Daikin VRV IV User Manual

Name: Daikin VRV IV
Brand: Daikin
Rating: 5 (1 reviews)

156 pages

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Installer and user reference guide

VRV IV system air conditioner

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Default Chapter2
- Table of Contents2
1 About the Documentation6
- About this Document6
- Meaning of Warnings and Symbols6
2 General Safety Precautions8
- For the Installer8
3 Specific Installer Safety Instructions14
For the User17
4 User Safety Instructions18
- General18
- Instructions for Safe Operation19
5 About the System22
- System Layout23
6 User Interface24
7 Before Operation25
8 Operation26
- Operation Range26
- Operating the System26
- Using the Dry Program29
- Adjusting the Air Flow Direction30
  - About the Air Flow Flap30
- Setting the Master User Interface31
  - About Setting the Master User Interface31
  - To Designate the Master User Interface (VRV DX and Hydrobox)31
- About Control Systems32
9 Energy Saving and Optimum Operation33
- Available Main Operation Methods33
- Available Comfort Settings34
10 Maintenance and Service35
- Maintenance after a Long Stop Period35
- Maintenance before a Long Stop Period36
- About the Refrigerant36
- After-Sales Service and Warranty36
11 Troubleshooting39
- Error Codes: Overview40
- Symptoms that Are NOT System Malfunctions43
12 Relocation46
13 Disposal47
14 Technical Data48
- Information Requirements for Eco Design48
For the Installer49
15 About the Box50
- About LOOP by DAIKIN50
- Overview: about the Box50
- To Unpack the Outdoor Unit51
- To Remove the Accessories from the Outdoor Unit51
- Accessory Pipes: Diameters52
- To Remove the Transportation Stay52
16 About the Units and Options54
- Overview: about the Units and Options54
- Identification Label: Outdoor Unit54
- About the Outdoor Unit55
- System Layout55
- Combining Units and Options56
17 Unit Installation59
- Preparing the Installation Site59
- Opening the Unit64
- Mounting the Outdoor Unit66
  - To Provide the Installation Structure66
18 Piping Installation68
- Preparing Refrigerant Piping68
- Connecting the Refrigerant Piping81
- Checking the Refrigerant Piping90
- Charging Refrigerant94
19 Electrical Installation102
- About Connecting the Electrical Wiring102
- To Route and Fix the Transmission Wiring108
- To Connect the Transmission Wiring108
- To Finish the Transmission Wiring109
- To Route and Fix the Power Supply110
- To Connect the Power Supply110
- To Check the Insulation Resistance of the Compressor112
20 Configuration113
- Overview: Configuration113
- Making Field Settings113
- Energy Saving and Optimum Operation126
21 Commissioning133
- Overview: Commissioning133
- Precautions When Commissioning133
- Checklist before Commissioning134
- About the Test Run135
- To Perform a Test Run136
- Correcting after Abnormal Completion of the Test Run137
- Operating the Unit137
22 Hand-Over to the User138
23 Maintenance and Service139
- Maintenance Safety Precautions139
  - To Prevent Electrical Hazards139
- About Service Mode Operation140
  - To Use Vacuum Mode140
  - To Recover Refrigerant140
24 Troubleshooting142
- Solving Problems Based on Error Codes142
- Error Codes: Overview142
25 Disposal148
26 Technical Data149
- Service Space: Outdoor Unit149
- Piping Diagram: Outdoor Unit151
- Wiring Diagram: Outdoor Unit151
27 Glossary154

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Questions and Answers:

R
Rebecca SpenceJul 25, 2025
Why is my Daikin Air Conditioner not cooling or heating enough?
- C
  Christine MeyersJul 25, 2025
  Insufficient cooling or heating can occur for several reasons. Make sure that the air inlet or outlet of the outdoor or indoor unit is not blocked by obstacles, and remove any obstructions to ensure free airflow. Also, check if the air filter is clogged. Verify the temperature and fan speed settings on the user interface. Ensure doors and windows are closed to prevent drafts. Consider if there are too many people in the room or excessive heat sources. Direct sunlight can also affect performance, so use curtains or blinds. Lastly, check if the airflow angle is properly adjusted.

Daikin VRV IV Specifications

General

Type	Variable Refrigerant Volume (VRV)
Series	VRV IV
Refrigerant	R410A
Energy Efficiency	High
Operating Temperature Range (Cooling)	-5°C to 46°C
Operating Temperature Range (Heating)	-20°C to 15.5°C
Installation	Professional installation required
Control	Centralized control system
Indoor Unit Options	Various types including ceiling cassette, wall-mounted, ducted, and floor-standing
Power Supply	380-415V, 3-phase, 50Hz