Midea MDTA-76CRN2 User manual

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Content
Part 1 General Information........................................... 1
Part 2 Indoor Units........................................................ 4
Part 3 Outdoor Units................................................... 50
Part 4 Installation........................................................ 65
Part 1 General Information
1. Model Names of Indoor/Outdoor Units.............................1
2. External Appearance..........................................................2
3. Nomenclature.....................................................................3
1. Model Names of Indoor/Outdoor Units
1.1 Model Names of Units with Cooling only:
Type
Indoor unit
Outdoor unit
Capacity
Model
Power
supply
Model
Power
supply
kW
kBtu/h
Floor-standing
type
MDFA-76CRN2
220~240V-
1N-50Hz
MOV-76C-CN2
380~415V-
3N-50Hz
22
76
MDFA-96CRN2
MOV-96C-CN2
28
96
Mid-static
pressure duct
type
MDTA-76CRN2
MOV-76C-CN2
22
76
MDTA-96CRN2
MOV-96C-CN2
28
96
MDTA-120CRN2
MOV-120C-CN2
380~400V-
3N-50Hz
35
120

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1.2 Model Names of Units with Cooling and heating:
Type
Indoor unit
Outdoor unit
Capacity
Model
Power
supply
Model
Power
supply
kW
kBtu/h
Floor-standing
type
MDFA-76HRN2
220~240V-
1N-50Hz
MOV-76H-CN2
380~415V-
3N-50Hz
22
76
MDFA-96HRN2
MOV-96H-CN2
28
96
Mid-static
pressure duct
type
MDTA-76HRN2
MOV-76H-CN2
22
76
MDTA-96HRN2
MOV-96H-CN2
28
96
MDTA-120HRN2
MOV-120H-CN2
380~400V-
3N-50Hz
35
120
2. External Appearance
2.1 Indoor Units
MDTA-76C(H)RN2
MDTA-96C(H)RN2
MDFA-76C(H)RN2
MDFA-96C(H)RN2
MDTA-120C(H)RN2

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MDOV-76C(H)-CN2
MDOV-96C(H)-CN2
MDOV-120C(H)-CN2
3. Nomenclature
3.1 Indoor unit:
MD TA
–
76 CRN2
N2：R407C；N1：R410a
R：Remote Controller
Function Code:
C: Cooling
H: Cooling and Heating
Cooling Capacity (76 kBtu/h)
Product Series
A: 1st
time design
B: 2nd
time design
Indoor Units
T: Medium static pressure duct type
F: Floor-standing type
H: High static pressure duct type
MDV
2.2 Outdoor Unit

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Part 2 Indoor Units
Duct Type ................................................................................ 4
Floor-standing Type ............................................................. 31
Duct Type
1. Features .............................................................................. 5
2. Specifications ..................................................................... 5
3. Dimensions ......................................................................... 8
4. Service Space ..................................................................... 9
5. Refrigerant cycle Diagrams ............................................. 11
6. Wiring Diagrams ............................................................... 11
7.Capacity Table ................................................................... 15
8. Static Pressure ................................................................. 21
9. Electric Characteristics ................................................... 22
10. Sound Levels .................................................................. 23
N2：R407C；
N1：R410a
Function Code：
C: Cooling Only
H: Heat pump
Cooling Capacity (76 kBtu/h)
Universal Outdoor Unit
Outdoor Unit
MDV
MD OV
76 CN2
3.2 Outdoor unit:
12. Troubleshooting.............................................................24

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Model
MDTA-76CRN2
MDTA-76HRN2
MDTA-96CRN2
MDTA-96HRN2
Code
220070900201
220070900191
220070900181
220070900171
Power supply
-
220~240V-1N-50Hz
220~240V-1N-50Hz
Rated input power
W
11500
11500
14500
14700
Rated current
A
20
20
28
28.1
Cooling
Capacity
Btu/h
75,100
75,100
92,800
91,400
W
22000
22000
27200
26800
Input
W
7500
7500
9200
9200
EER
W/W
2.93
2.93
2.96
2.91
Heating
Capacity
Btu/h
——
83600
——
109500
W
——
24500
——
32100
Input
W
——
7320
——
9800
COP
W/W
——
3.35
——
3.28
Indoor air flow
m3/h(CFM)
4650(2700)
4650(2700)
5600(3300)
5600(3300)
Indoor external static pressure
Pa
100
100
100
100
Indoor noise level
dB(A)
54
54
55
55
Refrigerant
Type
-
R407C
Control
-
Capillary
Capillary
Capillary
Capillary
Fan
Type
-
Centrifugal fan
Centrifugal fan
Centrifugal fan
Centrifugal fan
Fan model
-
SYZ9-9MD
SYZ9-9MD
SYZ9-9MD
SYZ9-9MD
Dimension
mm
Φ307
Φ307
Φ307
Φ307
Drive type/ Motor
step
-
Direct/ Single
Direct/ Single
Direct/ Single
Direct/ Single
Motor model
-
YDK300-4X
YDK300-4X
YDK550-4X
YDK550-4X
Motor Input * No.
W
720*2
720*2
1015*2
1015*2
Motor speed
rpm
1040
1040
1300
1300
Coil
Type
-
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Tube size
mm
Ф9.52
Ф9.52
Ф9.52
Ф9.52
No. of rows
-
4
4
4
4
Fin per inch
FPI
17
17
17
17
Length* height
mm
1200*406
1200*406
1200*406
1200*406
Controller
-
Remote controller
Remote controller
Drain pipe size
mm
Ф41
Ф41
Ф41
Ф41
Connection
wiring
Power wiring
mm2
3*2.5
3*2.5
3*2.5
3*2.5
Signal wiring
mm2
2*1.0
4*1.0
2*1.0
4*1.0
Indoor unit
Dimension
(W*H*D)
mm
1350*450*760
1350*450*760
1350*450*760
1350*450*760
Packing
(W*H*D)
mm
1549*476*917
1549*476*917
1549*476*917
1549*476*917
Net/Gross weight
kg
105/120
105/120
105/120
105/120
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°CWB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
2. Specifications
R407C R407C R407C

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Model
MDTA-120CRN2
MDTA-120HRN2
Code
220070900161
220070900151
Power supply
-
220~240V-1N-50Hz
Rated input power
W
18000
18000
Rated current
A
28.7
28.7
Cooling
Capacity
Btu/h
116,000
116,000
W
34000
34000
Input
W
11900
11900
EER
W/W
2.86
2.86
Heating
Capacity
Btu/h
——
139900
W
——
41000
Input
W
——
12600
COP
W/W
——
3.25
Indoor air flow
m3/h
6800
6800
Indoor external static pressure
Pa 150
150
Indoor noise level
dB(A) 56
56
Refrigerant
Type
-
Control
- Capillary
Capillary
Fan
Type
- Centrifugal fan
Centrifugal fan
Fan model
- SYZ9-9MD
SYZ9-9MD
Dimension
mm Φ307
Φ307
Drive type/ Motor
step
- Direct/ Single
Direct/ Single
Motor model
- YDK300-4X
YDK300-4X
Motor Input * No.
W 720*3
720*3
Motor speed
rpm
1040/930/825
1040/930/825
Coil
Type
-
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Tube size
mm
Ф7
Ф7
No. of rows
-
4
4
Fin per inch
FPI
17
17
Length* height
mm
1602*588
1602*588
Controller
-
Remote controller
Drain pipe size
mm
Ф41
Ф41
Connection
wiring
Power wiring
mm2
3*2.5
3*2.5
Signal wiring
mm2
2*1.0
4*1.0
Indoor unit
Dimension
(W*H*D)
mm
1828*638*858
1828*638*858
Packing
(W*H*D)
mm
2095*689*929
2095*689*929
Net/Gross weight
kg
188/220
188/220
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°CWB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
R407C R407C

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3. Dimensions
3.1 MDTA-76C(H)RN2, MDTA-96C(H)RN2

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3.2 MDTA-120C(H)RN2

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4. Service Space
Electric control box
Inspection hole
≥600mm≥500mm
Top view Side view
Inspection
Canvas adapter
Muffle
A
ir outlet Air inlet
Air filter
hole
Muffle
Air duct system

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5. Refrigerant cycle diagrams
5.1 Cooling only: MDTA-76CRN2, MDTA-96CRN2, MDTA-120CRN2
Discharge temp. sensor
HP Switch
Liquid-gas seperator
Outdoor heat-exchanger
Stopvalve Stopvalve
Indoor unit
LP Switch
T4
T2
T3
Cooling
Indoor
heat-exchanger
Capillary
Compressors
5.3 Cooling and heating: MDTA-76HRN2, MDTA-96HRN2, MDTA-120HRN2
Discharge temp. sensor
HP Switch
4-way valve
Liquid-gas seperator
Outdoor heat-exchanger
Stopvalve Stopvalve
Indoor unit
Checkvalve
LP Switch
T4
T2
T3
Heating
Cooling
Indoor
heat-exchanger
Capillary
Compressors