Hitachi RAS-5FSNY2E [7/148] Refrigerant piping range 04

Hitachi RAS-5FSVN2E [7/148] Electrical wiring 119
VII
TCGB0068 rev.1 - 08/2012
General Index
9.2. Refrigerant piping range ......................................................................................................................104
9.2.1. Refrigerant piping length ......................................................................................................................... 104
9.2.2. Refrigerant piping size ............................................................................................................................. 107
9.3. Distribution method .............................................................................................................................108
9.3.1. Header branch piping system .................................................................................................................. 108
9.3.2. Line branch piping system ....................................................................................................................... 109
9.3.3. Combination branch piping system ..........................................................................................................111
9.4. Piping materials and connection ......................................................................................................... 112
9.4.1. Copper pipes and sizes ............................................................................................................................112
9.4.2. Pipe connection ........................................................................................................................................113
9.4.3. Insulation ..................................................................................................................................................113
9.5. Refrigerant charge amount.................................................................................................................. 114
9.5.1. Refrigerant charge before shipment (W
0
(kg)) ..........................................................................................114
9.5.2. Additional refrigerant charge calculation method .....................................................................................114
9.5.3. Additional refrigerant charge calculation example ...................................................................................115
9.6. Caution in case of refrigerant leakage................................................................................................. 116
9.6.1. Maximum permitted concentration of hydrouorocarbon (HFC) ...............................................................116
9.6.2. Calculation of refrigerant concentration ....................................................................................................116
9.6.3. Countermeasure for refrigerant leakage ...................................................................................................116
10. Electrical wiring ..................................................................................................... 119
10.1. General information .............................................................................................................................120
10.1.1. General notes .......................................................................................................................................... 120
10.1.2. General verications ................................................................................................................................ 120
10.2. Setting of DIP switches and RSW switches ........................................................................................122
10.3. Common wiring ...................................................................................................................................124
10.3.1. Electrical wiring between outdoor and indoor unit ................................................................................... 124
10.3.2. Wiring size ............................................................................................................................................... 125
10.4. H-LINK II system .................................................................................................................................126
10.4.1. Application ............................................................................................................................................... 126
10.4.2. Features .................................................................................................................................................. 126
10.4.3. Specications .......................................................................................................................................... 126
10.4.4. DIP switch setting for multiple H-LINK system ........................................................................................ 127
10.4.5. Examples of the system of connection between H-LINK and H-LINK II units ......................................... 128
10.4.6. Examples of H-LINK II system ................................................................................................................. 129
11. Optional functions ................................................................................................. 131
11.1. RAS-(4-6)FS(V)N(Y)2E .......................................................................................................................132
11.2. For operation with CS-NET WEB ........................................................................................................133
12. Troubleshooting ..................................................................................................... 135
12.1. On-screen displays during abnormal operation ..................................................................................136
12.2. Alarm codes ........................................................................................................................................137

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