2  FLOW CHART OF INSTALLATION.............................................................................67
3
  OUTDOOR UNIT INSTALLATION ...............................................................................68 
3.1  Precautions for R410A.........................................................................................................68 
3.2  Precaution for Installation....................................................................................................68 
3.3  Names of Main Parts............................................................................................................68 
3.4  Parts and Components of Unit .............................................................................................69 
3.5  Selection of Installation Location ........................................................................................ 69 
3.6  Outline Dimension of the Outdoor Unit ..............................................................................70 
3.7  Installation and Servicing Space ..........................................................................................70 
3.8  Installation of the Outdoor Unit...........................................................................................71 
4  INDOOR UNIT INSTALLATION ...................................................................................72
4.1
  Installation of Wall Mounted Type.......................................................................................72 
4.2  Installation of Duct Type......................................................................................................75 
4.3  Installation of Cassette Type ................................................................................................83 
4.4  Installation of Floor Ceiling Type ........................................................................................89 
4.5  Installation of Console Type ................................................................................................93 
5  BU MODULE INSTALLATION ...................................................................................... 97 
5.1  Precaution for Installation....................................................................................................97 
5.2  Names of Main Parts............................................................................................................97 
5.3  Combinations for Outdoor and Indoor Units .......................................................................98 
5.4  Selection of Installation Location ........................................................................................ 98 
5.5  Outline Dimension and Servicing Space of FXA2A-K.......................................................99 
5.6  Outline Dimension and Servicing Space of FXA2B-K .....................................................100 
5.7  Outline Dimension and Servicing Space of FXA3A-K.....................................................101 
5.8  Outline Dimension and Servicing Space of FXA3B-K .....................................................102 
5.9  Installation Instruction .......................................................................................................103 
6  REFRIGERATION PIPING WORK.............................................................................104 
6.1  Manifold Mode of Connecting Pipe...................................................................................104 
6.2  Allowable Length and Drop Height of Connecting Pipe...................................................105 
6.3  Dimension of Connecting Pipe ..........................................................................................105 
6.4  Connection of Branch Pipe ................................................................................................106 
6.5  Design Requirements for Oil Trap.....................................................................................106 
6.6  Connection of Outdoor Unit Refrigerant Pipe ...................................................................108 
6.7  Installation of Piping Adapter ............................................................................................108 
6.8  Precaution for Connection ................................................................................................. 111 
6.9  Leak Test ............................................................................................................................ 112 
6.10  Vacuum Operation....................................................................................................... 112 
6.11 Refrigerant Charging.......................................................................................................... 113 
7  Electrical Wiring Work ................................................................................................... 116 
7.1  Wiring Connection ............................................................................................................. 116 
7.2  Requirements of Power Circuit and Cable......................................................................... 116 
7.3  Ground Requirements ........................................................................................................ 117 
7.4  Precautions of Electrical Wiring Work .............................................................................. 117 
7.5  Precaution of Laying Wires................................................................................................ 117 
7.6  Electrical Wiring Work for Outdoor Unit .......................................................................... 118 
7.7  Electrical Wiring Work for BU Module............................................................................. 118