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12.2.6 Piping Insulation
1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation
Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
2 If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by
using POLY-E FOAM with thickness 6 mm or above.
12.2.7 Cutting and Flaring the Piping
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
1. To cut
When properly fl ared, the internal surface of the fl are will evenly
shine and be of even thickness. Since the fl are part comes into
contact with the connections, carefully check the fl are fi nish.
■ Improper fl aring ■
Inclined Surface
damaged
Cracked Uneven
thickness
Bar
0 – 0.5 mm
Copper
pipe
Reamer
2. To remove burrs
Point down
Pipe
3. To fl are
Bar
Handle
Core
Yo k e
Clamp
handle
Red arrow mark
12.2.8 Disposal of Outdoor Unit Drain Water
If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm.
If the unit is used in an area where temperature falls below 0°C for 2 or 3 days in succession, it is recommended
not to use a drain elbow, for the drain water freezes and the fan will not rotate.
Hose
Install the hose at an angle so that the water smoothly fl ows out.
Drain elbow
1
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