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All DC Inverter Multi VRF

In 2012, Gree highly promoted GMV5 All DC Inverter Multi VRF

New breakthrough in comfort ability, intelligent control and design.

Eight prominent advantages

More powerful product series

More excellent energy-saving effect

More comfortable air quality

More reliable performance

More convenient project installation

Safer operation

Smarter network control

More intelligent management

More power product series

More power product series

combination ~ HP HP 8

9

0

1

2

3

0

1

2

1

2

3

2

3

4

1

2

3

4

5

6

1

2

3

6

7

8

1 8 64

All DC Inverter Multi VRF

64HP big capacity

4 . Module 50~64HP

1. Module 8~16HP 2 . Module 18~32HP

3 . Module 34~48HP

4 modules 50~64HP

2 Modules 18~32HP 1 Module 8~16HP

3 Module 34~48HP

8HP

64HP

64 HP

64HP Wide Capacity Range

Max Capacity

Ultra-low noise cassette

4-way cassette

Floor ceiling

Fresh air IDU

One-way cassette

High ESP duct type

Wall mounted

Console

Low static pressure Duct Ultra-low noise duct

Dual heat-source duct

11 kinds of indoor units for various places.







Safer operation





System energy efficiency

Exceed national grade 1 energy efficiency standard; energy-saving up to 59%

GMV5 National grade 1

3.6 3.6 3.55 3.55 3.55

5.72 5.7 5.55 5.5 5.2

8HP 10HP 12HP 14HP 16HP

5.72

High-efficiency DC inverter compressor

64HP

GMV5 torque control

DC inverter compressor control technology

Current of compressor（A）

Ou

tpu

t torq

ue

（Nt.m）

GMV5 torque control

traditional torque control

Traditional torque control

Max. output

Moment is not enough

I

T T

I

DC inverter fan control technology

Before Now

Adopt DC inverter motor to realize 5Hz~65Hz stepless speed adjustment.

Compared with common DC inverter motor, operation current and motor input

power are much lower, while efficiency is improved greatly.

Efficiency is improved greatly

DC Inverter Fan Control Technology

GMV5 DC inverter

fan motor

Capacity

outp

ut o

f inverte

r com

pre

ssor

Inverter fan’s frequency

traditional notch adjustment

VS

Low efficiency

Big noise

Bad reliability

65Hz

6

5

7

3

···

2

1

4

traditional notch adjustment

GMV5 stepless speed adjustment

GMV5 stepless speed adjustment

High efficiency

Low noise

Good reliability

Dynamic characteristic

Efficiency is increased above 30% by using DC brushless motor

Stable operation; low noise；

Lowest speed can reach 100r/min.

Indoor unit adopts DC brushless motor

DC brushless motor

Asynchronous motor

Intelligent defrosting mode

More comfortable!

Specification is promoted!

Traditional defrosting mode

Less comfortable! Low

energy efficiency!

—— timer mode

Intelligent defrosting technology

defrosting

Hea

ting

ca

pa

city

Time 8min 8min 8min 45min 45min

Heating

He

atin

g

ca

pa

city

heating

defrosting

When there’s frost detected by system,

intelligent defrosting will be

started up automatically

When frost is over, the system

Will stop defrosting automatically

defrosting defrosting

Fan linkage control technology

Unbalanced fan operation method; low

energy efficiency

Air volume is much even; high

energy efficiency

Normal multi VRF GMV5 multi VRF

Save up to 15%

Save up to 20%

ordinary mode energy-saving mode1 energy-saving mode2

operating mode

Opera

ting c

ost

Energy-saving operation control

No need to connect remote control monitor system. During electricity limiting period,

the unit provided two kinds of energy-saving mode.







Safer operation





Comfortable temperature

After reaching to set temperature, compressor will adjust the output

according to indoor load to let indoor temperature stay at relative stable

status and let you feel more comfortable.

Working principle of

common air conditioner Working principle of

Inverter air conditioner

Cold

Hot

quick start Small temp

fluctuations

The compressor Adjust the

speed according IDU load temp

Set

temp

start Cooling operation Operating time

35℃ 26℃ 26℃ 26℃

When using traditional air conditioner for cooling, temperature at difference

places in the room is the same, which let you feel uncomfortable the moment you

enter the room.

Adjust indoor temperature automatically

35℃ 28℃ 27℃ 26℃

Adjust indoor temperature automatically

Gree inverter air conditioner can adjust indoor temperature automatically

according to ambient temperature for comfortable feeling.

Quiet function for night; 9 modes for selection

Low noise control technology

Operate at rated load Low load operation; low noise

Day—outdoor

temperature is high

Night—operate at

low load

45dB（A）

capacity %

load %

operating sound dB(A)

Operation

noise dB(A)

Quiet control technology

Has set compulsory quiet mode

45dB（A） Compulsory quiet function, as low as

Drying and reheating function

When air conditioner operates under drying mode in wet seasons, air

outlet temperature can be as low as below 10℃. At that time, after starting

up the electric heater, air outlet temperature can be increased to more than

10℃.

Drying operation

Air outlet temperature ℃

Drying and

reheating

9 15

Fresh outdoor air flows through fresh indoor unit’s heat exchanger, and comes

into indoor rooms after being treated into proper status. Temperature will reached

to design requirement, while it won’t affect air quality.

Fresh Function

Outdoor

fresh air

Air duct duct pipe Fresh air

indoor unit

Reminding function for cleaning filter

Please clean

1 days 2 days 3 days …days 100 days

Indoor unit is with reminding function for cleaning filter. According to

different operation environments, you can set different clean period.







Safer operation





Refrigeration oil circulating control technology—two-stage oil-

dispersing control technology

First-class oil separator

Adopt filter expansion valve

Separating efficiency

reaches to 98%

Total oil-dispersing

efficiency

Patent（201120003910.7）

Second-class oil separator

Separating the remaining 2%

refrigeration oil;

Separating efficiency

reaches to 95%

During oil-retuning operation, pressure is taken into

consideration, which can improve the service life of compressor.

Refrigeration oil circulating control technology—oil return

control technology

Before oil-retuning

During oil-returning… Freezing oil

com

pre

ssor

Low pressure sensor

Indoor heat exchanger

EXV

Indoor heat exchanger High pressure sensor

High pressure sensor Outdoor heat exchanger

Indoor heat exchanger

EXV

low pressure sensor

com

pre

ssor

Pressure control

Pressure control

Judge operation status of module and compressor intelligently, calculate oil-

storage volume of compressor and adjust operation status of compressor to

realize the oil balance among modules.

During oil-balancing

Refrigeration oil circulating control technology—module oil-balancing

control technology

……

Oil separator Oil separator

Operation module Operation module

Refrigeration oil circulating control technology—compressor oil-

balancing control technology

Control the oil level in oil

pool and distribute the

redundant oil in compressor

to other compressors

Discharge pipe

oil-balancing tube

Suction pipe

Lowest oil level

Oil-balancing Abundant oil

Due to the oil-storaging technology of compressor, the lowest oil level for operating

the compressor can be controlled by judging parameters

Refrigeration oil circulating control technology— oil- storage control

technology

Outdoor heat

exchanger

Electronic

expansion

valve

Indoor heat

exchanger

Controlling ……

Compressor

Adopt high-efficiency heat exchange loop to realize first class

subcooling control for heat exchanger. Degree of subcooling can reached

11℃.

Subcooling technology—first class subcooling technology

before now

High temp:≥76℃

Mid temp：65℃

Low temp：50℃

Normal subcooling：44℃

GMV 5 subcooling：39℃

Realize second times subcooling for 9℃ by adopting overcooled loop

Subcooling technology—second class subcooling control

Overcooled loop

Indoor unit

Outdoor unit







Safer operation





Super long piping, no space-limiting

●Max total piping length—1000m（3280ft）

●Max actual piping length—165m （540ft）

●Max height difference between ODU and

IDU—90m（300ft）

●Max piping length from first branch to the

farthest IDU—40m（130ft）

0、30、50、80Pa

Note: The ex-factory defaulted static pressure is 0Pa

Outdoors ：0Pa

Mechanical floor：

4 kinds of static pressure optional

80Pa

Super high static pressure, no installation position limiting

0、30、50、80Pa

For complicated construction

structure requirement

Super large capacity, no construction area limiting

Application combination of module can reach to 4 modules at the most;

selectivity of 180kW capacity is much big, which can satisfy all kinds

construction design requirement.

Super long distance communication, no distance limiting

MAX 1000m MAX 1500m

Common multi VRF

The debugging software can be connected into the outdoor unit or

the indoor unit via Gree USB data converter.

Connected to ODU Connected to IDU USB data converter

Portable computer

The debugging is simple and convenient

CAN bus line

Intelligent debugging for saving time

functions

abnormal

The wiring is simple and convenient

Normal GMV

a

b a

b a

b a

b

normal

Maintenance window

Maintenance window







Safer operation



Safer operation

Safer operation

Distinguish emergent shutdown and insufficient power supply

Distinguish insufficient power supply

When the power is supplied by dynamotor

temporarily, the ODU will send insufficient power

supply signal to IDU. At that time, air conditioning is

only available for VIP rooms.

Emergent shutdown

ODU can be connected

to fire alarm linkage signal,

which can make the unit shut

down in emergency

Insufficient

power supply

stop

Normal

running VIP Room

Operation in emergency

【Basic modules in emergency】(18HP-64HP)

When one of the basic modules is in malfunction, other basic modules can still

operate in emergency, which greatly reduces the affect of malfunction.

malfunction

The module is operating

in emergency ……


【 Compressor in emergency】(8HP-16HP)

When one of the compressors is in malfunction, other compressors and

systems in this basic module can still operate in emergency.

malfunction

The compressor is operating

in emergency ……

【 Fan motor in emergency】 (Double fan motors）

Some basic modules are designed with two fan motors. Gree unique control

logic and optimized system design can make sure that the other fan motor can run in

emergency when there is malfunction in one fan motor.


malfunction

The fan motor is operating

in emergency ……

16HP 8HP 12HP 16HP 8HP 12HP 16HP 8HP

12HP

ODU modules “installed without sequence”

Do not distinguish master unit and

slave unit

Do not distinguish big and small

Do not distinguish position

36HP is taken for example 8HP 12HP 16HP

8HP 16HP 12HP

8HP 16HP 12HP

ODU operates circularly

Operate in modules, operate evenly and prolong lifespan

1 2 3

0:00~8:00 8:00~16:00 16:00~24:00

Wide operation range in high temp or low temp

Solve heat island problem of concentrated installation of ODU

55℃ -10℃

27℃ -20℃

Solve high temp problem of ODU in built-in

installation or concentrated installation







Safer operation


More intelligent management More intelligent management


Gate control function

The unit works when

inserting the card and stops

when pulling out the card.

When the unit stops, the unit

records the running status and

stops running; when inserting

the card, the unit will run

according to the memorized

status, in stand-by status or in

the running mode before

pulling out the card.

Meeting room Management room

One indoor unit with several control points

The indoor unit can be connected to several wired controllers, which can achieve controlling one indoor unit in different control point.

ON OFF

Several indoor units can be connected to one wired controller to realize

centralized control, maximum 16 indoor units

Central control of several indoor units

32℃ 32℃

32℃ 32℃ 26℃ 26℃

26℃ 26℃

Controlled by remote controller and wired controller at the same time

Remote controller is convenient and wired controller is with more functions.

Gree unique control logic make it possible to control one IDU with remote

controller and wired controller at the same time.

Turn off the air con by

remote controller; no

need to get up.







Safer operation





The first to apply CAN network control technology in the industry

Specification Normal GMV network GMV5 CAN network

High reliability

Software verification Hardware verification, high reliability

One of the indoor unit or outdoor unit is

in communication malfunction, which

may lead to crash of the whole network.

The malfunction IDU or ODU will exit

communication automatically, which will not affect

the whole network.

High

communicatio

n efficiency

Master-slave communication method,

which will affect the response efficiency

of slave unit; the utilization of bus line is

low

Multi master units communication way, the

information of all units in the network will be fed

back; the utilization of bus line is high

Communication efficiency is low, about

10Kbps

IDU and ODU communication efficiency can reach

20Kbps, which is improved by 100%; data

exchange is more quickly.

High

compatibility Single master unit network, poor

expansibility

Multi master units network, easy to extend new

equipments, such as light, ventilation equipment,

etc.

Long

communicatio

n distance

1000m 1500m

Low response speed High response speed GMV5 CAN network

Communication speed is more quickly and more accurate

Normal GMV network

Support leakage control of

other equipments

Support leakage control of

other air conditioning

equipments

Support control system of

the building

High compatibility, leakage control of the building

Connect to control of the building

Light switch

Detector of

fire hazard

Emergency button

The actual position of air con can be shown in the building, floor or room layout of the

system interface, which can realize visualized management of the air con.

More visualized operation platform

In the visualized interface of each area of the building, the running quantity, stopping

quantity and malfunction quantity, etc. of the air con in this area can be calculated.

More visualized operation platform

Show the status of

the concerned area

Total air：

Running qty：

Stopping qty：

Malfunction qty：

Malfunction:

213

180

0

33

0

ensure cancel

Independent/centralized control:

The user can manage one or several equipments.

Multi management ways of air con

Help to use and manage the air reasonably

Independent monitoring and managing for VIP customers.

GM office

Multi management ways of air con

Flexible linkage control

4 3 2 1 0 0 9 6 8 7 5 1 Year Month Week Day

Calendar management function

1 3 0 4 2 2 0 1 4 5

Overtime management

Dining management

……

Calendar management of required time and area:

• Set timer on/off

• Set mode

• Set temperature

• Shielding • ……

• Avoid waste of energy caused by forgetting turning of the air con

Calendar management function

Work noon Work overtime

breakfast lunch dinner

Work

office

dining room

meeting room

Electricity limit mode:

• Calculate the electricity consumption;

• Set the electricity consumption limit: when the electricity consumption reaches the set value,

remind or automatically control the air con to run in low electricity consumption.

Economical mode: according to the characteristics of GMV, control the output load of ODU to

keep it running in low electricity consumption.

Multi energy-saving modes

Electricity consumption

of Room 1 has reached

80%

21

24

45

78

75

42

12

32

18

5

25

48

75

41

21

32

42

14

2

15

44

87

53

21

42

4

25

52

14

22

15

63

69

1

25

48

78

52

14

56

32

78

21

24

45

78

75

42

12

32

18

5

25

54

12

45

46

78

23

17

4

21

24

45

78

75

42

12

32

18

5

服务端

Too low set temp.

Too much electricity

consumption

28℃ 27℃

Not apparent cooling effect

Analysis of electricity consumption

data

Service port

·······

Energy visualized management function: All Dc Inverter multi VRF

Service port

Set temperature too low

Energy consumption

27℃

Cooling effect is not apparent

Make out energy-saving policy and control of that policy

Energy visualized management function:

make out corresponding energy-saving

policy according to the above situation

Make out corresponding energy-saving policy according to

the following situation

Running time: screen out long-running air con

Turn on the unit too early

Turn off the unit too late: too much energy consumption

due to forgetting turning off the air con

Environment comfort: too much electricity consumption

due to improper setting of temp.

Electricity consumption/unit area electricity consumption: screen out

the air con which consumes too much electricity

Adopt B/S system design to achieve powerful Web

control function

Management function of multi buildings

Login function of multi users

Monitoring function of Internet

Multi air conditioning management way

China U.S.A

21

24

45

78

75

42

12

32

18

5

25

48

75

41

21

32

42

14

2

15

44

87

53

21

42

4

25

52

14

22

15

63

69

12

54

87

85

21

45

63

27

8

21

24

45

78

75

42

12

32

18

5

25

54

12

45

46

78

23

17

4

21

24

45

78

75

42

12

32

18

5

Calculate the electricity automatically according to running time, mode, opening angle of

electronic expansion valve, indoor ambient temperature, outdoor ambient temperature, etc.;

provide detailed bill, running report and analysis report.

Auto calculation of electricity

User A

User B

User C

Electricity fee

User A User B User C

Calculate the electricity fee of each user reasonably to avoid disputes

Calculate the electricity fee of each user reasonably

Thank you!

all dc inverter multi vrf - greeonline.com · logic and optimized system design can make sure that...

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