Hitachi RAS-(3-6)HVRNM2E Service Manual page 6

Contens
3.2.1 Piping Materials ............................................................................................................................................. 52
3.2.2 Three principles on refrigerant piping work ................................................................................................... 54
3.2.3 Suspension of refrigerant piping .................................................................................................................... 54
3.2.4 Brazing work .................................................................................................................................................. 55
3.2.5 Refrigerant charge ......................................................................................................................................... 56
3.2.6 Caution of the pressure by check joint .......................................................................................................... 56
3.2.7 Refrigerant charge quantity ........................................................................................................................... 57
3.2.8 Pump down refrigerant .................................................................................................................................. 59
3.3 Outdoor Units IVX Series.......................................................................................................................... 60
3.3.1 Piping connection .......................................................................................................................................... 60
3.3.2 Refrigerant piping length ............................................................................................................................... 65
3.3.3 Refrigerant piping selection ........................................................................................................................... 66
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 ........................................................................................................................... 77
3.4.4 Twin and triple system installation ................................................................................................................. 78
3.4.5 Connecting flare adapter (only for RAS-(2/2.5)HVRN2) ................................................................................ 79
3.4.6 Drain discharging boss .................................................................................................................................. 80
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 II System ........................................................................................................................................... 99
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
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SMGB0064 rev.0 - 08/2011