Hitachi RAS-3HVRNS - Page 6

3.3.4 Twin and triple system installation.............................................................................................. 67
3.3.5 Drain discharging boss............................................................................................................... 68
3.4 Outdoor Units ES Series............................................................................................................ 70
3.4.1 Piping connection........................................................................................................................ 70
3.4.2 Refrigerant piping length............................................................................................................. 75
3.4.3 Refrigerant piping selection........................................................................................................ 76
3.4.4 Twin and triple system installation.............................................................................................. 78
3.4.5 Connecting flare adapter (only for RAS-(2/2.5)HVRN1(E))........................................................ 79
3.4.6 Drain discharging boss............................................................................................................... 79
4 Electrical Wiring............................................................................................... 81
4.1 General check............................................................................................................................ 82
4.2 Electrical wiring for the outdoor unit IVX Series......................................................................... 83
4.2.1 Electrical wiring connection for the outdoor unit......................................................................... 83
4.2.2 Setting the DIP switches for the outdoor unit.............................................................................. 84
4.3 Electrical wiring for the outdoor unit ES Series.......................................................................... 88
4.3.1 Electrical wiring connection for the outdoor unit......................................................................... 88
4.3.2 Setting the DIP switches for the outdoor unit.............................................................................. 89
4.4 Electrical wiring between indoor unit and outdoor unit............................................................... 93
4.5 Wire sizes................................................................................................................................... 95
4.5.1 Wire sizes for IVX Series............................................................................................................ 95
4.5.2 Wire sizes for ES Series............................................................................................................. 97
4.5.3 H-LINK System........................................................................................................................... 98
4.6 Electrical wiring diagrams........................................................................................................... 108
4.6.1 Electrical wiring diagrams for IVX Series.................................................................................... 108
4.6.2 Electrical wiring diagrams for ES Series..................................................................................... 112
5 Control System................................................................................................ 117
5.1 Device control system................................................................................................................ 118
5.1.1 Device control system for IVX Series.......................................................................................... 118
5.1.2 Device control system for ES Series........................................................................................... 120
5.2 Outdoor units PCB..................................................................................................................... 122
5.2.1 Outdoor units PCB for IVX Series............................................................................................... 122
5.2.2 Outdoor units PCB for ES Series................................................................................................ 123
5.3 Protection and safety control...................................................................................................... 126
5.3.1 Protection and safety control for IVX Series............................................................................... 126
5.3.2 Protection and safety control for ES Series................................................................................ 127
5.4 Standard operation sequence.................................................................................................... 128
5.4.1 Standard operation sequence for IVX Series.............................................................................. 128
5.4.2 Standard operation sequence for ES Series............................................................................... 135
5.5 Standard control functions.......................................................................................................... 142
5.5.1 Standard control functions for IVX Series................................................................................... 142
5.5.2 Standard control functions for ES Series.................................................................................... 151
6 Optional functions........................................................................................... 161
6.1 Outdoor units IVX and ES series................................................................................................ 162
6.1.1 Available ports............................................................................................................................ 162
6.1.2 Configuration............................................................................................................................... 163
6.1.3 Description of optional input signals........................................................................................... 165
Index
iv
SMGB0060 rev. 1- 12/2010