En-5
4.3.1. Installing the hangers
Hanging bolt installation diagram
460
155
585
500
85
Unit : mm
AIR
AIR
AIR
1,080
1,000
1,050
Hanging bolt M10
(Locally purchased)
Washer
(Locally
purchased)
Special nut A
(Accessories)
Hanger
Special nut B
(Accessories)
CAUTION
• Fasten the unit securely with special nuts A and B.
4.3.2. Leveling
Use the procedure in the following figure to adjust the levelness.
B
A
Level meter
The side A of the unit with the drain port should be slightly lower than the opposite side
B of the unit. The height difference between sides A and B should be from 0 to 20mm.
4.3.3. Mounting the duct
Follow the procedure in the following figure to install the ducts.
865
850
26
295
14
325
14
27
Intake port flange
Outlet port flange
Unit : mm
Spacing between flange and drain pan.
CAUTION
• If an intake duct is installed, take care not to damage the temperature sensor (the
temperature sensor is attached to the intake port flange).
• Be sure to install the air inlet grille and the air outlet grille for air circulation. The
correct temperature cannot be detected. Grills must be installed so that man cannot
touch unit fan, and cannot be removed by only hand operation with tool.
Air Inlet Grille
Air Outlet Grille
(Room)
Unit
• Be sure to install the air filter in the air inlet. If the air filter is not installed, the heat
exchanger may be clogged and its performance may decrease.
4.4. Installing the drain hose
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 con-
nected 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.
To prevent excessive force on drain hose, avoid bends or twists. (To bend or twist may
cause water leaks.)
Install the drain pipes according to the measurements given in the following figure.
Flange positions for connecting the drain pipes.
139
123
108
41
208
356
371
Main drain pipe
ø25.4 (O.D.)
Safety drain pipe
ø25.4 (O.D.)
Unit : mm
CAUTION
• This UNIT has drain ports in two locations. Follow the procedure in the figure to
connect drain pipes to each of them.
• Be sure to properly insulate the drain pipes.
Use general hard polyvinyl chloride pipe (VP25) and connect it with adhesive (polyvinyl
chloride) so that there is no leakage.
Do not perform air bleeding.
(1) Main drain pipe
Provide one trap on the main drain pipe near the indoor unit.
H
1
H
2
Trap
Unit
H
1
= 100 mm (approx.)
H
2
= 50-100 mm
Drain pipe (main)
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