• Holes are provided on the base plate of the outdoor unit to ensure that the
defrost water produced during heating operations is drained off eff ciently.
If a centralized drain is required when installing the unit on a balcony or
wall, follow the steps below to drain off the water.
1. Proceed with water-proof ng by installing the water-proof rubber caps
in the 2 elongated holes on the base plate of the outdoor unit. [How to
install the water-proof rubber caps]
1) Place four f ngers into each cap, and insert the caps into the water
drain holes by pushing them into place from the underside of the base
plate.
2) Press down on the outer circumferences of the caps to ensure that
they have been inserted tightly.
(Water leaks may result if the caps have not been inserted properly,
if their outer circumferences lift up or the caps catch on or wedge
against something.)
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Drain nipple
2. Install the drain nipple and a commercially available drain hose (with
16 mm inside diameter), and drain off the water.
(For the position where the drain nipple is installed, refer to the
installation diagram of the indoor and outdoor units.)
• Check that the outdoor unit is horizontal, and route the drain hose at a
downward sloped angle while ensuring that it is connected tautly.
Base plate
Drain nipple
Commercially available
drain hose
Do not use ordinary garden hose, but one can f atten and prevent water
from draining.
Draining the Water
10-4-3. Refrigerant piping connection
<Flaring>
1. Cut the pipe with a pipe cutter.
Fig. 10-4-3
2. Insert a flare nut into the pipe, and flare the pipe.
•
Projection margin in flaring : A (Unit : mm)
Fig. 10-4-
4
90
°
Roughness
Obliquity
A
Die
Pipe
Warp
RIDGID
(clutch type)
IMPERIAL
(wing nut type)
Outer dia. of copper pipe
Tool used
Ø6.35
1.5 to 2.0
Ø9.52
1.5 to 2.0
Ø12.70
2.0 to 2.5
Pipes thickness
0.8 mm or more
Outer dia.
of copper pipe
Tool used
Conventional tool
used
Ø6.35
0 to 0.5
1.0 to 1.5
Ø9.52
0 to 0.5
1.0 to 1.5
Ø12.70
0 to 0.5
1.0 to 1.5
Pipes thickness
0.8 mm or more
• Do not scratch the inner surface of the f ared part when removing
burrs.
• Flare processing under the condition of scratches on the inner surface
of f are processing part will cause refrigerant gas leak.
CAUTION
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