En-7
CAUTION
Fasten the unit securely with special nuts A and B so that the unit does not fall.
3. 3. 3. Leveling
Base vertical direction leveling on the unit (right and left).
(Right side)
Level
AIR
AIR
Base horizontal direction leveling on top of the unit.
Drain hose
0 – 5 mm
Level
Give a slight tilt to the side to which the drain hose is connected. The tilt should be in the
range of 0 mm to 5 mm.
3. 4. Intake duct connection
Follow the procedure in the following fi gure.
*12/14/36/45/54 model is different from the fi gure.
(Back side)
12/14 model : 700 mm
18/22/24/30 model : 1000 mm
36/45/54 model : 1400 mm
300 mm
The air inlet duct can be changed by replacing the intake grille and service panel.
For the bottom air intake, position (1) the intake grille, and (2) the service panel, as shown
in the following fi gure. (The factory setting is back air intake.)
(2)
(1)
CAUTION
• Make sure the drain water is properly drained.
• To prevent people from touching the parts inside the unit, be sure to install grilles on
the inlet and outlet ports. The grilles must be designed in such a way that cannot be
removed without tools.
• Set the appropriate external static pressure within the permissible range. (Refer to
“6. FUNCTION SETTING”)
• If an intake duct is installed, take care not to damage the temperature sensor (the
temperature sensor is attached to the intake port fl ange).
• Be sure to Install the air inlet grille and air outlet grille for air circulation. The correct
temperature cannot be detected.
Unit
Air Outlet Grille
(Field supply)
Air Inlet Grille
(Field supply)
(Room)
Duct
(Field supply)
• When connecting the duct, perform duct-insulation appropriate for the installing
environment.
Inappropriate insulation work may cause condensation on the surface of the insulat-
ing material, and may lead to condensation dripping.
3. 5. Drain installation
CAUTION
• Install the drain hose in accordance with the instructions in this installation manual
and keep the area warm enough to prevent condensation. Problems with the piping
may lead to water leaks.
• Be sure to properly insulate the drain hose so that the water will not drip from the
connected parts.
• The position of the installed drain hose should have a downward gradient of 1/100 or
more.
• Do not connect the drain hose in which ammonia or other types of gas affecting the
unit is generated. Heat exchange erosion may occur.
Install the drain hose according to the measurements given in the following fi gure.
Unit: mm
280
40
300
128
65
145
232
29
Drain pipe
Ø32 mm (O.D.)
Drain pipe
Ø32 mm (O.D.)
(Right side)
3. 5. 1. Installing the drain hose
(1) Install the drain hose (accessory) to the drain port of the indoor unit. Attach the hose
band around the hose within the dimension shown. Secure fi rmly with the hose band.
(2) Attach the drain pipe (locally purchased). Use general hard polyvinyl chloride pipe
(VP25) [outside diameter 32 mm] and connect it with adhesive (polyvinyl chloride) so
that there is no leakage.
(3) Check the drainage.
(4) Wrap the drain hose insulation around the drain hose connection.
Hose band (Accessory)
Soft PVC side
Area to
apply
adhesive
Joint pipe
(Locally purchased)
Drain pipe (VP25)
(Locally purchased)
5~10 mm
20 mm
Drain hose
(Accessory)
4 mm or less
15 mm
9381386215-01_IM.indb 79381386215-01_IM.indb 7 12/5/2018 2:57:36 PM12/5/2018 2:57:36 PM
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