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MRCT-250CWN1-D(C)
Midea MRCT-250CWN1-D(C) User Manual
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Midea R410A
T
ropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz
M
CAC-RTT6S-201701
81
High temp
erature prote
ction of
conden
ser :
Low temperat
ure pr
otection of
evaporator:
Anti
-freezing protecti
on of ev
aporator :
81
83
Table of Contents
Content
2
Part. 1 General Information
3
Product Lineup
4
External Appearances
4
Nomenclatures
5
Table of Contents
6
Part. 2 Performances
6
Design Flexibility
7
Durable Construction
7
Features
7
Reliable Scroll Compressor
7
Easy to Installation
8
System Self-Diagnostic Function
8
Specifications
9
Dimensions Drawings
17
Wiring Diagrams
27
Cooling Capacity
32
Performance Data
32
Electrical Data
47
Fan Performance Data
48
Blower Drive Options
49
Example for Selection Process
49
Selection of New Desired Point
49
Refrigerant Cycle Diagram
59
Operation Limits
60
Noise Criteria (NC) Curves
61
Accessories
63
Part. 3 Installations
64
General Information
65
Clearances
66
Horizontal Airflow Application
66
Recommendations
66
Lifting
67
For Ground Level Installations
68
Installation
68
Condensate Drainage
69
Duct Work
70
Electrical Wiring
70
Wiring Provision
70
Main Power Supply Parameters
71
Power Supply Wiring Diagram
72
Wired Controller Wiring Diagram (Standard Wired Controller)
72
Before Starting Unit
73
Start-Up
73
Wired Controller Wiring Diagram (Optional Wired Controller)
73
Functions
74
Safety Control
74
Shut-Down the Unit
74
Starting the Unit
74
Error & Protection Code
75
Compressor Sequence Error or Phase Default
77
Phase Sequence Error or Phase Default
77
Ambient Temperature Sensor (T4) Error
78
Condenser Pipe Temperature Sensor (T3) Error
78
Evaporator Pipe Temperature Sensor (T2) Error
78
Indoor Side Room Temperature Sensor (T1) Error
78
High Discharge Temperature Protection
79
High Pressure Protection
79
Wired Controller Communication Error
79
Eeprom Error
80
Low Pressure Protection
80
Comprehensive Protection of Outdoor Side Fan Motor
81
Over-Current Protection of Indoor Side Fan Motor
81
Anti-Freezing Protection of Evaporator
82
High Temperature Protection of Condenser
82
Low Temperature Protection of Evaporator
82
Maintenance
83
Protection of Outdoor Ambient Temperature
83
Regular Maintenance
83
Belt Tension Is Measured by Belt Tension Indicator
84
Regulating Belt of Tension
84
Air Intake Filter Clean (the Filter Should be Customized)
85
Clean the Air Filter
85
Dismantle the Air Filter
85
Re-Install the Air Filter
85
Appendix: - Temperature Sensor
87
Airflow Pressure Drop
90
Appendix: - EHK (Electrical Heater Kits)
90
EHK Parameter
90
Assemble
91
Wiring
92
Electric Diagram – 15Kw/20Kw EHK:
92
Electric Diagram – 30Kw/40Kw EHK
93
Part. 4 Controller
95
Introduction of Indicators Function
96
Operation Mode Indication
96
Wired Controller Specifications
96
Wired Controller: KJR-12B
96
Follow Me Function
97
Lock
97
ON/OFF Indication
97
Timer ON/OFF
97
Introduction of Buttons
98
Mode Button
98
Timer off Button
98
TIMER on Button
98
AUXIL HEATER Button
99
FOLLOW ME Button
99
ON/OFF Button
99
RESET Button
99
Automatic Operation
100
Cool / Heat / Fan Only Mode Operation
100
Dry Operation
100
Operation
100
Timer Setting
101
Timer Setting – Timer off Only
101
Timer Setting – Timer on Only
101
Timer-On and Timer-Off both
101
Change Timer
102
Installation of Wired Controller
102
Accessories
103
Preparing at Site
103
Wiring Principle
103
Dimension of Rear Cover as Following Picture (Unit: MM)
104
Wired Controller: KJR-25B
105
Fan Operation
108
Operation Instructions
108
Cooling Operation
109
Emergency Operation
109
Heating Operation
109
Day and Time Setting
110
Energy Monitor
111
Reviewing the Current Temperature Setting
111
Filter Monitor
112
Keyboard Lock
112
Electric / Gas Switch
113
Low Battery Warning
113
Wired Controller: KJR-23B
115
Fan Switch
116
Operation Introduction
116
Review Current Set Temperature
116
System Selector Switch
116
Setting New Temperature
117
Span Setting
117
Auto Turn-On
118
Backlight
118
Changing the Battery
118
Wiring of the Wired Controller
119
Mount Wall-Plate and Controller
121
Centralized Controller Specifications
122
Centralized Controller: MD-CCM03(A) (Optional)
122
Performance Features
122
Keypad of Centralized Controller
123
System Composition
128
Keywords and General Function Description
129
Power on or Reset
129
Network Area Address of Centralized Controller
129
State Indication
129
Locking of Centralized Controller
130
Mode Locking Function
130
Emergent Shutdown and Compulsory Startup
130
Data Display Handling
131
General Display Data Is Displayed in All Display Pages
131
General Display Data Entries
131
Indoor Temperature Display
132
Liquid Crystal Matrix Display Description
132
LCD Display Description
133
Description of the Standby Page
133
Description of the Query Page
133
Description of the Setting Page
134
Fault Page Display Description
134
Fault Code Table
135
Protection Code Table
135
Outlook of MD-NIM01
136
Dimension of MD-N1M01
136
The Installation of Centralized Controller
137
The Wire Connection
138
System Wiring Instruction
139
Wiring Diagram of Building Network Air Conditioning System
139
Wiring Diagram with Good Communication Effect
139
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Midea MRCT-250CWN1-D(C) Specifications
General
Brand
Midea
Model
MRCT-250CWN1-D(C)
Category
Air Conditioner
Language
English
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