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Drainage
1. Run the drain hose sloped downwards.
NOTE
• The hole should be made at a slight downward slant on the outdoor side.
Do not rise the
drain hose.
50 mm
or more
Do not put the
drain hose end
into water.
Installation Place
• A place which provides the spaces around the outdoor unit as shown in the
diagram
• A place which can bear the weight of the outdoor unit and does not allow an
increase in noise level and vibration
• A place where the operation noise and discharged air do not disturb your
neighbors
• A place which is not exposed to a strong wind
• A place free of a leakage of combustible gases
• A place which does not block a passage
• When the outdoor unit is to be installed in an elevated position, be sure to
secure its feet.
• The allowable length of the connecting pipe.
Model
Chargeless
Maximum length
Additional refrigerant
charging
Maximum refrigerant
charging
• The allowable height of outdoor unit installation site.
Model
Maximum height
• A place where the drain water does not raise any problems
Precautions for adding refrigerant
Use a scale having a precision with at least 10 g per index line when adding
the refrigerant.
Do not use a bathroom scale or similar instrument.
CAUTION
When the outdoor unit is installed in a place where the drain water
might cause any problems, Seal the water leakage point tightly using a
silicone adhesive or caulking compound.
Do not form the
drain hose into
a wavy shape.
Do not put the
drain hose end
in the drainage ditch.
OUTDOOR UNIT
OUTDOOR UNIT
38TVBA018
38TVBA024
Up to 15 m
Up to 15 m
20 m
20 m
16 - 20 m
16 - 20 m
(20 g / 1 m)
(20 g / 1 m)
1.050 kg
1.060 kg
38TVBA018
38TVBA024
12 m
12 m
2. Put water in the drain pan and make sure that the water is drained out of
doors.
3. When connecting extension drain hose, insulate the connecting part of
extension drain hose with shield pipe.
Drain hose
CAUTION
Arrange the drain pipe for proper drainage from the unit.
Improper drainage can result in dew-dropping.
This air conditioner has the structure designed
to drain water collected from dew, which forms
on the back of the indoor unit, to the drain pan.
Therefore, do not store the power cord and other
parts at a height above the drain guide.
CAUTION
1. Install the outdoor unit without anything blocking the air discharging.
2. When the outdoor unit is installed in a place always exposed to strong
wind like a coast or on a high storey of a building, secure the normal fan
operation using a duct or a windshield.
3. In particularly windy areas, install the unit such as to avoid admission of
wind.
4. Installation in the following places may result in trouble.
Do not install the unit in such places.
• A place full of machine oil
• A saline-place such as the coast
• A place full of sulfi de gas
• A place where high-frequency
waves are likely to be generated
as from audio equipment, welders,
and medical equipment
Refrigerant Piping Connection
Flaring
1. Cut the pipe with a pipe cutter.
90
2. Insert a fl are nut into the pipe and fl are the pipe.
• Projection margin in fl aring : A (Unit : mm)
RIDGID (clutch type)
Outer dia.
of copper pipe
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
IMPERIAL (wing nut type)
A
Outer dia. of copper pipe
Die
Pipe
CAUTION
• Do not scratch the inner surface of the fl are part when removing burrs
• Flare processing under the condition of scratches on the inner surface
of fl are processing part will cause refrigerant gas leak.
10
Shield pipe
Extension drain hose
Inside the room
Space for pipes
Strong
wind
Obliquity
Roughness
Conventional tool
R32 tool used
0 to 0.5
1.0 to 1.5
0 to 0.5
1.0 to 1.5
0 to 0.5
1.0 to 1.5
0.8 mm or more
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
0.8 mm or more
Wall
Drain
guide
Warp
used
R32
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
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