Grade indexes of water efficiency Average water consumption for cleaning of smart water closets/L ≤0.30 ≤0.50 ≤0.70
* Average water consumption for flushing of smart water closets/L meet the requirements of Grade 1 indexes in GB 25502 meet the requirements of Grade 2 indexes in GB 25502 meet the requirements of Grade 3 indexes in GB 25502
* Water consumption for full flushing of dual-flush smart water closets/L
Note 1: "*" is applicable to integral smart water closets.
Note 2: For dual-flush smart water closets with each grade of water efficiency, the average water consumption for half flushing shall not be greater than 70% of the maximum allowable value of the water consumption for full flushing.
5 Technical requirements
5.1 Basic requirements
Under the test conditions specified in the standard, the smart water closets shall meet the relevant requirements of the standard prescribed expressly.
5.2 Cleaning function
5.2.1 Water temperature characteristics
The water temperature characteristics shall be tested according to Sub-clause A.5.2, and the maximum temperature of water for cleaning shall be controlled at 35℃~42℃.
5.2.2 Self-cleaning of nozzle
The self-cleaning of nozzle shall be tested according to Sub-clause A.5.3, and the chalk line at 1/4 of the nozzle shall be cleaned up without any residue.
5.3 Flushing function
5.3.1 Washing function
It shall meet the requirements of washing function in GB/T 6952.
5.3.2 Water seal recovery
It shall meet the requirements of water seal recovery in GB/T 6952.
Contents of GB 38448-2019
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Grades of the energy efficiency and water efficiency for smart water closets
5 Technical requirements
6 Test methods
Annex A (Normative) Test methods
Annex B (Normative) Standard water supply system
