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Working Principle
The VRF air conditioners, also known as "one-to-many," is a type of system where one outdoor unit is connected to several indoor units. Each indoor unit can operate independently or be controlled together. The system has an outdoor unit connected by pipes to indoor units that have components like outdoor heat exchangers, compressors, and other parts. The indoor units consist of fans and direct cooling elements. Using the pipes, the outdoor unit can supply cooling liquid to many indoor units. It controls the compressor's cooling fluid circulation and the flow into various indoor heat exchangers to meet the indoor cooling and heating needs.
The system's working principle is simple: the indoor temperature sensor controls the valve on the indoor unit's cooling pipe. By adjusting the pressure, the system can control the outdoor unit's compressor speed or change its operating mode to adjust the cooling capacity according to the load.
The multi-unit system has some key features
Significant energy savings: The system adjusts the compressor speed and refrigerant flow automatically to operate more efficiently, reducing energy consumption during lighter use and lowering overall costs.
Space-saving design: The outdoor units, usually installed on the roof, take up no extra space. With just refrigerant and water pipes, the system's layout can save on building height and costs compared to water systems.
Easy installation and reliable operation: Compared to centralized water systems, the multi-unit system has a simple setup, making it suitable for homes. With fewer components, the system runs reliably and safely.
Meeting different room requirements: The system can be arranged to meet various room needs. In some setups, while some units cool, others can heat simultaneously. In winter, the system can cool one area and heat another, reducing energy consumption and meeting diverse air conditioning needs.
| Outdoor Independent Frequency Unit | |||||||
| Model | AirTS-670AI | AirTS-730AI | AirTS-780AI | AirTS-850AI | AirTS-900AI | ||
| Power | HP | 24 | 26 | 28 | 30 | 32 | |
| Power supply | Three-phase and five-wire system 380V3N 5%~50HZ | ||||||
| *1 Rated refrigerating capacity | kW | 68.5 | 73.5 | 78.5 | 85 | 90 | |
| *2 Rated heating capacity | kW | 75 | 81.5 | 87.5 | 95 | 100 | |
| Rated power consumption | Cooling | kW | 18.6 | 19.27 | 20.95 | 22.85 | 24.65 |
| Heating | kW | 17.6 | 19.01 | 20.55 | 23.05 | 24.15 | |
| APF | 4.5 | 4.6 | 4.6 | 4.55 | 4.5 | ||
| IPLV | 8.8 | 8.7 | 8.6 | 8.55 | 8.5 | ||
| Standard circulating airflow | m³/h | 25800 | 27000 | ||||
| Machine size | L×W×H | mm | 1500×860×1690 | 1900×860×1690 | |||
| *3 Operating sound | dB(A) | 62 | 62 | 63 | 64 | 65 | |
| On-site piping size | Liquid pipe | mm | φ15.88 | φ19.05 | |||
| Air pipe | mm | φ28.58 | φ31.75 | ||||
| Weight | kg | 380 | 450 | 455 | 460 | 465 | |
| Refrigerant | name | R410A | |||||
| Self-contained filling capacity | kg | 14 | 16 | 20 | 20 | 20 | |
| Operation range | Cooling | ºC DB | -5~56ºC | ||||
| Heating | ºC DB | -20~26ºC | |||||
| *4 Maximum fuse wire current | MFA | A | 63 | 80 | 80 | 80 | 80 |
| *4 Minimum line current | MCA | A | 53.5 | 66 | 68 | 70.1 | 74 |
| 1. Nominal cooling capacity is determined according to the following conditions: Indoor temperature :27.0ºC DB/19.0ºC WB, outdoor temperature: 35.0ºC DB, equivalent pipe length: 10m, difference of height: 0m; 2. Nominal heating capacity is determined according to the following conditions: Indoor temperature: 20.0ºC DB, outdoor temperature 7.0ºC DB/6.0ºC , equivalent pipe length 10m, difference of height: 0m; 3. The noise level is tested before delivery. In the actual use, the measured noise may be different from the value specified in the table;in the quiet mode at night, noise is reduced by 5-8dB 4. Select fuses or circuit breakers according MFA, and select wiring specifications | |||||||
AirTS was established in 2005 as a technology-driven enterprise that integrates researchand development, manufacturing, sales, and technical services for energy-savingequipment. We are specialized in providing comprehensive solutions for system design, implementation, operation, and maintenance of energy-saving projects.
AirTS product line primarily consists of energy-efficient air conditioning systems specifically designed for high and large space, encompassing heating units, heating and cooling units, gas heating units, gas radiation units, VRF air conditioners, hot air curtain units, industrial HVLS fans, industrial control systems, and other products tailored for large spaces. These solutions effectively resolve diverse requirements such as heating, cooling, ventilation, humidification, dehumidification, dust removal, and
automation control in buildings ranging from 4 to 30 meters in height.
AirTS has collaborated with over 1600 well-known customers, with numerous application cases in the world's top 500 companies.
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
1. Who we are
AirTS was established in 2005 as a technology-driven enterprise that integrates research and development, manufacturing, sales, and technical services for energy-saving equipment. We are specialized in providing comprehensive solutions for system design,implementation, operation, and maintenance of energy-saving projects.
2. How to guarantee quality
Always a pre-production sample before mass production; always final Inspection before shipment;
3. What buy from us
Heating units, heating and cooling units, gas heating units, gas radiation units, VRF air conditioners, hot air curtain units, industrial HVLS fans, industrial control systems, and other products tailored for large spaces.
4. Why buy from us not from other suppliers
With 18 years' experience in the market, AirTS has became No.1 market share in China.
5. What services we can provide
Delivery Terms: FOB, CFR, EXW, CIF, Express Delivery;
Payment Currency: USD, CNY;
Payment Type: T/T, L/C, PayPal;
Language: English, Chinese
