Content 
1 Safety Notices (Please be sure to abide them) ....................................................... 1 
2 Installation of Indoor Unit.......................................................................................... 1 
2.1 Indoor Unit ........................................................................................................................ 3 
2.2 Refrigerant Piping ............................................................................................................. 5 
2.3 Drain Piping ...................................................................................................................... 6 
2.4 Installing Indoor Unit ......................................................................................................... 7 
2.5 Wiring Requirements .......................................................................................................12 
3 Constitutes and Names of Every Part of Indoor Unit ............................................ 13 
4 Working Temperature Range .................................................................................. 15 
5 Remote Controller YAP1F ....................................................................................... 15 
5.1 Button Name and Function Introduction ...........................................................................15 
5.2 Preparation before Operation ..........................................................................................16 
5.3 Introduction of Operation Function ...................................................................................16 
5.4 Introduction of Special Function .......................................................................................19 
5.5 Replacing Batteries in Remote Controller and NOTE .......................................................19 
6 Maintenance Method ............................................................................................... 20 
6.1 Units ................................................................................................................................20 
6.2 Front Panel ......................................................................................................................20 
6.3 Filters...............................................................................................................................21 
6.4 Titanium Apatite Photocatalytic ........................................................................................22 
6.5 Replacement ...................................................................................................................23 
6.6 Before a Long Idle Period ................................................................................................23 
7 Function Description of Functional Dial Switch S7 .............................................. 24 
8 Malfunction Analyzing ............................................................................................. 24 
8.1 Service Center .................................................................................................................25 
8.2 After-Sales Service ..........................................................................................................25