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Midea MEHSU-48CSF2 - User Manual

Midea MEHSU-48CSF2
81 pages
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CONTENTS
1. Precaution ..................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning .......................................................................................................................................... 1
2. Part Names and Features ............................................................................................................................ 4
2.1 Model Names of Indoor/Outdoor units .......................................................................................... 4
2.2 Part names of Indoor/Outdoor units .............................................................................................. 5
2.3 Features ......................................................................................................................................... 9
3. Dimension ................................................................................................................................................... 18
3.1 Indoor Unit ................................................................................................................................... 18
3.2 Outdoor Unit ................................................................................................................................ 23
4. Service Space ............................................................................................................................................. 25
4.1 Indoor Unit ................................................................................................................................... 25
4.2 Outdoor Unit ................................................................................................................................ 27
5. Refrigerant Cycle Diagram ........................................................................................................................ 28
6. Wiring Diagram ........................................................................................................................................... 29
6.1 Indoor Unit ................................................................................................................................... 29
6.2 Outdoor Unit ................................................................................................................................ 34
7. Fan Curves .................................................................................................................................................. 41
8 Electric Characteristics .............................................................................................................................. 48
9 Sound Level ................................................................................................................................................. 49
9.1 Indoor unit .................................................................................................................................... 49
9.2 Outdoor unit ................................................................................................................................. 52
10 Accessories ............................................................................................................................................... 53
11 The Specification of Power ...................................................................................................................... 55
12 Installation Details .................................................................................................................................... 57
12.1 Location selection ................................................................................................................... 57
12.2 Indoor unit installation ............................................................................................................. 57
12.3 Outdoor unit installation .......................................................................................................... 64
12.4 Refrigerant pipe installation .................................................................................................... 65
12.5 Drainage pipe installation ....................................................................................................... 69
12.6 Vacuum Drying and Leakage Checking ................................................................................. 72
12.7 Additional refrigerant charge .................................................................................................. 73
12.8 Engineering of insulation ........................................................................................................ 74
12.9 Engineering of electrical wiring ............................................................................................... 75
12.10 Test operation ...................................................................................................................... 75
13. Operation Characteristics ....................................................................................................................... 77
14. Electronic Function .................................................................................................................................. 78
14.1 Abbreviation ............................................................................................................................... 78
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Midea MEHSU-48CSF2 Specifications

General IconGeneral
RefrigerantR410A
Weight (Indoor Unit)88.2 lbs
Weight (Outdoor Unit)149.9 lbs
TypeSplit System
HSPF8.5
Cooling Capacity48000 BTU
Heating Capacity48000 BTU

Summary

1. Precaution

1.1 Safety Precaution

General safety instructions to prevent injury and property damage during operation and service.

1.2 Warning

Critical warnings regarding electrical shock, fire, and product damage during installation and use.

5. Refrigerant Cycle Diagram

6. Wiring Diagram

6.1 Indoor Unit

Wiring diagrams for various indoor unit models (MEHSU series) with switch settings and main control boards.

6.2 Outdoor Unit

Wiring diagrams for outdoor units (MCHSU series) showing connections for components like compressor, fan, and sensors.

11 The Specification of Power

12 Field Wiring

12.1 Location selection

12.2 Indoor unit installation

12.2.2 Compact cassette indoor unit installation

Covers installation procedures for compact cassette indoor units, including service space, bolt pitch, and pendant bolt installation.

12.2.3 Console indoor unit installation

Details installation for Console indoor units, including service space and main body installation.

14.2.4 Ceiling-floor unit installation

Provides installation steps for Ceiling-floor units, covering service space and bolt pitch.

12.2.5 Slim cassette indoor unit installation

Details installation procedures for Slim cassette indoor units, including service space, bolt pitch, and pendant bolt installation.

12.4 Refrigerant pipe installation

12.4.1 Maximum pipe length and height drop

Provides maximum allowable pipe length and height drop for different unit capacities.

12.4.3 First-Time Installation

Details air purging and vacuum pump procedures for initial system setup to remove moisture and air.

12.4.4 Adding Refrigerant after Long-Term System Operation

Instructions for adding refrigerant, including charging procedures and leak checks.

12.4.5 Re-installation When Indoor Unit Requires Repairs

Procedures for collecting and purging refrigerant when an indoor unit needs repair.

12.6 Vacuum Drying and Leakage Checking

12.7 Additional refrigerant charge

12.8 Engineering of insulation

12.9 Engineering of electrical wiring

12.10 Test operation

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