Ducted Installation Manual

En-6
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 envi-
ronment.
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: in (mm)
11 (280)
1-9/16 (40)
11-13/16 (300)
5-1/16 (128)
2-9/16 (65)
5-11/16 (145)
9-1/8 (232)
1-1/8 (29)
Drain pipe
O.D. Ø1-1/4 (32)
Drain pipe
O.D. Ø1-1/4 (32)
(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
[outside diameter 1-1/16 in (26.6 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.
Unit: in (mm)
Hose band (Accessory)
Soft PVC side
Area to
apply
adhesive
Joint pipe
(Locally purchased)
Drain pipe [O.D. 1-1/16 (26.6)]
(Locally purchased)
3/16~3/8
(5~10)
13/16 (20)
Drain hose
(Accessory)
3/16 (4) or less
9/16 (15)
Indoor unit
Drain hose
3-15/16 in
(100 mm)
Drain hose insulation
(Accessory)
Hose band (Accessory)
Overlap the heat insulation.
Drain hose insulation
(Accessory)
■
When drain pump is used
Unit: in (mm)
Gap of 60 to 79 (1,500 to 2,000)
27 (700) or less
Horizontal or
upward gradient
Supporter
Max.
12 (300)
Locally arranged pipe
GOOD
O.D 1-1/16 (26.6)
or more
Rise
Air bleeding
PROHIBITED
Trap
Observe the following procedures to construct centralized drain pipe
fi ttings.
O.D 1-1/2 in (38 mm) or more
Downward gradient 1/100 or more
28 in (700 mm) or less
■
When drain pump is not used (Natural drainage)
If the drain pump is not used, please move the position of the drain cap and insulation.
NOTE:
• Install the drain pipe with downward gradient (1/50 to 1/100) and so there are no rises or
traps in the pipe.
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