GB 17790-1999 Specification for installation of room air conditioners
Some standard content:
GB17790—1999
In recent years, the room air conditioner industry has developed rapidly, with an annual output of nearly 10 million units, and production capacity is still developing. Since there are still some processes that need to be completed when the room air conditioner is installed for the user after leaving the factory, whether the product performance and safety can be guaranteed depends on the quality of the installation work in a certain sense. Therefore, installation becomes an important link to ensure the normal operation of the room air conditioner. However, since there is no scientific and unified room air conditioner installation standard in China, although the room air conditioner has qualified quality when it leaves the factory, the installation work has no legal basis and the operation is not standardized, which leads to repeated complaints from users to manufacturers and sales units.
In order to adapt to the needs of industry development, standardize the market, protect the interests of consumers and manufacturers, this specification has been formulated with reference to international advanced standards and considering national conditions. This specification makes corresponding provisions for qualified installation work in terms of scope, reference standards, definitions, air conditioners and their installation accessories, air conditioner installation requirements, installation operation procedures, inspection methods, and training and qualification assessment of installers. Since the understanding of things is always in a continuous deepening process, this installation specification will be revised to make it more perfect. This standard is proposed by the State Bureau of Light Industry.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Household Appliances. The main drafting units of this standard are: China Household Electrical Appliance Research Institute, Zhuhai Gree Electric Appliances Co., Ltd., Jiangsu Chunlan Electric Appliance Co., Ltd., Haier Group Corporation, Guangdong Shunde Midea Air Conditioner Manufacturing Co., Ltd., Guangdong Kelon Air Conditioner Co., Ltd., Shenzhen Whirlpool Blue Wave Air Conditioning Industry Co., Ltd., Jinan New Era Electronics Co., Ltd. The main drafters of this standard are: Jiang Junming, Ma Dejun, Chen Jianmin, Zhang Hualin, Zhu Jixian, Wen Feng, Liu Qingsheng, Fu Kuiwu, Jiang Zhen. This standard is entrusted to the National Technical Committee for Standardization of Household Appliances for interpretation. 530
1 Scope
National Standard of the People's Republic of China
Installation rule for room air-conditioner
Iastallation rule for room air-conditionerGB17790-1999
This standard specifies the requirements for personal and property safety, surrounding environment, realization of the intended functions of room air-conditioners, and qualification confirmation of installers involved in the installation of room air-conditioners after leaving the factory. This standard applies to the installation of room air-conditioners for household and similar purposes with air-cooled condensers, industrial difluorochloromethane (R22) as refrigerant, and rated cooling capacity below 14,000W. Note
1 For room air-conditioners using other refrigerants, the applicable clauses of this standard may be referred to and additional requirements may be required. 2 The reinstallation of room air-conditioners after use (such as relocation installation, maintenance disassembly, etc.) may refer to this specification. 2 Reference Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T700-1988 Carbon structural steel (negDIN630:1987) GB1002-1996 Single-phase plugs and sockets for household and similar purposes - Types, basic parameters and dimensions GB2099.1-1996 Solenoid sockets for household and similar purposes - Part 1 - General requirements (eqvIEC884-1:1994) GB4706.32-1996 Safety of household and similar electrical appliances - Particular requirements for heat pumps, air conditioners and dehumidifiers (idt IEC 335-2-40:1992)
Instructions for use of consumer products Instructions for use of household and similar electrical appliances GB 5296.2-1997
GB/T 7373--1987 Difluoro-1-fluoromethane (F22) for industrial use (neq JIS K1517: 1982) GB/T 7725--1996 Room air conditioner (neq ISO 5151: 1.994) GB 14093.1-1993 Environmental technical requirements for mechanical products for hot and humid environments GB 50169-1992 Construction and acceptance specifications for grounding devices for electrical installation projects 3 Definitions
This standard adopts the following definitions.
3.1 Room air conditioner room air conditioner A device that directly provides processed air to a confined space, room or area. It mainly includes a refrigeration system for refrigeration and dehumidification, as well as air circulation and purification devices, and may also include heating and ventilation devices (which can be assembled into a box shell or designed to be used together as a component system, hereinafter referred to as air conditioner). 3.2 Air conditioner installation room air conditioner installation Professional installers, based on the user's specific environmental conditions, fix the air conditioner in place and correctly combine, connect and debug it to achieve the complete activities of its intended use function.
Approved by the State Administration of Quality and Technical Supervision on July 22, 1999, and implemented on March 1, 2000
3.3 Installation surface installation surface GB 17790—1999
The bearing surface that supports and fixes the air conditioner, mostly refers to the wall, ground and top surface of the building. 3.4 Installation rack installation rack
A component that can reliably fix the air conditioner on the installation surface. 3.5 Qualified installation person A person who has certain basic knowledge, technical experience and a qualification certificate for air conditioner installation and is authorized to complete the air conditioner installation task in a safe manner.
3.6 User user
Individuals, families or social groups who use air conditioner products and receive air conditioner installation services. 3.7 Service life of installation The period that a qualified air conditioner should reach through correct installation and normal use by the user, generally in "years". 4 Requirements for air conditioners and installation accessories
4.1 Air conditioners
The air conditioners to be installed shall have installation structures suitable for their intended use and type, and shall be accompanied by at least the manufacturer's product certificate, warranty card and safety certification mark.
4.2 Installation accessories
Accessories used for air conditioner installation shall comply with the provisions of the relevant standards or the requirements of the installation instructions. 4.2.1 Piping
4.2.1.1 Connecting pipe
The connecting pipe connecting the indoor unit and the outdoor unit of the split air conditioner shall have a certain strength and toughness and shall comply with the requirements of the installation instructions.
4.2.1.2 Connecting parts
The connection of the connecting pipe shall be made by a conical pipe joint with a steel nut and a forged copper nut or other equivalent connection methods. The connecting pipe and connecting parts shall be provided by the manufacturer as air conditioner accessories. If the seller acts as an accessory provider, it must comply with the manufacturer's requirements.
4.2.1.3 Pipe sheath
The steam and liquid pipelines of the connecting pipe should be well insulated. According to the requirements of the product manual, select independent foam insulation materials and sheaths of appropriate thickness, and the pipe sheaths and electrical wiring should be correctly and reasonably covered. 4.2.2 Electrical wiring
The power cord and electrical control line of the air conditioner and their connection should comply with the relevant requirements of GB4706.32. The wiring and terminal of the interconnecting cable and control cable should have clear and corresponding markings! The power cord and control line should not cross or entangle with each other. 4.2.3 Electronic controller
The electronic controller of the air conditioner should comply with the requirements of the corresponding national standards, industry standards and product manuals to ensure the good use of the air conditioner.
4.3 Mounting parts
The selection and production of the parts and (or) components used for the installation of the air conditioner should ensure the safe and normal operation of the air conditioner and comply with the requirements of the corresponding national standards.
For installation parts used in hot and humid areas or special areas, if necessary, the test items should be selected according to the environmental factors and Table 1 in GB14093.1--1993 and the relevant tests should be passed. 4.3.1 Mounting frame
1) It can be marked with color, characters or structure. 532
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The design and processing of the mounting frame should fully consider the bearing strength, corrosion resistance and convenience of installation and maintenance of the materials and structures. Steel components should be firmly welded or connected and must be treated with rust prevention. The material of the steel mounting frame should be selected from structural steel with performance requirements not lower than Q235A in GB/T700-1988 and should comply with GB4706.32--1996, Chapter 31. If other materials are used, they should have sufficient strength and corrosion resistance.
4.3.2 Fasteners
When installing the air conditioner, the fixing or connecting bolts used to bear and withstand shear force should comply with the requirements of the relevant national standards and installation instructions; the expansion bolts (a special threaded connection piece consisting of countersunk bolts, expansion tubes, washers, nuts, etc.) used for installation and fixing on the installation surface such as concrete should determine the installation hole diameter and depth according to the hardness of the installation surface material, and select the appropriate expansion bolt specifications. The fixing points on the installation surface of the air conditioner should not be less than the provisions of the installation instructions and measures should be taken to prevent loosening to ensure stable, firm and reliable installation. 4.4 Instructions
In addition to complying with 7.12 of GB4706.32-1996 and 8.2.3.2 of GB/T7725-1996 and GB5296.2, the product instructions of the air conditioner should also include relevant contents such as air conditioner installation and trial operation. The installation instructions can also be compiled into a separate book. 5 Requirements for air conditioner installation
The installation of air conditioners must be completed by professional installers who have received special training. The production of its installation accessories and the installation of air conditioners shall comply with the requirements of this specification and the general principles of safety technical regulations, and shall comply with the laws, regulations, standards and product installation instructions promulgated by the state and local governments regarding electricity, construction, environmental protection, etc. 5.1 Use space
The cooling (heating) capacity of the air conditioner should be suitable for the size of the room and the use environment. 5.2 Noise and vibration
The noise of the air conditioner should comply with the requirements of GB/T7725. The installed air conditioner shall not produce abnormal noise and vibration due to poor installation.
5.3 Condensate discharge
The discharge of condensate from the air conditioner shall not hinder the normal life and work of others. Air conditioners installed in buildings on both sides of roads and public passages should not discharge their condensate onto the walls of the buildings and outdoor pavement. 5.4 Refrigerant
The refrigerant used in the air conditioner shall comply with the requirements of GB/T7373. When installing, the refrigerant should be added to the air conditioner in accordance with the requirements of the product manual, and the refrigerant leakage test should be carried out according to the applicable method selected in accordance with Article 7.4. 5.5 Installation location
5.5.1 The air conditioner should be located and installed according to the user's environmental conditions and comprehensively consider the following factors: a) Avoid places where flammable gases leak or environments with strong corrosive gases; b) Avoid places where artificial strong electricity and magnetic fields are directly affected; c) Try to avoid places that are prone to noise and vibration; d) Try to avoid places with harsh natural conditions (such as heavy smoke, strong wind and sand, direct sunlight or high temperature heat sources); e) Places that are not easily accessible to children;
f) Try to shorten the length of the connection between the indoor unit and the outdoor unit; g) Places that are convenient for maintenance and inspection and reasonably ventilated. 5.5.2 The installation of the indoor unit of the air conditioner should fully consider the indoor space location and layout to ensure that the airflow organization is reasonable and unobstructed. The installation of the outdoor unit of the air conditioner should take into account the requirements of environmental protection and city appearance, especially when installing the air conditioner on famous and high-quality buildings, ancient buildings, and buildings on both sides of the main streets of the city, the relevant provisions of the city appearance should be followed. 5.5.3 The outdoor unit of the air conditioner should not be installed in public places such as corridors, stairs, and exits inside the building. 5.5.4 The outdoor unit of the air conditioner should not occupy the public sidewalk. The bottom of the mounting frame of the air conditioner installed on the buildings on both sides of the road (the mounting frame can be installed horizontally when it does not affect the public passage) should be more than 2.5m away from the ground. 533
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The outdoor unit of the air conditioner should be as far away from the doors, windows and green plants of the adjacent party as possible, and the distance from the doors and windows of the opposite party shall not be less than the following values: a) 3m for air conditioners with a rated cooling capacity of not more than 4.5kW; b) 4m for air conditioners with a rated cooling capacity of more than 4.5kW. If the above requirements cannot be met due to limited conditions, the relevant parties should be consulted to resolve the problem or take corresponding protective measures. 5.5.5 The installation height of the air conditioner connecting pipeline passing through the free space in the building should not be less than 2.5m from the ground, unless the pipeline is installed close to the ceiling or approved by the relevant departments. The connecting pipeline of the air conditioner should not block the passage, and generally should not pass through the ground, floor or roof, otherwise appropriate leakage prevention and electrical insulation measures should be taken.
5.5.6 When the pipeline of the air conditioner passes through the brick or concrete structure, it should be sleeved, and appropriate insulation and support measures should be taken to prevent damage caused by vibration, stress or erosion.
5.5.7 When using flexible hoses, they should be well protected to prevent mechanical damage and should be inspected regularly. 5.5.8 The piping and wiring of the air conditioner should be connected correctly and firmly, with reasonable direction and curvature. The installation height difference, connecting pipe length, refrigerant replenishment, etc. of the split unit should comply with the requirements of the product manual. 5.6 Installation surface
5.6.1 The installation surface of the air conditioner should be firm and strong with sufficient bearing capacity. When the installation surface is the wall or roof of a building, it must be a solid brick, concrete or an installation surface with equivalent strength, and its structure and material should comply with the relevant requirements of the building code. 5.6.2 When the building has a reserved installation surface for the air conditioner, a reinforced concrete structure with sufficient strength must be used, and its load-bearing capacity should not be less than the actual weight carried (at least 200kg). The requirements of ventilation, noise and city appearance after the air conditioner is installed should be fully considered. 5.6.3 When the installation surface is made of wood, hollow brick, metal, non-metallic structure or the decoration layer of the installation surface is too thick and its strength is obviously insufficient, corresponding reinforcement, support and shock absorption measures should be taken to prevent affecting the normal operation of the air conditioner or causing safety hazards. 5.7 Electrical safety
5.7.1 Power supply
The power supply used by the air conditioner should generally be a single-phase 220V or (and) three-phase 380V AC power supply with a frequency of 50Hz and a voltage within the range of 90% to 110% of the rated voltage.
The user should have a qualified power supply that is consistent with the nameplate of the air conditioner to be installed, such as sufficient power capacity, reliable grounding and easy installation. 5.7.2 Electromagnetic interference
The outdoor unit of the air conditioner should be installed away from strong electromagnetic interference sources, and the indoor unit should be installed away from electrical appliances such as televisions and stereos as much as possible to prevent electromagnetic interference.
5.7.3 When installing the air conditioner in an area with frequent lightning in a humid and hot environment, on an independent building at a high position or in an open space, if there are no lightning protection facilities around, lightning protection measures should be considered when necessary. 5.7.4 The electrical connection of the air conditioner generally uses a dedicated branch circuit, the capacity of which should be greater than 1.5 times the maximum current value of the air conditioner, and the wire diameter (or cross-sectional area) of the household wire and the household wire should be selected according to the maximum power consumption of the user. 5.7.5 The power line should be installed with protective devices such as leakage protectors or air switches, and the air conditioner should be reliably connected to the electrical wiring in the room, and the power cord and its end should not be changed at will. 5.7.6 The indoor and outdoor electrical connection wires of the air conditioner should not be affected by tensile and torsion stress, and the wiring length should not be changed at will. If it is necessary to lengthen or change, wires that meet the requirements should be used. 5.7.7 When the user's power supply is equipped with a socket, it should be a fixed dedicated socket with a ground wire and should be close to the power plug of the air conditioner. Its socket structure should match the power plug of the air conditioner to be installed and comply with the requirements of GB2099.1 and GB1002. 5.7.8 The installation of the air conditioner should have good grounding. The grounding wire and the grounding terminal or grounding terminal must be tightly connected and properly locked. It cannot be loosened without tools and complies with the requirements of Chapter 27 of GB4706.32-1996. When there is no grounding wire in the building, the installer has the right to refuse installation, or consult with the user to take correct and effective grounding measures or reliable safety measures before installation. Its grounding should comply with the requirements of GB50169.
The yellow-green two-color wire can only be used for grounding wire and cannot be used for other purposes. 534
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The grounding terminal or grounding contact and the accessible metal shell of the air conditioner should have low resistance (<0.12). The grounding resistance of the grounding device should generally be less than 40. If necessary, it can be checked according to Article 7.3.2. 5.8 Mechanical strength
5.8.1 Load-bearing
The load-bearing capacity of the air conditioner mounting frame should not be less than 4 times the weight of the air conditioner unit, and the load-bearing capacity of the outdoor unit mounting frame should not be less than 180kg. The outdoor unit of the air conditioner should not be wall-mounted on a mounting surface with loose materials (such as brick walls of old houses, hollow brick walls, etc.); when wall-mounting is required due to installation conditions, the material strength and load-bearing tolerance of the mounting surface and the number of air conditioners installed on the same mounting surface should be fully considered. If necessary, reinforcement or protection measures should be taken to ensure the safe operation of the air conditioner and personal safety. 5.8.2 Anti-loosening
When installing the air conditioner, the connection between the mounting surface and the mounting frame, and between the mounting frame and the unit should be firm, stable and reliable to ensure that the air conditioner will not slip, fall over or fall after installation.
5.8.3 Anti-rust
Steel mounting frames and steel fasteners should be treated with anti-rust treatment. After anti-rust treatment, the mounting parts should meet the requirements of 5.2.20~5.2.21 in GB/T7725-1996; electroplated parts should meet the requirements of 5.2.19 in GB/T7725-1996 after treatment. 5.9 Installation life
The installation life of the air conditioner should not be less than the service life of the product. Within one year after the installation of the air conditioner, the normal operation and performance of the air conditioner should not be affected by poor installation. Within three years after the installation, the safe operation of the air conditioner should not be affected by poor installation and major safety accidents should not occur. After the air conditioner is installed and used, the user should frequently check and perform necessary maintenance according to the use situation and report to the relevant departments regularly to ensure the normal, safe and reliable operation of the air conditioner. 6 Installation and operation procedures
6.1 Installation preparation
a) The installer should prepare the air conditioner installation tools and necessary qualified measuring instruments; b) Check whether the air conditioner is intact and whether the accompanying documents and accessories are complete; c) Carefully read the installation and operation instructions (product manual) to understand the functions, usage methods, installation requirements and installation methods of the air conditioner to be installed;
d) Check whether the user's power supply voltage, frequency, meter capacity, grounding conditions, wire specifications, sockets, fuses, protection switches, leakage protectors, etc. can meet the requirements of the air conditioner to be installed; e) Assist the user to select the installation location of the air conditioner, and ask the user (if necessary) whether the installation of the air conditioner has obtained the consent of the property management, real estate management or municipal management department:
f) Check whether the installation location, installation surface and mounting frame meet the installation and use requirements, safety requirements and environmental protection requirements of the air conditioner to be installed.
6.2 Installation and Operation
a) The air conditioner should be installed with the accessories that come with it. The installer should not replace, omit or modify them at will. If the installer needs to prepare them on site, they should be made in accordance with the requirements of this specification and the installation manual. If necessary, they should be reviewed and approved by professional technicians and can only be used after passing the inspection. b) Choose a reasonable installation method according to the specific type of the air conditioner, and firmly connect the mounting frame to the mounting surface. During construction, you should pay attention not to damage the safety guarantee structure of the building. If necessary, take corresponding measures to ensure that you and others are not harmed. c) Fix the air conditioner mechanically according to the installation manual of the air conditioner. The air conditioner after installation should be safe, stable and well ventilated. d) For split air conditioners, pipes and wires should be correctly connected and fixed in strict accordance with the requirements of this specification and the installation manual. The power cord and its terminal blocks should not be changed without authorization. The cover of the electrical components must be fixed well after installation. When pipes and wires pass through the walls of buildings, they should be protected by wall-penetrating pipes and measures should be taken to prevent rain leakage, waterproofing and leakage. When connecting the pipes, no moisture, air, dust or other debris should be introduced, and the air in the connecting pipes should be exhausted before tightening to ensure that the pipes are dry, clean and well sealed; Note: Split-type air conditioners are not allowed to be installed on rainy and snowy days unless adequate measures have been taken to ensure that the installation work is not affected. 535
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e) Reasonably install and arrange the air conditioner drainage elbows and drainage pipes to ensure that the air conditioner does not drip; the condensed water should be drained smoothly and the drainage should not cause harm to the building;
f) Correctly wrap the pipelines and properly fix them in the appropriate position. 6.3 Inspection and trial operation
6.3.1 After the air conditioner is installed, the installation work should be inspected according to the requirements of Table 1, with special attention to: a) The pipeline connection and direction should be reasonable;
b) The electrical configuration should be safe and correct;
c) The mechanical connection should be firm and reliable;
, d) The use function should be able to be well realized.
Air conditioner
Insulation accessories
Mechanical strength
Insulation parts
Insulation surface
Electrical safety
Insulation resistance
Leakage inspection
Inspection items
Noise and vibration
Condensate removal
Refrigerant leakage
Inspection contents and inspection requirements
5.3,6.2e)
Inspection methods
7.1 (when necessary)
7.1 (when necessary)
7.2 (when necessary)
Hand model and ear listening, simple noise and vibration meter
Visual inspection7.5
6.3.2 The air conditioner shall be tested in accordance with the requirements of this specification and the instruction manual, and the running time shall not be less than 30 minutes. 6.3.3 After the air conditioner runs stably, the air conditioner should be checked according to the product manual to see if it can function well. If necessary, the air conditioner supply and return air temperature, operating current and refrigeration system pressure can be tested to ensure that the air conditioner is running normally. 6.4 After the air conditioner is installed, the installer should: a) carefully fill out the installation voucher, which will be confirmed by the user and signed by the user and the installer for record; b) introduce and explain to the user the necessary knowledge of the use, maintenance and care of the air conditioner, and explain to the user the rights and responsibilities of the user.
7 Inspection method
7.1 Mechanical strength test
The load-bearing mounting parts should be subjected to a load-bearing test before finalization and mass production. Fix the mounting frame on the simulated mounting surface, fix it on the mounting frame with fasteners or equivalent methods according to the normal use state of the air conditioner, and load it according to the most unfavorable force position and direction. The load-bearing mounting frame should not slip, loosen or bend. 7.2 Anti-rust test
The mounting frame, fasteners and metal parts such as guardrails and baffles of the air conditioner that may have adverse effects on safety and environmental protection shall be subjected to surface coating wet heat test and paint film adhesion test of painted parts according to 6.3.20-6.3.21 of GB/T7725-1996. The sampling size can be 536
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Select samples in proportion according to the standard requirements or actual conditions. Electroplated parts shall be tested according to the requirements of 6.3.19 of GB/T7725-1996. 7.3 Electrical safety inspection
7.3.1 Insulation resistance
After the indoor and outdoor units of the air conditioner are fixed and pipes and wires are connected, the insulation resistance shall be measured according to Chapter 16 of GB4706.321996.
7.3.2 Grounding inspection
The installer shall inspect the grounding of the installed and fixed air conditioner and the user's power supply through visual inspection and use of effective or special grounding measuring devices (ground resistance meter, etc.), and determine the reliability of the grounding. 7.3.3 Leakage inspection
After the air conditioner is installed, it shall be tested for operation. The installer may use a test pen or a multimeter to check the possible leakage parts of its shell. If there is leakage, the machine shall be shut down immediately and further inspection and judgment of the cause of the fault shall be carried out. If it is indeed an installation problem, it shall be solved and tested again until the air conditioner is safe and operates normally. 7.4 Refrigerant Leakage Detection
According to the suspected leakage points during the installation of the air conditioner, such as the four interfaces connecting the internal and external units of the split unit and the valve cores of the two-way and three-way valves, the following methods can be used for on-site inspection:
a) Foam method: Apply soapy water or foaming agent evenly or spray it on the place where leakage may occur, and carefully observe whether there are bubbles; b) Instrument leak detection method: According to the instructions of the leak detector (such as halogen leak detector), aim the instrument probe at the suspected leakage part and carefully check it.
7.5 Operation Inspection
After the air conditioner is running stably, use the temperature detector's temperature sensing head to measure the air outlet and return air temperature of the air conditioner at 5cm~~15cm away from the indoor air outlet, and use a clamp ammeter to measure the current value of the air conditioner power line. If necessary, install pressure gauges on the high and low pressure sides of the refrigeration system, observe the pressure changes and record the pressure values. 8 Training of installation personnel
8.1 Personnel engaged in air conditioner installation must receive special training. 5371. Installation preparation
a) The installer should prepare all the air conditioner installation tools and necessary qualified measuring instruments; b) Check whether the air conditioner is in good condition and whether the accompanying documents and accessories are complete; c) Carefully read the installation and operating instructions (product manual) to understand the functions, usage methods, installation requirements and installation methods of the air conditioner to be installed;
d) Check whether the user's power supply voltage, frequency, meter capacity, grounding conditions, wire specifications, sockets, fuses, protection switches, leakage protectors, etc. can meet the requirements of the air conditioner to be installed; e) Assist the user to select the installation location of the air conditioner, and ask the user (if necessary) whether the installation of the air conditioner has obtained the consent of the property management, real estate management or municipal management department:
f) Check whether the installation location, installation surface and mounting frame meet the installation and usage requirements, safety requirements and environmental protection requirements of the air conditioner to be installed.
6.2 Installation and Operation
a) The air conditioner should be installed with the accessories that come with it. The installer should not replace, omit or modify them at will. If the installer needs to prepare them on site, they should be made in accordance with the requirements of this specification and the installation manual. If necessary, they should be reviewed and approved by professional technicians and can only be used after passing the inspection. b) Choose a reasonable installation method according to the specific type of the air conditioner, and firmly connect the mounting frame to the mounting surface. During construction, you should pay attention not to damage the safety guarantee structure of the building. If necessary, take corresponding measures to ensure that you and others are not harmed. c) Fix the air conditioner mechanically according to the installation manual of the air conditioner. The air conditioner after installation should be safe, stable and well ventilated. d) For split air conditioners, pipes and wires should be correctly connected and fixed in strict accordance with the requirements of this specification and the installation manual. The power cord and its terminal blocks should not be changed without authorization. The cover of the electrical components must be fixed well after installation. When pipes and wires pass through the walls of buildings, they should be protected by wall-penetrating pipes and measures should be taken to prevent rain leakage, waterproofing and leakage. When connecting the pipes, no moisture, air, dust or other debris should be introduced, and the air in the connecting pipes should be exhausted before tightening to ensure that the pipes are dry, clean and well sealed; Note: Split-type air conditioners are not allowed to be installed on rainy and snowy days unless adequate measures have been taken to ensure that the installation work is not affected. 535
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e) Reasonably install and arrange the air conditioner drainage elbows and drainage pipes to ensure that the air conditioner does not drip; the condensed water should be drained smoothly and the drainage should not cause harm to the building;
f) Correctly wrap the pipelines and properly fix them in the appropriate position. 6.3 Inspection and trial operation
6.3.1 After the air conditioner is installed, the installation work should be inspected according to the requirements of Table 1, with special attention to: a) The pipeline connection and direction should be reasonable;
b) The electrical configuration should be safe and correct;
c) The mechanical connection should be firm and reliable;
, d) The use function should be able to be well realized.
Air conditioner
Insulation accessories
Mechanical strength
Insulation parts
Insulation surface
Electrical safety
Insulation resistance
Leakage inspection
Inspection items
Noise and vibration
Condensate removal
Refrigerant leakage
Inspection contents and inspection requirements
5.3,6.2e)
Inspection methods
7.1 (when necessary)
7.1 (when necessary)
7.2 (when necessary)
Hand model and ear listening, simple noise and vibration meter
Visual inspection7.5
6.3.2 The air conditioner shall be tested in accordance with the requirements of this specification and the instruction manual, and the running time shall not be less than 30 minutes. 6.3.3 After the air conditioner runs stably, the air conditioner should be checked according to the product manual to see if it can function well. If necessary, the air conditioner supply and return air temperature, operating current and refrigeration system pressure can be tested to ensure that the air conditioner is running normally. 6.4 After the air conditioner is installed, the installer should: a) carefully fill out the installation voucher, which will be confirmed by the user and signed by the user and the installer for record; b) introduce and explain to the user the necessary knowledge of the use, maintenance and care of the air conditioner, and explain to the user the rights and responsibilities of the user.
7 Inspection method
7.1 Mechanical strength test
The load-bearing mounting parts should be subjected to a load-bearing test before finalization and mass production. Fix the mounting frame on the simulated mounting surface, fix it on the mounting frame with fasteners or equivalent methods according to the normal use state of the air conditioner, and load it according to the most unfavorable force position and direction. The load-bearing mounting frame should not slip, loosen or bend. 7.2 Anti-rust test
The mounting frame, fasteners and metal parts such as guardrails and baffles of the air conditioner that may have adverse effects on safety and environmental protection shall be subjected to surface coating wet heat test and paint film adhesion test of painted parts according to 6.3.20-6.3.21 of GB/T7725-1996. The sampling size can be 536
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Select samples in proportion according to the standard requirements or actual conditions. Electroplated parts shall be tested according to the requirements of 6.3.19 of GB/T7725-1996. 7.3 Electrical safety inspection
7.3.1 Insulation resistance
After the indoor and outdoor units of the air conditioner are fixed and pipes and wires are connected, the insulation resistance shall be measured according to Chapter 16 of GB4706.321996.
7.3.2 Grounding inspection
The installer shall inspect the grounding of the installed and fixed air conditioner and the user's power supply through visual inspection and use of effective or special grounding measuring devices (ground resistance meter, etc.), and determine the reliability of the grounding. 7.3.3 Leakage inspection
After the air conditioner is installed, it shall be tested for operation. The installer may use a test pen or a multimeter to check the possible leakage parts of its shell. If there is leakage, the machine shall be shut down immediately and further inspection and judgment of the cause of the fault shall be carried out. If it is indeed an installation problem, it shall be solved and tested again until the air conditioner is safe and operates normally. 7.4 Refrigerant Leakage Detection
According to the suspected leakage points during the installation of the air conditioner, such as the four interfaces connecting the internal and external units of the split unit and the valve cores of the two-way and three-way valves, the following methods can be used for on-site inspection:
a) Foam method: Apply soapy water or foaming agent evenly or spray it on the place where leakage may occur, and carefully observe whether there are bubbles; b) Instrument leak detection method: According to the instructions of the leak detector (such as halogen leak detector), aim the instrument probe at the suspected leakage part and carefully check it.
7.5 Operation Inspection
After the air conditioner is running stably, use the temperature detector's temperature sensing head to measure the air outlet and return air temperature of the air conditioner at 5cm~~15cm away from the indoor air outlet, and use a clamp ammeter to measure the current value of the air conditioner power line. If necessary, install pressure gauges on the high and low pressure sides of the refrigeration system, observe the pressure changes and record the pressure values. 8 Training of installation personnel
8.1 Personnel engaged in air conditioner installation must receive special training. 5371. Installation preparation
a) The installer should prepare all the air conditioner installation tools and necessary qualified measuring instruments; b) Check whether the air conditioner is in good condition and whether the accompanying documents and accessories are complete; c) Carefully read the installation and operating instructions (product manual) to understand the functions, usage methods, installation requirements and installation methods of the air conditioner to be installed;
d) Check whether the user's power supply voltage, frequency, meter capacity, grounding conditions, wire specifications, sockets, fuses, protection switches, leakage protectors, etc. can meet the requirements of the air conditioner to be installed; e) Assist the user to select the installation location of the air conditioner, and ask the user (if necessary) whether the installation of the air conditioner has obtained the consent of the property management, real estate management or municipal management department:
f) Check whether the installation location, installation surface and mounting frame meet the installation and usage requirements, safety requirements and environmental protection requirements of the air conditioner to be installed.
6.2 Installation and Operation
a) The air conditioner should be installed with the accessories that come with it. The installer should not replace, omit or modify them at will. If the installer needs to prepare them on site, they should be made in accordance with the requirements of this specification and the installation manual. If necessary, they should be reviewed and approved by professional technicians and can only be used after passing the inspection. b) Choose a reasonable installation method according to the specific type of the air conditioner, and firmly connect the mounting frame to the mounting surface. During construction, you should pay attention not to damage the safety guarantee structure of the building. If necessary, take corresponding measures to ensure that you and others are not harmed. c) Fix the air conditioner mechanically according to the installation manual of the air conditioner. The air conditioner after installation should be safe, stable and well ventilated. d) For split air conditioners, pipes and wires should be correctly connected and fixed in strict accordance with the requirements of this specification and the installation manual. The power cord and its terminal blocks should not be changed without authorization. The cover of the electrical components must be fixed well after installation. When pipes and wires pass through the walls of buildings, they should be protected by wall-penetrating pipes and measures should be taken to prevent rain leakage, waterproofing and leakage. When connecting the pipes, no moisture, air, dust or other debris should be introduced, and the air in the connecting pipes should be exhausted before tightening to ensure that the pipes are dry, clean and well sealed; Note: Split-type air conditioners are not allowed to be installed on rainy and snowy days unless adequate measures have been taken to ensure that the installation work is not affected. 535
GB 17790—1999
e) Reasonably install and arrange the air conditioner drainage elbows and drainage pipes to ensure that the air conditioner does not drip; the condensed water should be drained smoothly and the drainage should not cause harm to the building;
f) Correctly wrap the pipelines and properly fix them in the appropriate position. 6.3 Inspection and trial operation
6.3.1 After the air conditioner is installed, the installation work should be inspected according to the requirements of Table 1, with special attention to: a) The pipeline connection and direction should be reasonable;
b) The electrical configuration should be safe and correct;
c) The mechanical connection should be firm and reliable;
, d) The use function should be able to be well realized.
Air conditioner
Insulation accessories
Mechanical strength
Insulation parts
Insulation surface
Electrical safety
Insulation resistance
Leakage inspection
Inspection items
Noise and vibration
Condensate removal
Refrigerant leakage
Inspection contents and inspection requirements
5.3,6.2e)
Inspection methods
7.1 (when necessary)
7.1 (when necessary)
7.2 (when necessary)
Hand model and ear listening, simple noise and vibration meter
Visual inspection7.5
6.3.2 The air conditioner shall be tested in accordance with the requirements of this specification and the instruction manual, and the running time shall not be less than 30 minutes. 6.3.3 After the air conditioner runs stably, the air conditioner should be checked according to the product manual to see if it can function well. If necessary, the air conditioner supply and return air temperature, operating current and refrigeration system pressure can be tested to ensure that the air conditioner is running normally. 6.4 After the air conditioner is installed, the installer should: a) carefully fill out the installation voucher, which will be confirmed by the user and signed by the user and the installer for record; b) introduce and explain to the user the necessary knowledge of the use, maintenance and care of the air conditioner, and explain to the user the rights and responsibilities of the user.
7 Inspection method
7.1 Mechanical strength test
The load-bearing mounting parts should be subjected to a load-bearing test before finalization and mass production. Fix the mounting frame on the simulated mounting surface, fix it on the mounting frame with fasteners or equivalent methods according to the normal use state of the air conditioner, and load it according to the most unfavorable force position and direction. The load-bearing mounting frame should not slip, loosen or bend. 7.2 Anti-rust test
The mounting frame, fasteners and metal parts such as guardrails and baffles of the air conditioner that may have adverse effects on safety and environmental protection shall be subjected to surface coating wet heat test and paint film adhesion test of painted parts according to 6.3.20-6.3.21 of GB/T7725-1996. The sampling size can be 536
GB 17790--1999
Select samples in proportion according to the standard requirements or actual conditions. Electroplated parts shall be tested according to the requirements of 6.3.19 of GB/T7725-1996. 7.3 Electrical safety inspection
7.3.1 Insulation resistancewww.bzxz.net
After the indoor and outdoor units of the air conditioner are fixed and pipes and wires are connected, the insulation resistance shall be measured according to Chapter 16 of GB4706.321996.
7.3.2 Grounding inspection
The installer shall inspect the grounding of the installed and fixed air conditioner and the user's power supply through visual inspection and use of effective or special grounding measuring devices (ground resistance meter, etc.), and determine the reliability of the grounding. 7.3.3 Leakage inspection
After the air conditioner is installed, it shall be tested for operation. The installer may use a test pen or a multimeter to check the possible leakage parts of its shell. If there is leakage, the machine shall be shut down immediately and further inspection and judgment of the cause of the fault shall be carried out. If it is indeed an installation problem, it shall be solved and tested again until the air conditioner is safe and operates normally. 7.4 Refrigerant Leakage Detection
According to the suspected leakage points during the installation of the air conditioner, such as the four interfaces connecting the internal and external units of the split unit and the valve cores of the two-way and three-way valves, the following methods can be used for on-site inspection:
a) Foam method: Apply soapy water or foaming agent evenly or spray it on the place where leakage may occur, and carefully observe whether there are bubbles; b) Instrument leak detection method: According to the instructions of the leak detector (such as halogen leak detector), aim the instrument probe at the suspected leakage part and carefully check it.
7.5 Operation Inspection
After the air conditioner is running stably, use the temperature detector's temperature sensing head to measure the air outlet and return air temperature of the air conditioner at 5cm~~15cm away from the indoor air outlet, and use a clamp ammeter to measure the current value of the air conditioner power line. If necessary, install pressure gauges on the high and low pressure sides of the refrigeration system, observe the pressure changes and record the pressure values. 8 Training of installation personnel
8.1 Personnel engaged in air conditioner installation must receive special training. 5372 Installation and Operation
a) The air conditioner should be installed with the accessories that come with it. The installer should not replace, omit or modify them at will. If the installer needs to prepare them on site, they should be made in accordance with the requirements of this specification and the installation manual. If necessary, they should be reviewed and approved by professional technicians and can only be used after passing the inspection; b) Choose a reasonable installation method according to the specific type of the air conditioner, and firmly connect the mounting frame to the mounting surface. During construction, you should pay attention not to damage the safety guarantee structure of the building, and take corresponding measures to ensure that you and others are not harmed if necessary; c) Fix the air conditioner mechanically according to the installation manual of the air conditioner. The air conditioner after installation should be safe, stable and well ventilated: d) For split air conditioners, pipes and wires should be correctly connected and fixed in strict accordance with the requirements of this specification and the installation manual. The power cord and its terminal blocks should not be changed without authorization. The cover of the electrical components must be fixed well after installation. When pipes and wires pass through the walls of buildings, they should be protected by wall-penetrating pipes and measures should be taken to prevent rain leakage, waterproofing and leakage. When connecting the pipes, no moisture, air, dust or other debris should be introduced, and the air in the connecting pipes should be exhausted before tightening to ensure that the pipes are dry, clean and well sealed; Note: Split-type air conditioners are not allowed to be installed on rainy and snowy days unless adequate measures have been taken to ensure that the installation work is not affected. 535
GB 17790—1999
e) Reasonably install and arrange the air conditioner drainage elbows and drainage pipes to ensure that the air conditioner does not drip; the condensed water should be drained smoothly and the drainage should not cause harm to the building;
f) Correctly wrap the pipelines and properly fix them in the appropriate position. 6.3 Inspection and trial operation
6.3.1 After the air conditioner is installed, the installation work should be inspected according to the requirements of Table 1, with special attention to: a) The pipeline connection and direction should be reasonable;
b) The electrical configuration should be safe and correct;
c) The mechanical connection should be firm and reliable;
, d) The use function should be able to be well realized.
Air conditioner
Insulation accessories
Mechanical strength
Insulation parts
Insulation surface
Electrical safety
Insulation resistance
Leakage inspection
Inspection items
Noise and vibration
Condensate removal
Refrigerant leakage
Inspection contents and inspection requirements
5.3,6.2e)
Inspection methods
7.1 (when necessary)
7.1 (when necessary)
7.2 (when necessary)
Hand model and ear listening, simple noise and vibration meter
Visual inspection7.5
6.3.2 The air conditioner shall be tested in accordance with the requirements of this specification and the instruction manual, and the running time shall not be less than 30 minutes. 6.3.3 After the air conditioner runs stably, the air conditioner should be checked according to the product manual to see if it can function well. If necessary, the air conditioner supply and return air temperature, operating current and refrigeration system pressure can be tested to ensure that the air conditioner is running normally. 6.4 After the air conditioner is installed, the installer should: a) carefully fill out the installation voucher, which will be confirmed by the user and signed by the user and the installer for record; b) introduce and explain to the user the necessary knowledge of the use, maintenance and care of the air conditioner, and explain to the user the rights and responsibilities of the user.
7 Inspection method
7.1 Mechanical strength test
The load-bearing mounting parts should be subjected to a load-bearing test before finalization and mass production. Fix the mounting frame on the simulated mounting surface, fix it on the mounting frame with fasteners or equivalent methods according to the normal use state of the air conditioner, and load it according to the most unfavorable force position and direction. The load-bearing mounting frame should not slip, loosen or bend. 7.2 Anti-rust test
The mounting frame, fasteners and metal parts such as guardrails and baffles of the air conditioner that may have adverse effects on safety and environmental protection shall be subjected to surface coating wet heat test and paint film adhesion test of painted parts according to 6.3.20-6.3.21 of GB/T7725-1996. The sampling size can be 536
GB 17790--1999
Select samples in proportion according to the standard requirements or actual conditions. Electroplated parts shall be tested according to the requirements of 6.3.19 of GB/T7725-1996. 7.3 Electrical safety inspection
7.3.1 Insulation resistance
After the indoor and outdoor units of the air conditioner are fixed and pipes and wires are connected, the insulation resistance shall be measured according to Chapter 16 of GB4706.321996.
7.3.2 Grounding inspection
The installer shall inspect the grounding of the installed and fixed air conditioner and the user's power supply through visual inspection and use of effective or special grounding measuring devices (ground resistance meter, etc.), and determine the reliability of the grounding. 7.3.3 Leakage inspection
After the air conditioner is installed, it shall be tested for operation. The installer may use a test pen or a multimeter to check the possible leakage parts of its shell. If there is leakage, the machine shall be shut down immediately and further inspection and judgment of the cause of the fault shall be carried out. If it is indeed an installation problem, it shall be solved and tested again until the air conditioner is safe and operates normally. 7.4 Refrigerant Leakage Detection
According to the suspected leakage points during the installation of the air conditioner, such as the four interfaces connecting the internal and external units of the split unit and the valve cores of the two-way and three-way valves, the following methods can be used for on-site inspection:
a) Foam method: Apply soapy water or foaming agent evenly or spray it on the place where leakage may occur, and carefully observe whether there are bubbles; b) Instrument leak detection method: According to the instructions of the leak detector (such as halogen leak detector), aim the instrument probe at the suspected leakage part and carefully check it.
7.5 Operation Inspection
After the air conditioner is running stably, use the temperature detector's temperature sensing head to measure the air outlet and return air temperature of the air conditioner at 5cm~~15cm away from the indoor air outlet, and use a clamp ammeter to measure the current value of the air conditioner power line. If necessary, install pressure gauges on the high and low pressure sides of the refrigeration system, observe the pressure changes and record the pressure values. 8 Training of installation personnel
8.1 Personnel engaged in air conditioner installation must receive special training. 5372 Installation and Operation
a) The air conditioner should be installed with the accessories that come with it. The installer should not replace, omit or modify them at will. If the installer needs to prepare them on site, they should be made in accordance with the requirements of this specification and the installation manual. If necessary, they should be reviewed and approved by professional technicians and can only be used after passing the inspection; b) Choose a reasonable installation method according to the specific type of the air conditioner, and firmly connect the mounting frame to the mounting surface. During construction, you should pay attention not to damage the safety guarantee structure of the building, and take corresponding measures to ensure that you and others are not harmed if necessary; c) Fix the air conditioner mechanically according to the installation manual of the air conditioner. The air conditioner after installation should be safe, stable and well ventilated: d) For split air conditioners, pipes and wires should be correctly connected and fixed in strict accordance with the requirements of this specification and the installation manual. The power cord and its terminal blocks should not be changed without authorization. The cover of the electrical components must be fixed well after installation. When pipes and wires pass through the walls of buildings, they should be protected by wall-penetrating pipes and measures should be taken to prevent rain leakage, waterproofing and leakage. When connecting the pipes, no moisture, air, dust or other debris should be introduced, and the air in the connecting pipes should be exhausted before tightening to ensure that the pipes are dry, clean and well sealed; Note: Split-type air conditioners are not allowed to be installed on rainy and snowy days unless adequate measures have been taken to ensure that the installation work is not affected. 535
GB 17790—1999
e) Reasonably install and arrange the air conditioner drainage elbows and drainage pipes to ensure that the air conditioner does not drip; the condensed water should be drained smoothly and the drainage should not cause harm to the building;
f) Correctly wrap the pipelines and properly fix them in the appropriate position. 6.3 Inspection and trial operation
6.3.1 After the air conditioner is installed, the installation work should be inspected according to the requirements of Table 1, with special attention to: a) The pipeline connection and direction should be reasonable;
b) The electrical configuration should be safe and correct;
c) The mechanical connection should be firm and reliable;
, d) The use function should be able to be well realized.
Air conditioner
Insulation accessories
Mechanical strength
Insulation parts
Insulation surface
Electrical safety
Insulation resistance
Leakage inspection
Inspection items
Noise and vibration
Condensate removal
Refrigerant leakage
Inspection contents and inspection requirements
5.3,6.2e)
Inspection methods
7.1 (when necessary)
7.1 (when necessary)
7.2 (when necessary)
Hand model and ear listening, simple noise and vibration meter
Visual inspection7.5
6.3.2 The air conditioner shall be tested in accordance with the requirements of this specification and the instruction manual, and the running time shall not be less than 30 minutes. 6.3.3 After the air conditioner runs stably, the air conditioner should be checked according to the product manual to see if it can function well. If necessary, the air conditioner supply and return air temperature, operating current and refrigeration system pressure can be tested to ensure that the air conditioner is running normally. 6.4 After the air conditioner is installed, the installer should: a) carefully fill out the installation voucher, which will be confirmed by the user and signed by the user and the installer for record; b) introduce and explain to the user the necessary knowledge of the use, maintenance and care of the air conditioner, and explain to the user the rights and responsibilities of the user.
7 Inspection method
7.1 Mechanical strength test
The load-bearing mounting parts should be subjected to a load-bearing test before finalization and mass production. Fix the mounting frame on the simulated mounting surface, fix it on the mounting frame with fasteners or equivalent methods according to the normal use state of the air conditioner, and load it according to the most unfavorable force position and direction. The load-bearing mounting frame should not slip, loosen or bend. 7.2 Anti-rust test
The mounting frame, fasteners and metal parts such as guardrails and baffles of the air conditioner that may have adverse effects on safety and environmental protection shall be subjected to surface coating wet heat test and paint film adhesion test of painted parts according to 6.3.20-6.3.21 of GB/T7725-1996. The sampling size can be 536
GB 17790--1999
Select samples in proportion according to the standard requirements or actual conditions. Electroplated parts shall be tested according to the requirements of 6.3.19 of GB/T7725-1996. 7.3 Electrical safety inspection
7.3.1 Insulation resistance
After the indoor and outdoor units of the air conditioner are fixed and pipes and wires are connected, the insulation resistance shall be measured according to Chapter 16 of GB4706.321996.
7.3.2 Grounding inspection
The installer shall inspect the grounding of the installed and fixed air conditioner and the user's power supply through visual inspection and use of effective or special grounding measuring devices (ground resistance meter, etc.), and determine the reliability of the grounding. 7.3.3 Leakage inspection
After the air conditioner is installed, it shall be tested for operation. The installer may use a test pen or a multimeter to check the possible leakage parts of its shell. If there is leakage, the machine shall be shut down immediately and further inspection and judgment of the cause of the fault shall be carried out. If it is indeed an installation problem, it shall be solved and tested again until the air conditioner is safe and operates normally. 7.4 Refrigerant Leakage Detection
According to the suspected leakage points during the installation of the air conditioner, such as the four interfaces connecting the internal and external units of the split unit and the valve cores of the two-way and three-way valves, the following methods can be used for on-site inspection:
a) Foam method: Apply soapy water or foaming agent evenly or spray it on the place where leakage may occur, and carefully observe whether there are bubbles; b) Instrument leak detection method: According to the instructions of the leak detector (such as halogen leak detector), aim the instrument probe at the suspected leakage part and carefully check it.
7.5 Operation Inspection
After the air conditioner is running stably, use the temperature detector's temperature sensing head to measure the air outlet and return air temperature of the air conditioner at 5cm~~15cm away from the indoor air outlet, and use a clamp ammeter to measure the current value of the air conditioner power line. If necessary, install pressure gauges on the high and low pressure sides of the refrigeration system, observe the pressure changes and record the pressure va
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