4
IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Please Read Before Starting
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied with Unit
1-3. Type of Copper Tube and Insulation Material
1-4. Additional Materials Required for Installation
2. SELECTING THE INSTALLATION SITE . . . . . . . . . . . . . . 6
2-1. Indoor Unit
3. HOW TO INSTALL THE INDOOR UNIT . . . . . . . . . . . . . . . 6
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4-Way Cassette 60 × 60 Type (Y1 Type) . . . . . . . . . . . . . . . 6
3-1. Preparation for Ceiling Suspension
3-2. Mounting the Suspension Bolts
3-3. Placing the Unit Inside the Ceiling
3-4. Installing the Drain Pipe
3-5. Checking the Drainage
4. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4-1. General Precautions on Wiring
4-2. Recommended Wire Length and Wire Diameter
for Power Supply System
4-3. Wiring System Diagrams
5. HOW TO PROCESS TUBING . . . . . . . . . . . . . . . . . . . . . 12
5-1. Connecting the Refrigerant Tubing
5-2. Connecting Tubing Between Indoor and
Outdoor Units
5-3. Insulating the Refrigerant Tubing
5-4. Taping the Tubes
5-5. Finishing the Installation
6. HOW TO INSTALL THE TIMER REMOTE CONTROLLER
(OPTIONAL PART) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
NOTE
Refer to the Operating Instructions attached to the optional
Timer Remote Controller.
7. HOW TO INSTALL THE CEILING PANEL . . . . . . . . . . . . . 14
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4-Way Cassette 60 × 60 Type (Y1 Type) . . . . . . . . . . . . . . 14
7-1. Before Installing the Ceiling Panel
7-2. Installing the Ceiling Panel
7-3. Wiring the Ceiling Panel
7-4. How to Attach the Corner and Air Intake Grille
7-5. Checking After Installation
7-6. When Removing the Ceiling Panel for Servicing
7-7. Adjusting the Auto Flap
8. HOW TO INSTALL WIRELESS REMOTE
CONTROLLER RECEIVER . . . . . . . . . . . . . . . . . . . . . . . 17
NOTE
Refer to the Operating Instructions attached to the optional
Wireless Remote Controller Receiver.
9. APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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Care and Cleaning
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Troubleshooting
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Tips for Energy Saving
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