Table of Contents
CONTENTS
I Read Before Servicing
[1] Read Before Servicing.............................................................................................................. 3
[2] Necessary Tools and Materials ................................................................................................ 4
[3] Storage of Piping ...................................................................................................................... 5
[4] Pipe Processing........................................................................................................................ 5
[5] Brazing...................................................................................................................................... 6
[6] Air Tightness Test..................................................................................................................... 7
[7] Vacuum Drying (Evacuation) .................................................................................................... 8
[8] Refrigerant Charging .............................................................................................................. 10
[9] Remedies to be taken in case of a Refrigerant Leak.............................................................. 10
[10] Characteristics of the Conventional and the New Refrigerants ............................................ 11
[11] Notes on Refrigerating Machine Oil...................................................................................... 12
[1] System configuration .............................................................................................................. 15
[2] Types and Maximum allowable Length of Cables .................................................................. 16
[3] Switch Settings and Address Settings .................................................................................... 22
[4] Sample System Connection ................................................................................................... 28
[5] An Example of a System to which an MA Remote Controller is connected ........................... 30
[6] An Example of a System to which an ME Remote Controller is connected ........................... 42
ME Remote Controller are connected .................................................................................... 44
[8] Restrictions on Pipe Length.................................................................................................... 47
[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 57
[2] Control Box of the Outdoor Unit.............................................................................................. 59
[3] Outdoor Unit Circuit Board...................................................................................................... 60
[4] BC Controller Components..................................................................................................... 65
[5] Control Box of the BC Controller ............................................................................................ 68
[6] BC Controller Circuit Board .................................................................................................... 69
[1] Functions and Specifications of MA and ME Remote Controllers .......................................... 73
[2] Group Settings and Interlock Settings via the ME Remote Controller .................................... 74
[3] Interlock Settings via the MA Remote Controller .................................................................... 78
[4] Using the built-in Temperature Sensor on the Remote Controller.......................................... 79
[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 83
[2] Electrical Wiring Diagram of the BC Controller....................................................................... 84
[3] Electrical Wiring Diagram of Transmission Booster................................................................ 93
[1] Refrigerant Circuit Diagram .................................................................................................... 97
[2] Principal Parts and Functions ............................................................................................... 101
[1] Functions and Factory Settings of the Dipswitches .............................................................. 111
[2] Controlling the Outdoor Unit ................................................................................................. 117
[3] Controlling BC Controller ...................................................................................................... 128
[4] Operation Flow Chart............................................................................................................ 129
[1] Items to be checked before a Test Run................................................................................ 137
[2] Test Run Method .................................................................................................................. 138
[3] Operating Characteristic and Refrigerant Amount................................................................ 139
[4] Adjusting the Refrigerant Amount......................................................................................... 139
[5] Refrigerant Amount Adjust Mode.......................................................................................... 142
[6] The following symptoms are normal. .................................................................................... 144
[7] Standard Operation Data (Reference Data) ......................................................................... 145
HWE10020
GB
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