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Connection Instructions—Refrigerant Piping
CAUTION
The branching pipe must be installed horizontally. An angle of more than 10°
•
may cause malfunction.
DO NOT install the connecting pipe until both indoor and outdoor units have
•
been installed.
Insulate both the gas and liquid piping to prevent condensation.
•
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.
Measure the distance between the
indoor and outdoor units.
•
Using a pipe cutter, cut the pipe a
little longer than the measured
•
distance.
Make sure that the pipe is cut at a
perfect 90° angle.
•
90°
Oblique
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
Rough
Warped
Step 2: Remove burrs
Burrs can affect the air-tight seal of refrigerant piping
connection. They must be completely removed.
Hold the pipe at a downward angle to prevent
•
burrs from falling into the pipe.
Using a reamer or deburring tool, remove all burrs
•
from the cut section of the pipe.
Point down
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight seal.
•
After removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
•
Sheath the pipe with insulating material.
•
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
•
Remove PVC tape from ends of pipe when ready
to perform flaring work.
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Pipe
Reamer
V.1
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