Midea V4 Plus S Series Manuale utente

Midea Commercial Air Conditioner

R410A All DC Inverter VRF V4 Plus S Series

220V~60Hz

Technical Service Manual

001 Part 1 General Information

011 Part 2 Selection Procedure

017 Part 3 Specifications & Performances

080 Part 4 Installation

128Part 5 Troubleshooting

Contents

MCAC-VTSM-2015-09 R410AAll DC Inverter V4+S Series 60Hz

General Information 1

Part 1 General Information

1. Features..........................................................................................................2

2. Outdoor units.................................................................................................7

3. Indoor units lineup.........................................................................................9

4. Nomenclature...............................................................................................10

R410AAll DC Inverter V4+S Series 60Hz MCAC-VTSM-2015-09

2 General Information

1. Features

1.1 Energy saving

V4+S Series achieves the industry's top class energy efficiency in cooling and heating by utilizing all DC

inverter compressors, all DC fan motors, and high efficiency heat exchanger.

1.1.2 All DC inverter compressors

The DC inverter compressor adopts innovative design and numerous high performance key parts which can

reduce power consumption by 25%.

1.1.3 All DC fan motors

The system controls the speed of the fan motor according to the system pressure and system load achieving

the minimum power consumption.

EER

COP

4.29

3.97

3.81

3.54

3.4

3.38

4.39

4.17

4.02

3.91

3.89

15 steps vector control

Low

High

More compact, weight,

reduced by 50%

Specially designed

scroll profile for R410A

New structure enhances

mid-frequency performance

Advanced permanent

magnet DC motor improves low-

frequency band performance

8HP

10HP

12HP

14HP

16HP

18HP

8HP

10HP

12HP

14HP

16HP

18HP

MCAC-VTSM-2015-09 R410AAll DC Inverter V4+S Series 60Hz

General Information 3

1.1.4 High efficiency heat exchanger

Newly designed window type fins enlarge the heat exchange area and decrease air resistance, enhance

heat exchange performance and save more energy.

Hydrophilic fins and internally threaded copper pipes optimize heat exchange efficiency.

δdesign increases the hot liquid rate in the condenser and improves the heat-exchange efficiency.

1.2 Flexible design

1.2.1 Wide capacity range

V4+S Series has extensive capacity ranging from 8HP to 72HP, meets all customer requirement concerning

small to large buildings.

1.2.2 Wide operation range

V4+S Series operates stably under extreme conditions, ranging from minus 20°C to 48°C.

1.2.3 Flexible piping design

*The longest piping length is 40m standard. It can be

extended to 90m. When the length is over 40m, please

refer to installation part for more information and

restrictions.

Total piping length

1000m

Longest length actual (Equivalent)

175(200)m

Longest length after first branch

90*m

Level difference between indoor

and outdoor units - ODU up (down)

70(110)m

Level difference between indoor units

30m

43oC

75oC

Liquid

Gas

New design

Original design

Longest actual piping length 175m

Level difference between IDU~ODU 110m

Level difference

between IDU~IDU 30m

Heating mode

Cooling mode

-5oC

48oC

-20oC

24oC

R410AAll DC Inverter V4+S Series 60Hz MCAC-VTSM-2015-09

4 General Information

1.3 High reliability

1.3.1 Cycle duty operation

The cyclical start-up sequence of outdoor units and DC inverter compressors equalized compressor duty and

extends operating life

1.3.2 Back-up function

In a multiple system, if one module is failed, other modules can be backup instead of the failed one for

continuing operation.

1.3.3 Precise oil control technology

5 stages oil control technology ensures all outdoor unit and compressor oil is always kept at a safe level,

completely solving any compressor oil shortage problems.

1st stage: Compressor internal oil separation.

2nd stage: High efficiency centrifugal oil separator (separation efficiency up to 99%) ensures oil

separated from the discharge gas is returned to the compressors.

3rd stage: Oil balance pipes between compressors ensure even oil distribution to keep compressors

running normally.

4th stage: Oil balance pipes among modules ensure even oil distribution among modules.

5th stage: Auto oil return program by monitoring the running time and system status ensures reliable oil

return.

MCAC-VTSM-2015-09 R410AAll DC Inverter V4+S Series 60Hz

General Information 5

1.4 Enhanced comfort

1.4.1 Night silent operation mode

Night Silent Mode feature which is easily set on the PCB board allows the unit to be set to various time options

during Non-peak and Peak operation time minimizing the units noise output.

1.4.2 Intelligent defrosting technology

Intelligent defrosting program will judge the defrosting time according to the system real requirement, reduce

heating loss caused by unnecessary defrosting and create more comfort.

Defrosting time can be shortened to 4 min. due to the specialized defrosting valve.

1.4.3 Rapid warm up and cool down function

The DC Inverter Compressor system reaches full load rapidly providing less temperature fluctuation and an

improved living environment.

8hrs

10hrs

Night silent Mode

Start

End

Peak value of ambient temp.

Noise

Intelligent defrosting

Usual defrosting

Heating capacity

Time

tmin.

Δt

Time

Cooling operation

Inverter

Non-inverter

Δ1

Δ2

R410AAll DC Inverter V4+S Series 60Hz MCAC-VTSM-2015-09

6 General Information

1.5 Easy installation and service

1.5.1 Auto addressing

Outdoor unit can distribute addresses for indoor units automatically.

Wireless and wired controllers can query and modify each indoor unit's address.

1.5.2 Simple communication wiring

Centralized controller (CCM03 or CCM30) can be connected from indoor side or outdoor side (XYE terminals)

at will.

With one set of wires, we can achieve the network communication and system communication, making

installation at site more convenient.

1.5.3 Easy Maintenance

Inspection window for checking the systems status.

Self-diagnosis function helps service engineers locate faults quickly and easily.

Compressor is located near the door, which simplifies checks and enables valve or compressor parts to be

replaced easily.

X Y E

P Q E

MCAC-VTSM-2015-09 R410AAll DC Inverter V4+S Series 60Hz

General Information 7

2. Outdoor units

Outdoor units lineup

The outdoor units capacity ranges from 8HP up to 88HP in 2HP increments, a max. combination of 4 basic

models.

8,10HP

14,16,18HP

20~36HP

38~54HP

56~72HP

R410AAll DC Inverter V4+S Series 60Hz MCAC-VTSM-2015-09

8 General Information

Combination table

Model

Noof

Outdoor

Units

Noof

Compressors

Outdoor Unit Combination

Max. Noof

Connectable

Indoor Units

Capacity

8HP

10HP

12HP

14HP

16HP

18HP

Cooling

(kW)

Heating

(kW)

8HP

25.2

10HP

31.5

12HP

33.5

37.5

14HP

16HP

18HP

20HP

22HP

61.5

24HP

76.5

26HP

81.5

28HP

87.5

30HP

32HP

101

34HP

106

36HP

100

112

38HP

106

119

40HP

113

126.5

42HP

120

135

44HP

123

137.5

46HP

128

143.5

48HP

135

151

50HP

140

157

52HP

145

162

54HP

150

168

56HP

156

175

58HP

163

182.5

60HP

168

188.5

62HP

173

193.5

64HP

178

199.5

66HP

185

207

68HP

190

213

70HP

195

218

72HP

200

224

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