All DC Inverter Technology
All DC Inverter Technology to Improve Compression Efficiency
All DC inverter compressor and high-performance high pressure chamber are adopted to reduce loss of overheat and improve compression efficiency from direct intake. Compared with low pressure chamber, the compression efficiency is improved. High-efficiency permasyn motor is adopted to provide better performance than traditional DC inverter compressor.
All DC Inverter Compressor
All DC inverter compressor is used in this system. It can directly intake gas to reduce loss of overheat and improve efficiency.
High-efficiency permasyn motor is adopted to provide better performance than traditional DC inverter compressor.
Technology of Maximum Torque Control with Minimum Current
Reducing energy loss caused by device winding so as to realize higher efficiency.
180 Sine Wave DC Speed Varying Technology
Satisfying various places demands for different temperature and is able to save a great deal of electricity and provide users with utmost comfort at the same time.
Low-frequency Torque Control
Directly control motor torque, through which fan motor can run a low speed. Users feel more comfortable while requirement of the system are met.
Sensorless DC Inverter Fan Motor
- Stepless speed regulation ranges from 5Hz to 65Hz compared with traditional inverter motors, the operation is more energy-saving.
- Sensorless control technology guarantees lower noise, less vibration and steadier operation.
88HP Max Capacity-The Largest Free Combination
Max capacity of single outdoor unit reaches 22HP and max combination capacity is even up to 88HP, in an industry leading level.
With compact design, the outdoor unit can be carried to the roof of building through elevator, with no need of crane. It is easier for delivery and installation.
Non-polar CAN Technology to Improve Communication Efficiency
The non-polar CAN communication technology is applied to support flexible wiring installation, greatly reducing construction difficulties.
Wide Range of Voltage and Operation Condition
- Working voltage range of VMV5 system has been improve to 320V~460V which surpasses the national standard of 340V~420V. For places with unsteady voltage, this system can be sunning well.
- Outdoor operation temperature range is improved to -5C~52C in cooling and -20C~24C in heating.
Wider Application Location
VMV5 can realize a combination of 4 outdoor unit modules connecting with as many as 80 indoor units. It’s especially applicable for business building or hotels.
Refrigerant Storage and Distribution
The VMV5 system is designed without liquid receiver and the excess refrigerant is stored in the piping, which can minimize the refrigerant charging volume and enhance the control accuracy of refrigerant.
High Efficiency and More Energy Saving
Thanks to the advanced all DC inverter technology, optimized system design and accurate intelligent control technology, EER of VMV5 is up to 4.73 while COP is up to 5.56.
New Generation of Energy-saving Operation Control Technology with Energy Saving Up to 20%
The VMV5 system has 2 modes for energy saving, which can be chosen to meet different electricity demands.
In auto energy-saving mode, the system will self-adjust parameters according to the operation status, thus to lower the cost of electricity. Up to 15% of energy can be saved.
In compulsory energy-saving mode, the system will limit power output forcibly. Up to 20% of energy can be saved
Intelligent Defrosting Control
During the healing process, the frost status of the unit will be different after affecting by factors of outdoor ambient temperature, load status and operation time. Through real-time of operation parameters of the system.
Accurate Intelligent Allocation Technology of Capacity and Output of Optimal Portion to Ensure Highest Efficiency
- When total load demands more than 75% of a running system’s capacity, one more unit will automatically start;
- When total load demands less than 40% of a running system’s capacity, one more unit automatically shut down;
- Therefore, each unit shares 40%-75% of the total load.
- Experiments show that an air conditioner costs the least energy when it’s operating within 40%-75% of its capacity.
Output of Optimal Portion to Ensure Highest Efficiency
The best heating or cooling performance can be realized in the most energy-saving way. DC inverter compressor and DC inverter fan will also be operating in this way to ensure high efficiency.
Sub-cooling Control Technology to Ensure Optimal Cooling and Heating
- Heat exchange loop can control the first subcooling process of heat exchanger. Subcooling degree can reach 11℃.
- Subcooling loop can realize 9 ℃ second subcooling to guarantee cooling and heating performance.
Temperature Controlled by Wired Controller with Higher Efficiency and More Energy Saving
Through setting temperature lower limit cooling or dry mode, and setting temperature upper limit in heating. 3D heating or heat supply mode, the system is able to operate in a smaller temperature range so as to achieve energy saving.
Comfortable Design for a Better Life
The VMV5 system has a wide range of working conditions. Whether it’s in a cool winter or a hot summer, normal operation is guaranteed with the least noise, making users feel more comfortable.
Outdoor Unit Quiet Mode and Quiet Control
- Quiet at night
The system can record the highest outdoor temperature. At night, the system will automatically turn to quiet mode. There are 9 quiet modes which can be set according to actual needs.
- Quiet in compulsion
The system can also be set in this mode to ensure low noise as long as it is operating. Noise is as low as 45dB(A).
- Quiet Control
- Optimized Bossing Design
- Aerodynamics 3D Axial Fan
Quite Indoor Unit
The indoor unit of the VMV5 system also adopts DC inverter motors to realize stepless regulation. According to indoor temperature or people’s need.
Fast Start-up Heating
DC Compressor is first started to avoid too much electric current. Inverter compressor can operate in high frequency once starts up, so as to produce more heat.
7 Speeds Indoor Fan
Indoor fan speed can be set in 7 levels by wired controller. They are auto, low speed, medium-low speed, medium speed, medium-high speed, high speed and auto
Excellent Performance Ensured by Advanced Technology
Two-stage Oil Seperation Control Technology (Patended)
First-stage oil separator adopts a filtration expansion valve with separation efficiency of 98%. Second-stage oil separator will separate the remained 2% refrigerant oil with separation efficiency of 95%. General oil separation efficiency 99.9%
Oil Return Control Technology
- New Oil Return Control
- Specialized Compressor Oil Storage Control
Oil Balance Control Technology
- Oil Balance between each Module
- Oil Balance between each Compressor
Multi Electronic Expansion Valves Control
Outdoor electronic expansion valve not only has throttling effect, but also control refrigerant flow. The system adopts multi electronic expansion valves control with total 960 grades regulated by two electronic expansion valves, so as to regulate refrigerant flow precisely and ensures reliable operation of system.
Smaller Impact to Power Grid
The start-up frequency of inverter compressor is gradually increased from OHz to the appointed operation frequency. The start-up current of compressor rotor is decreased by reducing load torque, hence impact to power grid during start-up is reduced and electromagnetic impact to compressor is reduced too.
Modules Rotation Operating to Maximize Lifespan
Module 8h rotation operating
The operating priority sequence of the outdoor unit modules will be changed without restart when the system accumulatively operates for 8 hours, which can maximize the service life of the system.
Highly anticorrosive Golden Fins
The primary material of Golden Fin is AI-MN(Alu-mium-Manganese) anti-rust, which is coated with the Golden Protection Layer, the anti-corrosice performance in salt-spray testing is 200-300% higher than normal Blue-Fin.
Emergency Auto-Off Control
The outdoor unit can be linked with a fire alarm signal. In case of emergency, unit can automatically turn off to avoid risk or further loss.
Lower Power Consumption Operation Mode
As for the area with power consumption limited time period, the maximum power consumption can be set for the operation. Basing on the power consumption of unit and user’s requirement, power consumption limitation can be set according to 100%, 90%, 80% of the capacity of complete
Electricity Shortage Identification
The outdoor unit can receive a power signal of electricity shortage. In some places like first-class hotels. If diesel generator is used temporarily for providing electricity, outdoor unit will send the electricity shortage signal to indoor unit.
Excellent Emergency Operation Function to Ensure Reliable Operation
- Emergency Function
- Emergency Operation of Compressor
- Emergency Operation of Fan
SRL (Self-reaction Load) Self-adaptive Control
SRL (Self-reaction Load) can intelligently detect and control system parameters and automatically adapted to indoor cold/heat load requirement to reduce unit’s power and improve the energy efficiency
ODU High Static Pressure Design
System has 4 levels of static pressure that can be set up to 82Pa pressure can be set for an outdoor unit.
100m Pipe Design for Flexible Installation
- Max total pipe length reches 1000m
- Actual pipe length between the outdoor unit and the fasthest indoor unit: 165m
Engineering Debugging for Convenient Construction
1) VMV5 has five auto debugging features:
- Automatic allocation of IDU and ODU addresses
- Automatic detection of IDU and ODU quantity
- Automatic detection of errors
- Automatic start-up of debugging
- Real-time judgment of pipe errors
2) Deversified debugging methods for satisfying different requirement and improve debugging efficiency
Auto-refrigerant Recovery for Easy Maintenance
When auto refrogerant recovery function is set and cut-off valve of liquid pipe is closed during maintenance, the system will automatically operate compressor, EXV solenoid valve and fan.
Inspection Window for Convenience Checking
Inspection window is available for quick checking of system operation status. No need to open panel for checking which will be more time-saving and easier for maintenance.
Common wire can meet the communication demand with no need of specialized communication wire.
Auto Addressing of Outdoor and Indoor Unit
CAN network is adopted to achieve auto addressing of outdoor and indoor unit. It can allocate IDU and ODU addresses and detect IDU and ODU quantity which improves construction efficiency.
Professional Hotel Function
Cooling or heating mode can be deactivated during a certain season to avoid affecting unit normal operation due to mode conflict.
Key-card Control for Hotel Management
The unit can be turned on or off by inserting or removing the key-card. When the key-card is removed, the system can remember all the setting and stop operation. When the key-card is insrted back, the system will be under standby mode operate according to the status before removing key-card.