Table Of Contents; Please Read Before Starting; Check Of Density Limit; Precautions For Installation Using New Refrigerant - Panasonic U-72MF1U9 Installation Instructions Manual

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. 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 ............. 20
2-1. Outdoor Unit
2-2. Removing Fin Guard for Heat Exchanger
2-3. Shield for Horizontal Exhaust Discharge
2-4. Installing the Outdoor Unit in Heavy Snow
Areas
2-5. Precautions When Installing in Heavy Snow
Areas
2-6. Dimensions of Wind Ducting
2-7. Dimensions of Snow Ducting
3. HOW TO INSTALL THE OUTDOOR UNIT .............. 24
3-1. Transporting
3-2. Installing the Outdoor Unit
3-3. Remove the Brackets Used for Transport
3-4. Routing the Tubing
3-5. Prepare the Tubing
3-6. 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
CONTENTS
Page
5. HOW TO PROCESS TUBING .............................. 32
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 ...................................................... 36
■ Air Purging with a Vacuum Pump (for Test Run)
Preparation
7. TEST RUN ............................................................ 39
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. Remote Controller Test Run Settings
7-6. Caution for Pump Down
7-7. Meaning of Alarm Messages
6
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