Mitsubishi Electric CITY MULTI PEFY-P22VMS-E-S Data Book page 280

CITY MULTI
SYSTEM DESIGN S SERIES
1. Electrical work.................................................................................................................................................. 4 - 4
1-1.General cautions ....................................................................................................................................... 4 - 4
1-2.Power supply for Indoor unit and Outdoor unit .......................................................................................... 4 - 5
1-3.Power cable specifications ........................................................................................................................ 4 - 7
1-4.Power supply examples............................................................................................................................. 4 - 8
2. M-NET control.................................................................................................................................................. 4 - 9
2-1.Transmission cable length limitation.......................................................................................................... 4 - 9
2-2.Transmission cable specifications ............................................................................................................. 4 - 10
2-3.System configuration restrictions............................................................................................................... 4 - 11
2-4.Address setting.......................................................................................................................................... 4 - 14
3. Piping Design................................................................................................................................................... 4 - 20
3-1.R410A Piping material............................................................................................................................... 4 - 20
3-2.Piping Design ............................................................................................................................................ 4 - 21
3-3.Refrigerant charging calculation ................................................................................................................ 4 - 23
4. Outdoor Installation.......................................................................................................................................... 4 - 25
4-1.Requirement on installation site ................................................................................................................ 4 - 25
4-2.Spacing...................................................................................................................................................... 4 - 27
4-3.Piping direction .......................................................................................................................................... 4 - 28
5. Installation information..................................................................................................................................... 4 - 29
5-1.General precautions .................................................................................................................................. 4 - 29
5-2.Precautions for Indoor unit ........................................................................................................................ 4 - 30
5-3.Precautions for Fresh air intake type indoor unit ....................................................................................... 4 - 31
5-4.Precautions for Outdoor unit/Heat source unit .......................................................................................... 4 - 31
5-5.Precautions for Control-related items ........................................................................................................ 4 - 32
6. Caution for refrigerant leakage ........................................................................................................................ 4 - 33
6-1.Refrigerant property................................................................................................................................... 4 - 33
6-2.Confirm the Critical concentration and take countermeasure.................................................................... 4 - 33
SYSTEM DESIGN S SERIES
C7-R Rev.
4 - 3