GB 50243-1997 Code for Construction and Acceptance of Ventilation and Air Conditioning Engineering GB50243-97 GB50243-1997 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB50243-97
Code for construction and acceptance of ventilation and air conditioning works
1997-10-20 Issued
State Bureau of Technical Supervision
Ministry of Construction of the People's Republic of China
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1998-05-01
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code for construction and acceptance of ventilation and air conditioning works conditioningworksGB
50243-97
Editing department: Shanghai Construction Committee
Approving department: Ministry of Construction of the People's Republic of China Effective date: May 1, 1998
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Notice on the Release of the National Standard "Construction and Acceptance Specification for Ventilation and Air-conditioning Engineering"bZxz.net
Construction Standard [1997] No. 313
According to the requirements of the State Planning Commission's Document No. [1992] 490, the "Construction and Acceptance Specification for Ventilation and Air-conditioning Engineering" revised jointly by the Shanghai Construction Committee and relevant departments has been reviewed by relevant departments. The "Construction and Acceptance Specification for Ventilation and Air-conditioning Engineering" GB50243-97 is now approved as a mandatory national standard, which will be implemented on May 1, 1998, and the original "Construction and Acceptance Specification for Ventilation and Air-conditioning Engineering" GBJ243-82 will be abolished at the same time. This standard is managed by the Shanghai Construction Committee, and the specific interpretation and other work is the responsibility of Shanghai Construction Engineering (Group) Corporation Shanghai Industrial Equipment Installation Company. The publication and distribution is organized by the Standard Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
October 20, 1997
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3 Metal Duct Manufacturing
General Provisions
3.2 Steel Duct
3.3 Stainless Steel Duct
3.4 ​​Aluminum Duct
4 Non-metal Ventilation Duct Manufacturing
4.1 Rigid Polyvinyl Chloride Duct
Glass fiber reinforced plastic air duct
Composite material air duct
Brick and concrete air duct
Component production
General air valve
5.3 Special air valve
Other components
Electricity
6 Air handling equipment and dust collector production
6.1 Water spray section of air handling room
6.2 Air filter
6.3 Muffler
6.4 Dust collector
Special power central power
7 Air duct and component installation
7.1 General provisions
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7.2 Air duct installation
7.3 Special air duct installation||tt| |7.4 Component installation·
8 Ventilation and air conditioning equipment installation
General provisions
Ventilator
Air filter installation
Muffler installation
Air conditioning unit
Unitary air conditioning unit
Fan coil unit
Dust collector installation
Clean equipment installation
Other equipment
Air conditioning and refrigeration system installation·
General provisions|| tt||Equipment installation
Pipeline installation
Refrigeration system test and trial operation
Painting and anti-corrosion
Insulation:
General provisions..
Air ducts, components and equipment
11.3Refrigeration piping and ancillary equipment
12System trial operation and debugging.
General provisions
12.2 Single machine trial operation.
12.3System trial operation and debugging
12.4 Determination and adjustment of comprehensive effectiveness…
13 Project acceptance·
13.1 General provisions
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1..3 Handover acceptance
Appendix A
Appendix B
Appendix C
Appendix D
Light leakage detection and air leakage test
Air purification system test method
86666689668008600088688668066606886e..
Project acceptance record form
Terms used in this specification Explanation
Additional Explanation
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1 General
1.0.1 This specification is formulated to unify the construction, acceptance standards and testing methods of ventilation and air-conditioning engineering, to achieve advanced technology, economic rationality, safety and practicality, and to ensure the quality of the engineering. 1.0.2 This specification applies to the construction and acceptance of ventilation and air-conditioning engineering for industrial and civil buildings.
The main materials, equipment, finished products and semi-finished products used in ventilation and air-conditioning engineering should be products produced according to standards and have factory inspection certificates. Non-standard products processed for engineering should also have quality inspection certificates and should comply with the provisions of relevant national mandatory standards.
1.0.4 Ventilation and air-conditioning engineering must be constructed according to the approved design drawings. Modifications to the design should be accompanied by a change notice or visa from the design unit. 1.0.5 Parts not included in this specification and with special requirements shall be implemented in accordance with the current relevant technical standards or design requirements.
1.0.6 Ventilation and air-conditioning engineering shall be carried out in accordance with the prescribed procedures and cooperate with civil engineering and other professional works; after the completion of civil engineering related to ventilation and air-conditioning systems, it shall be jointly inspected by the construction or general contracting, supervision, design and construction units. The organization of the joint inspection should be the responsibility of the construction, supervision or general contracting unit. 1.0.7 In addition to complying with this specification, the construction, commissioning, automatic control adjustment and acceptance of ventilation and air-conditioning engineering shall also comply with the provisions of the current relevant national standards and specifications. Engineering Construction Standards Full-text Information System
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2 Terminology
2.0.1 Ventilation works ventilation works air supply, exhaust, dust removal and smoke exhaust system engineering are collectively referred to as ventilation works. 2.0.2 Air conditioning works air conditioning and air purification system engineering are collectively referred to as air conditioning works. 2.0.3 Seam
The edge of a metal sheet is bent into a certain shape for fixed connection. 2.0.4 Duct without flange connection Ductmateconnection The general term for non-steel flange connection of metal ducts. 2.0.5 Ductleakagerate
In ventilation and air-conditioning systems, the amount of air that penetrates or leaks through the duct body structure and its interface per unit time under a certain static pressure. 2.0.6 Ductsystemleakagerate The ratio of air infiltration or leakage to the rated air volume under working pressure of air conditioning equipment, dust collector or duct system.
2.0.7 Plastic ductheatbentandfixed The process of locally heating and bending rigid polyvinyl chloride sheets. 2.0.8 Air purification system aircleaningsystem Air purification treatment system used in clean rooms. 2.0.9 Duct leak check with lighting A method of using a strong light source to conduct a light inspection on the seams, joints, flanges and other joints of the duct to determine the location and number of holes, gaps and other leakages. 2.0.10 Sound-attenuating louver Multi-leaf vents with sound-attenuating treatment on the vent frame and blades. 2.0.11 Self-contained air conditioning unit Engineering Construction Standard Full Text Information System
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Air conditioning equipment with independent refrigeration capacity. 2.0.12 Packaged refrigerating unit Refrigerating machine, condenser, evaporator and various auxiliary equipment are assembled in the same box to form an integral installation type.
2.0.13 Assembling refrigeration equipment
assemblingrefrigerationequipment Refrigerating machine, condenser, evaporator and various auxiliary equipment are concentrated and partially installed separately, including a type with a separate refrigerator, a type with a separate evaporator (direct expansion) and a type with a separate condenser. 2.0.14 Damp-proof course A closed film or coating that prevents water vapor from invading the insulation layer. 2.0.15 Protective covering
protectivecovering
The surface layer that protects the insulation layer and moisture-proof layer. Engineering Construction Standard Full-text Information System
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3 Metal Duct Production
3.1 General Provisions
3.1.1 The specifications of ventilation ducts should be selected according to the provisions of Tables 3.1.1-1 and 3.1.1-2. The basic series should be used for circular ducts, and the ratio of the long side to the short side of the rectangular duct should not be greater than 4:1. The duct should be the outer diameter or the outer side length; the brick and concrete duct should be the inner diameter or the inner side length.
Basic series
Table 3.1.1-1 Specifications of circular air ducts (mm)
Auxiliary series
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Basic series
Auxiliary series
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Basic series
Continued Table 3.1.1-1
Auxiliary series
Table 3.1.1-2
Basic series
Specifications of rectangular air ducts (mm)
Auxiliary series
The bending radius (measured by the center line) and the minimum number of sections of circular elbows shall comply with the provisions of Table 3.1.2
3.1.2.
Bend pipe diameter
80~220
240~450
480~800
850~1400
1500~2000
Bending radius
Bending radius and minimum number of sections of circular bend pipe
Bending angle and minimum number of sections
Note: The bending radius of circular bend pipe in dust removal system shall be greater than or equal to 2 times of the bend pipe diameter. Engineering Construction Standard Full-text Information System
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3.1.3 For the bend pipe of rectangular air duct, inner arc or inner oblique rectangular bend pipe can be adopted (Figure 3.1.3). When the side length A is greater than or equal to 500mm, a guide plate shall be provided. Figure 3.1.3 Rectangular elbow
A——Side length of rectangular elbow
3.1.4 For the tee or cross of circular air duct, the angle between the branch pipe and the main pipe should be 15~60°, and the manufacturing deviation of the angle should be less than 3°. 3.1.5 The tee or cross of rectangular air duct can be forked or separated (Figure 3.1.5).
3.1.6 When making metal air duct, the splicing bite of the plate and the closed bite of the circular air duct can adopt a single bite; the four-corner combination of rectangular air duct or accessories can adopt corner bite, combined corner bite, and snap-on bite; the combination of circular elbows can adopt vertical bite (Figure 3.1.6). 3.1.7 The connection between the various sections of the air duct should be detachable, and the length of the section should be 1.8~4m.
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