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Ceiling Concealed Unit
1. During the connection of the indoor unit and the refrigerant pipe, never pull any joints of
the indoor unit by force: otherwise the capillary pipe or other pipe may crack, which would
then result in leakage.
2. The refrigerant pipe should be supported by brackets, don't let the unit withstand the
weight of the drainage piping.
If the specification of the outdoor unit pipe joint does not conform to that of the indoor unit, then
the joint specification of the outlet pipe of the indoor unit takes precedence. A reducing nipple
shall be installed at the joint of the outdoor unit so as to make the joint of the outdoor unit
compatible with that of the indoor unit.
Installation of the Connection Pipe
Flare Processing
1. Cut the connection pipe with the pipe cutter and remove the burrs.
2. Hold the pipe downward to prevent cuttings from entering the pipe.
3. Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of the
indoor unit, put them onto the connection pipe as shown below then flare the connection pipe
with a flaring tool.
4. Check if the flare part is spread evenly and there are no cracks.
Bending Pipes
1. The pipes should be shaped by your hands. Be careful not to collapse them.
2. Do not bend the pipes in an angle more than 90°
3. When pipes are repeatedly bent or stretched, the material will harden, making it difficult to
bend or stretch them anymore. Do not bend or stretch the pipes more than three times.
CAUTION
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