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Refrigerant piping
Connection
Page 34
Name
Shape Quantity(PC)
Parts you must purchase
separately. Consult the dealer
about the proper pipe size of
the unit you purchased.
Connecting pipe
assembly
Liquid side
Gas side
Φ
1/4 i n(6.35)
Φ 3/8in(9.52)
Φ 5/8in(16)
Φ 1/ 2in(12.7)
Φ 3/4in(19)
Φ 7/8in(22)
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 operaon and minimize the need for future
maintenance.
1. Measure the distance between the indoor and
outdoor units.
2. Using a pipe cuer, cut the pipe a lile 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 cung. This will
drascally reduce the heang efficiency
of the unit.
CAUTION
• The branching pipe must be installed
horizontally. An angle of more than 10° may
cause malfuncon.
• DO NOT install the connecng pipe unl
both indoor and outdoor units have been
installed.
• Insulate both the gas and liquid piping to
prevent water leakage.
Step 3: Flare pipe ends
Proper flaring is essenal to achieve an airght seal.
1.
Aer removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
2.
Sheath the pipe with insulang material.
3.
Place flare nuts on both ends of pipe. Make sure
they are facing in the right direcon, because you
can’t put them on or change their direcon aer
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 secon of the pipe.
Pipe
Reamer
Point down
Step 2: Remove burrs.
Burrs can affect the air-ght seal of refrigerant piping
connecon. They must be completely removed.
1.
Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
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