Midea MVC28A-VA1 User manual

DM12-01.01.02-01en
Service manual
MIV V4+ Indoor units
Four-way Cassette Type
MVC28A-VA1
MVC36A-VA1
MVC45A-VA1
MVC56A-VA1
MVC71A-VA1
MVC80A-VA1
MVC90A-VA1
MVC100A-VA1
MVC112A-VA1
MVC140A-VA1

DM12-01.01.02-01en MIV V4+ Indoor Units
Four-way Cassette Type MVC-A-VA1
1
Four-way Cassette Type
1. Features .............................................................................................2
2. Specifications....................................................................................4
3. Dimensions........................................................................................7
4. Service Space....................................................................................8
5. Piping Diagram ..................................................................................9
6. Wiring Diagram................................................................................10
7. Capacity Tables ............................................................................... 11
8. Electric Characteristics ..................................................................18
9. Sound Levels...................................................................................19

MIV V4+ Indoor Units DM12-01.01.02-01en
Four-way Cassette Type MVC-A-VA1
2
1. Features
(1) 360° Air outlet panel
(2) Low operation noise
—Streamline plate ensures quietness
—Creates natural and comfortable environment
(3) Efficient cooling——Equal, fast and wide range cooling
(4) Excellent performance. Higher heat-exchanging efficiency and lower noise.
The optimal evaporator & sufficient airflow volume guarantees the excellent capacity
(5) The adoption of the most advanced 3- Dimensional Screw fan
—Reduces the air resistance passing through
—Smoothes the air flow
—Makes air speed distribution to the heat exchange uniform
(6) Adding digital tube displaying on the display board. LED can display the Error Code to make the
malfunction checking easier.
(7) Fresh air makes life healthier and more comfortable.

DM12-01.01.02-01en MIV V4+ Indoor Units
Four-way Cassette Type MVC-A-VA1
3
(8) Drainage pump can take up the condenser water to 750mm.
(9) Ultra-thin machine body to easy installation and maintenance:
2.8kW~8.0kW:230mm, 9.0kW~14kW:300mm.
(10) Swing angle of louver
1) Add one more swing motor, one motor driving two louvers. Controlling the interspace of each part,
minimizing the angle loss.
2) The swing angle of the first louver are 40~42 degrees and the second louver are 37~38 degrees. New
evaporator and inner configuration designed can acquire high heat-exchanger effect.
(11) More strengthening rib design around the panel, preventing the distortion for the panel.
(12) New outlet frame design to make the phenomena of coagulation great improvement: prevent the
condensing water from damaging the air guide strip.
(13) Adding rib on the panel of fan outlet, which can avoid the air outlet direct flow to people.
(14) Reserve spaces for air side-outlet, it is available to connect duct pipe hence. Air supplying from
the four sides to nearby small room.
(15) 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

MIV V4+ Indoor Units DM12-01.01.02-01en
Four-way Cassette Type MVC-A-VA1
4
2. Specifications
Model MVC28A-VA1 MVC36A-VA1 MVC45A-VA1
Power supply V-Ph-Hz 220-240V, 1Ph, 50Hz
Cooling
Capacity kW 2.8 3.6 4.5
Input W 80 80 90
Rated current A 0.4 0.4 0.4
Heating
Capacity kW 3.2 4.0 5.0
Input W 80 80 90
Rated current A 0.4 0.4 0.4
Indoor fan motor
Model YDK60-6F-3 YDK60-6F-3 YDK60-6F-3
Type AC motor AC motor AC motor
Brand Welling Welling Welling
Input W 98/85/75/70 98/85/75/70 98/85/75/70
Capacitor uF 2.5 2.5 3
Speed (hi/mid/lo) r/min (782)/600/509/422 (782)/600/509/422 (808)/652/547/467
Indoor coil
Number of rows 1 1 2
Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 21x13.37
Fin spacing mm 1.5 1.5 1.5
Fin type Hydrophilic Aluminum Hydrophilic Aluminum Hydrophilic Aluminum
Tube outside dia. and type mm Ф7,Innergroove Tube
Coil length x height x width mm 1930x168x13.37 1930x168x13.37 1961x168x26.74
Number of circuits 4 4 8
Indoor air flow (H/M/L) m3/h 847/766/640 847/766/640 864/755/658
Indoor noise level (Hi/Mid/Lo) dB(A) 42/38/35 42/38/35 42/38/35
Indoor unit
Dimension (WxHxD) mm 840x230x840 840x230x840 840x230x840
Packing (WxHxD) mm 955X247X955 955X247X955 955X247X955
Net/Gross weight kg 24/28 24/28 26/30
Panel
Model T-MBQ-02F1
Dimension (WxHxD) mm 950x46x950 950x46x950 950x46x950
Packing (WxHxD) mm 1000x60x1000 1000x60x1000 1000x60x1000
Net/Gross weight kg 6/8 6/8 6/8
Refrigerant type R410A R410A R410A
Throttle Electric expansive valve
Design pressure MPa 4.2/2.0 4.2/2.0 4.2/2.0
Refrigerant piping Liquid side/ Gas side mm Φ6.4/Φ12.7 Φ6.4/Φ12.7 Φ6.4/Φ12.7
Connecting wiring
Power wiring Nb×mm23×2.5(L≤20m)；3×3.5(L≤50m)
Signal wiring Nb×mm23×0.75 3×0.75 3×0.75
Drainage water pipe dia. mm IDФ28.5 ODФ32 IDФ28.5 ODФ32 IDФ28.5 ODФ32
Standard Controller Wireless remote controller (RM05/BG(T)E-A) , to set address
Operation temp C 17～30
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)

DM12-01.01.02-01en MIV V4+ Indoor Units
Four-way Cassette Type MVC-A-VA1
5
Model MVC56A-VA1 MVC71A-VA1 MVC80A-VA1
Power supply V- Ph-Hz 220-240V, 1Ph, 50Hz
Cooling
Capacity kW 5.6 7.1 8.0
Input W 75 82 97
Rated current A 0.4 0.5 0.5
Heating
Capacity kW 6.3 8.0 9.0
Input W 75 82 97
Rated current A 0.4 0.5 0.5
Indoor fan motor
Model YDK60-6F-3 YDK80-6E-2 YDK80-6E-2
Type AC motor AC motor AC motor
Brand Welling Welling Welling
Input W 98/85/75/70 120/110/100/90 120/110/100/90
Capacitor uF 3 3 3
Speed (hi/mid/lo) r/min (808)/652/547/467 (877)/755/627/490 (800)/777/662/525
Indoor coil
Number of rows 2 2 2
Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 21x13.37
Fin spacing mm 1.5 1.5 1.5
Fin type Hydrophilic Aluminum Hydrophilic Aluminum Hydrophilic Aluminum
Tube outside dia. and type mm Ф7, Innergroove Tube
Coil length x height x width mm 1961x168x26.74 1961x168x26.74 1961x168x26.74
Number of circuits 8 8 8
Indoor air flow (H/M/L) m3/h 864/755/658 1157/955/749 1236/973/729
Indoor noise level (Hi/Mid/Lo) dB(A) 42/38/35 45/42/39 45/42/39
Indoor unit
Dimension (WxHxD) mm 840x230x840 840x230x840 840x230x840
Packing (WxHxD) mm 955X247X955 955X247X955 955X247X955
Net/Gross weight kg 26/30 26/30 26/30
Panel
Model T-MBQ-02F1
Dimension (WxHxD) mm 950x46x950 950x46x950 950x46x950
Packing (WxHxD) mm 1000x60x1000 1000x60x1000 1000x60x1000
Net/Gross weight kg 6/8 6/8 6/8
Refrigerant type R410A R410A R410A
Throttle Electric expansive valve
Design pressure MPa 4.4/2.6 4.4/2.6 4.4/2.6
Refrigerant piping Liquid side/ Gas side mm Φ9.5/Φ15.9 Φ9.52/Φ15.9 Φ9.52/Φ15.9
Connecting wiring
Power wiring Nb×mm23×2.5(L≤20m)；3×3.5(L≤50m)
Signal wiring Nb×mm23×0.75 3×0.75 3×0.75
Drainage water pipe dia. mm IDФ28.5 ODФ32 IDФ28.5 ODФ32 IDФ28.5 ODФ32
Standard Controller Wireless remote controller (RM05/BG(T)E-A) , to set address
Operation temp C 17～30
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 DM12-01.01.02-01en
Four-way Cassette Type MVC-A-VA1
6
Model MVC90A-VA1 MVC100A-VA1 MVC112A-VA1 MVC140A-VA1
Power supply V- Ph-Hz 220-240V, 1Ph, 50Hz
Cooling
Capacity kW 9.0 10.0 11.2 14.0
Input W 160 160 160 170
Rated current A 0.7 0.7 0.7 0.8
Heating
Capacity kW 10.0 11.0 12.5 15.0
Input W 160 160 160 170
Rated current A 0.7 0.7 0.7 0.8
Indoor fan motor
Model YDK90-6E-1 YDK90-6E-1 YDK90-6E-1 YDK90-6E-1
Type AC motor AC motor AC motor AC motor
Brand Welling Welling Welling Welling
Input W 165/143/114/93 165/143/114/93 165/143/114/93 204/175/140/120
Capacitor uF 3.5 3.5 3.5 4
Speed (hi/mid/lo) r/min 770/640/550 770/640/550 770/640/550 820/750/620
Indoor coil
Number of rows 2 2 2 2
Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 21x13.37 21x13.37
Fin spacing mm 1.5 1.5 1.5 1.5
Fin type Hydrophilic Aluminum
Tube outside dia. and type mm Ф7, Innergroove Tube
Coil length x height x width mm 1955x252x26.74 1955x252x26.74 1955x252x26.74 1955x252x26.74
Number of circuits 8 8 8 12
Indoor air flow (H/M/L) m3/h 1540/1300/1120 1540/1300/1120 1540/1300/1120 1800/1500/1280
Indoor noise level (Hi/Mid/Lo) dB(A) 48/45/43 48/45/43 48/45/43 50/47/44
Indoor unit
Dimension (WxHxD) mm 840x300x840 840x300x840 840x300x840 840x300x840
Packing (WxHxD) mm 955X317X955 955X317X955 955X317X955 955X317X955
Net/Gross weight kg 32/37 32/37 32/37 32/37
Panel
Model T-MBQ-02F1
Dimension (WxHxD) mm 950x46x950 950x46x950 950x46x950 950x46x950
Packing (WxHxD) mm 1000x60x1000 1000x60x1000 1000x60x1000 1000x60x1000
Net/Gross weight kg 6/8 6/8 6/8 6/8
Refrigerant type R410A
Throttle Electronical expansive valve
Design pressure MPa 4.4/2.6 4.4/2.6 4.4/2.6 4.4/2.6
Refrigerant piping Liquid side/ Gas side mm Φ9.52/Φ15.9 Φ9.52/Φ15.9 Φ9.52/Φ15.9 Φ9.52/Φ15.9
Connecting wiring
Power wiring Nb×mm23×2.5(L≤20m)；3×3.5(L≤50m)
Signal wiring Nb×mm23×0.75 3×0.75 3×0.75 3×0.75
Drainage water pipe dia. mm IDФ28.5 ODФ32 IDФ28.5 ODФ32 IDФ28.5 ODФ32 IDФ28.5 ODФ32
Standard Controller Wireless remote controller (RM05/BG(T)E-A) , to set address
Operation temp C 17～30
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)

DM12-01.01.02-01en MIV V4+ Indoor Units
Four-way Cassette Type MVC-A-VA1
7
3. Dimensions
Indoor unit model A(mm) B(mm) C(mm) D(mm)
MVC28A-VA1 ～MVC45A-VA1 230 170 Φ6.35 Φ12.7
MVC56A-VA1 ～MVC80A-VA1 230 170 Φ9.52 Φ15.9
MVC90A-VA1 ～MVC140A-VA1 300 190 Φ9.52 Φ15.9

MIV V4+ Indoor Units DM12-01.01.02-01en
Four-way Cassette Type MVC-A-VA1
8
4. Service Space
1) There is enough room for installation and maintenance.
2) The ceiling is horizontal, and its structure can endure the weight of the indoor unit.
3) The outlet and the inlet are not impeded, and the influence of external air is the least.
4) The air flow can reach throughout the room.
5) The connecting pipe and drainpipe could be extracted out easily.
6) There is no direct radiation from heaters.
Indoor unit A(mm) H(mm)
MVC28A-VA1 ～MVC80A-VA1 230 ≥260
MVC90A-VA1 ～MVC140A-VA1 300 ≥330

DM12-01.01.02-01en MIV V4+ Indoor Units
Four-way Cassette Type MVC-A-VA1
9
5. Piping Diagram
flare nut
flare nut
T2B
gas side
motor
heat exchanger
fan
EXV
liquid side
T2
T1