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CAUTION

CAUTION

CAUTION

NOTE

To match the existing structure, set the screw pitch according to the 
product dimensions shown below.

Set using embedded appliances and embedded type of bolts.

Knife-type 

insertion 

piece

Sliding-type 

insertion 

piece

Reinforced bar

Embedded bolt

(hanging and embedded 

bolt for piping)

Newly set concrete slab Structure

Directly set and use an angle steel for support.

Suspension 

bolt

Angle steel 

for support 

Suspension bolt

Steel framework

Square bar material

Beam

Ceiling

Lifting bolt

Place the square bar by crossing the beams and set the lifting 
bolts.

Use embedded bolts, embedded pull bolts, and embedded plug 
columns

Wooden Structure

Original concrete slab Structure

All the figures in the manual explain only the general appearance 
and dimensions of the unit. The air conditioner you purchased 
may not be completely consistent with the appearance and 
functions listed in the figures. Please refer to the actual product.

Figure 4

Figure 5

Figure 6

Ceiling

Main IDU body

53

71

90

105-160

840

840

840

840

230

230

230

300

 A         B          C           D           E           F          G

Before IDU installation, make sure that the buffers used for 
transportation between the fan and the pipe socket are removed. 
Running the unit without removing the buffers may damage the 
fan motor.
Make sure that the IDU body is level; otherwise, it may cause 
water to leak. Calibrate the levelness of the IDU using a spirit 
level or polyethylene tube filled with water.
The IDU is equipped with a built-in drain pump and float switch. 
Do not tilt the unit in the reverse direction of the drain pan; 
otherwise, the float switch may malfunction and cause water 
leakages.

All bolts should be made from high quality carbon steel (with 
galvanized surfaces or other rust preventive treatment) or 
stainless steel.
How the ceiling is treated will differ with the type of building. For 
specific measures, please consult the building and renovation 
engineers.
How the lifting bolt is secured depends on the specific situation, 
and it must be secure and reliable.

Do not place the panel such that it faces downwards or leans 
against the wall. Do not place it on a protruding object either.
Do not hit or squeeze the air deflector.
There is an air vent shorter than the other three vents in the 
panel. This air vent must match the shorter air vent of the unit 
body (see the warning label on the unit body). Otherwise, it will 
cause air leak and water condensation.!

680

680

680

680

Water discharge 
pipe

Main body of air conditioner

5

Remove the air inlet grille.

Grille switch

45°

Press the two grille locks at the 
same time to lift it up.

Raise the air inlet grille to about 
45°, and remove the grille.

680

680

680

680

780

780

780

780

780

780

780

780

126

126

126

197

Main IDU body

53

71

90

105-160

105

105

105

105

70

70

70

70

 H         J          K           L           M           N

46

46

46

46

950

950

950

950

Summary of Contents for OTEC IECS-D Series

Page 1: ......

Page 2: ...sconnection device which has at least 3mm separation distance in all pole and a residual current device RCD with the rating of above 10mA shall be incorporated in the fixed wiring according to the nat...

Page 3: ...requirement 18 Vacuum pump Charge hose R410A special requirement 19 Torque wrench 20 Copper pipe gauge adjusting projection margin 21 Vacuum pump adapter Required tools for installation work 1 Philip...

Page 4: ...ry if the location is not strong enough Carry out the specified installation works to prevent strong winds or earthquakes Improper installation may cause the unit to drop leading to accidents Before w...

Page 5: ...ling when necessary b Adjust the position of the unit and make sure that the gap with the ceiling is evenly spaced on all four sides of the unit and the base of the unit is 10 12 mm into the base of t...

Page 6: ...therwise it may cause water to leak Calibrate the levelness of the IDU using a spirit level or polyethylene tube filled with water The IDU is equipped with a built in drain pump and float switch Do no...

Page 7: ...ook Drainage pan hook Hook screw Phillips screwdriver Swing motor Foam at panel side Unit Ceiling Panel Panel bubble 1 Air outlet Air deflector Panel bubble 2 4 6 mm The plastic cover plate protruding...

Page 8: ...outdoor unit and the indoor unit may not exceed the allowable piping length In the case that the installation place is exposed to strong wind such as a seaside make sure the fan operating properly by...

Page 9: ...from becoming loose When the outlet of the water discharge pipe is higher than the pipe connection for water suction try to keep the water discharge pipe as vertical as possible and the water outlet c...

Page 10: ...nical surface of the connecting nut the refrigerant oil used must be compatible with the refrigerant of this model and screw it 3 to 4 turns with your hand to tighten it as shown in the Fig 3 9 When c...

Page 11: ...ge Refer to the following table to determine the tightening torque 1 Bend the pipe or drill a hole in the wall as needed The cross sectional area of the pipe bending deformation must not exceed 1 3 of...

Page 12: ...e or valve No power cable is attached to this equipment The user can select the power cable by reference to the stipulated power supply specifications No joint of wires is allowed Upon completion of w...

Page 13: ...ng issues before trial operation and the box for the confirmed items Perform the trial run only after the outdoor unit has been powered on for over 12 hours Check that all valves are opened before tri...

Page 14: ......

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