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7. REFRIGERANT R410A ............................................................................ 33
7-1. Safety During Installation/Servicing ............................................................... 33
7-2. Refrigerant Piping Installation....................................................................... 33
7-3. Tools .................................................................................................................. 37
7-4. Recharging of Refrigerant................................................................................ 37
7-5. Brazing of Pipes................................................................................................ 38
7-6. Instructions for Re-use Piping of R22 or R407C ............................................ 40
8. INDOOR CONTROL CIRCUIT (SLIM DUCT TYPE) ................................. 43
8-1. Indoor Controller Block Diagram..................................................................... 43
8-2. Indoor Controls (Slim Duct Type) .................................................................... 46
8-3. Optional Connector Specifications of Indoor P.C. Board .............................. 55
8-4. Indoor Print Circuit Board................................................................................ 56
9. OUTDOOR CONTROL CIRCUIT .............................................................. 57
9-1. Outdoor Controls .............................................................................................. 57
9-2. Outdoor Print Circuit Board ............................................................................. 68
10. TROUBLESHOOTING .............................................................................. 70
10-1. Summary of Troubleshooting........................................................................... 70
10-2. Troubleshooting ................................................................................................ 72
11. REPLACEMENT OF SERVICE P.C. BOARD.......................................... 107
11-1. Indoort Unit (Slim Duct Type)......................................................................... 107
12. SETUP AT LOCAL SITE AND OTHERS ................................................ 112
12-1. Indoor Unit (Slim Duct Type) .......................................................................... 112
12-2. Setup at Local Site / Others ........................................................................... 119
12-3. How to Set up Central Control Address Number ......................................... 121
12-4. Outdoor Unit.................................................................................................... 126
13. ADDRESS SETUP.................................................................................. 134
13-1. Address Setup Procedure.............................................................................. 134
13-2. Address Setup & Group Control.................................................................... 135
13-3. Remote Controller Wiring............................................................................... 138
13-4. Address Setup (Manual setting from remote controller)............................. 139
13-5. Confirmation of Indoor Unit No. Position ..................................................... 140
14. DETACHMENTS ..................................................................................... 142
14-1. Indoor Unit...................................................................................................... 142
14-2. Outdoor Unit.................................................................................................... 147
15. EXPLODED VIEWS AND PARTS LIST .................................................. 164
15-1. Indoor Unit....................................................................................................... 164
15-2. Outdoor Unit.................................................................................................... 167