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RXYQ8T7Y1B
Daikin RXYQ8T7Y1B User Manual
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Installer and user reference guide
VRV IV system air conditioner
English
Installer and user
reference guide
VRV IV system air conditioner
RYYQ8T7Y1B*
RYYQ10T7Y1B*
RYYQ12T7Y1B*
RYYQ14T7Y1B*
RYYQ16T7Y1B*
RYYQ18T7Y1B*
RYYQ20T7Y1B*
RYMQ8T7Y1B*
RYMQ10T7Y1B*
RYMQ12T7Y1B*
RYMQ14T7Y1B*
RYMQ16T7Y1B*
RYMQ18T7Y1B*
RYMQ20T7Y1B*
RXYQ8T7Y1B*
RXYQ10T7Y1B*
RXYQ12T7Y1B*
RXYQ14T7Y1B*
RXYQ16T7Y1B*
RXYQ18T7Y1B*
RXYQ20T7Y1B*
2
Table of Contents
Default Chapter
2
Table of Contents
2
1 General Safety Precautions
3
About the Documentation
3
Meaning of Warnings and Symbols
3
For the User
4
For the Installer
4
General
4
Installation Site
5
Refrigerant
5
Brine
6
Water
6
Electrical
6
2 About the Documentation
7
About this Document
7
For the Installer
7
3 About the Box
7
Overview: about the Box
7
To Unpack the Outdoor Unit
7
To Remove the Accessories from the Outdoor Unit
8
Accessory Pipes: Diameters
8
To Remove the Transportation Stay
8
4 About the Units and Options
8
Overview: about the Units and Options
8
Identification Label: Outdoor Unit
9
About the Outdoor Unit
9
System Layout
9
Combining Units and Options
9
About Combining Units and Options
9
Possible Combinations of Indoor Units
9
Possible Combinations of Outdoor Units
10
Possible Options for the Outdoor Unit
10
5 Preparation
10
Overview: Preparation
10
Preparing Installation Site
11
Installation Site Requirements of the Outdoor Unit
11
Additional Installation Site Requirements of the Outdoor Unit in Cold Climates
12
Securing Safety against Refrigerant Leaks
12
Preparing Refrigerant Piping
13
Refrigerant Piping Requirements
13
To Select the Piping Size
13
To Select Refrigerant Branch Kits
15
About the Piping Length
15
Piping Length: VRV DX Only
16
Piping Length: VRV DX and Hydrobox
17
Piping Length: VRV DX and RA DX
18
Requirements in Case of FXTQ Indoor Units
18
Multiple Outdoor Units: Possible Layouts
19
Preparing Electrical Wiring
20
About Electrical Compliance
20
Safety Device Requirements
20
6 Installation
21
Overview: Installation
21
Opening the Units
21
To Open the Outdoor Unit
21
To Open the Electrical Component Box of the Outdoor Unit
21
Mounting the Outdoor Unit
22
To Provide the Installation Structure
22
Connecting the Refrigerant Piping
22
Precautions When Connecting Refrigerant Piping
22
About Connecting the Refrigerant Piping
22
To Route the Refrigerant Piping
23
To Connect the Refrigerant Piping to the Outdoor Unit
23
To Connect the Multi Connection Piping Kit
23
Multiple Outdoor Units: Knockout Holes
24
To Connect the Refrigerant Branching Kit
24
To Protect against Contamination
24
To Braze the Pipe End
24
Using the Stop Valve and Service Port
24
To Remove the Pinched Pipes
25
Checking the Refrigerant Piping
26
About Checking the Refrigerant Piping
26
Checking Refrigerant Piping: General Guidelines
27
Checking Refrigerant Piping: Setup
27
To Perform a Leak Test
27
To Perform Vacuum Drying
27
To Insulate the Refrigerant Piping
27
Charging Refrigerant
28
Precautions When Charging Refrigerant
28
About Charging Refrigerant
28
To Determine the Additional Refrigerant Amount
28
To Charge Refrigerant: Flow Chart
30
To Charge Refrigerant
32
Step 6A: to Automatically Charge Refrigerant
33
Step 6B: to Manually Charge Refrigerant
34
Error Codes When Charging Refrigerant
35
Checks after Charging Refrigerant
35
To Fix the Fluorinated Greenhouse Gases Label
35
Connecting the Electrical Wiring
35
Precautions When Connecting Electrical Wiring
35
Field Wiring: Overview
36
About the Electrical Wiring
36
Guidelines When Knocking out Knockout Holes
37
To Route and Fix the Transmission Wiring
37
To Connect the Transmission Wiring
37
To Finish the Transmission Wiring
38
To Route and Fix the Power Supply
38
To Connect the Power Supply
38
Configuration
39
Overview: Configuration
39
Making Field Settings
39
About Making Field Settings
39
Field Setting Components
39
To Access the Field Setting Components
40
To Access Mode 1 or 2
40
To Use Mode 1
40
To Use Mode 2
41
Mode 1: Monitoring Settings
41
Mode 2: Field Settings
42
To Connect the PC Configurator to the Outdoor Unit
45
Energy Saving and Optimum Operation
45
Available Main Operation Methods
45
Available Comfort Settings
46
Example: Automatic Mode During Cooling
47
Example: Automatic Mode During Heating
47
Using the Leak Detection Function
48
About Automatic Leak Detection
48
To Manually Perform a Leak Detection
48
8 Commissioning
48
Overview: Commissioning
48
Precautions When Commissioning
49
Checklist before Commissioning
49
About Test Run
49
To Perform a Test Run
50
Correcting after Abnormal Completion of the Test Run
50
Operating the Unit
51
9 Maintenance and Service
51
Overview: Maintenance and Service
51
Maintenance Safety Precautions
51
To Prevent Electrical Hazards
51
About Service Mode Operation
51
To Use Vacuum Mode
51
To Recover Refrigerant
51
10 Troubleshooting
52
Overview: Troubleshooting
52
Solving Problems Based on Error Codes
52
Error Codes: Overview
52
11 Disposal
55
12 Technical Data
56
Overview: Technical Data
56
Dimensions: Outdoor Unit
56
Service Space: Outdoor Unit
57
Components: Outdoor Unit
58
Components: Electrical Component Box
64
Piping Diagram: Outdoor Unit
65
Wiring Diagram: Outdoor Unit
68
Technical Specifications: Outdoor Unit
77
Capacity Table: Indoor Unit
79
For the User
80
13 About the System
80
System Layout
80
14 User Interface
80
15 Before Operation
80
16 Operation
81
Operation Range
81
Operating the System
81
About Operating the System
81
About Cooling, Heating, Fan Only, and Automatic Operation
81
About the Heating Operation
81
To Operate the System (WITHOUT Cool/Heat Changeover Remote Control Switch)
81
To Operate the System (with Cool/Heat Changeover Remote Control Switch)
82
Using the Dry Program
82
About the Dry Program
82
To Use the Dry Program (WITHOUT Cool/Heat Changeover Remote Control Switch)
82
To Use the Dry Program (with Cool/Heat Changeover Remote Control Switch)
82
Adjusting the Air Flow Direction
82
About the Air Flow Flap
82
Setting the Master User Interface
83
About Setting the Master User Interface
83
To Designate the Master User Interface (VRV DX and Hydrobox)
83
To Designate the Master User Interface (VRV DX and RA DX)
83
About Control Systems
83
17 Energy Saving and Optimum Operation
84
Available Main Operation Methods
84
Available Comfort Settings
84
18 Maintenance and Service
84
Maintenance after a Long Stop Period
85
Maintenance before a Long Stop Period
85
About the Refrigerant
85
After-Sales Service and Warranty
85
Warranty Period
85
Recommended Maintenance and Inspection
85
Recommended Maintenance and Inspection Cycles
86
Shortened Maintenance and Replacement Cycles
86
19 Troubleshooting
86
Error Codes: Overview
87
Symptoms that Are NOT System Malfunctions
88
Symptom: the System Does Not Operate
88
Symptom: Cool/Heat Cannot be Changed over
88
Symptom: Fan Operation Is Possible, but Cooling and Heating Do Not Work
88
Symptom: the Fan Strength Does Not Correspond to the Setting
88
Symptom: the Fan Direction Does Not Correspond to the Setting
88
Symptom: White Mist Comes out of a Unit (Indoor Unit)
88
Symptom: White Mist Comes out of a Unit (Indoor Unit, Outdoor Unit)
88
Symptom: the User Interface Display Reads "U4" or "U5" and Stops, but then Restarts after a few Minutes
88
Symptom: Noise of Air Conditioners (Indoor Unit)
88
Symptom: the Display Shows "88
89
Symptom: the Compressor in the Outdoor Unit Does Not Stop after a Short Heating Operation
89
Symptom: the Inside of an Outdoor Unit Is Warm Even When the Unit Has Stopped
89
Symptom: Hot Air Can be Felt When the Indoor Unit Is Stopped
89
Solving Problems Based on Symptoms
89
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Installation And Operation Manual
72 pages
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Daikin RXYQ8T7Y1B Specifications
General
Series
VRV IV-S
Type
Heat Pump
Cooling Capacity (kW)
22.4
Heating Capacity (kW)
25.0
Refrigerant
R410A
Power Supply
380-415V / 50Hz
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