1.0.1 This code is formulated with view to strengthening the technology management for the construction and installation of ventilation and air conditioning, standardizing the construction technology, intensifying the control over construction and installation processes as well as guaranteeing the engineering quality.
1.0.2 This code is applicable to the construction and installation of ventilation and air conditioning involved in the building engineering.
1.0.3 During the construction and installation of ventilation and air conditioning, the requirements for engineering quality in technical engineering documents and contracting documents shall not be lower than those specified in this code.
1.0.4 The construction of ventilation and air conditioning shall not only meet the requirements stipulated in this code, but also comply with those in the current relevant ones of the nation.
2 Terms
2.0.1 Air duct
A duct, made from metal, nonmetallic sheet or other material, for ventilation.
2.0.2 Nonmetallic duct
Air duct made from such nonmetallic materials as rigid PVC and glass reinforced plastic (GRP).
2.0.3 Composite duct
Air duct made from the compositing of incombustible surface course and thermal-insulating inner plate.
2.0.4 Air channel
A channel, made from such building materials as concrete and brick, for ventilation.
2.0.5 Duct fittings
Elbow, tee, cross, reducer, special tube, guide vane and flange used in the air duct system.
2.0.6 Duct component
Air opening, valve, hood, cowl, muffler and filter involved in the air duct system.
2.0.7 Air leakage rate
Air volume discharged or leaked at certain static pressure through the main structure or interface of air duct in the air duct system.
2.0.8 Air leak check with lighting
Inspection on the seam, flange and other connections of air duct with intense light source, so as to determine the leakage position and rate of hole and gap.
2.0.9 Fixing trestle
Duct trestle where relative displacement with pipeline is non-allowed.
2.0.10 Restraining trestle
Duct trestle where no displacement occurs with the pipeline shaking.
2.0.11 Type inspection report
Report delivered based on inspection which the manufacturer entrusts a qualified inspection organization to carry out on the whole performance and applicability of approved products or packaged technologies.
2.0.12 Strength test
Test on the pressure resistance of pipeline, pressure vessel, valve and accessory within specified pressure and pressure holding time.
2.0.13 Leakage test
Test on the leakage of pipeline, pressure vessel, valve and accessory within specified pressure and pressure holding time.
3 Basic Requirements
3.1 Construction Technology Management
3.1.1 The enterprise which undertake the construction of ventilation and air conditioning shall have appropriate construction qualification. And appropriate technical standards shall be available for the construction site.
3.1.2 Where the construction enterprise undertakes the in-depth design of construction drawings of ventilation and air conditioning, relevant in-depth design documents shall be confirmed by the original design organization.
3.1.3 Before construction of ventilation and air conditioning, the development organization shall organize the design, construction and supervision organizations to make technical disclosure and joint review on the design documents and to confirm them by signing.
3.1.4 Before construction of ventilation and air conditioning, the construction organization shall prepare the organization design (scheme) for the construction of ventilation and air conditioning which shall not be implemented until passing the review of its technical principal and obtaining the approval of the supervision (development) organization. The construction organization shall make technical disclosure and provide necessary operation instruction and training for the construction personnel of ventilation and air conditioning.
3.1.5 The change of construction drawings need be approved by the original design organization. Where the change of construction drawings involves in the using and energy-saving effects of ventilation and air conditioning, such change shall be subject to review by the censorship of the original construction drawing design documents. Before any change is made, relevant procedures shall be handled and confirmation by the supervision and development organizations is required.
3.1.6 Before system check and test as well as operation and commissioning, the construction organization shall prepare appropriate technical schemes and subject them to review and approval.
3.1.7 The new technology, process, material and equipment used for or applied to ventilation and air conditioning shall be evaluated, verified and filed according to relevant requirements. Before construction, special construction technology schemes shall be formulated for new or first-applied construction technologies.
3.2 Construction Quality Management
3.2.1 Appropriate quality management system shall be established for the construction site of ventilation and air conditioning and shall cover the following content:
1 Post responsibility system;
2 Technology management responsibility system;
3 Quality management responsibility system;
4 Regular meeting system for engineering quality analysis.
1 General Provisions 2 Terms 3 Basic Requirements 3.1 Construction Technology Management 3.2 Construction Quality Management 3.3 Material and Equipment Quality Management 3.4 Safety and Environmental Protection 4 Metal Duct and Fittings Making 4.1 General Requirements 4.2 Metal Duct Making 4.3 Fittings Making 4.4 Quality Inspection 5 Nonmetallic or Composite Duct and Fittings Making 5.1 General Requirements 5.2 Polyurethane/Phenolic Composite Duct and Fittings Making 5.3 Glass Fiber Composite Duct and Fittings Making 5.4 Glass Fiber/Magnesium Composite Air Duct and Fittings Making 5.5 Rigid Polyvinyl Chloride Air Duct and Fittings Making 5.6 Quality Inspection 6 Air Valve and Components Making 6.1 General Requirements 6.2 Air Valve 6.3 Hood and Cowl 6.4 Air Opening 6.5 Muffler, Air Duct Muffler, Mend Muffler and Muffling Static Pressure Box 6.6 Soft Coupling Duct 6.7 Filter 6.8 Heater in Air Duct 6.9 Quality Inspection 7 Making and Installation of Trestle and Hanger 7.1 General Requirements 7.2 Trestle and Hanger Making 7.3 Trestle and Hanger Installation 7.4 Installation of Fabricated Pipeline Hanger 7.5 Quality Inspection 8 Air Duct and Components Installation 8.1 General Requirements 8.2 Metal Duct Installation 8.3 Nonmetallic or Composite Air Duct Installation 8.4 Soft Coupling Air Duct Installation 8.5 Air Opening Installation 8.6 Air Valve Installation 8.7 Installation of Muffler, Static Pressure Box, Filter and Heater in Air Duct 8.8 Quality Inspection 9 Air Handling Equipment Installation 9.1 General Requirements 9.2 Air Conditioning Terminal Device Installation 9.3 Fan Installation 9.4 Air Handling Unit and Heat Recovery Device Installation 9.5 Quality Inspection 10 Cold/Heat Sources and Auxiliary Equipment Installation 10.1 General Requirements 10.2 Steam Compression Refrigeration (Heat Pump) Unit Installation 10.3 Absorption Refrigerating Unit Installation 10.4 Cooling Tower Installation 10.5 Heat Exchanger Installation 10.6 Heat and Cold Storage Equipment Installation 10.7 Soft Water Device Installation 10.8 Water Pump Installation 10.9 Installation of Refrigeration and Heating Accessory Equipment 10.10 Quality Inspection 11 Installation of Pipeline and Accessory of Air Conditioning Water System 11.1 General Requirements 11.2 Pipe Connection 11.3 Piping Installation 11.4 Valve and Accessory Installation 11.5 Quality Inspection 12 Refrigeration Pipeline and Accessory Installation 12.1 General Requirements 12.2 Pipeline Installation 12.3 Valve and Accessory Installation 12.4 Quality Inspection 13 Anticorrosion and Thermal Insulation 13.1 General Requirements 13.2 Pipeline and Equipment Anticorrosion 13.3 Pipeline of Air Conditioning Water System and Equipment Insulation 13.4 Air Duct System of Air Conditioning and Equipment Insulation 13.5 Quality Inspection 14 Monitoring and Control System Installation 14.1 General Requirements 14.2 Monitoring Instrument and Equipment Installation 14.3 Electric Wire Conduit and Wire Groove Installation and Wiring 14.4 Central Monitoring and Management System Installation 14.5 Quality Inspection 15 Inspection and Testing 15.1 General Requirements 15.2 Air Duct Strength and Leakage Test 15.3 Air Duct System Leakage Test 15.4 Hydrostatic Test of Water System Valve 15.5 Hydrostatic Test of Water System Pipeline 15.6 Water Filling Test of Condensate Pipeline 15.7 Flush Test of Pipeline 15.8 Full Water Test of Open Tank and Hydrostatic Test of Heat Exchanger and Airtight Container 15.9 Hydrostatic Test of Fan Coil Units 15.10 Refrigeration System Testing 15.11 Inspection and Testing of Electrical Equipment in Ventilation and Air Conditioning System 16 Ventilation and Air Conditioning System Operation and Commissioning 16.1 General Requirements 16.2 Single Machine Operation and Commissioning 16.3 System Operation and Commissioning under Production Load Free Explanation of Wording in This Specification List of Quoted Standards
1 General Provisions
1.0.1 This code is formulated with view to strengthening the technology management for the construction and installation of ventilation and air conditioning, standardizing the construction technology, intensifying the control over construction and installation processes as well as guaranteeing the engineering quality.
1.0.2 This code is applicable to the construction and installation of ventilation and air conditioning involved in the building engineering.
1.0.3 During the construction and installation of ventilation and air conditioning, the requirements for engineering quality in technical engineering documents and contracting documents shall not be lower than those specified in this code.
1.0.4 The construction of ventilation and air conditioning shall not only meet the requirements stipulated in this code, but also comply with those in the current relevant ones of the nation.
2 Terms
2.0.1 Air duct
A duct, made from metal, nonmetallic sheet or other material, for ventilation.
2.0.2 Nonmetallic duct
Air duct made from such nonmetallic materials as rigid PVC and glass reinforced plastic (GRP).
2.0.3 Composite duct
Air duct made from the compositing of incombustible surface course and thermal-insulating inner plate.
2.0.4 Air channel
A channel, made from such building materials as concrete and brick, for ventilation.
2.0.5 Duct fittings
Elbow, tee, cross, reducer, special tube, guide vane and flange used in the air duct system.
2.0.6 Duct component
Air opening, valve, hood, cowl, muffler and filter involved in the air duct system.
2.0.7 Air leakage rate
Air volume discharged or leaked at certain static pressure through the main structure or interface of air duct in the air duct system.
2.0.8 Air leak check with lighting
Inspection on the seam, flange and other connections of air duct with intense light source, so as to determine the leakage position and rate of hole and gap.
2.0.9 Fixing trestle
Duct trestle where relative displacement with pipeline is non-allowed.
2.0.10 Restraining trestle
Duct trestle where no displacement occurs with the pipeline shaking.
2.0.11 Type inspection report
Report delivered based on inspection which the manufacturer entrusts a qualified inspection organization to carry out on the whole performance and applicability of approved products or packaged technologies.
2.0.12 Strength test
Test on the pressure resistance of pipeline, pressure vessel, valve and accessory within specified pressure and pressure holding time.
2.0.13 Leakage test
Test on the leakage of pipeline, pressure vessel, valve and accessory within specified pressure and pressure holding time.
3 Basic Requirements
3.1 Construction Technology Management
3.1.1 The enterprise which undertake the construction of ventilation and air conditioning shall have appropriate construction qualification. And appropriate technical standards shall be available for the construction site.
3.1.2 Where the construction enterprise undertakes the in-depth design of construction drawings of ventilation and air conditioning, relevant in-depth design documents shall be confirmed by the original design organization.
3.1.3 Before construction of ventilation and air conditioning, the development organization shall organize the design, construction and supervision organizations to make technical disclosure and joint review on the design documents and to confirm them by signing.
3.1.4 Before construction of ventilation and air conditioning, the construction organization shall prepare the organization design (scheme) for the construction of ventilation and air conditioning which shall not be implemented until passing the review of its technical principal and obtaining the approval of the supervision (development) organization. The construction organization shall make technical disclosure and provide necessary operation instruction and training for the construction personnel of ventilation and air conditioning.
3.1.5 The change of construction drawings need be approved by the original design organization. Where the change of construction drawings involves in the using and energy-saving effects of ventilation and air conditioning, such change shall be subject to review by the censorship of the original construction drawing design documents. Before any change is made, relevant procedures shall be handled and confirmation by the supervision and development organizations is required.
3.1.6 Before system check and test as well as operation and commissioning, the construction organization shall prepare appropriate technical schemes and subject them to review and approval.
3.1.7 The new technology, process, material and equipment used for or applied to ventilation and air conditioning shall be evaluated, verified and filed according to relevant requirements. Before construction, special construction technology schemes shall be formulated for new or first-applied construction technologies.
3.2 Construction Quality Management
3.2.1 Appropriate quality management system shall be established for the construction site of ventilation and air conditioning and shall cover the following content:
1 Post responsibility system;
2 Technology management responsibility system;
3 Quality management responsibility system;
4 Regular meeting system for engineering quality analysis.
Contents of GB 50738-2011
1 General Provisions
2 Terms
3 Basic Requirements
3.1 Construction Technology Management
3.2 Construction Quality Management
3.3 Material and Equipment Quality Management
3.4 Safety and Environmental Protection
4 Metal Duct and Fittings Making
4.1 General Requirements
4.2 Metal Duct Making
4.3 Fittings Making
4.4 Quality Inspection
5 Nonmetallic or Composite Duct and Fittings Making
5.1 General Requirements
5.2 Polyurethane/Phenolic Composite Duct and Fittings Making
5.3 Glass Fiber Composite Duct and Fittings Making
5.4 Glass Fiber/Magnesium Composite Air Duct and Fittings Making
5.5 Rigid Polyvinyl Chloride Air Duct and Fittings Making
5.6 Quality Inspection
6 Air Valve and Components Making
6.1 General Requirements
6.2 Air Valve
6.3 Hood and Cowl
6.4 Air Opening
6.5 Muffler, Air Duct Muffler, Mend Muffler and Muffling Static Pressure Box
6.6 Soft Coupling Duct
6.7 Filter
6.8 Heater in Air Duct
6.9 Quality Inspection
7 Making and Installation of Trestle and Hanger
7.1 General Requirements
7.2 Trestle and Hanger Making
7.3 Trestle and Hanger Installation
7.4 Installation of Fabricated Pipeline Hanger
7.5 Quality Inspection
8 Air Duct and Components Installation
8.1 General Requirements
8.2 Metal Duct Installation
8.3 Nonmetallic or Composite Air Duct Installation
8.4 Soft Coupling Air Duct Installation
8.5 Air Opening Installation
8.6 Air Valve Installation
8.7 Installation of Muffler, Static Pressure Box, Filter and Heater in Air Duct
8.8 Quality Inspection
9 Air Handling Equipment Installation
9.1 General Requirements
9.2 Air Conditioning Terminal Device Installation
9.3 Fan Installation
9.4 Air Handling Unit and Heat Recovery Device Installation
9.5 Quality Inspection
10 Cold/Heat Sources and Auxiliary Equipment Installation
10.1 General Requirements
10.2 Steam Compression Refrigeration (Heat Pump) Unit Installation
10.3 Absorption Refrigerating Unit Installation
10.4 Cooling Tower Installation
10.5 Heat Exchanger Installation
10.6 Heat and Cold Storage Equipment Installation
10.7 Soft Water Device Installation
10.8 Water Pump Installation
10.9 Installation of Refrigeration and Heating Accessory Equipment
10.10 Quality Inspection
11 Installation of Pipeline and Accessory of Air Conditioning Water System
11.1 General Requirements
11.2 Pipe Connection
11.3 Piping Installation
11.4 Valve and Accessory Installation
11.5 Quality Inspection
12 Refrigeration Pipeline and Accessory Installation
12.1 General Requirements
12.2 Pipeline Installation
12.3 Valve and Accessory Installation
12.4 Quality Inspection
13 Anticorrosion and Thermal Insulation
13.1 General Requirements
13.2 Pipeline and Equipment Anticorrosion
13.3 Pipeline of Air Conditioning Water System and Equipment Insulation
13.4 Air Duct System of Air Conditioning and Equipment Insulation
13.5 Quality Inspection
14 Monitoring and Control System Installation
14.1 General Requirements
14.2 Monitoring Instrument and Equipment Installation
14.3 Electric Wire Conduit and Wire Groove Installation and Wiring
14.4 Central Monitoring and Management System Installation
14.5 Quality Inspection
15 Inspection and Testing
15.1 General Requirements
15.2 Air Duct Strength and Leakage Test
15.3 Air Duct System Leakage Test
15.4 Hydrostatic Test of Water System Valve
15.5 Hydrostatic Test of Water System Pipeline
15.6 Water Filling Test of Condensate Pipeline
15.7 Flush Test of Pipeline
15.8 Full Water Test of Open Tank and Hydrostatic Test of Heat Exchanger and Airtight Container
15.9 Hydrostatic Test of Fan Coil Units
15.10 Refrigeration System Testing
15.11 Inspection and Testing of Electrical Equipment in Ventilation and Air Conditioning System
16 Ventilation and Air Conditioning System Operation and Commissioning
16.1 General Requirements
16.2 Single Machine Operation and Commissioning
16.3 System Operation and Commissioning under Production Load Free
Explanation of Wording in This Specification
List of Quoted Standards
