VRV System air conditioner Installation Manual1EnglishCONTENTSSafety considerations .....................................iCodes and Regulations ..................................ii1. Introduction ...........................................21.1. General information ................................. 21.2. Combinations and options....................... 21.3. Indoor capacity range .............................. 31.4. Scope of the manual ............................... 32. Accessories ...........................................32.1. Accessories supplied with this unit.......... 33. Overview of unit ....................................43.1. Opening the unit ...................................... 43.2. Technical and Electrical specifications .... 43.3. Main components .................................... 44. Selecting an installation location ........44.1. General precautions on installation ......... 44.2. Weather related precautions ................... 54.3. Selecting a location in cold climates ....... 55. Dimensions and service space ............65.1. Dimensions of outdoor unit ..................... 65.2. Service space.......................................... 66. Inspecting, handling and unpackingthe unit ...................................................76.1. Inspection ................................................ 76.2. Handling .................................................. 76.3. Unpacking ............................................... 76.4. Installing the unit ..................................... 86.5. Method for removing shipping plates ...... 86.6. Method for opening the sliding plate ....... 97. Refrigerant pipe size and allowable pipelength .............................................................97.1. General information ................................. 97.2. Selection of piping material ..................... 97.3. Selection of piping size ......................... 107.4. Selection of refrigerant branch kits ........ 117.5. System piping (length) limitations ......... 118. Precautions on refrigerant piping......148.1. Caution for brazing ................................ 148.2. Connecting the refrigerant piping .......... 148.3. Guidelines for handling stop valve......... 179. Field wiring ..........................................189.1. Power circuit, safety device and cablerequirements ......................................... 199.2. Wiring connection example for wholesystem ................................................... 199.3. Leading wire procedure......................... 199.4. Transmission wiring connectionprocedure .............................................. 209.5. Power wiring connection procedure ...... 219.6. Procedure for Wiring Inside Units.......... 2110. Air tight test and vacuum drying .......2211. Pipe insulation .....................................2312. Checking of device and installationconditions ............................................2413. Making field settings ...........................2413.1. Accessing the push buttons on theprinted circuit board............................... 2413.2. Operating the push buttons and DIPswitches on the printed circuit board ..... 2413.3. Connecting the PC configurator to theoutdoor unit ........................................... 2614. Charging refrigerant ............................2614.1. Precautions ........................................... 2614.2. Calculating the additional refrigerantcharge ................................................... 2614.3. Method for adding refrigerant ................ 2815. Start-up and configuration .................3015.1. Checks before initial start up ................. 3015.2. Monitoring function and field settings .... 3115.3. Energy saving and optimum operation ... 3715.4. Test operation ........................................ 3915.5. Malfunction code list.............................. 4016. Operation of the unit ...........................4317. Maintenance and service ....................4317.1. Maintenance introduction ...................... 4317.2. Service precautions............................... 4317.3. Service mode operation ........................ 4418. Caution for refrigerant leaks ..............4418.1. Introduction ........................................... 4419. Disposal requirements........................45The original instructions are written in English. All otherlanguages are translations of the original instructions.