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Installer and user reference guide

VRV system air conditioner

EKVDX32A2VEB

EKVDX50A2VEB

EKVDX80A2VEB

EKVDX100A2VEB

Table of contents

Installer and user reference guide

EKVDX32~100A2VEB

VRV system air conditioner

4P664010-1A – 2022.05

Table of contents

1 About the documentation 5

1.1 About this document ...................................................................................................................................................... 5

2 General safety precautions 7

2.1 About the documentation .............................................................................................................................................. 7

2.1.1 Meaning of warnings and symbols ................................................................................................................ 7

2.2 For the installer............................................................................................................................................................... 8

2.2.1 General ........................................................................................................................................................... 8

2.2.2 Installation site ............................................................................................................................................... 9

2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 9

2.2.4 Electrical ......................................................................................................................................................... 11

3 Specific installer safety instructions 14

3.1 Instructions for equipment using R32 refrigerant ......................................................................................................... 17

For the user 19

4 User safety instructions 20

4.1 General............................................................................................................................................................................ 20

4.2 Instructions for safe operation ....................................................................................................................................... 21

5 About the system 26

5.1 System layout.................................................................................................................................................................. 26

5.2 Compatibility with VAM models..................................................................................................................................... 28

6 User interface 29

7 Operation 30

7.1 Before operation............................................................................................................................................................. 30

7.2 Operation range.............................................................................................................................................................. 30

7.3 About operation modes.................................................................................................................................................. 31

7.3.1 Basic operation modes................................................................................................................................... 31

7.3.2 Special heating operation modes................................................................................................................... 32

7.4 To operate the system.................................................................................................................................................... 32

8 Energy saving and optimum operation 33

9 Maintenance and service 34

9.1 Cleaning the air outlet .................................................................................................................................................... 34

9.1.1 To clean the air outlet .................................................................................................................................... 34

9.2 Maintenance before a long stop period......................................................................................................................... 34

9.3 Maintenance after a long stop period............................................................................................................................ 34

9.4 About the refrigerant...................................................................................................................................................... 34

9.4.1 About R32 refrigerant leakage safety ............................................................................................................ 35

10 Troubleshooting 37

10.1 Symptoms that are NOT system malfunctions............................................................................................................... 38

10.1.1 Symptom: The system does not operate....................................................................................................... 38

10.1.2 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 39

10.1.3 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 39

10.1.4 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 39

10.1.5 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 39

10.1.6 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 39

10.1.7 Symptom: Dust comes out of the unit........................................................................................................... 40

10.1.8 Symptom: The units can give off odours ....................................................................................................... 40

11 Relocation 41

12 Disposal 42

For the installer 43

13 About the box 44

13.1 Overview: About the box ................................................................................................................................................ 44

13.2 Indoor unit ...................................................................................................................................................................... 44