MDV-V4:1.1 Environment friendly 1.1.1 Environmental-friendly refrigerant R410A will not destroy the ozonosphere.1.1.2 Full compliance with EU ROHS direction.

1.2 DC Variable-Speed technologyDC Inverter Smart adopts High tech brushless DC motor, Neodymium material permanent magnet of rotor, New Design for Magnet Arranging, concentrate Magnetic Lines, reduce the consuming of energy, DC Variable-Speed 25％Energy Savings Compared AC variable-speed type.

New DC Motor central winding motor owns high efficiency comparing with normal DC motor.

High tech brushless DC motor, Neodymium material permanent magnet of rotor.

Compact Design，Weight Lighten 50％New Scroll Profile for R410A

New Structure, High –performance In Middle Frequency

New Design for Magnet Arranging, concentrate Magnetic Lines.

Speed（S－1）

New DC MotorNew DC Motor

Normal DC MotorNormal DC Motor

High-High-performaperforma

ncence

20 40 60 80 100

Eff

icie

ncy

1.3 Vector Control Technology

System stepless Vector Adjust Vector Drive Technology:1. The units can adjust capacity according the ambient temperature.2. The system can be stepless adjusted with vector driving tech in the operation range from 60Hz to 180Hz; it

means the output can actually meet your requirement to make you feel more comfortable.Capacity——Frequency curveCapacity——Frequency curve::

180180

6060

2020 4040 6060 8080 10010000 Capacity (%)Capacity (%)

DC stepless vector adjustDC stepless vector adjust

AC inverter steps adjustAC inverter steps adjust

General waveGeneral wave

Smooth sine wave DC inverterSmooth sine wave DC inverter

The motor of compressor adopt 180°sine wave driving tech, ensure the current output of converter with smooth sine wave curve, Also improved motor running efficiency after testing the speed accurately.

General variable-speed motor just output saw-tooth wave, and can' test the motor speed accurately. So the efficiency is lower.

Vector drive tech make the motor lower sound levels, operate more smooth

DC

variable-speed drive D

C variable-speed drive

unitunit

FrequencyFrequency (Hz) (Hz)

1.4 High efficiencyThe efficiency of DC Inverter Smart is increased 25% compared with AC Inverter Smart at least.

1.5 Long & single piping system The max. pipe length between indoor unit and outdoor unit is 175m.

The max. height difference between indoor unit and outdoor unit is 70m.

The max. distance between the first branch to the farthest indoor unit is 40m.

The max. height difference between indoor units is 15m.

4.154.153.653.65 3.683.68 3.543.54 3.453.45

00

3.03.0

4.04.0

1.01.0

2.02.0

8HP8HP 10HP10HP 12HP12HP 14HP14HP

4.354.354.084.08

4.124.123.953.95 3.903.90

00

3.03.0

4.04.0

1.01.0

2.02.0

8HP8HP 10HP10HP 12HP12HP 14HP14HP 16HP16HP

16HP16HP

Average EER 3.69Average EER 3.69

Average COP 4.08Average COP 4.08

Cooling EERCooling EER

Heating COPHeating COP

1.6 Free combination, wide capacity range 5 basic modules, which can be freely assembled. 2HP increments of capacity range, which meets customer’s needs accurately.

Maximum capacity is 64HP, the maximum capacity in air-conditioner refrigeration industry.5 basic modules: 8HP, 10HP, 12HP, 14HP, 16HP, 2HP increments of capacity range

8-10HP 12-16HP 18-32HP 34-48HP 50-64HP

1.7 Patented design, running reliable, and oil return to the system better.1.7.1 Oil Control technology

Oil balance between modules, special oil balance vector control equipment ensured oil reasonable distribution between modules, and make sure the compressor operate more stable and reliable

Oil basin

Oil even pipe

Discharge pipe

Suction pipe

Oil balance diagram：

DC Inverter Smart adopts oil balance technology, which can balance the refrigerant lubricant distribution among different modules.

Adopts high efficient centrifugal-type oil separator, which separate the lubricant from discharge 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. Oil balance ensures sufficient refrigerant lubricant supply. Elaborately designed oil-return hole, which ensure

reliable oil-return for every compressor.1.7.2 Gas balance

DC Inverter Smart adopts unique gas balance device among compressors, which balancing the gas suction volume among different compressors.

1.8 High air volume & low noise

New designed inner hidden duct circle improve outlet air field，decrease fan noise and boost fan efficiency. The grille of fan air inlet and fan air outlet has airflow direction adjusting function, which leads to lower pressure. Adopt dual turbo fan which makes bigger airflow volume with lower noise.

Oil balance pipe IOil balance pipe I

From evaporatorFrom evaporator

Oil balanceOil balance

Enter Enter condensercondenser

Oil separatorOil separator

Oil balance pipe IIOil balance pipe II

Oil balance pipe IIIOil balance pipe III

Refrigerant flow

R

efrigerant flow

directiondirection

Refrigerant flow Refrigerant flow directiondirection

1.9 Enhanced Heat-exchangingAdopt 3-row inner-screw copper heat-exchanger, which creates higher heat transfer efficiency and powerful heating capacity especially in low ambient temperature. Outdoor heat-exchange area can be adjusted by running load. Adopts dual EXV, which achieves up to 960 steps refrigerant adjusting precision to insure precise control of refrigerant and raise system circulation efficiency.

1.10 Patented double four way valve designs.

The combination of one main and one auxiliary four way valve can control the outdoor heat exchanger and outdoor air flow independently. And according to the load adjust the heat exchange volume of outdoor unit accurately and prevent wasting the capacity in part load time.

1.11 Space saving

1.12 Simple installation and easy maintenance

1.12.1 Easy installation

The structure of the DC Inverter Smart system and the piping work are simple, thus the installation is easy. 1.12.2 Independent system

DC Inverter Smart system can be installed by stages and the owners can install their system at their convenient time. Thus the system has less installation time limit.

Installation by stages can avoid the no installment for the new project Convenient installation is realized for the rebuilt project. 1.12.3 No need special maintenance work

Simple refrigerant piping system without any complicated maintenance work

Compared with the water-cooled system:

Without water-cooled system, there is no need to clean the water pipe No full-time person is needed to do the maintenance work Module construction enables the system to be free from large-scale repair regularly

1.13 Flexible control system

Individual control, group control, network control are all available.

The Midea 3rd generation network control system can realize intelligent management to the A/C system, it adopts Lonworks protocol and can be connected to the BMS:

1 computer can control max 16 indoor CCM and monitor 16 outdoor CCM;

1 indoor CCM can max control 64 indoor units;

1 outdoor CCM can max monitor 32 outdoor units;

So 1 Computer can control max 1024 indoor units and monitor 512 outdoor units.

1.14 Healthy and more comfortable

1.14.1 Accurate temperature control

Adopting high speed DSP processing chip and precise control to ensure small temperature fluctuation and feel more comfortable. Heat transfer efficiency is high in refrigerant system，inverter technology and intellectual control ensure fast cooling and heating . Temperature fluctuation is as small as ±0.5 .℃

1.14.2 Wide operating range

DC Inverter Smart is cooling and heating type，system operating range is broaden by use of digital technology. The lowest heating temperature can reach -15 °C. The highest cooling temperature can reach 48 °C.

24 ℃24 ℃

-15 ℃-15 ℃

48℃48℃

-5℃-5℃

Low-ambient cooling functionLow-ambient cooling function

48℃-15℃

Heating range: -15Heating range: -15°C～～2424°C Cooling range: -5Cooling range: -5°C～～4848°C