Midea MVS28A-VA1, MVS56A-VA1, MVS22A-VA1, MVS45A-VA1, MVS36A-VA1 Service Manual

DM12-01.01.02-02en

Service manual

MIV V4+ Indoor units

Compact Four-way Cassette Type

MVS22A-VA1

MVS28A-VA1

MVS36A-VA1

MVS45A-VA1

MVS56A-VA1

DM12-01.01.02-02en MIV V4+ Indoor Units

Compact Four-way Cassette Type MVS-A-VA1

Compact Four-way Cassette Type

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

2. Specifications .................................................................................... 3

3. Dimensions ........................................................................................ 6

4. Service Space .................................................................................... 7

5. Piping Diagram (EXV beside) ........................................................... 8

6. Wiring Diagram .................................................................................. 9

7. Capacity Tables ............................................................................... 10

8. Electric Characteristics .................................................................. 14

9. Sound Levels ................................................................................... 15

MIV V4+ Indoor Units DM12-01.01.02-02en

2 Compact Four-way Cassette Type MVS-A-VA1

1. Features

(1) Low operation noise, quiet design for user comfort

--- Streamline plate ensures quietness

--- Creates natural and comfortable environment

(2) Efficient cooling

--- Equal, fast and wide — range cooling

(3) The adoption of the most advanced 3-Dimensional Screw fan

--- Reduces the air resistance passing through

--- Smoothes air flow

--- Makes air speed distribution to the heat exchange uniform

(4) Improvement for easy installation and maintenance

--- Little space is required for installation into a shallow ceiling,

--- Extremely compact casing (570mm in width and depth) enables unit to fit flush into ceilings and match standard architectural modules

--- Because of the compactness and weight reduction of the main unit and panel, all models can be

installed without a hoist

(5) Optimal design, smaller Control Box, Space saving and convenient for wiring, Using fire resistance galvanized steel for E-box material. Metal box make the control part more stable and

prevent damaging

(6) Drain up pump with 500 mm pumphead fitted as standard, max. up to 600 mm head.

DM12-01.01.02-02en MIV V4+ Indoor Units

Compact Four-way Cassette Type MVS-A-VA1 3

2. Specifications

Model MVS22A-VA1 MVS28A-VA1

Power supply V-ph-Hz 220~240-1-50 220~240-1-50

Cooling

Capacity kW 2.2 2.8

Input W 51 52

Rated current A 0.175 0.175

Heating

Capacity kW 2.4 3.2

Input W 43 44

Rated current A 0.175 0.175

Indoor fan motor

Model YDK15-6M YDK15-6M

Type AC Motor AC Motor

Input W 34.3 34.3

Capacitor uF 1.2uF/450V 1.2uF/450V

Speed(hi/mi/lo) r/min 658/586/485 658/586/485

Indoor coil

Number of rows 1 1

Tube pitch(a)x row pitch(b) Mm 21*13.37 21*13.37

Fin spacing Mm 1.3 1.3

Fin type (code) Hydrophilic aluminium

Tube outside dia. and type Mm

Ф7 Ф7

Inner groove tube

Coil length x height x width Mm 1310×210×13.37 1310×210×13.37

Number of circuits 2 2

Indoor air flow (Hi/Me/Lo) m3/h 522/414/313 522/414/313

Sound level (sound pressure) dB(A) 35.8/33.4/23.4 35.8/33.4/23.4

Indoor unit

Dimension (W x H x D) Mm 630*265*575 630*265*575

Packing (W x H x D) Mm 675*285*675 675*285*675

Net/Gross weight Kg 17.5/22 17.5/22

Panel

Model T-MBQ-03D1

Dimension (W x H x D) Mm 647*50*647 647*50*647

Packing (W x H x D) Mm 705*113*705 705*113*705

Net/Gross weight Kg 3/5 3/5

Refrigerant Type R410a R410a

Throttle Electric expansive valve

Design pressure MPa 4.4/2.6 4.4/2.6

Refrigerant piping Liquid side/ Gas side Mm 6.35/12.7 6.35/12.7

Connection wiring

Power wiring mm2 3*2.0

Signal wiring mm2 3*0.75（3-core shielded wire）

Drainage water pipe dia. Mm ID Ф20 ODФ25 ID Ф20 ODФ25

Wireless remote controller Wireless remote controller (RM05/BG(T)E-A) (Standard)

Operation temp ℃ 17～32

Notes:

1. Nominal cooling capacities are based on the following conditions: return air temp.: 27°CDB, 19°CWB, and outdoor

temp.:35°CDB, equivalent ref. piping: 8m (horizontal)

2. Nominal heating capacities are based on the following conditions: return air temp.: 20°CDB, outdoor temp.: 7°CDB, 6°CWB, and equivalent ref. Piping: 8m (horizontal)

MIV V4+ Indoor Units DM12-01.01.02-02en

4 Compact Four-way Cassette Type MVS-A-VA1

Model MVS36A-VA1 MVS45A-VA1

Power supply V-ph-Hz 220~240-1-50 220~240-1-50

Cooling

Capacity kW 3.6 4.5

Input W 58 58

Rated current A 0.21 0.21

Heating

Capacity kW 4.0 5.0

Input W 50 51

Rated current A 0.21 0.21

Indoor fan motor

Model YDK15-6P YDK15-6P

Type AC MOTOR AC MOTOR

Input W 47.1 47.1

Capacitor uF 1.5uF/450V 1.5uF/450V

Speed(hi/mi/lo) r/min 780/670/540 780/670/540