21Installation of indoor unitSynchronousmotorLiquid intakepipe Water drainpipeV. Installing decorative sheetsWater drainpipePipeFaucetDisplayingsignalsBackflow pipe1. Verify with water level or water filled Polyethylene pipe that the indoor unit is horizontallyinstalled and specifications of the holes on the ceilings are correct. Remove the water levelbefore installing the decorative sheets.2. Tighten the screws of the indoor unit ensuring that the height difference between the twosides of the indoor unit is less than 5mm.3. Apply two screws for preliminary fixing.4. Apply the other and then tighten the four screws.5. Connect the cable of the synchronous motor.6. Connect the signal cables.7. Verify that cable is correctly connected if the unit does not respond to remote controllersignals. Allow a 10-second lapse after disconnection of the power supply, and then restartthe remote controller.Restrictions for top panel installation1. Top panel is installed as shown in the figure.2. Incorrect installation of the top panel may result inair leaks and fluctuation, as well as failure of signaltransmission and display.