CONTENTS
1. Safety precautions ················································································ 2
1-1. General precautions...............................................................................................................2
1-2. Precautions for transporting the unit ......................................................................................3
1-3. Precautions for unit installation ..............................................................................................4
1-4. Precautions for piping work....................................................................................................4
1-5. Precautions for electrical wiring .............................................................................................5
1-6. Precautions for relocating or repairing the unit ......................................................................5
1-7. Additional precautions ............................................................................................................6
2. About the product ················································································· 8
3. Combination of outdoor units ································································· 9
4. Specifications ······················································································10
5. Package contents ·················································································12
6. Transporting the unit ············································································13
7. Installation location ··············································································14
7-1. Single unit installation ..........................................................................................................14
7-2. Multiple unit installation ........................................................................................................15
8. Foundation work ··················································································17
9. Refrigerant piping work ········································································19
9-1. Restrictions ..........................................................................................................................19
9-2. Pipe selection.......................................................................................................................22
9-3. Twinning kit selection ........................................................................................................... 22
9-4. Pipe connection example .....................................................................................................23
9-5. Piping connections and valve operations ............................................................................28
9-6. Air-tightness test ..................................................................................................................31
9-7. Thermal insulation for pipes .................................................................................................32
9-8. Evacuation of the system .....................................................................................................34
9-9. Additional refrigerant charge ................................................................................................35
10. Electrical work ···················································································41
10-1. Before electrical work.........................................................................................................41
10-2. Power cables and device capacity .....................................................................................41
10-3. Control cable specifications ...............................................................................................44
10-4. System configuration ......................................................................................................... 44
10-5. Wiring connections in the control box ................................................................................48
10-6. Address setting ..................................................................................................................53
11. Test run ····························································································· 54
11-1. Before a test run ................................................................................................................. 54
11-2. Function setting ..................................................................................................................55
11-3. Operation characteristics in relation to the refrigerant charge ...........................................56
11-4. Operation check ................................................................................................................. 56
12. Inspection and maintenance ································································ 57
13. Rating plate information ······································································58
GB
GB-1
WT08432X01