Daikin REYQ168 Installation Manual Page 171
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SiUS39-506 Refrigerant Piping
Installation Manual REYQ96MTJU 165
6.4 Leak Test and Vacuum Drying
The units were checked for leaks by the manufacturer.
Confirm that the valves are firmly closed before pressure test or vacuuming.
To prevent entry of any impurities and ensure sufficient pressure resistance, always use the special
tools dedicated for R-410A.
Air tight test and vacuum drying
Air tight test: Make sure to use nitrogen gas.
(For the service port location, refer to the "Caution" label attached on the front panel [right] of
the outdoor unit.)
Pressurize the liquid, suction gas and discharge gas pipes to 551 psi
(do not pressurize more than 551 psi). If the pressure does not drop within 24 hours, the system
passes the test. If the pressure drops, check where the nitrogen leaks from.
Vacuum drying: Use a vacuum pump which can evacuate to -14.6 psi.
1. Evacuate the system from the liquid, suction gas and discharge gas pipes by using a
vacuum pump for more than 2 hours and bring the system to -14.6 psi. After keeping the
system under that condition for more than 1 hour, check if the vacuum gauge rises or not. If
it rises, the system may either contain moisture inside or have leaks.
2. Following should be executed if there is a possibility of moisture remaining inside the pipe (if
piping work is carried out during the raining season or over a long period of time rainwater
may enter the pipe during work).
After evacuating the system for 2 hours, pressurize the system to 7.25psi (vacuum break)
with nitrogen gas and evacuate the system again using the vacuum pump for 1 hour to -14.6
psi (vacuum drying). If the system cannot be evacuated to -14.6 psi within 2 hours, repeat
the operation of vacuum break and vacuum drying.
Then, after leaving the system in vacuum for 1 hour, confirm that the vacuum gauge does
not rise.
Note: Make sure to perform air tight test and vacuum drying using the service ports of the shutoff valve
shown in the table below.
Shutoff valve
operation
procedure
Introduction
Confirm the sizes of the shutoff valves connected to the system referring to the table below.
1
3
2
1. [Service precautions]
Label location
2. Electric parts box lid
3. [Caution]
Label location
One outdoor unit installed:
In case of REYQ96MTJU
Liquid line shutoff valve
Discharge gas line shutoff valve
Suction gas line shutoff valve
Multiple outdoor units installed Liquid line stop valve
Discharge gas line stop valve
Suction gas line stop valve
Oil-equalizing line stop valve
Q96 type
Liquid line shutoff valve φ3/8"
Suction gas line shutoff valve φ7/8"
Discharge gas line shutoff valve φ3/4"
- R-410A Heat Recovery 60Hz 1
- R-410A Series 3
- R-410A SeriesR-410A Series 3
- Table of Contents iii 5
- General Information 1 7
- 1. .Product Outline 8
- 1.2 External Appearance 9
- 1.3 Model Selection 10
- General Information 7 13
- 8 General Information 14
- Drawings 15
- 10 General Information 16
- General Information 11 17
- Example: System list 17
- 12 General Information 18
- 3. Installation 19
- Borne in Mind 20
- SiUS39-506 Installation 21
- General Information 15 21
- Installation SiUS39-506 22
- 16 General Information 22
- For installation 23
- 98 3/8" or more 23
- 13/16" 23
- 3 1/2" 24
- 1 1/4" 24
- Model A (in.) B (in.) 25
- FXNQ12MVJU 28 46 25
- FXNQ18 · 24MVJU 39 57 25
- 3.2.3 Refrigerant Pipe Work 26
- General Information 21 27
- 22 General Information 28
- General Information 23 29
- Example: R-410A REYQ-M Series 31
- 26 General Information 32
- 12mm×72mm 33
- 1.0×0.5mm Each 33
- Thickness 33
- Flaring Procedure 34
- General Information 29 35
- 30 General Information 36
- General Information 31 37
- Operational steps 37
- Important points 37
- 3.2.5 Air Tight Test 38
- General Information 33 39
- 3.2.6 Vacuum Drying 40
- Key points 41
- 36 General Information 42
- –14.7psi 44
- –14.6psi 44
- (–755mmHg) 44
- General Information 39 45
- 40 General Information 46
- General Information 41 47
- 42 General Information 48
- Check for water 49
- 44 General Information 50
- General Information 45 51
- 46 General Information 52
- General Information 47 53
- Ceiling Mounted 54
- Built-in Type 54
- (FXSQ-M) 54
- Drain Piping 54
- 3P086156-3A-9 55
- 1 15/16" 56
- General Information 51 57
- 5/32 or less 57
- 3.2.10 Electrical Work 61
- General Information 57 63
- 3.2.11 Duct Work (Indoor) 64
- 3.2.12 Selection of Location 64
- General Information 59 65
- 60 General Information 66
- General Information 61 67
- REYQ96MTJU 68
- 4-φ19/32" dia. holes 68
- 28 7/16-29" 68
- General Information 63 69
- 3P124617 70
- 4P124614 70
- 4. Test Operation 71
- 4.1.3 Check Operation 72
- MODE SET RETURN TEST RESET 75
- 4.4 Field Setting 76
- General Information 71 77
- Setting 79
- 74 General Information 80
- 78 General Information 84
- General Information 79 85
- Group No. Setting 86
- General Information 81 87
- Setting by dip switches 89
- 77877778 90
- 77777779 90
- 77777777 90
- General Information 87 93
- 88 General Information 94
- (1 cycle before) 95
- (2 cycle before) 95
- 9 797997 96
- 977 7979 96
- 977 7997 96
- General Information 91 97
- 92 General Information 98
- General Information 93 99
- Test Operation SiUS39-506 100
- 94 General Information 100
- SiUS39-506 Test Operation 101
- General Information 95 101
- 96 General Information 102
- 98 General Information 104
- General Information 99 105
- 8:ON 9:BLINK 3:OFF) 106
- CHECK OPERATION FUNCTION 106
- 5.1.1 Introduction 107
- 1. opening between rooms 108
- 2. partition 108
- 6. Hand Over to Customer 109
- 7. Appendix 110
- SiUS39-506 Appendix 111
- General Information 105 111
- 7.2 Allowable Piping Length 112
- General Information 107 113
- General Information 109 115
- Branch with refnet header 116
- General Information 111 117
- 7.4 Pipe size selection 120
- Appendix SiUS39-506 122
- 116 General Information 122
- 3P124659A 123
- KHRP26M22T 124
- KHRP26M33T 124
- KHRP25M22T 125
- KHRP25M33T 125
- KHRP25M72TU 125
- KHRP26M22H 126
- KHRP26M33H 126
- KHRP26M72H 126
- General Information 121 127
- 122 General Information 128
- 7.7 VRV Inspection Sheet 129
- Before turning on the power 130
- System name 130
- Inspection item 131
- Inspection method 131
- During operation 133
- 7.8 Piping System Diagrams 135
- 7.8.2 Indoor Unit 136
- 7.8.3 BS Unit 137
- 7.9 Wiring Diagrams 138
- 7.9.2 Field Wiring 139
- REYQ192MTJU 140
- General Information 135 141
- 136 General Information 142
- General Information 137 143
- Indoor unit 144
- General Information 139 145
- 140 General Information 146
- (Inverter K Series) 147
- 7.10.9 Example 9: “88 148
- SiUS39-506 149
- 1. Introduction 154
- SiUS39-506 Introduction 155
- 1.4 Option Accessory 156
- 2. Main Components 158
- 3. Selection of Location 159
- 2. Center position of unit 162
- 2. Suction gas side piping 163
- 3. Liquid side piping 163
- 4. Discharge gas side piping 163
- 6. Refrigerant Piping 164
- SiUS39-506 Refrigerant Piping 165
- Refrigerant Piping SiUS39-506 166
- 6.3 Example of Connection 169
- 1. [Service precautions] 171
- Label location 171
- 2. Electric parts box lid 171
- 3. [Caution] 171
- 1. Service port 172
- 3. Hexagon hole 172
- 4. Shaft 172
- R=0.016-0.031 173
- 6.5 Pipe Insulation 174
- 7. Field Wiring 177
- 7.3 General 178
- L1 L2 L3 179
- Round pressure terminal 181
- Cup washer 181
- Cut out section 181
- Knockout hole 183
- Left side Right side 183
- 8. Before Operation 185
- 8.2 Test Run 186
- 1. Electric box lid 187
- 2. Service lid 187
- 1. Safety Considerations 192
- 2. Before Installation 195
- 2.3 Accessories 196
- 2.4 Combination 197
- Sight opening 198
- 5. BS Unit Installation 200
- 6. Refrigerant Piping Work 201
- R 0.016~0.031 202
- 6.4 Piping Connection 204
- 7. Electric Wiring Work 205
- F1 F2 F1 F2 F1 F2 206
- F1 F2F1 F2 206
- Grounding wire 1.12~37 207
- Final BS unit 208
- 7.6 Initial Setting 209
- 8. Test Operation 210
- Operation Manual 205 211
- [Applicable model] 212
- REYQ96MTJU REYQ192MTJU 212
- 208 Operation Manual 214
- Operation Manual 209 215
- 210 Operation Manual 216
- 212 Operation Manual 218
- Operation Manual 213 219
- 4. Operation Range 220
- 5. Operation Procedure 221
- 216 Operation Manual 222
- 5.2 Program Dry Operation 223
- 218 Operation Manual 224
- Wall Mounted 225
- Multi-flow 225
- Ceiling Suspended 225
- 220 Operation Manual 226
- Operation Manual 221 227
- Controller Control System 228
- 6. Optimum Operation 229
- Troubles 230
- Operation Manual 225 231
- 226 Operation Manual 232
- 8. Troubleshooting 233
- Use curtains or blinds 234
- 1.1 Outline 236
- 1.2 Service Tools 237
- Flare gauge 238
- Dimension A 238
- For class-1: R-407C 238
- For class-2: R-410A 238
- (Hose with ball valve) 241
- IndexIndex 243
- Drawings & Flow Charts 245
- Drawings & Flow Charts v 247
- Printed in U.S.A. 10/2005 AK 248
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