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Refrigerant Piping 
       Connection 
 CAUTION
•  Ensure to wrap insulation around the 
piping. Direct contact with the bare piping 
may result in burns or frostbite.  
•  Make sure the pipe is properly connected. 
Over tightening may damage the bell 
mouth and under tightening may lead to 
leakage.   
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle 
according to the diagram below. DO NOT 
bend the tubing more than 90° or more than 
3 times.  
 
Bend the pipe with thumb
min-radius 10cm (3.9”)
Fig. 6.11
6. After connecting the copper pipes to the 
indoor unit, wrap the power cable, signal 
cable and the piping together with binding 
tape.  
NOTE: DO NOT intertwine signal cable with 
other wires. While bundling these items 
together, do not intertwine or cross the signal 
cable with any other wiring. 
 
 
7. Thread this pipeline through the wall and 
connect it to the outdoor unit.  
8. Insulate all the piping, including the valves 
of the outdoor unit.  
9. Open the stop valves of the outdoor unit 
to start the flow of the refrigerant 
between the indoor and outdoor unit.  
 CAUTION
Check to make sure there is no refrigerant 
leak after completing the installation work. 
If there is a refrigerant leak, ventilate the area 
immediately and evacuate the system (refer 
to the Air Evacuation section of this manual).