Mitsubishi Electric CITY MULTI PURY-HP-TNU-A1 Manuel D'installation page 3

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 ·········································································································8
3. Combination of outdoor units ························································································8
4. Specifications ··············································································································9
5. Package contents ······································································································· 10
6. Transporting the unit ··································································································· 11
7. Installation location ···································································································· 12
7-1. Single unit installation .......................................................................................................... 12
7-2. Multiple unit installation ........................................................................................................ 13
8. Foundation work ········································································································ 15
9. Refrigerant piping work ······························································································· 17
9-1. Restrictions .......................................................................................................................... 17
9-2. Pipe selection....................................................................................................................... 19
9-3. Twinning kit selection ........................................................................................................... 19
9-4. Pipe connection example ..................................................................................................... 19
9-5. Piping connections and valve operations ............................................................................ 21
9-6. Air-tightness test .................................................................................................................. 24
9-7. Thermal insulation for pipes ................................................................................................. 24
9-8. Evacuation of the system ..................................................................................................... 26
9-9. Additional refrigerant charge ................................................................................................ 27
10. Electrical work ·········································································································· 31
10-1. Before electrical work......................................................................................................... 31
10-2. Power cables and device capacity ..................................................................................... 31
10-3. Control cable specifications ............................................................................................... 32
10-4. System configuration ......................................................................................................... 33
10-5. Wiring connections in the control box ................................................................................ 35
10-6. Address setting .................................................................................................................. 39
11. Test run ···················································································································· 40
11-1. Before a test run ................................................................................................................. 40
11-2. Function setting .................................................................................................................. 40
11-3. Operation characteristics in relation to the refrigerant charge ........................................... 41
11-4. Operation check ................................................................................................................. 41
12. Inspection and maintenance ······················································································· 42
12-1. Guideline for preventive maintenance ............................................................................... 42
12-2. Recommended parts inspection interval ............................................................................ 43
13. Rating plate information ···························································································· 44
WT10508X02
GB-1