Daikin FXFA20A2VEB

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17 | Piping installation

Installer and user reference guide

FXFA20~125A2VEB

VRV system air conditioner

4P599624-1A – 2020.06

NOTICE

Make sure to insulate all refrigerant piping. Any exposed piping might cause

condensation.

Main Page

Default Chapter2
- Table of Contents2
1 About the Documentation4
- About this Document4
2 General Safety Precautions5
- About the Documentation5
  - Meaning of Warnings and Symbols5
- For the Installer6
3 Specific Installer Safety Instructions16
For the User19
4 User Safety Instructions20
- General20
- Instructions for Safe Operation21
5 About the System26
- System Layout26
- Information Requirements for Fan Coil Units27
6 User Interface28
7 Before Operation29
8 Operation30
- Operation Range30
- About Operation Modes30
- To Operate the System32
9 Energy Saving and Optimum Operation33
10 Maintenance and Service34
- Precautions for Maintenance and Service34
- Cleaning the Air Filter, Suction Grille, Air Outlet and Outside Panels35
- Maintenance before a Long Stop Period38
- Maintenance after a Long Stop Period38
- About the Refrigerant38
  - About the Refrigerant Leakage Sensor39
11 Troubleshooting41
- Symptoms that Are NOT System Malfunctions42
12 Relocation44
For the Installer46
14 About the Box47
- Overview: about the Box47
- Indoor Unit47
  - To Unpack and Handle the Unit47
  - To Remove the Accessories from the Indoor Unit48
15 About the Units and Options49
- Identification49
  - Identification Label: Indoor Unit49
- About the Indoor Unit49
- System Layout49
- Combining Units and Options50
  - Possible Options for the Indoor Unit50
16 Unit Installation52
- Preparing the Installation Site52
  - Installation Site Requirements of the Indoor Unit52
- Mounting the Indoor Unit54
  - Guidelines When Installing the Indoor Unit54
  - Guidelines When Installing the Drain Piping57
17 Piping Installation61
- Preparing Refrigerant Piping61
  - Refrigerant Piping Requirements61
  - Refrigerant Piping Insulation62
- Connecting the Refrigerant Piping62
18 Electrical Installation67
- About Connecting the Electrical Wiring67
- To Connect the Electrical Wiring to the Indoor Unit70
19 Commissioning72
- Overview: Commissioning72
- Precautions When Commissioning72
- Checklist before Commissioning73
- To Perform a Test Run73
20 Configuration74
- Field Setting74
21 Hand-Over to the User78
22 Troubleshooting79
- Solving Problems Based on Error Codes79
  - Error Codes: Overview79
23 Disposal81
24 Technical Data82
- Wiring Diagram82
  - Unified Wiring Diagram Legend82
25 Glossary85

Daikin FXFA20A2VEB - Page 66

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