Daikin Reyq96mtju User manual

Design, Installation & Testing Instruction

R410A Heat Recovery 60Hz

REYQ96MTJU

Si39-406

Preface

This system is a modular zone controllable air conditioning system of great sophistication which is capable of assembly in a

variety of different configurations. It would, however, be no exaggeration to say that the full potential of the systems functions can

only be achieved in combination with the skills of those involved in the design of the equipment itself and those responsible for the

installation work.

As the move towards intelligent buildings has gathered momentum, so we have also been seeing ever more a growing demand for

a wider range of independently controllable building related functions.

Against this background there have also quite naturally been calls for the development of more distributed types of air conditioning

systems while at the same time taking full account of the need to use energy economically by demand matching in view of the

huge annual increases in the demand for electric power seen in recent years.

We have therefore prepared this installation manual to enable installation work to be handled confidently on the basis of a clear

understanding of the special features of this system. We have paid particular attention to points of difference in installation

procedure between this system and the more traditional package and room air conditioning system.

The manual is designed specifically to cater for those supervising installation work and concentrates on those products which are

currently on the market. Essential points which need to be taken into consideration when designing an appropriate configuration

for the system and in each of the separate installation processes have also been included.

We have also added a section covering problems which have arisen in connection with installation work undertaken to date in an

attempt to prevent the recurrence of the same problems.

Please be sure to read this manual thoroughly before starting installation work in order to ensure that all such work is carried out

with maximum efficiency and to maximum effect.

The following technical documents are also available from Daikin. Please use these documents together with this manual to

conduct efficient servicing.

Service Manual VRV R410A Heat Recovery 60Hz Series Si39-405 Sept., 2004.

Oct., 2004

After Sales Service Division

Si39-406

Table of Contents i

System

SystemSystem

System

R410A PLUS Series

R410A PLUS SeriesR410A PLUS Series

R410A PLUS Series

Part 1 General Information .............................................................. 1

1. Product Outline ...........................................................................................2

1.1 Model Names of Indoor/Outdoor Units......................................................... 2

1.2 External Appearance.................................................................................... 3

1.3 Model Selection............................................................................................ 4

2. Points to Bear in Mind at the System Design..............................................5

2.1 Points Relating to the Performance of the Air Conditioning Units ................ 5

2.2 The Installation is of Vital Importance .......................................................... 7

2.3 Striking a Balance between System Installation and General

Construction Work (Comprehensive Flow Chart)......................................... 8

2.4 Points to Bear in Mind when Preparing the Contract Drawings ................... 9

3. Installation .................................................................................................13

3.1 Step by Step Installation Procedure........................................................... 13

3.2 Work Involved in Individual Operations and Points to be Borne in Mind.... 14

4. Test Operation ..........................................................................................63

4.1 Procedure and Outline ............................................................................... 63

4.2 Operation When Power is Turned On ........................................................ 66

4.3 Outdoor Unit PC Board Layout................................................................... 67

4.4 Field Setting ............................................................................................... 68

5. Caution for Refrigerant Leaks ...................................................................96

5.1 Caution for Refrigerant Leaks .................................................................... 96

6. Hand Over to Customer ............................................................................98

6.1 Operational Steps....................................................................................... 98

7. Appendix ...................................................................................................99

7.1 Operating Noise of Indoor Units ................................................................. 99

7.2 Allowable Piping Length........................................................................... 101

7.3 Refrigerant branch kit selection................................................................ 104

7.4 Pipe size selection.................................................................................... 106

7.5 How to calculate the additional refrigerant to be charged ........................ 107

7.6 REFNET Pipe Connections for VRV R410A Series ................................. 109

7.7 VRV Inspection Sheet .............................................................................. 114

7.8 Piping System Diagrams .......................................................................... 118

7.9 Wiring Diagrams....................................................................................... 121

7.10 Bad Examples and Good Examples in Installation................................... 123

Part 2 Installation Manual REYQ96MTJU.................................... 131

1. Introduction .............................................................................................136

1.1 Combination ............................................................................................. 136

1.2 Standard Operation Limit ......................................................................... 136

1.3 Standard Supplied Accessories ............................................................... 137

1.4 Option Accessory ..................................................................................... 138

Si39-406

ii Table of Contents

1.5 Technical Specifications (1) ..................................................................... 138

1.6 Electrical Specifications (1) ...................................................................... 139

2. Main Components ...................................................................................140

3. Selection of Location...............................................................................141

4. Inspecting and Handling the Unit ............................................................143

5. Unpacking and Placing the Unit ..............................................................144

6. Refrigerant Piping ...................................................................................146

6.1 Selection of Piping Material...................................................................... 146

6.2 Connecting the Refrigerant Piping ........................................................... 146

6.3 Example of Connection ............................................................................ 151

6.4 Leak Test and Vacuum Drying ................................................................. 153

6.5 Pipe Insulation.......................................................................................... 156

6.6 Additional Refrigerant Charge .................................................................. 156

7. Field Wiring .............................................................................................159

7.1 Optional Parts........................................................................................... 159

7.2 Power Circuit and Cable Requirements ................................................... 159

7.3 General..................................................................................................... 160

7.4 Examples.................................................................................................. 161

8. Before Operation.....................................................................................166

8.1 Checks Before Initial Start-up................................................................... 166

8.2 Test Run................................................................................................... 167

9. Caution for Refrigerant Leaks .................................................................169

Part 3 Installation Manual BS Unit .............................................. 171

1. Safety Considerations .............................................................................172

2. Before Installation ...................................................................................175

2.1 Caution Concerning New Refrigerant Series ........................................... 175

2.2 Precautions .............................................................................................. 175

2.3 Accessories .............................................................................................. 176

2.4 Combination ............................................................................................. 177

3. Selecting Installation Site ........................................................................178

4. Preparations Before Installation ..............................................................179

5. BS Unit Installation..................................................................................180

6. Refrigerant Piping Work ..........................................................................181

6.1 In Case of Connecting Only One Indoor Unit ........................................... 183

6.2 When Connecting Multiple Indoor Units ................................................... 183

6.3 Selection of Pipe Connection Size ........................................................... 183

6.4 Piping Connection .................................................................................... 184

7. Electric Wiring Work................................................................................185

7.1 General Instructions ................................................................................. 185

7.2 Example for the Whole System ................................................................ 185

7.3 Electrical Characteristics .......................................................................... 185

7.4 Specifications for Field Supplied Fuses and Wire .................................... 186

7.5 Gist of Field Line Connection ................................................................... 186

7.6 Initial Setting............................................................................................. 189

8. Test Operation ........................................................................................190

Si39-406

Table of Contents iii

Part 4 Operation Manual .............................................................. 191

1. Safety Considerations .............................................................................193

2. What to Do Before Operation..................................................................197

3. Remote Controller and Changeover Switch: Name and Function

of Each Switch and Display.....................................................................198

4. Operation Range.....................................................................................200

5. Operation Procedure...............................................................................201

5.1 Cooling, Heating, Automatic, and Fan Only Operation ............................ 201

5.2 Program Dry Operation ............................................................................ 203

5.3 Adjusting the Air Flow Direction ............................................................... 205

5.4 Programming Start and Stop of the System with Timer ........................... 206

5.5 Setting the Master Remote Controller ...................................................... 207

5.6 Precautions for Group Control System or Two Remote

Controller Control System ........................................................................ 208

6. Optimum Operation.................................................................................209

7. Following Symptoms are not Air Conditioner Troubles ...........................210

7.1 The System does not Operate ................................................................. 210

7.2 Cool/heat cannot be Changed Over......................................................... 210

7.3 Fan Operation is Possible, but Cooling and Heating do not Work ........... 210

7.4 The Fan Strength does not Correspond to the Setting............................. 210

7.5 The Fan Direction does not Correspond to the Setting ............................ 210

7.6 White Mist comes out of a Unit................................................................. 211

7.7 Noise of Air Conditioners.......................................................................... 211

7.8 Dust comes out of the Unit ....................................................................... 212

7.9 The Units can Give off Odours ................................................................. 212

7.10 The Outdoor Unit Fan does not Spin........................................................ 212

7.11 The Display Shows “88”............................................................................ 212

7.12 The Compressor in the Outdoor Unit does not Stop after

a Short Heating Operation........................................................................ 212

7.13 The Inside of an Outdoor Unit is Warm even when

the Unit has Stopped................................................................................ 212

8. Troubleshooting ......................................................................................213

Part 5 Precautions for new Refrigerant (R401A) ........................ 215

1. Precautions for New Refrigerant (R410A)...............................................216

1.1 Outline ...................................................................................................... 216

1.2 Refrigerant Cylinders................................................................................ 217

1.3 Service Tools............................................................................................ 218

Index ................................................................................................ i

Drawings & Flow Charts .................................................................. iii

Si39-406

iv Table of Contents

Si39-406

General Information 1

Part 1

Part 1Part 1

Part 1

General Information

General InformationGeneral Information

General Information

1. Product Outline ...........................................................................................2

1.1 Model Names of Indoor/Outdoor Units......................................................... 2

1.2 External Appearance.................................................................................... 3

1.3 Model Selection............................................................................................ 4

2. Points to Bear in Mind at the System Design..............................................5

2.1 Points Relating to the Performance of the Air Conditioning Units ................ 5

2.2 The Installation is of Vital Importance .......................................................... 7

2.3 Striking a Balance between System Installation and

General Construction Work (Comprehensive Flow Chart) ........................... 8

2.4 Points to Bear in Mind when Preparing the Contract Drawings ................... 9

3. Installation .................................................................................................13

3.1 Step by Step Installation Procedure ........................................................... 13