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7. REFRIGERANT R410A ............................................................................ 39
7-1. Safety During Installation/Servicing ............................................................... 39
7-2. Refrigerant Piping Installation ....................................................................... 39
7-3. Tools .................................................................................................................. 43
7-4. Recharging of Refrigerant................................................................................ 43
7-5. Brazing of Pipes................................................................................................ 44
7-6. Instructions for Re-use Piping of R22 or R407C ............................................ 46
8. INDOOR CONTROL CIRCUIT (SLIM DUCT TYPE) ................................. 49
8-1. Indoor Controller Block Diagram .................................................................... 49
8-2. Indoor Controls (Slim Duct Type) .................................................................... 52
8-3. Optional Connector Specifications of Indoor P.C. Board .............................. 61
8-4. Indoor Print Circuit Board ................................................................................ 62
9. OUTDOOR CONTROL CIRCUIT .............................................................. 63
9-1. Outdoor Controls .............................................................................................. 63
9-2. Outdoor Print Circuit Board ............................................................................. 74
10. TROUBLESHOOTING .............................................................................. 76
10-1. Summary of Troubleshooting .......................................................................... 76
10-2. Troubleshooting ................................................................................................ 78
11. REPLACEMENT OF SERVICE P.C. BOARD ......................................... 113
11-1. Indoort Unit (Slim Duct Type)......................................................................... 113
12. SETUP AT LOCAL SITE AND OTHERS ................................................ 118
12-1. Indoor Unit (Slim Duct Type) .......................................................................... 118
12-2. Setup at Local Site / Others ........................................................................... 125
12-3. How to Set up Central Control Address Number ......................................... 127
12-4. Outdoor Unit.................................................................................................... 132
13. ADDRESS SETUP.................................................................................. 140
13-1. Address Setup Procedure .............................................................................. 140
13-2. Address Setup & Group Control.................................................................... 141
13-3. Remote Controller Wiring............................................................................... 144
13-4. Address Setup (Manual setting from remote controller) ............................. 145
13-5. Confirmation of Indoor Unit No. Position ..................................................... 146
14. DETACHMENTS ..................................................................................... 148
14-1. Indoor Unit...................................................................................................... 148
14-2. Outdoor Unit.................................................................................................... 153
15. EXPLODED VIEWS AND PARTS LIST .................................................. 170
15-1. Indoor Unit....................................................................................................... 170
15-2. Outdoor Unit.................................................................................................... 175