Midea One-way Cassette Series Operating manual

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Commercial Air Conditioner Division
Midea Group
Address: Midea Headquarters Building, 6 Midea Avenue, Beijiao, Shunde, Foshan,
Guangdong, China
Postal code: 528311
Tel: [phone] Fax: [phone]
cac.midea.com global.midea.com
Note: The data in this book may be changed without notice for further improvement on
quality and performance.
One-way Cassette
Two-way Cassette
Compact Four-way Cassette
Four-way Cassette
Silent Four-way Cassette
Series:
VRF Indoor Unit
50Hz

01 One-way Cassette
25 Two-way Cassette
42 Compact Four-way Cassette
58 Four-way Cassette
80 Silent Four-way Cassette
Contents

One-way Cassette MCAC-VTSM-2017-01
1
One-way Cassette
1. Features............................................................................................. 2
2. Specifications ................................................................................... 3
3. Dimensions ....................................................................................... 6
4. Service Spaces ................................................................................. 8
5. Piping Diagrams ............................................................................... 9
6. Wiring Diagrams............................................................................. 10
7. Capacity Tables............................................................................... 13
8. Electrical Characteristics............................................................... 19
9. Sound Levels .................................................................................. 20
10. Accessories................................................................................... 24

MCAC-VTSM-2017-01 One-way Cassette
2
1. Features
1.1 New panel design
The new panel is equipped with digital display function, which can show temperature, warning message and
check running parameters.
1.2 Compact design
For capacity 1.8kW to 3.6kW,needs only 153mm space above the ceiling. And 189mm for 4.5~7.1kW
models.
1.3 Parts inside installation
The throttling components and water pump are internally installed which means lower cost, no extra
accessories or installation time.
1.4 Large airflow and low noise
Large airflow, for high ceiling application (installation height can reach up to 3.2m for 1.8~3.6kW models and
4.0m for 4.5~7.1kW models) guarantees comfort in large space.
1.5 Improved air quality
Two folding type air filters and two standard formaldehyde absorption nets improve the air quality greatly.
The design of a long air outlet and a wide guide fan blade, which enlarges the range of flow transportation.
1.6 Auto swing
Auto swing mechanism guarantees even airflow distribution and a better room temperature balance.
1.7 Built-in water pump with 750mm pump head
1.8 Prevent condensation in air outlet by the patent of a new structure design
By the adoption of this structure, the guide wing will always wrapped up by dry cold air, cutting off the contact
route of moist hot air and the cold guide wing.As a result, the water vapour in mosit hot air gets no change to
condense in the surface of guide wing.
1.9 Auto restart
When the indoor unit is powered off, it will auto restart when powered on again after 3 minutes and operate
in the previous state.
Ultra thin
153mm
750mm
Single-flow design suits
corner installation
Cooling
Heating

One-way Cassette MCAC-VTSM-2017-01
3
2. Specifications
Model
MDV-D18Q1/N1-D
MDV-D22Q1/N1-D
Power supply
1 phase, 220-240V, 50Hz
Cooling
Capacity
kW
1.8
2.2
Input
W
41
41
Rated current
A
0.24
0.24
Heating
Capacity
kW
2.2
2.6
Input
W
41
41
Rated current
A
0.24
0.24
Indoor fan motor
Model
RPS12N
Type
AC
Input(H/M/L)
W
29.5/26.7/25.0
29.5/26.7/25.0
Capacitor
μF
0.8
Speed (H/M/L)
r/min
1180/955/710
Indoor coil
Number of rows
2
Tube pitch(a) ×row pitch(b)
mm
21×13.37
Fin spacing
mm
1.5
Fin type
Hydrophilic aluminum
Tube outside dia. and type
mm
Ф7 Inner groove tube
Coil length ×height ×width
mm
760×252.4×26.74
Number of circuits
2
Indoor air flow (H/M/L)
m3/h
523/404/275
Sound pressure level (H/M/L)
dB(A)
37/34/30
38/34/30
Indoor unit
Dimension (W×H×D)
mm
1054×153×425
Packing (W×H×D)
mm
1155×245×490
Net/Gross weight
kg
12.5/16
Panel
Dimension (W×H×D)
mm
1180×25×465
Packing (W×H×D)
mm
1232×107×517
Net/Gross weight
kg
3.5/5.2
Refrigerant type
R410A
Throttle
Type
Electronic expansion valve
Design pressure(H/L)
MPa
4.4/2.6
Pipe connections
Liquid pipe
mm
Ф6.35
Gas pipe
mm
Ф12.7
Drain pipe
mm
OD Ф25
Standard Controller
Wireless remote controller
Notes: 1. Nominal cooling capacities are based on the following conditions: return air temperature : 27°CDB,19°CWB,
outdoor temperature:35°CDB,equivalent refrigerant piping: 7.5m(horizontal).
2. Nominal heating capacities are based on the following conditions: return air temperature: 20°CDB,
outdoor temperature: 7°CDB,6°CWB,equivalent refrigerant piping: 7.5m(horizontal)

MCAC-VTSM-2017-01 One-way Cassette
4
Specifications
Model
MDV-D28Q1/N1-D
MDV-D36Q1/N1-D
Power supply
1 phase, 220-240V, 50Hz
Cooling
Capacity
kW
2.8
3.6
Input
W
41
41
Rated current
A
0.25
0.25
Heating
Capacity
kW
3.2
4
Input
W
41
41
Rated current
A
0.25
0.25
Indoor fan motor
Model
RPS12N
Type
AC
Input(H/M/L)
W
31.0/27.2/25.3
31.0/27.2/25.3
Capacitor
μF
1
Speed (H/M/L)
r/min
1270/1050/790
Indoor coil
Number of rows
2
Tube pitch(a) ×row pitch(b)
mm
21×13.37
Fin spacing
mm
1.5
Fin type
Hydrophilic aluminum
Tube outside dia. and type
mm
Ф7 Inner groove tube
Coil length ×height ×width
mm
760×252.4×26.74
Number of circuits
3
Indoor air flow (H/M/L)
m3/h
573/456/315
Sound pressure level (H/M/L)
dB(A)
39/37/34
40/38/34
Indoor unit
Dimension (W×H×D)
mm
1054×153×425
Packing (W×H×D)
mm
1155×245×490
Net/Gross weight
kg
13/16.5
Panel
Dimension (W×H×D)
mm
1180×25×465
Packing (W×H×D)
mm
1232×107×517
Net/Gross weight
kg
3.5/5.2
Refrigerant type
R410A
Throttle
Type
Electronic expansion valve
Design pressure(H/L)
MPa
4.4/2.6
Pipe connections
Liquid pipe
mm
Ф6.35
Gas pipe
mm
Ф12.7
Drain pipe
mm
OD Ф25
Standard Controller
Wireless remote controller
Notes: 1. Nominal cooling capacities are based on the following conditions: return air temperature : 27°CDB,19°CWB,
outdoor temperature:35°CDB,equivalent refrigerant piping: 7.5m(horizontal)
2. Nominal heating capacities are based on the following conditions: return air temperature: 20°CDB,
outdoor temperature: 7°CDB,6°CWB,equivalent refrigerant piping: 7.5m(horizontal)

One-way Cassette MCAC-VTSM-2017-01
5
Specifications
Model
MDV-D45Q1/N1-D
MDV-D56Q1/N1-D
MDV-D71Q1/N1-D
Power supply
1 phase, 220-240V, 50Hz
Cooling
Capacity
kW
4.5
5.6
7.1
Input
W
48
48
60
Rated current
A
0.27
0.32
0.36
Heating
Capacity
kW
5
6.3
8
Input
W
43
44
55
Rated current
A
0.27
0.32
0.36
Indoor fan motor
Model
YDK38-4
YDK43-4
Type
AC
Input(H/M/L)
W
39.5/33.5/25.6
41.5/36.0/28.0
56.2/40.2/28.7
Capacitor
μF
1.5
3
3
Speed (H/M/L)
r/min
930/830/710
1080/990/860
1150/1020/850
Indoor coil
Number of rows
2
Tube pitch(a) ×row pitch(b)
mm
21×13.37
Fin spacing
mm
1.5
Fin type
Hydrophilic aluminum
Tube outside dia. and type
mm
Ф7 Inner groove tube
Coil length ×height ×width
mm
955×231×26.74
955×336×26.74
Number of circuits
3
3
5
Indoor air flow (H/M/L)
m3/h
693/600/476
792/688/549
933/749/592
Sound pressure level (H/M/L)
dB(A)
41/39/35
42/40/36
44/41/37
Indoor unit
Dimension (W×H×D)
mm
1275×189×450
Packing (W×H×D)
mm
1370×295×505
Net/Gross weight
kg
18.5/22.8
18.8/23.1
19.5/23.8
Panel
Dimension (W×H×D)
mm
1350×25×505
Packing (W×H×D)
mm
1410×95×560
Net/Gross weight
kg
4/5.4
Refrigerant type
R410A
Throttle
Type
Electronic expansion valve
Design pressure(H/L)
MPa
4.4/2.6
Pipe connections
Liquid pipe
mm
Ф6.35
Ф9.53
Ф9.53
Gas pipe
mm
Ф12.7
Ф15.9
Ф15.9
Drain pipe
mm
ODФ25
Standard Controller
Wireless remote controller
Notes: 1. Nominal cooling capacities are based on the following conditions: return air temperature: 27°CDB,19°CWB,
outdoor temperature:35°CDB,equivalent ref. Piping: 7.5m(horizontal)
2.Nominal heating capacities are based on the following conditions: return air temperature: 20°CDB,outdoor
temperature: 7°CDB,6°CWB,equivalent ref. Piping: 7.5m(horizontal)

MCAC-VTSM-2017-01 One-way Cassette
6
3. Dimensions
MDV-D18Q1/N1-D MDV-D22Q1/N1-D MDV-D28Q1/N1-D MDV-D36Q1/N1-D
465
1180
890
890
202 74
25153
428
20 17
60
5050
51
119
1020
290
290
208
60
43
78
1060
65
143

One-way Cassette MCAC-VTSM-2017-01
7
MDV-D45Q1/N1-D MDV-D56Q1/N1-D MDV-D71Q1/N1-D
1350
1054
70
505
228
1061
189
25
1235
300
300
1235
119
42
69
60
170
75 30 84
56
33
51
121
452
Please use the installation paper plate to make sure the position of the installation screws.
Ceiling cutting size:C
Ceiling cutting size:A
Screw fixing size:D
Please use the installation paper plate to make sure the
positions of the installation screws.
Screw fixing size:B
4×Φ10
A
18-36 45-71
B
C
D
430
290
1100
1015
470
300
1290
1235
Model
No. Unit：mm

MCAC-VTSM-2017-01 One-way Cassette
8
4. Service Spaces
Please avoid installing in the following places :
A place with flammable gas or material.
A saline place such as a seashore vicinity.
A place with sulphur gas.
A place with oil gas,such as kitchen.
A place with high-humidity air.
An unbearable place.
A place where high-frequency waves are generated.
The appliance shall not be installed in the laundry.
Please comply with the related national eletric standard to make electric insulation for construction and metal
parts of air-conditioner.
Please choose the place where the ventilation is good.
Ceiling space repquires ≥Cmm.
The installation height of the unit can not be higher than D mm,or it will affect the operation effect.
≥C
≥B
A
≥100 ≥100
C
≤D
Unit：mm
E≥100
Unit：mm
Fan angle range
Air return port
The air outlet can not has any barriers such as pendant lamp, folding screen etc.
A
18-36 45-71
B
C
D
E
1180
1380
153
3200
465
1350
1550
189
4000
505
Model
No.