Daikin FXFA20A2VEB Manual de Usario

Daikin aire acondicionado FXFA20A2VEB

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Installer and user reference guide

VRV system air conditioner

FXFA20A2VEB

FXFA25A2VEB

FXFA32A2VEB

FXFA40A2VEB

FXFA50A2VEB

FXFA63A2VEB

FXFA80A2VEB

FXFA100A2VEB

FXFA125A2VEB

Table of contents

Installer and user reference guide

FXFA20~125A2VEB

VRV system air conditioner

4P599624-1C – 2020.12

Table of contents

1 About the documentation 4

1.1 About this document ...................................................................................................................................................... 4

2 General safety precautions 5

2.1 About the documentation .............................................................................................................................................. 5

2.1.1 Meaning of warnings and symbols ................................................................................................................ 5

2.2 For the installer............................................................................................................................................................... 6

2.2.1 General ........................................................................................................................................................... 6

2.2.2 Installation site ............................................................................................................................................... 7

2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 7

2.2.4 Electrical ......................................................................................................................................................... 9

3 Specific installer safety instructions 12

3.1 Instructions for equipment using R32 refrigerant ......................................................................................................... 14

3.1.1 Installation space requirements..................................................................................................................... 15

For the user 16

4 User safety instructions 17

4.1 General ............................................................................................................................................................................ 17

4.2 Instructions for safe operation ....................................................................................................................................... 18

5 About the system 23

5.1 System layout.................................................................................................................................................................. 23

5.2 Information requirements for fan coil units................................................................................................................... 24

6 User interface 25

7 Before operation 26

8 Operation 27

8.1 Operation range.............................................................................................................................................................. 27

8.2 About operation modes.................................................................................................................................................. 27

8.2.1 Basic operation modes................................................................................................................................... 27

8.2.2 Special heating operation modes................................................................................................................... 28

8.2.3 Adjusting the airflow direction....................................................................................................................... 28

8.2.4 Active circulation airflow................................................................................................................................ 29

8.3 To operate the system .................................................................................................................................................... 29

9 Energy saving and optimum operation 30

10 Maintenance and service 31

10.1 Precautions for maintenance and service ...................................................................................................................... 31

10.2 Cleaning the air filter, suction grille, air outlet and outside panels............................................................................... 32

10.2.1 To clean the air filter ...................................................................................................................................... 32

10.2.2 To clean the suction grille .............................................................................................................................. 33

10.2.3 To clean the air outlet and outside panels .................................................................................................... 34

10.3 Maintenance before a long stop period......................................................................................................................... 35

10.4 Maintenance after a long stop period............................................................................................................................ 35

10.5 About the refrigerant...................................................................................................................................................... 35

10.5.1 About the refrigerant leakage sensor ............................................................................................................ 36

11 Troubleshooting 38

11.1 Symptoms that are NOT system malfunctions............................................................................................................... 39

11.1.1 Symptom: The system does not operate....................................................................................................... 39

11.1.2 Symptom: The fan speed does not correspond to the setting...................................................................... 39

11.1.3 Symptom: The fan direction does not correspond to the setting................................................................. 39

11.1.4 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 40

11.1.5 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 40

11.1.6 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 40

11.1.7 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 40

11.1.8 Symptom: Noise of air conditioners (Indoor unit, outdoor unit).................................................................. 40

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

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

12 Relocation 41

Table of contents

Installer and user reference guide

FXFA20~125A2VEB

VRV system air conditioner

4P599624-1C – 2020.12

13 Disposal 42

For the installer 43

14 About the box 44

14.1 Overview: About the box ................................................................................................................................................ 44

14.2 Indoor unit ...................................................................................................................................................................... 44

14.2.1 To unpack and handle the unit ...................................................................................................................... 44

14.2.2 To remove the accessories from the indoor unit .......................................................................................... 45

15 About the units and options 46

15.1 Identification ................................................................................................................................................................... 46

15.1.1 Identification label: Indoor unit ..................................................................................................................... 46

15.2 About the indoor unit ..................................................................................................................................................... 46

15.3 System layout.................................................................................................................................................................. 46

15.4 Combining units and options.......................................................................................................................................... 47

15.4.1 Possible options for the indoor unit............................................................................................................... 47

16 Unit installation 49

16.1 Preparing the installation site......................................................................................................................................... 49

16.1.1 Installation site requirements of the indoor unit .......................................................................................... 49

16.2 Mounting the indoor unit ............................................................................................................................................... 51

16.2.1 Guidelines when installing the indoor unit.................................................................................................... 51

16.2.2 Guidelines when installing the drain piping................................................................................................... 54

17 Piping installation 58

17.1 Preparing refrigerant piping ........................................................................................................................................... 58

17.1.1 Refrigerant piping requirements.................................................................................................................... 58

17.1.2 Refrigerant piping insulation.......................................................................................................................... 59

17.2 Connecting the refrigerant piping .................................................................................................................................. 59

17.2.1 About connecting the refrigerant piping ....................................................................................................... 59

17.2.2 Precautions when connecting the refrigerant piping.................................................................................... 60

17.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 60

17.2.4 Pipe bending guidelines ................................................................................................................................. 61

17.2.5 To flare the pipe end ...................................................................................................................................... 61

17.2.6 To connect the refrigerant piping to the indoor unit .................................................................................... 62

18 Electrical installation 64

18.1 About connecting the electrical wiring .......................................................................................................................... 64

18.1.1 Precautions when connecting the electrical wiring....................................................................................... 64

18.1.2 Guidelines when connecting the electrical wiring......................................................................................... 65

18.1.3 Specifications of standard wiring components.............................................................................................. 66

18.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 67

19 Commissioning 69

19.1 Overview: Commissioning .............................................................................................................................................. 69

19.2 Precautions when commissioning.................................................................................................................................. 69

19.3 Checklist before commissioning..................................................................................................................................... 70

19.4 To perform a test run...................................................................................................................................................... 70

20 Configuration 71

20.1 Field setting..................................................................................................................................................................... 71

21 Hand-over to the user 75

22 Troubleshooting 76

22.1 Solving problems based on error codes ......................................................................................................................... 76

22.1.1 Error codes: Overview .................................................................................................................................... 76

23 Disposal 78

24 Technical data 79

24.1 Wiring diagram................................................................................................................................................................ 79

24.1.1 Unified wiring diagram legend ....................................................................................................................... 79

25 Glossary 82