MCAC-VTSM-2011-02 R410a DC Inverter Three Pipe Heat Recovery V4 Plus 50Hz General Information 1 Part 1 General Information 1. MDV Product Development History ............................... 2 2. DC Inverter V4+ Heat Recovery Introduction................ 2 3. Model lineup .................................................................. 10 4. Outdoor Unit Combination ........................................... 11 5. Capacity Range of Indoor Units . ................................. 12 6. Indoor Units Apperance ................................................ 13 7. Nomenclature ................................................................ 15
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Part 1 R410A Three Pipe Heat Recovery V4+ Genaral Information 380~415V,50Hz,3N (Combinable)
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MCAC-VTSM-2011-02 R410a DC Inverter Three Pipe Heat Recovery V4 Plus 50Hz
General Information 1
Part 1 General Information
1. MDV Product Development History ............................... 2
2. DC Inverter V4+ Heat Recovery Introduction ................ 2
3. Model lineup .................................................................. 10
4. Outdoor Unit Combination ........................................... 11
5. Capacity Range of Indoor Units . ................................. 12
6. Indoor Units Apperance ................................................ 13
Optimized Heat-exchanger structure and material by CFD simulation and in part load V4+ outdoor unit
owns 100% exchanger using ratio. By adoption of Pressure Sensor, EXV, and DC fan motor, V4+ has an
obvious improvement on efficiency than previous products.
2.4 More flexible design
2.3.1 External static pressure enhanced up to 81.8Pa and air volume increase 10%.
Applied high static pressure propeller fan and the optimum fan guard for high external static pressure, to
respond to a range of various installation environments.
Midea now offers up to 81.8Pa (10 mm H2O) external static pressure specification as an option*, a standard
20Pa just needs On-site adjustment) to meet the requirements of veranda installation.
* Customization is required.
MCAC-VTSM-2011-02 R410a DC Inverter Three Pipe Heat Recovery V4 Plus 50Hz
General Information 5
2.3.2 More options of Indoor units and high capacity connection
Lineup of heat recovery types is 8 to 30 HP. Indoor units consist of 15 types with a total of 106 models (not
including Outdoor Air Processing Units), capacity ranges from 1.8kW to 28kW. A maximum 130% indoor unit’s
connective ratio is allowed for all outdoor unit capacities. This wide selection of models makes it possible to build a
system that suits the customer’s requirements.
2.5 High Comfort
2.4.1 Optional outdoor units Silent Mode control
Night silent operation will be activated X (6, 8) hours after the peak temperature during daytime, and it will get
back to normal operation after Y (8,10,12) hours. To run in low speed, low noise, min. 46.8dB (A)
MCAC-VTSM-2011-02 R410a DC Inverter Three Pipe Heat Recovery V4 Plus 50Hz
General Information 6
2.4.2 More Options for outdoor units
High static pressure mode, 0 static pressure mode (default), silence mode in night mode, silence mode,
super silence mode, and capacity priority mode
2.4.3 Optimized fan pass design, Enhanced outlet static pressure technology
Increase the static pressure and decrease the loss of pressure. Decrease the input and decrease the noise
level.
New designed fan outlet grill
New designed fan impeller Conventional Fan impeller
2.6 High Reliability
2.5.1 Dynamic gas balance technology
Dynamic vector balance tech., no need to install gas balance pipe:
• High-precision pressure sensor monitors the system pressure on time and transfers the data to master unit
• Master unit sends the pressure date to every unit and make sure each outdoor unit in balance situation.
2.5.2 High efficiency oil balance technology
2.10.1 Oil balance pipes set among the modules, and individual oil balance vector control ensures oil
distribution among the modules to compressor smooth and reliable running. When one compressor’s oil is
overfull, oil balance pipes and outlet pipes both send the oil to system, and then system in average
distributes the oil to the other compressors.
Oil balance diagram:
MCAC-VTSM-2011-02 R410a DC Inverter Three Pipe Heat Recovery V4 Plus 50Hz
General Information 7
Adopts high efficient centrifugal-type oil separator, which separate the oil from discharged refrigerant with up to 99% effect to make all the lubricant discharged from compressor can be returned in time.
• New designed low pressure liquid receiver with high efficiency of oil-return effect.