EN
UAB KOMFOVENT we reserve the right to make changes without prior notice.
MOU2-20-03
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3. REFRIGERANT PIPING CONNECTION
Safety Precautions
• All eld piping must be completed by a licensed technician and must
comply with the local and national regulations.
• When the air conditioner is installed in a small room, measures must
be taken to prevent the refrigerant concentration in the room from
exceeding the safety limit in the event of refrigerant leakage. If the re-
frigerant leaks and its concentration exceeds its proper limit, hazards
due to lack of oxygen may result.
• When installing the refrigeration system, ensure that air, dust, mois-
ture or foreign substances do not enter the refrigerant circuit. Con-
tamination in the system may cause poor operating capacity, high
pressure in the refrigeration cycle, explosion or injury.
• Ventilate the area immediately if there is refrigerant leakage during
the installation. Leaked refrigerant gas is both toxic and flammable.
Ensure there is no refrigerant leakage after completing the installa-
tion work.
3.1. Notes On Pipe Length and Elevation
Ensure that the length of the refrigerant pipe, the number of bends, and the drop height between the indoor and
outdoor units meets the requirements.
3.2. Refrigerant Piping Connection Instructions
• DO NOT install the connecting pipe until both indoor and outdoor
units have been installed.
• Insulate both the gas and liquid piping to prevent water leakage.
Step1: Cut pipes
When preparing refrigerant pipes, take extra care to cut and flare them properly. This will ensure efcient
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.
• 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 efciency of the unit.
Make sure that the pipe is cut at a perfect 90° angle. Refer to Fig. 3.1 for examples of bad cuts.
Oblique Rough Warped
90°
Fig. 3.1
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