IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Please Read Before Starting
Check of Density Limit
Precautions for Installation Using New Refrigerant
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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
1-5. Tubing Size
1-6. Straight Equivalent Length of Joints
1-7. Additional Refrigerant Charge
1-8. System Limitations
1-9. Tubing Length
1-10. Check of Limit Density
1-11. Installing Distribution Joint
1-12 Optional Distribution Joint Kit
1-13. Optional Ball Valve Kit
1-14. Recommended Location of Ball Valves
1-15. Example of Tubing Size Selection and
Refrigerant Charge Amount
2. SELECTING THE INSTALLATION SITE . . . . .21
2-1. Indoor Unit
2-2. Outdoor Unit
2-3. Air Discharge Chamber for Top Discharge
2-4. Installing the Unit in Heavy Snow Areas
2-5. Precautions for Installation in Heavy Snow
Areas
2-6. Dimensions of Air-Discharge Chamber
2-7. Dimensions of Outdoor Unit with
Air-Discharge Chamber (field supply)
2-8. Dimensions of Snow Ducting
2-9. Dimensions of Outdoor Unit with
Snow-Proof Vents (field supply)
3. HOW TO INSTALL THE INDOOR UNIT . . . . . .29
1-Way Air Discharge Semi-Concealed Type
(AS1S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .29
3-1. Suspending the Indoor Unit
3-2. Placing the Unit Inside the Ceiling
3-3. Installing the Drain Piping
3-4. Checking the Drainage
1-Way Air Discharge Semi-Concealed Slim Type
(ASBS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .34
3-5. Suspending the Indoor Unit
3-6. Placing the Unit Inside the Ceiling
3-7. Installing the Drain Piping
3-8. Checking the Drainage
2-Way Air Discharge Semi-Concealed Type
(AS2S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .39
3-9. Suspending the Indoor Unit
3-10. Placing the Unit Inside the Ceiling
3-11. Installing the Drain Piping
3-12. Checking the Drainage
4-Way Air Discharge Semi-Concealed Type
(ASS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
3-13. Preparation for Suspending
3-14. Suspending the Indoor Unit
3-15. Placing the Unit Inside the Ceiling
3-16. Installing the Drain Piping
3-17. Checking the Drainage
Wall-Mounted Type (AWS Type) . . . . . . . . . . . .47
3-18. Removing the Rear Panel from the Unit
3-19. Selecting and Making a Hole
3-20. Installing the Rear Panel onto the Wall
3-21. Removing the Grille to Install the Indoor Unit
3-22. Preparing the Tubing
3-23. Shaping the Tubing
3-24. Installing the Drain Hose
Ceiling-Mounted Type (ACS Type) . . . . . . . . . .51
3-25. Required Minimum Space for Installation and
Service
3-26. Suspending the Indoor Unit
3-27. Duct for Fresh Air
3-28. Shaping the Tubing
3-29. Installing the Drain Piping
Concealed-Duct Type (ADS Type) . . . . . . . . . .58
3-30. Required Minimum Space for Installation and
Service
3-31. Suspending the Indoor Unit
3-32. Installing the Drain Piping
3-33. Checking the Drainage
3-34. Increasing the Fan Speed
Concealed-Duct High Static Pressure Type
(ADPS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .63
3-35. Required Minimum Space for Installation and
Service (73, 106, 140 Type)
3-36. Suspending the Indoor Unit
3-37. Installing the Drain Piping
3-38. Caution for Ducting Work
Floor-Standing Type (AFS Type)
Concealed Floor-Standing Type (AFNS Type) . . .67
3-39. Required Minimum Space for Installation and
Service
3-40. Dimensions and Part Names
3-41. Removing and Attaching the Front Panel
(Floor-Standing Type)
3-42. Installing the Refrigerant Tubing
3-43. Installing the Drain Piping
3-44. Installing the Remote Controller
4. HOW TO INSTALL THE OUTDOOR UNIT . . . .72
4-1. Installing the Outdoor Unit
4-2. Drainage Work
4-3. Routing the Tubing and Wiring
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