8
IMPORTANT! ...................................... 2
Please Read Before Starting
Check of Density Limit
Precautions for Installation Using New Refrigerant
Important Information Regarding The Refrigerant Used
1. GENERAL ...................................... 9
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied with Outdoor Unit
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. Installation Standards
1-11. Check of Limit Density
1-12. Installing Distribution Joint
1-13. Optional Distribution Joint Kits
1-14. Optional Solenoid Valve Kit
1-15. Example of Tubing Size Selection and Refrigerant
Charge Amount
2. SELECTING THE INSTALLATION SITE ............. 21
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 ........................... 30
4-1. General Precautions on Wiring
4-2. Wire Length and Wire Diameter for Power Supply
System
4-3. Wiring System Diagram
4-4. Connecting Multiple Indoor Units to a Single Solenoid
Valve Kit
5. HOW TO PROCESS TUBING ..................... 42
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 .................................. 47
7. TEST RUN .................................... 49
7-1. Preparing for Test Run
7-2. Test Run Procedure
7-3. Main Outdoor Unit PCB Setting
7-4. Auto Address Setting
7-5. Setting Test Run Remote Controller
7-6. Caution for Pump Down
7-7. Self-Diagnosis Function Table and Contents of Alarm
Display
SUPPLEMENT .................................... 71
CONTENTS
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