This document provides installation instructions and safety considerations for MODELS Ceiling-mounted Duct type FXMQ30MVJU FXMQ36MVJU FXMQ48MVJU and Ceiling-mounted Built-in type FXSQ12MVJU FXSQ30MVJU FXSQ18MVJU FXSQ36MVJU FXSQ24MVJU FXSQ48MVJU. It covers topics such as selecting the installation site, preparations before installation, indoor unit installation, refrigerant piping work, drain piping work, and electric wiring work.