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CONTENTS
Precautions for Safety ................................................................................................ 7
New Refrigerant (R410A) .......................................................................................... 15
1. SPECIFICATIONS .................................................................................................. 17
1-1. 208/230V model .................................................................................................................. 17
1-2. 460V model ......................................................................................................................... 21
2. WIRING DIAGRAM ................................................................................................. 25
2-1. Outdoor Unit ....................................................................................................................... 25
2-2. FS unit (Flow Selector unit)............................................................................................... 29
3. PARTS RATING ...................................................................................................... 31
3-1. Outdoor Unit (208/230V model)......................................................................................... 31
3-2. Outdoor Unit (460V model)................................................................................................ 32
3-3. Outdoor Inverter (208/230V model) .................................................................................. 33
3-4. Outdoor Inverter (460V model) ......................................................................................... 34
3-5. Parts Layout in Outdoor Unit ............................................................................................ 35
3-6. Parts Layout in Inverter Assembly ................................................................................... 37
3-7. Outdoor (Inverter) print circuit board ............................................................................... 41
3-7-1. Interface P.C. board (MCC-1606) ........................................................................................ 41
3-7-2. Inverter P.C. board for compressor (MCC-1595) A3-IPDU
For 208/230V model : MMY-MAP
∗∗∗
4FT9UL .................................................................. 42
3-7-3. Inverter P.C. board for compressor (MCC-1596) A3-IPDU
For 460V model : MMY-MAP
∗∗∗
4FT6UL.......................................................................... 43
3-7-4. Inverter P.C. board for fan motor (MCC-1610) FAN-IPDU ................................................. 44
3-7-5. Noise Filter P.C. board (MCC-1608 -A, -B)
For 208/230V model : MMY-MAP
∗∗∗
4FT9UL .................................................................. 45
3-7-6. Noise Filter P.C. board (MCC-1625 -A, -B, -C)
For 460V model : MMY-MAP
∗∗∗
4FT6UL.......................................................................... 46
4. REFRIGERANT PIPING SYSTEMATIC DRAWING ............................................... 47
5. SYSTEM REFRIGEERANT PIPING SCHEMATIC DIAGRAMS ............................ 51
5-1. All Cooling mode (Operation of cooling only) when outside temperature is high
(Standard: 50°F or higher) / Defrost mode ....................................................................... 52
5-2. All Cooling mode (Operation of cooling only) when outside temperature is low
(Standard: 50°F or lower) ................................................................................................... 53
5-3. All Heating mode (Operation of heating only)................................................................. 54
5-4. Mainly cooling mode (Operating cooling function mainly, collective operation of
cooling and heating operation)......................................................................................... 55
5-5. Mainly heating mode (Operating heating function mainly, collective operation of
cooling and heating operation)......................................................................................... 56
5-6. Emergency operation (All cooling operation at backup of the header unit) ................ 57
5-7. Emergency operation (All heating operation at backup of the header unit) ................ 58
5-8. Refrigerant recovery (during pump-down operation) of the troubled outdoor unit)
(In case of trouble of follower unit) .................................................................................. 59
6. CONTROL OUTLINE .............................................................................................. 60
7. APPLIED CONTROL AND FUNCTION ................................................................. 69
7-1. Applied Control for Outdoor Unit ..................................................................................... 69
7-2. Outdoor Fan High Static Pressure Shift .......................................................................... 69
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