This regulation is formulated to ensure the safe operation of household gas combustion appliances and to protect the safety of national property and the lives of residents. This regulation applies to the installation and acceptance of gas appliances such as water heaters, single and double burner stoves, oven heaters, etc. used in residential buildings. CJJ 12-1999 Installation and Acceptance Regulation for Household Gas Combustion Appliances CJJ12-1999 Standard download decompression password: www.bzxz.net

Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Specification for installation and acceptance of domestic gas burning appliances CJJ
12—99
1999 Beijing
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Specification for installation and acceptance of domestic gas burning appliances CJJ
12—99
Editor: China Municipal Engineering North China Design Institute Approval Department: Ministry of Construction of the People's Republic of China Implementation Date: September 1, 1999
1999 Beijing
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Notice on the Release of Industry Standard "Installation and Acceptance Procedures for Domestic Gas Burning Appliances"
Jianbiao [1999] No. 112
According to the requirements of the Ministry of Construction's "Notice on Issuing the 1995 Urban Construction and Construction Engineering Industry Standard Formulation and Revision Project Plan (Second Batch)" (Jianbiao [1995] No. 661): "Installation and Acceptance Procedures for Domestic Gas Burning Appliances" edited by China Municipal Engineering North China Design Institute has been reviewed and approved as a mandatory industry standard, numbered CJJ12-99, and will be implemented from September 1, 1999. The original ministry standard "Installation and Acceptance Procedures for Domestic Gas Instantaneous Water Heaters" CJJ12-86 is abolished at the same time. This standard is managed by China Municipal Engineering North China Design Institute, the technical unit responsible for urban gas standards of the Ministry of Construction, and is responsible for the specific interpretation of China Municipal Engineering North China Design Institute. The Standard and Quota Research Institute of the Ministry of Construction organizes China Building Industry Press to publish it. Ministry of Construction of the People's Republic of China
April 26, 1999
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Engineering Construction Standards Full Text Information System
According to the requirements of the Ministry of Construction's Document No. 661 [1995], the revision group revised the original "Installation and Acceptance Regulations for Domestic Gas Instantaneous Water Heaters" (CJJ12-86) and compiled this regulation on the basis of extensive investigation and research, careful summary of practical experience, reference to foreign advanced standards, and extensive solicitation of opinions. The main technical contents of this regulation are:
1. Gas appliance supply and exhaust;
2. Installation spacing and fire protection of gas appliances;
3. Gas appliance installation;
4. Acceptance.
The main technical contents of the revision are:
1. Expanded the scope of application of the regulations. The scope of application is expanded from domestic gas instantaneous water heaters to domestic gas combustion appliances.
2. The safety contents of gas appliances such as air supply and exhaust (ventilation), fire prevention and smoke exhaust have been enriched. 3. The relevant clauses of the regulations have been enriched and made more specific as possible. This regulation is managed by the China Municipal Engineering North China Design Institute, the technical unit responsible for urban gas standards of the Ministry of Construction, and the main editing unit is authorized to be responsible for specific interpretation. The main editing unit of this regulation is: China Municipal Engineering North China Design Institute (address: Meteorological Station Road, Hexi District, Tianjin; postal code: 300074). The participating units of this regulation are: Shenzhen Huowang Gas Appliance Company, Wuhan Gas (Group) Company, Shanghai Gas Company, Chongqing Natural Gas Company, Tianjin Figaro Electronics Co., Ltd.
The main drafters of this regulation are: Gao Yong, Zhang Weihua, Zhou Hongping, Liu Xuefeng, Gu Baozhong, Qiu Guangqing, Wang Lianchi, and Yang Xiaofeng. Engineering Construction Standard Full-text Information System
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Engineering Construction Standard Full-text Information System
General Principles·
Gas Appliance Supply and Exhaust
Installation Spacing and Fire Prevention of Gas Appliances
Gas Appliance Installation
6 Acceptance
Appendix A
Appendix B
Appendix C
Indoor Ventilation
1300000000000000 001100001000010000000000000017
Installation on corridors and balconies
Water supply installation
Terms used in this regulation
.0...4
Engineering construction standard full text information system
Engineering construction standard full text information system
1 This regulation is formulated to ensure the safe operation of household gas combustion appliances (hereinafter referred to as appliances) and protect the safety of national property and the lives of residents. 2 This regulation applies to the installation and acceptance of appliances such as water heaters, single and double stoves, ovens, heaters, etc. used in residential buildings. 1.0.3 Appliances should be selected after comprehensive consideration of factors such as the user's purpose, installation conditions, gas source, water source conditions, etc.
1.0.4 The gas burning appliances used shall comply with the provisions of the relevant national product standards and must have product certificates and installation and use instructions. After the implementation of the product production license system, the products shall be those that have obtained production licenses.
1.0.5 In addition to implementing this regulation, the installation and acceptance of household gas burning appliances shall also comply with the provisions of the relevant current national mandatory standards. Engineering Construction Standards Full Text Information System
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2.0.1 Gas Burning Appliances (Gas Burning Appliances)
Gas Burning Appliances
A general term for combustion devices that use gas as fuel. 2 Semi-sealed Natural Exhaust Type Gas Burning Appliances2.0.2
ances of natural exhaust type Gas burning appliances that require air for combustion from the room and exhaust the smoke to the outside using the natural exhaust force of the exhaust pipe.
3 Individual flue individual flue
A flue used only by one semi-enclosed natural exhaust burner. 2.0.4 Compound flue compound flue
A flue used by two semi-enclosed natural exhaust burners. 2.0.5
Common flue common flue
A flue used by multiple semi-enclosed natural exhaust burners. Common supply and exhaust duct common supply and exhaust duct 2.0.6
A channel set up in buildings and residences for multiple enclosed burners to supply and exhaust air.
2.0.7 U-shaped flue
type "U" duct
A type of common supply and exhaust duct, the air supply duct is connected to the lower end of the exhaust duct, and its upper part is in a state of wind pressure balance.
B Inverted T-shaped flue type "I" duct
A type of public air supply and exhaust duct, the air supply duct crosses the building at the lower end of the vertical exhaust duct and is set horizontally.
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Engineering Construction Standard Full Text Information System
3 Supply and exhaust of fuel appliances
3.1 General provisions
It is strictly prohibited to install non-enclosed fuel appliances in rooms without supply and exhaust conditions. 3.1.1
Semi-enclosed natural exhaust fuel appliances should not be installed in rooms with mechanical ventilation equipment such as range hoods and in connected rooms. 3.1.3 Fuel appliances installed in bathrooms must be enclosed fuel appliances. 3.1.4
Equipment.
It is strictly forbidden to install forced exhaust burners and mechanical ventilation on the natural exhaust flue. 3.1.5
Exhaust chimneys (exhaust pipes), hoods, air supply and exhaust tubes (air supply and exhaust pipes), etc. should be independent products, and their performance should comply with the provisions of the relevant standards. 3.1.6It is strictly forbidden to install baffles on exhaust chimneys and air supply and exhaust chimneys. 3.1.7Each semi-closed burner should use a separate flue. 3.1.8
A maximum of two flat closed natural exhaust burners can be connected to a composite flue, and the vertical distance between the interfaces of the two burners on the composite flue shall not be less than 0.5m; when there are difficulties and the interfaces must be installed at the same height, a smoke divider with a height of 0.5 to 0.7m should be installed on the flue.
Multiple natural exhaust burners can be installed on a public flue, but it should be ensured that they do not affect each other during smoke exhaust.
Closed natural exhaust burners should be installed on public air supply and exhaust flues. 3.1.11 It is strictly prohibited to install exhaust pipes of fuel appliances on the ventilation ducts of buildings. 3.1.12
Direct exhaust gas appliances with fan exhaust pipes and semi-enclosed natural exhaust water heaters are strictly prohibited from sharing the same exhaust pipe.
3.1.13 When installing gas appliances with different anti-electric shock protection categories, power sockets, switches and wires that meet the regulations should be used. The power sockets, switches and wires should be products that have passed safety certification.
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3.1.14 Indoor ventilation should comply with the provisions of Appendix A of this Code. 3.1.15 The distance between the smoke exhaust outlet and the openings of the surrounding buildings shall comply with the provisions of Table 3.1.15 (Figure 3.1.15-1~6). Within the projection range of the building wall at the distance specified in Table 3.1.15, there should be no openings where smoke may flow in, except for those that are more than 600mm away from the smoke exhaust outlet.
Table 3.1.15
Blowing direction
Distance between smoke exhaust outlet and openings of surrounding buildings (mm) Isolation direction
Blowing downwards
Vertical blowing 360°
Oblique blowing 360
Oblique blowing downwards
Horizontal blowing
Horizontal blowing 360°
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Blowing side
Figure 3.1.15-1 Blowing downwards
S00 with
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2 Vertical blowing 360°
Figure 3.1.15-2
600 and above
Figure 3.1.15-3 Oblique blowing 360°
150 and above
Figure 3.1.15-4
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800 and above
800 and above
Oblique blowing downward
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Engineering Construction Standard Full-text Information System
Figure 3.1.15-5
Horizontal blowing (blowing in front of the exhaust pipe installed indoors) above
Figure 3.1.15-5 (a)
150 With
IRO above
Huangfang (exit side)
Figure 3.1.15-5(6)
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80 above
Horizontal blowing one
Front ao above
Lower level
150 above
Lower 180 above
One front (outdoor installation front blowing)
Above 30
Above 150
Original above
Front version 0
Horizontal blowing one
150 above||tt ||One side (outdoor installation with side blowing)
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Side 300+
Side 300+300+
Above 300
150+m
Figure 3.1.15-6 Horizontal blowing 360°
3.2 Direct-discharge and semi-enclosed fuel-burning appliances
Side 300+
3.2.1 The air supply and exhaust of direct-discharge and semi-enclosed fuel-burning appliances shall meet the following requirements: 1. The room where the fuel-burning appliances are installed shall be equipped with an air supply port, and an exhaust port or air window shall be provided on the upper part (except when an exhaust fan is provided).
2. For appliances with a heat flow (also known as heat load) greater than 11.6kW, exhaust pipes should be installed; when installation conditions are not met, exhaust hoods with exhaust fans or exhaust fans with linkage devices can be used; or the appliances can be installed in closed compartments set up on open balconies or corridors. 3. For appliances with a heat flow less than or equal to 11.6kW, any of the following exhaust devices should be installed:
1) Install an exhaust pipe on the appliance;
2) Install an exhaust pipe with an exhaust hood on the appliance; 3) Install an exhaust fan linked to the water heater or an exhaust hood with an exhaust fan on the exterior wall.
4. When exhaust fans installed on exterior walls or exterior windows exhaust smoke to the outside, short circuit of air flow should be prevented.
2 Exhaust chimneys and exhaust pipes should be made of non-flammable, heat-resistant and corrosion-resistant materials. 3.2.2
3.2.3 The fixing of exhaust chimneys and exhaust pipes should be resistant to deadweight, wind pressure, snow accumulation and vibration.
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