Hitachi YUTAKI S Series Technical Catalogue page 7

General Index
5.3.1 Hydraulic data ............................................................................................................................................... 75
5.3.2 Pump performance curves ............................................................................................................................ 76
6. General dimensions ................................................................................................. 79
6.1 Name of parts and Dimensional data .................................................................................................... 80
6.1.1 Split system - Outdoor unit ............................................................................................................................ 80
6.1.2 Split system - Indoor unit ............................................................................................................................... 81
6.1.2.1 YUTAKI S ......................................................................................................................................... 81
6.1.2.2 YUTAKI S COMBI ............................................................................................................................ 82
6.1.3 Monobloc system - YUTAKI M....................................................................................................................... 87
6.2 Service space ........................................................................................................................................ 88
6.2.1 Split system - Outdoor unit ............................................................................................................................ 88
6.2.2 Split system - Indoor unit ............................................................................................................................... 88
6.2.2.1 YUTAKI S ......................................................................................................................................... 88
6.2.2.2 YUTAKI S COMBI ............................................................................................................................ 89
6.2.3 Monobloc system - YUTAKI M....................................................................................................................... 90
7. Refrigerant cycle and hydraulic circuit .................................................................. 91
7.1 Refrigerant cycle and hydraulic circuit for Split system ......................................................................... 92
7.1.1 YUTAKI S ...................................................................................................................................................... 92
7.1.2 YUTAKI S COMBI.......................................................................................................................................... 93
7.2 Refrigerant cycle and hydraulic circuit for Monobloc system - YUTAKI M ............................................ 94
8. Refrigerant and water piping .................................................................................. 95
8.1 General notes before performing piping work ....................................................................................... 96
8.1.1 Piping work .................................................................................................................................................... 96
8.1.2 Suspension of refrigerant and water pipes .................................................................................................... 96
8.2 Refrigerant circuit .................................................................................................................................. 97
8.2.1 General notes R32 refrigerant ....................................................................................................................... 97
8.2.2 Refrigerant piping .......................................................................................................................................... 97
8.2.3 Refrigerant charge ......................................................................................................................................... 99
8.2.3.1 Refrigerant charge amount .............................................................................................................. 99
8.2.3.2 Refrigerant charge before shipment (W
8.3 Space heating and DHW ....................................................................................................................... 99
8.3.1 Additional hydraulic necessary elements for space heating .......................................................................... 99
8.3.2 Additional hydraulic necessary elements for DHW ...................................................................................... 100
8.3.3 Additional hydraulic optional elements (For DHW) ...................................................................................... 102
8.3.4 Additional hydraulic necessary elements for DHW (only for UK market) .................................................... 102
8.3.5 Requirements and recommendations for the hydraulic circuit .................................................................... 103
8.3.6 Water piping ................................................................................................................................................ 104
8.3.7 Water quality................................................................................................................................................ 105
9. Electrical and control settings .............................................................................. 107
9.1 General check ..................................................................................................................................... 108
VII TCGB0123 rev.2 - 10/2019
(kg)) ................................................................................. 99
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