GB/T 19569-2026Air conditioning units for clean operating rooms (English PDF)

5.1 General Rules

5.1.1 The air conditioner shall conform to the requirements of this document and be manufactured according to the drawings and technical documents approved through the prescribed procedures (or as agreed by the user and the manufacturer). (Discussion) Manufacturing.

5.1.2 The assembly of all components of the air conditioner should be firm and reliable, and there should be no mutual friction or collision between the pipes and components.

5.1.3 The configuration of each functional section of the air conditioner should not only ensure the requirements for heat and humidity treatment of the air, but also prevent dust accumulation and bacterial growth inside the air conditioner, ensuring... The delivered air meets hygiene requirements.

5.1.4 Air conditioners should be equipped with drain outlets, preferably located in the positive pressure section, and the drainage should be unobstructed, without overflow or leakage.

5.1.5 A coarse air filter with an efficiency rating of at least C4 should be used at the air inlet of the air conditioner; a filter with an efficiency rating of at least C4 should be used at the air outlet. This is a medium-efficiency or sub-high-efficiency air filter for the Z3 series. When using an antibacterial filter (which, in addition to meeting relevant filtration efficiency standards, also...), The same filtration efficiency is required when the filter effectively kills common bacteria attached to the filter media, but does not release chemical pollutants.

Note. Air filter grades are specified in GB/T 14295-2019.

5.1.6 The coarse air filter of the air conditioner should be installed at the fresh air inlet, and the medium-efficiency air filter should be installed in the positive pressure section. The fresh air conditioner should also have a coarse air filter installed at the outlet. A sub-high efficiency air filter was added to the air section.

5.1.7 The outlet of the centrifugal fan of the air conditioner should have a flexible connecting pipe, and the flexible connecting pipe should be smooth on both sides.

5.1.8 The relative humidity of the air outlet from the air conditioner shall not exceed 75%.

5.1.9 The antibacterial measures for air conditioners should at least meet the following requirements.

a) Humidifiers or dehumidifying cooling coils should not be installed directly upstream of filters or silencers to prevent moisture from penetrating the air filters;

b) The frame or support structure on the surface of any open lining material within the airflow of the air conditioner has sufficient strength, rigidity, and wear resistance to withstand [the load]. To prevent fibers from entering the airflow, the weight and pressure required during installation, operation, and maintenance must be controlled.

c) Adhesives, sealants, and sealants in the airflow of the air conditioner must not cause microbial contamination.

5.1.10 Air conditioners that use compressor refrigeration should preferably use inverter compressors.

5.2 Materials

5.2.1 The thermal insulation and sound insulation materials used for the air conditioner unit casing should be non-toxic, non-corrosive, odorless, and not easily absorbent; the exposed parts of the materials and the casing itself should also be non-toxic. It should have non-combustible or flame-retardant properties; if glass fiber material is used, there should be measures to prevent leakage.

5.2.2 The entire inner wall of the air conditioner should be smooth and not easily harbor bacteria. It is advisable to use materials that are not prone to bacterial growth.

5.2.3 If recyclable components are used in the air conditioner, the ease of component separation and recycling should be considered in the design.

5.2.4 For air conditioning components that can use renewable materials, renewable materials should be used.

5.2.5 Air conditioners should preferably be made of materials with waste disposal methods and whose disposal process has minimal environmental impact.

5.2.6 The content of hazardous substances in the hardware of the air conditioning control system shall comply with the provisions of GB/T 26572.

Note. Exceptions apply to applications exempted by government departments.

5.3 Components

5.3.1 All components of the air conditioner should be made of antibacterial materials, odorless, free of harmful substances, and should not release harmful substances. The structural design of the components... The design should prevent localized dust particle accumulation and facilitate manual and mechanical cleaning.

5.3.2 Air conditioner heat exchangers should not use finned fins, but rather fins that are less prone to dust accumulation.

5.3.3 For 100% fresh air type air conditioners, the average airflow velocity through the coil should not exceed

2.2 m/s; for recirculating air type air conditioners, the average airflow velocity through the coil should not exceed

2.2 m/s. The average velocity of the flow should not exceed

5.3.4 The condensate tray of the air conditioner should be made of corrosion-resistant material and be easy to clean.

5.3.5 When an air conditioner needs to be equipped with a humidifier, the humidifying medium used should meet hygiene requirements, and the humidifier itself should not easily breed bacteria during the humidification process. There should be no water droplets.

5.3.6 Electric heaters should be heaters that are not prone to dust accumulation, rust, or dust shedding, or other forms with similar properties.

5.3.7 For components such as fans and motors in air conditioning units that have mandatory national energy efficiency requirements, energy efficiency ratings of level 2 or above should be selected. Products.

5.3.8 The air leakage of the valve plate of the air volume regulating valve should meet the requirements of the closed type air valve in JG/T 436.

5.3.9 The air filter material of the air conditioner should be non-toxic, odorless, non-absorbent, and antibacterial. The particulate matter filtration efficiency, resistance, and other parameters of the air filter should be considered. Dust holding capacity should meet the relevant requirements of GB/T 14295-2019; all levels of air filters should be disposable, and wooden filters are not permitted. For products of the same filtration class, air filters with low resistance, high efficiency, and high dust holding capacity should be selected.

5.3.10 The high-efficiency filters configured in air conditioners shall meet the relevant requirements of GB/T 13554.

5.4 Structure

5.4.1 The thermal insulation and soundproofing layer of the air conditioner enclosure should be firmly and tightly bonded to the wall panels, and the enclosure should have measures to prevent thermal bridging. The sound insulation performance of the enclosure should meet the following requirements. Design requirements.

5.4.2 The inspection doors of the air conditioner should be airtight, flexible, and safe.

5.4.3 Outdoor air conditioners should have rainproof measures.

5.4.4 When the water pipes connecting the air conditioner pass through the housing, they should be insulated and sealed.

5.4.5 The air conditioner casing should not exhibit permanent dents or dents after transportation, startup, operation, or shutdown.

5.4.6 Air conditioners should be equipped with drain outlets, and drainage should be unobstructed, without overflow or leakage.

5.4.7 Appropriate vibration control measures should be taken for the air conditioner's fan, and protective measures should be installed on the fan transmission components exposed to the outside of the air conditioner. Device.

5.4.8 The inspection door of the filter section should allow for easy removal of the filter and provide sufficient space for replacement.

5.4.9 Air conditioners may have test holes and test instrument interfaces provided when necessary, and safety lighting with a voltage not exceeding 36V may be provided.

5.4.10 Air coolers and air heaters of air conditioners shall be equipped with drainage and exhaust devices.

5.5 Monitoring and Control

5.5.1 Air conditioners should be equipped with monitoring and control devices. Monitoring and control functions may include parameter monitoring, parameter and equipment status display, and automatic adjustment. Features include sectional control, automatic switching of operating conditions, equipment interlocking and automatic protection, etc.

5.5.2 Fresh air air conditioners should have antifreeze protection measures.

5.5.3 Air conditioners with electric heaters should have control measures to prevent the electric heating temperature from becoming too high.

5.5.4 The filter section of the air conditioner should be equipped with a differential pressure detection device or a failure warning device.

5.5.5 The fan section of the air conditioner should be equipped with a differential pressure protection device.

5.5.6 When the air conditioning system is shut down or malfunctions, ensure that any residual moisture in the coils and humidifier section is dried before turning off the air conditioner.

6.10.1 Filtration efficiency

6.10.1.1 When the highest-level air filter configured in the air conditioner is sub-high efficiency, the test shall be conducted according to the method specified in 7.13.1.1. The measured value of the filter efficiency should not be less than 95% of the stated value.

6.10.1.2 When the highest-level air filter configured in the air conditioner is high-efficiency or above, the test shall be conducted according to the method specified in 7.13.1.2. The actual measured value of the air conditioner's filtration efficiency should not be less than 95% of the declared value.

6.10.2 PMx purification efficiency When tested according to the method specified in 7.13.2, the measured value of the PMx purification efficiency of the air conditioner should not be less than 95% of the declared value.

Note. When the highest-level air filter configured in the air conditioner is of medium to high efficiency, it is recommended to specify and test the PM

2.5 purification efficiency.

6.11 Increase in ozone concentration When an air conditioner produces ozone while in operation, the ozone concentration at a distance of 5cm from the air outlet should not exceed 0.16mg/m3.

6.12 Ultraviolet Leakage When an air conditioner contains ultraviolet lamps, the ultraviolet intensity at a distance of 30cm from the perimeter of the device should not exceed 5µW/cm2.

6.13 Condensation and condensate removal During the condensation and condensate drainage tests, the air conditioner must meet the following requirements.

a) It should have the ability to drain condensate, and there should be no water overflowing or blowing out from any part other than the drain outlet;

b) Condensation should not drip from the outer surface of the air conditioner, and the indoor air supply should not contain water droplets;

c) There should be no condensation buildup on live parts.

6.14 Noise

6.14.1 The measured noise level of a compressor-type air conditioner shall not exceed the declared value by 3 dB(A) and shall not exceed the limits specified in Table 7.

6.14.2 The measured noise level of a chilled water air conditioner shall not exceed the declared value by 3 dB(A) and shall not exceed the limits specified in Table 7.

6.14.3 For dual-source air conditioners, under the operating conditions specified in the supplier and user agreement, the measured noise levels should not exceed the stated values. 3dB(A).

6.15 Vibration The measured vibration amplitude of the air conditioner should not exceed 15µm.

6.16 Standby Power For air conditioners with a standby mode, the measured standby power should not exceed 110% of the declared value.

6.17 Electric heating power If the air conditioner is equipped with electric heating, its measured power consumption should be within 90% to 105% of the stated value. (Positive temperature coefficient type) The lower limit of (PTC) heating elements is not subject to this limit.

6.18 Humidification capacity If the air conditioner is equipped with a humidifier, its measured humidification capacity should not be less than 95% of the stated value.

Note. Humidification capacity is rounded to one decimal place and the unit is kilograms per hour (kg/h).

6.19 Water-side pressure loss For water-cooled air conditioners and chilled water air conditioners, the measured value of water-side pressure loss should not exceed 115% of the stated value.

6.20 Safety Requirements

6.20.1 The electrical strength (cold state), leakage current (cold state), grounding, and protection against electric shock of the air conditioner shall comply with the provisions of GB 25130.

6.20.2 The maximum operating current of the air conditioner shall not exceed 115% of the maximum operating current specified in the product.

Note. Maximum operating current refers to the maximum operating current that the air conditioner can achieve when operating under the most severe working conditions required by the manufacturer.

6.21 Weather resistance

6.21.1 After the salt spray test, the area of each rust spot or rust mark on the electroplated metal coating of the air conditioner parts should not exceed 1 mm^2, and the area per 100 cm^2 should not exceed 1 mm^2. The plating layer on the test piece should not have more than 2 rust spots or rust marks, and there should be no rust spots or rust marks when the area is less than 100cm2.

6.21.2 The coating of the air conditioner parts shall be firm, and after the coating adhesion test, the coating adhesion shall meet the requirements of GB/T 9286-2021. The standard is Level 2 or better.

6.22.1 Strength and Sealing Performance

6.22.1.1 When conducting the airtightness test according to 7.25.1.1, there should be no leaks in any part of the air conditioning system.

6.22.1.2 When conducting the pressure test according to 7.25.1.2, there should be no abnormal deformation or deformation at any pipe components and connections in the water system of the water-cooled air conditioner. leakage.

6.22.2 Nominal Cooling Performance

6.22.2.1 The measured nominal cooling capacity of an air conditioner shall not be less than 95% of the declared value.

6.22.2.2 The measured nominal cooling power consumption of an air conditioner should not exceed 110% of the stated value.

6.22.2.3 The measured energy efficiency ratio of the air conditioner shall not be less than the limit specified in Table 8, and shall not be less than 95% of the declared value.

6.22.3 Nominal heating performance

6.22.3.1 The measured nominal heating capacity of an air conditioner shall not be less than 95% of the declared value.

6.22.3.2 The measured nominal heating power consumption of an air conditioner should not exceed 110% of the declared value.

6.22.3.3 The measured coefficient of performance of the air conditioner shall not be less than the limit specified in Table 8, and shall not be less than 95% of the stated value.

6.22.4 Maximum operating cooling The air conditioner should operate normally during the maximum cooling test, with no damage to any components, and should meet the following requirements.

a) The overload protector of the air conditioner should not trip within the previous hour;

b) Within the following 1 hour. the overload protector is allowed to trip within 5 minutes of startup, but after reset (automatic reset overload protector) The device should be able to reset within 30 minutes; for manually reset overload protectors, a forced reset should be performed after 10 minutes. The air conditioner should be able to reconnect. Continue running for 1 hour.

6.22.5 Maximum operating heating capacity During the maximum heating test, the air conditioner should meet the same requirements as during the maximum cooling test.

6.22.6 Low-temperature refrigeration operation When the air conditioner is operating in low-temperature cooling mode, it must meet the following requirements.

a) When tested according to 7.25.6a), the safety protection devices of the air conditioner should not activate (except for the automatic reset protection device for antifreeze). Furthermore, the area of frost condensing on the windward surface of the evaporator should not exceed 50% of the windward area of the evaporator;

Note. If the area of frost is not easily visible to the naked eye, it can be judged by the airflow (the airflow decrease should not exceed 25% of the initial airflow).

b) When the test is conducted according to 7.25.6b), no water should drip or blow out from the indoor unit during the last 5 minutes of operation of the air conditioner.

6.22.7 Heating and Defrosting For air-cooled heat pump air conditioners, the following requirements must be met during the heating and defrosting test.

a) Safety protection components should not activate, causing the air conditioner to stop operating;

b) Defrosting should be automatic, function normally, and be thorough; defrosting water should be able to drain normally during defrosting.

6.23 Special requirements for chilled water type air conditioners

6.23.1 Coil pressure resistance and sealing performance During the coil pressure resistance and sealing test, the air conditioning coil should not leak.

6.23.2 Nominal cooling capacity and nominal heating capacity performance test The actual measured nominal cooling capacity and nominal heating capacity of an air conditioner should not be less than 95% of the stated value.

6.23.3 Input Power The actual input power of an air conditioner should not exceed 110% of its declared value.

7.1 Test Conditions

7.1.1 Unless otherwise specified, the air conditioner shall be tested at the rated frequency and rated voltage specified on the nameplate, except when the air conditioner is started or Apart from load variations during shutdown, the allowable tolerance for the test power supply voltage should not exceed ±2%, and the allowable tolerance for the frequency should not exceed ±1%.

7.1.2 The instruments and meters used for testing shall be verified or calibrated by the metrology and inspection department and shall be within the applicable validity period.

7.1.3 When testing an air conditioner, the type and accuracy of the instruments and meters used for the test shall meet the requirements of Table 9.

7.2 Installation

7.2.1 The air conditioner under test shall be installed in the test room in accordance with the manufacturer's installation instructions and the accessories provided. The test shall be conducted at each manufacturer's... The installation requires connecting all auxiliary components (including air inlet louvers, ducts, pipes, and accessories).

7.2.2 The connecting pipes between the indoor and outdoor units of a split-type air conditioner shall comply with the following regulations.

a) Air conditioners with a nominal cooling capacity of 14000W or less. 5m;

b) Air conditioners with a nominal cooling capacity greater than 14000W. 7.5m;

c) If the total pipe length provided by the manufacturer exceeds the above specifications, the test shall be conducted according to the pipe length provided by the manufacturer. Connecting pipes are located outdoors. The length of the section should not be less than 3m, and the insulation and installation requirements for the indoor section should be in accordance with the product instruction manual.

7.3 Data Processing

7.3.1 When performing performance calculations for air conditioners, the actual power consumption should be corrected to a zero static pressure state, and the indoor power consumption of the air conditioner should be included in the calculation. The power of the fan should be corrected and calculated according to the method specified in Appendix B of GB/T 18836-2017.

7.3.2 During the test, the measurement and handling of the dehumidifier's air volume, external static pressure, and internal static pressure difference shall be in accordance with GB/T 17758-2023. It will proceed as scheduled.

7.3.3 During the test, the allowable deviations of each operating condition parameter shall comply with the provisions of Table 10.

7.4 Appearance The appearance of the air conditioner was inspected visually.

7.5 Trial Run Test The cooling-only air conditioner was powered on and tested in cooling mode; the heat pump air conditioner was powered on and tested in both cooling and heating modes. The chilled water air conditioner was powered on and put into trial operation in cooling mode.

7.6 Airflow Test Under the nominal cooling or nominal cooling supply conditions specified in Table 1 or Table 2 in the air supply mode, according to Appendix A of GB/T 17758-2023... The test was conducted using a specific method. During the test, the fan speed, guide grille, and other settings were adjusted to the maximum airflow level while meeting the manufacturer's requirements. The air volume measured during the test should be converted to standard air conditions.

7.7 Cross-sectional wind speed uniformity test The test shall be conducted in accordance with the method specified in GB/T 14294.

7.8 Box Deformation Rate Test The test shall be conducted according to the method specified in JB/T 15556.

7.9 Air Leakage Rate Test of Enclosure

7.9.1 The selection of the test pressure should be determined according to the location of the fan in the air conditioner, as described below.

a) Air conditioners with only a negative pressure section. tested at a standard air pressure of 1000Pa;

b) Air conditioners with only a positive pressure section. tested at a standard air pressure of 1000Pa;

c) Air conditioners with both positive and negative pressure sections. can be tested at a positive pressure of 1000Pa under standard air conditions, or the negative pressure section can be tested according to standard air conditions. The negative pressure section is 1000Pa, and the positive pressure section is based on the standard positive pressure of 1000Pa in the air condition.