Midea Mini VRF Manuale operativo

3 phase, 380-415V, 50/60Hz

MDV-120W/DGN1

MDV-140W/DGN1

MDV-160W/DGN1

Model:

Technical Service Manual

Mini VRF

Contents

Part 1 General Information.......................................…1

Part 2 Outdoor Units.................................................…9

Part 3 Installation ....................................................…44

Part 4 Troubleshooting .........................................…58

Manufacture reserves the right to discontinue, or change at any time, specifications or designs without

notices and without incurring obligations.

R410AAll DC Inverter Mini VRF MCAC-VTSM-2016-02

MCAC-VTSM-2016-02 R410AAll DC Inverter Mini VRF

General Information 1

Part 1 General Information

1. Product Lineup ..................................................................................... 2

2. Nomenclature........................................................................................ 3

3. Features................................................................................................. 4

4. Indoor Units Lineup.............................................................................. 7

R410AAll DC Inverter Mini VRF MCAC-VTSM-2016-02

2 General Information

1. Product Lineup

Outdoor Units

Model name

Dimension body(mm)

Net/Gross weight (kg)

Power supply

MDV-120W/DGN1

Width:900

Height:1327

Depth:400

95/105

380-415V 3N~50/60Hz

MDV-140W/DGN1

Width:900

Height:1327

Depth:400

99/109

380-415V 3N~50/60Hz

MDV-160W/DGN1

Width:900

Height:1327

Depth:400

100/110

380-415V 3N~50/60Hz

MCAC-VTSM-2016-02 R410AAll DC Inverter Mini VRF

General Information 3

2. Nomenclature

M D V - 120 W / D G N1

*Note: the actual cooling capacity please refer to the nameplate.

Refrigerant type

N1:R410A

Power Supply

G: 380-415V 3N~50/60Hz

Inverter Type

D: DC Inverter

W: Outdoor unit

Cooling Capacity (×100W)*

Midea

R410AAll DC Inverter Mini VRF MCAC-VTSM-2016-02

4 General Information

3. Features

3.1 High efficient DC inverter compressor

At the heart of Mini VRF system is a high efficiency twin rotary compressor. It enables the outdoor output to be

modulated by the cooling or heating demands of the control area, ensures precise temperature regulation and

highly efficiency energy usage.

3.2 High performance heat exchanger

The new designed window fins enlarge the heat-exchanging area,

which decrease the air resistance, save more power and enhance heat

exchange performance.

Hydrophilic film fins and inner-threaded copper pipes optimize heat

exchange efficiency.

3.3 Newly designed air outlet grill

Optimally designed fan shape and newly designed grill ensure both safety and air volume.

New air outlet grill

Compressor

(TwinRotary) structure

Highly Efficient DC Motor:

- Creative motor core design

- High density neodymium magnet

- Concentrated type stator

-Wider operating frequency range

Better balance and Extremely Low Vibration:

- Twin eccentric cams

- 2 balance weights

Highly Stable Moving Parts:

- Optimal material matching rollers and vanes

-Optimize compressor drive technology

- Highly robust bearings

-Compact structure

MCAC-VTSM-2016-02 R410AAll DC Inverter Mini VRF

General Information 5

46°C

-15°C

COOLINGMODE

27°C

-15°C

HEATINGMODE

3.4 Wide operation temperature range

No matter in extremely cold winter when outdoor temperature gets as low as -15°C or in hot summer when

temperature is up to 46°C, the Mini VRF system will keep stable performance.

3.5 Flexible piping design

3.6 Space saving design

The Mini VRF units are slimmer and more compact, resulting in significant savings in installation space.

In some large residential and light commercial areas, such as villas, restaurants, usually it need more than one

indoor unit, which in turn requires multiple outdoor units.

Midea's Mini VRF system solves this problem, and retains buildings' original aesthetics.

The longest piping length is 70m

The first branch joint to the

farthest IDUis 20m

The IDUto the nearest

branch joint is 15m

Level difference between IDUand ODUis 30m

Level difference between IDUs is 8m

Piping Length

Permitted Value

Total piping length (Actual)

100m

Longest piping

length

Actual

60m

Equivalent

70m

The first branch joint to the farthest IDU

20m

The IDU to the nearest branch pipe

15m

Level difference

between ODU~IDU

ODU up

30m

ODU down

20m

Level difference between IDU~IDU

R410AAll DC Inverter Mini VRF MCAC-VTSM-2016-02

6 General Information

Front side

Bottom side

Back side

Right side

3.7 Auto Addressing

Outdoor unit can distribute addresses for indoor units automatically.

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

3.8 More Convenient Piping Connector –Branch Box

Easier and safer installation thanks to a branch box that simplifies piping work and the adoption of screw

connection.

Both left and right pipe flare connectin from outdoor unit to branch box is reserved, which greatly simplifies field

installation.

3.9 Four-Way Piping Connection

A four-direction space is available for connecting

pipes and wiring in various installation sites.

910

MCAC-VTSM-2016-02 R410AAll DC Inverter Mini VRF

General Information 7

4. Indoor Units Lineup

Capacity

(×100W)

Cassette type

One-way cassette

Two-way cassette

Compact four-way

cassette

Four-way cassette

●

100

●

112

●

140

●

Capacity

(×100W)

Duct type

Low static pressure duct

Medium static pressure duct

High static pressure duct

●

100

112

●

140

●

160

●

Capacity

(×100W)

Floor-standing/Ceiling & Floor/Console

Floor standing (exposed)

Floor standing

(concealed)

Ceiling & floor

console

●

112

●

140

●

160

●

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