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GB 50738-2011 English PDF (GB50738-2011)

GB 50738-2011 English PDF (GB50738-2011)

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GB 50738-2011: Code for construction of ventilation and air conditioning

This code is applicable to the construction and installation of ventilation and air conditioning involved in the building engineering. 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.
UDC
NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Code for Construction of Ventilation and Air
Conditioning
ISSUED ON. SEPTEMBER 16, 2011
IMPLEMENTED ON. MAY 1, 2012
Jointly Issued by Ministry of Housing and Urban-Rural Construction of the People's Republic of China
General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China
Contents
General Provisions ... 1
2 Terms ... 2
3 Basic Requirements ... 4
3 .1 Construction Technology Management... 4
3.2 Construction Quality Management ... 4
3.3 Material and Equipment Quality Management ... 5
3 .4 Safety and Environmental Protection ... 6
4 Metal Duct and Fittings Making ... 7
4.1 General Requirements ... 7
4.2 'Metal Duct Making ... ~ ... 10
4.3 Fittings Making ... 18
4.4 Quality Inspection ... 19
5 Nonmetallic or Composite Duct and Fittings Making ... 20
5 .1 General Requirements ... 20
5.2 Polyurethane/Phenolic Composite Duct and Fittings Making ... 22
5.3 Glass Fiber Composite Duct and Fittings Making ... 26
5.4 Glass Fiber/Magnesium Composite Air Duct and Fittings Making ... 29 5.5 Rigid Polyvinyl Chloride Air Duct and Fittings Making ... 35
5.6 Quality Inspection ... 38
6 Air Valve and Components Making ... 41
6.1 General Requirements ... 41
6.2 AirValve ... , ... 41
6.3 Hood and Cowl ... 42
6.4 Air Opening ... ; ... 42
6.5 Muffler, Air Duct Muffler, Mend Muffler and Muffling Static Pressure Box ... 43 6.6 Soft Coupling Duct ... 43
6.7 Filter ... 44
6.8 Heater in Air Duct ... 45
6.9 Quality Inspection ... 45
7 Making and Installation of Trestle and Hanger ... 48
7 .1 General Requirements ... 48
7 .2 Trestle and Hanger Making ... 49
7.3 Trestle and Hanger Installation ... 53
7.4 Installation of Fabricated Pipeline Hanger... 57
7.5 Quality Inspection ... 58
8 Air Duct and Components Installation ... 59
8.1 General Requirements ... 59
8.2 Metal Duct Installation ... 63
8.3 Nonmetallic or Composite Air Duct Installation ... 65
8.4 Soft Coupling Air Duct Installation ... ; ... 67
8.5 Air Opening Installation ... 68
8.6 Air Valve Installation ... 68
8.7 Installation ofMuffier, Static Pressure Box, Filter and Heater in Air Duct ... 68 8.8 Quality Inspection ... 69
9 Air Handling Equipment Installation ... 71
9 .1 General Requirements ... 71
9 .2 Air Conditioning Terminal Device Installation ... 72
9.3 Fan Installation ... 73
9.4 Air Handling Unit and Heat Recovery Device Installation ... 74
9 .5 Quality Inspection ... 7 5
10 Cold/Heat Sources and Auxiliary Equipment Installation ... 78
10.1 General Requirements ... 78
10.2 Steam Compression Refrigeration (Heat Pump) Unit Installation ... 79 10 .3 Absorption Refrigerating Unit Installation .. , ... 81
10.4 Cooling Tower Installation ... 82
10.5 Heat Exchanger Installation ... 83
10.6 Heat and Cold Storage Equipment Installation ... 83
10.7 Soft Water Device Installation ... 85
10.8 Water Pump Installation ... 85
10.9 Installation of Refrigeration and Heating Accessory Equipment... 87 10.10 Quality Inspection ... 87
11 Installation of Pipeline and Accessory of Air Conditioning Water System ... 89 11.1 General Requirements ... 89
11 .2 Pipe Connection ... 91
11.3 Piping Installation ... 95
11.4 Valve and Accessory Installation ... 97
11.5 Quality Inspection ... 99
12 Refrigeration Pipeline and Accessory Installation ... 100
12.1 General Requirements ... 100
12.2 Pipeline Installation ... 100
12.3 Valve and Accessory Installation ... 102
12.4' Quality Inspection ... 102
13 Anticorrosion and Thermal Insulation ... 104
13 .1 General Requirements ... 104
13 .2 Pipeline and Equipment Anti corrosion ... 10 5
13 .3 Pipeline of Air Conditioning Water System and Equipment Insulation ... 106 13 .4 Air Duct System of Air Conditioning and Equipment Insulation ... 108 13 .5 Quality Inspection ... 110
14 Monitoring and Control System Installation ... 112
14 .1 General Requirements ... 112
14 .2 Monitoring Instrument and Equipment Installation ... 112
14.3 Electric Wire Conduit and Wire Groove Installation and Wiring ... 114 14.4 Central Monitoring and Management System Installation ... 115
14.5 Quality Inspection ... 115
15 Inspection and Testing ... 117
15 .1 General Requirements ..." ... 117
15 .2 Air Duct Strength and Leakage Test ... 118
15.3 Air J?uct System Leakage Test... 120
15 .4 Hydrostatic Test of Water System Valve ... 121
15.5 Hydrostatic Test of Water System Pipeline ... 122
15.6 Water Filling Test of Condensate Pipeline ... 123
15.7 Flush Test of Pipeline ... 123
15.8 Full Water Test of Open Tank and Hydrostatic Test of Heat Exchanger and Airtight Container ... 124
15.9 Hydrostatic Test of Fan Coil Units ... 124
15 .10 Refrigeration System Testing ... 125
15 .11 Inspection and Testing of Electrical Equipment in Ventilation and Air Conditioning System ... 127
16 Ventilation and Air Conditioning System Operation and Commissioning ... 128 16.1 General Requirements ... 128
16.2 Single Machine Operation and Commissioning ... 129
16.3 System Operation and Commissioning under Production Load Free ... 135 Explanation of Wording in This Code ... 143
List of Quoted Standards ... 144
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. 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 Befor~ 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 B~fore construction of ventilation and air conditioning, the constru'ction 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 organinltion. 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 cen...

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