Hitachi YUTAKI S80 Series - Page 8

TCGB0075 rev.0 - 11/2012
9.3.2 Water piping .................................................................................................................................................110
9.3.3 Water quality.................................................................................................................................................112
10. Electrical wiring ..................................................................................................... 113
10.1 Unit electrical wiring and connection .................................................................................................... 114
10.1.1 General check ............................................................................................................................................114
10.2 Electrical wiring connection .................................................................................................................. 116
10.2.1 Outdoor unit terminal board connections ...................................................................................................116
10.2.2 Indoor unit terminal board connections ......................................................................................................117
10.3 Printed circuit board (PCB) ................................................................................................................... 118
10.3.1 Outdoor unit ................................................................................................................................................118
10.3.2 Indoor unit ..................................................................................................................................................119
10.4 Setting of DIP switches and RSW switches ..........................................................................................121
10.4.1 Outdoor unit ............................................................................................................................................... 121
10.4.2 Indoor unit ................................................................................................................................................. 124
10.5 Common wiring .....................................................................................................................................130
10.5.1 Electrical wiring between indoor and outdoor unit of the air to water heat pump system .......................... 130
10.5.2 Electrical wiring between DHW tank and indoor unit ................................................................................. 133
11. Installation configuration ...................................................................................... 135
11.1 System congurations ...........................................................................................................................136
11.2 Installation congurations .....................................................................................................................138
11.2.1 Main congurations ................................................................................................................................... 139
11.2.2 Additional combinations ............................................................................................................................. 142
12. Optional functions .................................................................................................147
12.1 Indoor unit .............................................................................................................................................148
12.1.1 Optional functions ...................................................................................................................................... 148
12.1.2 Optional external output signals (by 7-segment display) ........................................................................... 149
12.2 Outdoor unit ..........................................................................................................................................149
12.2.1 Optional functions ...................................................................................................................................... 149
13. Troubleshooting .................................................................................................... 151
13.1 Troubleshooting procedure by alarm code ...........................................................................................152
13.1.1 Alarm display ............................................................................................................................................. 152
13.1.2 Alarm codes ............................................................................................................................................... 153