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Contents
1
PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT ....
3
[1] Storage of Piping Material ................................................................. 4
[2] Piping Machining ............................................................................... 5
[3] Necessary Apparatus and Materials and Notes on Their Handling .. 6
[4] Brazing .............................................................................................. 7
[5] Airtightness Test ................................................................................ 8
[6] Vacuuming ........................................................................................ 8
[7] Charging of Refrigerant ..................................................................... 9
[8] Dryer ................................................................................................. 9
2
COMPONENT OF EQUIPMENT ...........................................................
10
[1] Appearance of Components ........................................................... 10
[2] Refrigerant Circuit Diagram and Thermal Sensor ........................... 18
[3] Electrical Wiring Diagram ................................................................ 24
[4] Standard Operation Data ................................................................ 33
[5] Function of Dip SW and Rotary SW ................................................ 41
3
TEST RUN .............................................................................................
47
[1] Before Test Run .............................................................................. 47
[2] Test Run Method ............................................................................. 51
4
GROUPING REGISTRATION OF INDOOR UNITS WITH REMOTE
CONTROLLER .......................................................................................
52
5
CONTROL ..............................................................................................
58
[1] Control of Outdoor Unit ................................................................... 58
[2] Control of BC Controller .................................................................. 63
[3] Operation Flow Chart ...................................................................... 64
[4] List of Major Component Functions ................................................ 70
[5] Resistance of Temperature Sensor ................................................. 73
6
REFRIGERANT AMOUNT ADJUSTMENT ............................................
74
[1] Refrigerant Amount and Operating Characteristics ........................ 74
[2] Adjustment and Judgement of Refrigerant Amount ........................ 74
7
TROUBLESHOOTING ...........................................................................
84
[1] Principal Parts ................................................................................. 84
[2] BC Controller Disassembly Procedure .......................................... 113
[3] Self-diagnosis and Countermeasures Depending on the Check
Code Displayed .............................................................................. 119
[4] LED Monitor Display ..................................................................... 142
8
PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN
REPAIRING LEAKS .............................................................................
161
[1] Location of leaks: Extension piping or indoor units (when cooling) 161
[4] Location of leaks: Outdoor unit (when heating) ............................ 163
9
CHECK THE COMPOSITION OF THE REFRIGERANT
(PURY-P200·250YMF-C only) ................................................................
164
