Midea MRCT-075CWN1-D(C) 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.
Tropical, 3 phase, 380-415V, 50Hz
MCAC-RTT6S-201701
MRCT-075CWN1-D(C)
MRCT-150CWN1-D(C)
MRCT-250CWN1-D(C)
MRCT-100CWN1-D(C)
MRCT-200CWN1-D(C)
Model:
Technical Service Manual
Rooftop Package

Content
Part. 1 General information........................................................2
Part. 2 Performances..................................................................5
Part. 3 Installations...................................................................63
Part. 4 Controller.......................................................................94

MCAC-RTT6S-201701 Midea R410ATropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz
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Part. 1 General information
1. Product lineup........................................................................3
2. External Appearance.............................................................3
3. Nomenclature .........................................................................4

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz MCAC-RTT6S-201701
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1. Product lineup
Nominal ton
Model
Function
Air outlet
Power supply
7.5
MRCT-075CWN1-D(C)
Cooling only
Side discharge
220V 3Ph 60Hz
10
MRCT-100CWN1-D(C)
Cooling only
Side discharge
15
MRCT-150CWN1-D(C)
Cooling only
Side discharge
20
MRCT-200CWN1-D(C)
Cooling only
Side discharge
25
MRCT-250CWN1-D(C)
Cooling only
Side discharge
Notes: Please refer to specification tables for accurate cooling capacity with kW or Btu/h.
2. External Appearances
7.5ton 10ton
15ton 20ton
25ton

MCAC-RTT6S-201701 Midea R410ATropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz
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3. Nomenclatures
MRCT–075 CWN1 –D(C)
Product design code
Power supply: 220V, 3Ph, 60Hz
Refrigerant type: R410A
Wired controller
Cooling only type
Nominal cooling capacity
ӿӿӿ: ӿӿӿ×0.1ton (7.5ton)
Tropical application
Side discharge type
Rooftop package unit
Midea

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz MCAC-RTT6S-201701
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Part. 2 Performances
1. Features .............................................................................6
2. Specifications .....................................................................8
3. Dimensions drawings .......................................................16
4. Wiring diagrams................................................................26
5. Performance data.............................................................31
6. Electrical data...................................................................46
7. Fan performance data ......................................................47
8. Refrigerant cycle diagram.................................................58
9. Operation limits.................................................................59
10. Noise Criteria (NC) Curves..............................................60
11. Accessories......................................................................62

MCAC-RTT6S-201701 Midea R410ATropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz
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1. Features
Design flexibility.
Compact design and flanges of air flow inlet and outlet as standard. It is suitable for installation
in rooftop and ground.
Durable construction.
Pre-painted exterior cabinet panels pass 1000 hours salt spray test for durability.
Weather-resistant construction with capped steams and sloped top panels design.
The rooftop package air conditioners with special anti-corrosion treatment are suitable for
seaside areas or the areas exposed to acidic substances. (It should be customized.)
Reliable scroll compressor.
Famous brand compressor, it is more reliable. No complex internal suction and discharge
valves for quieter operation and higher reliability. Compact and light-weight design, fewer
moving parts design.
Adjustable pulley
Through changing the working pitch diameter of the pulley mounted on driver shaft, in turn the
revolutions per minute of the driven shaft will increase or decrease to change air volume.
Multi-protection design.
Multi-measurement can ensure units operate normally and reliably:
System current protection;
High/low-pressure switch protection;
Temperature sensor on/off protection, etc.
The three-phase protector can be customized.

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz MCAC-RTT6S-201701
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Easy to installation.
Removable access door on the electric box is standard. It is easy to move the cover of the
electric box. Only connect the wires of power supply, and no need to connect any signal wires.
Reserved external drainage port, quickly and accurately connect the rubber drainage pipe.
The unit provides external pressure gauge ports for convenient and fast checking system
pressure without removing the panel.
System self-diagnostic function.
Press the Check button in Main PCB board, and the LED display of PCB board in unit will
display the normal checking code. If the unit is in running with abnormal operation, the LED
display will show the error code.
EHK (Electrical heater kits) and air intake filter as optional.
Wired controller as standard. Besides Midea controller, other brand thermostat can be matched
as optional solution.
Centralized control function can be achieved through the centralized controller as optional.
MD-NIM01 should be connected between the rooftop package units and centralized controller.

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2. Specifications
Nominal ton
(Ton)
7.5
10
Model
MRCT-075CWN1-D(C)
MRCT-100CWN1-D(C)
Power supply
\
220V, 3Ph, 60Hz
220V, 3Ph, 60Hz
Cooling 1
Cooling capacity
Btu/h
89,000
120,000
kW
26.1
35.2
Power input
kW
7.8
10.7
Cooling 2
Cooling capacity
Btu/h
69.6
100.2
kW
20.4
29.37
Power input
kW
8.6
12.5
Max. input consumption
kW
11.3
17.5
Max. current
A
42.4
57.4
Performance
Indoor air flow
CFM
2,700
4,120
ESP
Pa
Default: 80, 0~250
Default: 90, 0~275
EER 1
Btu/h.W
11.4
11.2
EER 2
Btu/h.W
8.1
8.0
Indoor coil
Number of rows
\
3
4
Fin spacing
mm
1.3
1.5
Fin type
\
Hydrophilic aluminum fin
Hydrophilic aluminum fin
Tube diameter
mm
Φ7
Φ7
Tube type
\
Inner grooved copper pipe
Inner grooved copper pipe
Indoor fan
Type / Quantity
\
Centrifugal / 1
Centrifugal / 1
Drive type
\
Direct
Belt
Motor quantity
\
1
1
Motor model
\
YDK750-6E
YE2-100L1-4-2.2KW
Motor capacitor
\
25µF/450V
\
Motor speed
RPM
1,080/1,010/930
1,700
Compressor
Type / Quantity
\
Scroll / 1
Scroll / 1
Model
\
ZP91KCE-TF5-522
ZP122KCE-TF5-522
Brand
\
Copeland
Copeland
Capacity
W
26,600
36,400
Input
W
8,230
11,000
RLA
A
30.7
37.9
LRA
A
191
240
Refrigerant oil
ml
1,774
2,513
Outdoor coil
Number of rows
\
3
2.5
Fin spacing
mm
1.5
1.5
Fin type
\
Hydrophilic aluminum fin
Hydrophilic aluminum fin
Tube diameter
mm
Φ7
Φ7
Tube type
\
Inner grooved copper pipe
Inner grooved copper pipe

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz MCAC-RTT6S-201701
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Continued:
Nominal ton
(Ton)
7.5
10
Model
MRCT-075CWN1-D(C)
MRCT-100CWN1-D(C)
Outdoor fan
Type / Quantity
\
Axial / 1
Axial / 1
Drive type
\
Direct
Direct
Motor model
\
YS1100-6C
YS1100-6C
Fan speed
RPM
1,100
1,100
Refrigerant
Type / Volume
\
R410A / 3.8kg
R410A / 4.1kg
Control
\
Throttle valve
Throttle valve
Sound pressure level
dB(A)
75.6
75.7
Wired controller
\
KJR-25B
KJR-12B/dP(T)-E
Centralized controller (Optional)
\
No
Yes
Ambient temperature (Cooling)
°C
10~52
10~52
System stage
\
1
1
Dimensions
Net (W×H×D)
mm
1,475×840×1,130
1,483×1,231×1,138
Packing (W×H×D)
mm
1,495×870×1,150
1,500×1,255×1,155
Weight
Net
kg
235
325
Gross
kg
240
335
Notes:
1. Nominal ton only for reference. Cooling capacity as per specifications;
2. Cooling capacity test condition: (1)
Outdoor ambient temperature: 35°C , indoor temperature: 26.7°CDB, 19.4°CWB;
Cooling capacity test condition: (2)
Outdoor ambient temperature: 46.1°C , indoor temperature: 26.7°CDB, 19.4°CWB;
3. Units are suitable for operation to ±20% of nominal indoor air flow.
4. ESP: external static pressure;
5. Specifications are subject to change without prior notice for product improvement.