CITY MULTI
DATA U5
SYSTEM DESIGN H SERIES
SYSTEM DESIGN H SERIES
1. Electrical work.................................................................................................................................................. 4 - 68
1-1.General cautions ....................................................................................................................................... 4 - 68
1-2.Power supply for Indoor unit and Outdoor unit .......................................................................................... 4 - 69
1-3.Power cable specifications ........................................................................................................................ 4 - 71
1-4.Power supply examples............................................................................................................................. 4 - 72
2. M-NET control.................................................................................................................................................. 4 - 74
2-1.Transmission cable length limitation.......................................................................................................... 4 - 74
2-2.Transmission cable specifications ............................................................................................................. 4 - 75
2-3.System configuration restrictions............................................................................................................... 4 - 76
2-4.Address setting.......................................................................................................................................... 4 - 79
3. Piping Design................................................................................................................................................... 4 - 90
3-1.R410A Piping material............................................................................................................................... 4 - 90
3-2.Piping Design ............................................................................................................................................ 4 - 91
3-3.Refrigerant charging calculation ................................................................................................................ 4 - 93
4. Outdoor Installation.......................................................................................................................................... 4 - 94
4-1.Requirement on installation site ................................................................................................................ 4 - 94
4-2.Spacing...................................................................................................................................................... 4 - 95
4-3.Piping direction .......................................................................................................................................... 4 - 97
4-4.Weather countermeasure .......................................................................................................................... 4 - 102
5. Caution for refrigerant leakage ........................................................................................................................ 4 - 103
5-1.Refrigerant property................................................................................................................................... 4 - 103
5-2.Confirm the Critical concentration and take countermeasure.................................................................... 4 - 103
4 - 67
