Contents
1PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT..... 3
[1] Storage of Piping Material................................................................. 4
[2] Piping Machining............................................................................... 5
[3] Brazing.............................................................................................. 6
[4] Airtightness Test................................................................................ 7
[5] Vacuuming........................................................................................ 7
[6] Charging of Refrigerant..................................................................... 8
[7] Dryer ................................................................................................. 8
2COMPONENT OF EQUIPMENT .............................................................9
[1] Appearance of Components ............................................................. 9
[2] Refrigerant Circuit Diagram and Thermal Sensor........................... 17
[3] Electrical Wiring Diagram................................................................ 20
[4] Standard Operation Data................................................................ 24
[5] Function of Dip SW and Rotary SW................................................ 26
3TEST RUN .............................................................................................29
[1] Before Test Run............................................................................... 29
[2] Test Run Method............................................................................. 33
4GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET
REMOTE CONTROLLER ......................................................................34
5CONTROL.............................................................................................. 40
[1] Control of Outdoor Unit................................................................... 40
[2] Control of BC Controller.................................................................. 49
[3] Operation Flow Chart...................................................................... 50
[4] List of Major Component Functions ................................................ 56
[5] Resistance of Temperature Sensor................................................. 59
6REFRIGERANT AMOUNT ADJUSTMENT............................................ 60
[1] Operating Characteristics and Refrigerant Amount........................ 60
[2] Adjustment and Judgement of Refrigerant Amount........................ 60
[3] Refrigerant Volume Adjustment Mode Operation............................ 62
7TROUBLESHOOTING ........................................................................... 66
[1] Principal Parts................................................................................. 66
[2] BC Controller Disassembly Procedure............................................ 99
[3] Self-diagnosis and Countermeasures Depending on the Check
Code Displayed............................................................................. 104
[4] LED Monitor Display ..................................................................... 121
8PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN
REPAIRING LEAKS............................................................................. 141
[1] Location of leaks:
Extension piping or indoor units (when cooling) ...
141
[2] Location of leaks: Outdoor unit (Cooling mode)............................ 142
[3] Location of leaks:
Extension piping or indoor units (Heating mode)..
142
[4] Location of leaks: Outdoor unit (when heating)............................. 143
9CHECK THE COMPOSITION OF THE REFRIGERANT
(PURY-P200·250YMF-C only).................................................................144
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