1 Safety Precautions ..........................................................................................1
2 Outline of the Unit and Main Parts...................................................................2
3 Preparative for Installation ...............................................................................3
3.1 Standard Accessory Parts .......................................................................... 3
3.2 Selection of the Installation Location .......................................................... 4
3.3 Connection Pipe Requirement ................................................................... 5
3.4 Electrical Requirement ...............................................................................6
4 Installation of the Unit ......................................................................................7
4.1 Installation of the Indoor Unit ...................................................................... 7
4.2 Installation of the Outdoor Unit ................................................................. 11
4.3 Installation of the Connection Pipe ........................................................... 12
4.4 Vacuum and Gas Leakage Inspection ...................................................... 16
4.5 Installation of the Drain Hose ................................................................... 17
4.6 Installation of the Duct ..............................................................................20
4.7 Electrical Wiring ........................................................................................23
5 Installation of Controllers ...............................................................................28
6 Test Running ..................................................................................................28
6.1 Trial Operation and Testing ....................................................................... 28
6.2.Working Temperature Range .................................................................... 29
7 Unit Function .................................................................................................30
7.1 Setting of Double Indoor Room Sensors .................................................. 30
7.2 Checking of Outdoor Ambient Temperature ............................................. 30
7.3 Fresh Air Control ......................................................................................31
8 Troubleshooting and Maintenance ................................................................32
8.1 Troubleshooting ........................................................................................32
8.2 Routine Maintenance ...............................................................................32
Contents