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IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Please Read Before Starting
Check of Density Limit
Precautions for Installation Using New Refrigerant
New refrigerant R410A cannot be used for earlier models
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied
1-3. Type of Copper Tube and Insulation Material
1-4. Additional Materials Required for Installation
1-5. Tubing Length
1-6. Tubing Size
1-7. Straight Equivalent Length of Joints
1-8. Additional Refrigerant Charge
1-9. System Limitations
1-10. Check of Limit Density
1-11. Installing Distribution Joint
1-12. Optional Distribution Joint Kits
1-13. Example of Tubing Size Selection and
Refrigerant Charge Amount
2. SELECTING THE INSTALLATION SITE . . . . . 17
2-1. Outdoor Unit
2-2. Shield for Horizontal Exhaust Discharge
2-3. Installing the Outdoor Unit in Heavy Snow
Areas
2-4. Precautions When Installing in Heavy Snow
Areas
2-5. Dimensions of Wind Ducting
2-6. Dimensions of Snow Ducting
3. HOW TO INSTALL THE OUTDOOR UNIT . . . . 23
3-1. Transporting
3-2. Installing the Outdoor Unit
3-3. Routing the Tubing
3-4. Prepare the Tubing
3-5. Connect the Tubing
4. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . 28
4-1. General Precautions on Wiring
4-2. Recommended Wire Length and Wire
Diameter for Power Supply System
4-3. Wiring System Diagram
00_302411_EN.indd 6
CONTENTS
Page
5. HOW TO PROCESS TUBING . . . . . . . . . . . . . 34
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. AIR PURGING . . . . . . . . . . . . . . . . . . . . . . . . . 37
n Air Purging with a Vacuum Pump (for Test Run)
Preparation
7. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7-1. Preparing for Test Run
7-2. Test Run Procedure
7-3. Main Outdoor Unit PCB Setting
7-4. Function Switches on P.C. Board
7-5. Auto Address Setting
7-6. Setting Test Run Remote Controller
7-7. Caution for Pump Down
7-8. Self-Diagnosis Function Table and Contents of
Alarm Display
6
Page
2018/7/4 13:27:15
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