CONTENTS
1. Safety precautions ················································································ 2
1-1. General precautions...............................................................................................................2
1-2. Precautions for transporting the unit ......................................................................................4
1-3. Precautions for unit installation ..............................................................................................4
1-4. Precautions for piping work....................................................................................................5
1-5. Precautions for electrical wiring .............................................................................................6
1-6. Precautions for relocating or repairing the unit ......................................................................7
1-7. Additional precautions ............................................................................................................7
2. About the product ················································································10
3. Combination of outdoor units ································································11
4. Specifications ······················································································12
5. Package contents ·················································································13
6. Transporting the unit ············································································14
7. Installation location ··············································································15
7-1. Single unit installation ..........................................................................................................17
7-2. Multiple unit installation ........................................................................................................18
8. Foundation work ··················································································20
9. Refrigerant piping work ········································································22
9-1. Restrictions ..........................................................................................................................22
9-2. Pipe selection.......................................................................................................................23
9-3. Twinning kit selection ...........................................................................................................23
9-4. Pipe connection example .....................................................................................................24
9-5. Piping connections and valve operations ............................................................................29
9-6. Air-tightness test ..................................................................................................................32
9-7. Thermal insulation for pipes .................................................................................................33
9-8. Evacuation of the system .....................................................................................................35
9-9. Additional refrigerant charge ................................................................................................36
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
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WT09050X01
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