Daikin REYQ168 Installation Manual Page 202
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- TROUBLESHOOTING
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Refrigerant Piping Work SiUS39-506
196 Installation Manual BS Unit
For locally procured insulation, be sure to insulate all the way to the pipe connections inside the
machine.
Exposed piping may cause condensation to form or burns on contact.
Use the following material specification for refrigerant piping:
(1) construction material: Phosphoric acid deoxidized seamless copper for refrigerant.
(2) size: Determine the proper size referring to chapter “SELECTION OF PIPE CONNECTION
SIZE”
(3) The wall thickness of the refrigerant piping should comply with relevant local and national
regulations.
Ventilate if refrigerant gas leaks while performing work.
Finally make sure there is no refrigerant gas leak. A toxic gas may be released by the refrigerant
gas leaking indoor and being exposed to flames from an area heater, cooking stove, etc.
Table 1
Table 2
Pipe gauge
(in)
Tightening torque (ft-lbf)
Flare dimension
A (in)
Flare shape (in)
1/4’’ 10.5 – 12.7 0.343 – 0.358
3/8’’ 24.1 – 29.4 0.504 – 0.520
1/2’’ 36.5 – 44.5 0.638 – 0.654
5/8’’ 45.6 – 55.6 0.760 – 0.776
Pipe size
(in)
Further tightening angle (degree) Recommended arm length of tool (in)
1/4’’ 60 to 90 Approx. 5 7/8’’
3/8’’ 60 to 90 Approx. 7 7/8’’
1/2’’ 30 to 60 Approx. 9 13/16’’
5/8’’ 30 to 60 Approx. 11 13/16’’
Spanner
Piping union
Torque wrench
Flare nut
Fig. 2
Coat here with ether oil or ester oil.
Fig. 3
Insulation
(locally procured)
Wrap around top
of flare nut
Clamp 2)
Insulation for fitting
(Attached) 3)-1
Insulatoin for fitting
(Attached) 3)-3
(For liquid pipe)
(For gas pipe)
Gas piping
Liquid piping
Fig. 4
Part to be
brazed
Taping
Pressure-reducing valve
Nitrogen
Valve
Refrigerant piping
Nitrogen
Fig. 5
45
0
2
0
90
0
2
0
R 0.016~0.031
A
- 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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