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CONTENTS
Precaution for Safety......................................................................... 7
1. SPECIFICATIONS........................................................................ 19
1-1. Outdoor Unit ....................................................................................................................... 19
1-2. Operation Characteristic Curve ........................................................................................ 20
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS).......................... 21
2-1. Outdoor Unit ....................................................................................................................... 21
3. OUTDOOR UNIT REFRIGERATING CYCLE DIAGRAM ............ 25
4. WIRING DIAGRAM ...................................................................... 27
4-1. Outdoor Unit ....................................................................................................................... 27
5. SPECIFICATIONS OF ELECTRICAL PARTS ............................. 28
5-1. Outdoor Unit ....................................................................................................................... 28
6. REFRIGERANT R32 .................................................................... 29
6-1. Safety During Installation/Servicing ................................................................................ 29
6-2. Refrigerant Piping Installation .......................................................................................... 29
6-2-1. Piping Materials and Joints Used ...................................................................................... 29
6-2-2. Processing of Piping Materials .......................................................................................... 30
6-3. Tools .................................................................................................................................... 33
6-3-1. Required Tools ..................................................................................................................... 33
6-4. Recharging of Refrigerant ................................................................................................. 33
6-5. Brazing of Pipes ................................................................................................................. 34
6-5-1. Materials for Brazing ........................................................................................................... 34
6-5-2. Flux ....................................................................................................................................... 34
6-5-3. Brazing .................................................................................................................................. 35
6-6. Instructions for Re-use Piping of R22 or R407C ............................................................. 36
6-6-1. Basic Conditions Needed to Reuse the Existing Pipe ..................................................... 36
6-6-2. Restricted Items to Use the Existing Pipes....................................................................... 36
6-6-3. Branching Pipe for Simultaneous Operation System ...................................................... 36
6-6-4. Curing of Pipes .................................................................................................................... 36
6-6-5. Final Installation Checks..................................................................................................... 37
6-6-6. Handling of Existing Pipe ................................................................................................... 38
6-6-7. Recovering Refrigerant ....................................................................................................... 38
6-7. Charging additional refrigerant ........................................................................................ 38
6-7-1. [Assumed gas leak] ............................................................................................................. 38
6-7-2. [Limiting the additional charge] ......................................................................................... 38
6-7-3. [Cautions on charging additional refrigerant] .................................................................. 38
6-8. General safety precautions for using R32 refrigerant .................................................... 39
6-8-1. Recovery............................................................................................................................... 39
6-8-2. Decommissioning ................................................................................................................ 39
6-8-3. Labelling ............................................................................................................................... 39
7. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS . 40
7-1. Outdoor Unit Control ......................................................................................................... 40
7-1-1. Print Circuit Board, MCC-1698 (Compressor IPDU) ......................................................... 40
7-1-2. Print Circuit Board, MCC-1597 (Fan Motor IPDU) ............................................................. 41
7-1-3. Print Circuit Board, MCC-1675 (Interface (CDB)) .............................................................. 42
7-1-4. Print Circuit Board, MCC-1600 (Noise Filter) .................................................................... 43
7-2. Outline of Main Controls ................................................................................................... 44
