Connection Instructions –
Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care
to cut and flare them properly. This will ensure
efficient operation and minimize the need for future
maintenance.
1. Measure the distance between the indoor and
outdoor units.
2.
Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3.
Make sure that the pipe is cut at a perfect 90°
angle.
Oblique Rough Warped
90°
DO NOT DEFORM PIPE
WHILE CUTTING
Be extra careful not to damage, dent, or
deform the pipe while cutting. This will
drastically reduce the heating efficiency
of the unit.
CAUTION
•
Insulate both the gas and liquid piping to
prevent water leakage.
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight seal.
1. After removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of pipe. Make sure
they are facing in the right direction, because you
can’t put them on or change their direction after
flaring.
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when ready
to perform flaring work.
2. Using a reamer or deburring tool, remove all burrs
from the cut section of the pipe.
Pipe
Reamer
Point down
Step 2: Remove burrs.
Burrs can affect the air-tight seal of refrigerant piping
connection. They must be completely removed.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
