CONTENTS
1. Safety precautions ········································································································2
1-1. General precautions............................................................................................................... 2
1-2. Precautions for transporting the unit ...................................................................................... 3
1-3. Precautions for unit installation .............................................................................................. 3
1-4. Precautions for piping work.................................................................................................... 4
1-5. Precautions for electrical wiring ............................................................................................. 4
1-6. Precautions for relocating or repairing the unit ...................................................................... 5
1-7. Additional precautions ............................................................................................................ 5
2. About the product ·········································································································7
3. Combination of outdoor units ························································································7
4. Specifications ··············································································································8
5. Package contents ·········································································································8
6. Transporting the unit ·····································································································9
7. Installation location ···································································································· 10
7-1. Single unit installation .......................................................................................................... 10
7-2. Multiple unit installation ........................................................................................................ 11
8. Foundation work ········································································································ 12
9. Refrigerant piping work ······························································································· 13
9-1. Restrictions .......................................................................................................................... 13
9-2. Pipe selection....................................................................................................................... 14
9-3. Twinning kit selection ........................................................................................................... 14
9-4. Pipe connection example ..................................................................................................... 15
9-5. Piping connections and valve operations ............................................................................ 17
9-6. Air-tightness test .................................................................................................................. 21
9-7. Thermal insulation for pipes ................................................................................................. 21
9-8. Evacuation of the system ..................................................................................................... 23
9-9. Additional refrigerant charge ................................................................................................ 24
10. Electrical work ·········································································································· 28
10-1. Before electrical work......................................................................................................... 28
10-2. Power cables and device capacity ..................................................................................... 28
10-3. Control cable specifications ............................................................................................... 29
10-4. System configuration ......................................................................................................... 30
10-5. Wiring connections in the control box ................................................................................ 32
10-6. Address setting .................................................................................................................. 34
11. Test run ···················································································································· 35
11-1. Before a test run ................................................................................................................. 35
11-2. Function setting .................................................................................................................. 35
11-3. Operation characteristics in relation to the refrigerant charge ........................................... 36
11-4. Operation check ................................................................................................................. 36
12. Inspection and maintenance ······················································································· 36
13. Rating plate information ···························································································· 37
GB
GB-1
WT07828X01
