En-2
2.3. For authorized service personnel only.
WARNING
For the air conditioner to operate satisfactorily, install it as outlined in this installation
manual.
Connect the indoor unit and outdoor unit or branch box with the air conditioner piping
and cables available from your local distributor. This installation manual describes the
correct connections using the installation set available from your local distributor.
Do not turn on the power until all installation work is complete.
CAUTION
This installation manual describes how to install the indoor unit only.
To install the outdoor unit or branch box, refer to the installation manual included with
the outdoor unit or branch box.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
2.4. Accessories
The following installation accessories are supplied. Use them as required.
Name and Shape
Q’ty
Name and Shape
Q’ty
Operating manual
1
Remote controller
holder
1
Installation manual
(This manual)
1
Cloth tape
1
Wall hook bracket
1
Tapping screw
(M4 × 25 mm)
5
Remote controller
1
Tapping screw
(M3 × 12 mm)
2
Battery
2
Air cleaning filter
2
Seal A
It is used when the diameter of
gas pipe is Ø12.70 or more.
It is necessary when using AS14.
1
The following items are necessary to install this air conditioner. (The items are not included
with the air conditioner and must be purchased separately.)
Name Q’ty
Name Q’ty
Connection pipe assembly
1
Wall cap
1
Connection cable (4-conductor)
1
Saddle
1 set
Wall pipe
1
Drain hose
1
Decorative tape
1
Tapping screws
1 set
Vinyl tape
1
Sealant
1
2.5. Optional parts
Refer to each installation manual for the method of installing optional parts.
Parts name
Model No.
Application
Wired remote controller *
UTY-RNN
¾
M
For air conditioner operation
Simple remote controller *
UTY-RSN
¾
M
For air conditioner operation
External connect kit *
UTY-XWZXZ5
For control input/output port
Communication kit
UTY-TWBXF
For the installation of optional parts
* Optional communication kit is necessary for the installation.
3. GENERAL SPECIFICATION
This installation manual brie
fl
y outlines where and how to install the air conditioning system. Please
read over the entire set of instructions for the indoor and outdoor units and make sure all accessory
parts listed are with the system before beginning.
3.1. Type of copper pipe and insulation material
CAUTION
Refer to the installation manual for the outdoor unit for description of allowable pipe length
and height difference.
Selecting pipe sizes
The diameters of the connection pipes according to the capacity of the indoor unit.
Refer to the following table for the proper diameters of the connection pipes between the
indoor unit and outdoor unit or branch box.
Capacity of indoor unit
Gas pipe size (thickness)
[mm]
Liquid pipe size (thickness)
[mm]
7, 9, 12
Ø 9.52(0.8)
Ø 6.35(0.8)
14
Ø 12.70(0.8)
Ø 6.35(0.8)
CAUTION
Install heat insulation around both the gas and liquid pipes. Failure to do so may
cause water leaks.
Use heat insulation with heat resistance above 120 °C. Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is
expected to exceed 70%, install heat insulation around the refrigerant piping. If the
expected humidity level is 70-80%, use heat insulation that is 15 mm or thicker and if
the expected humidity exceeds 80%, use heat insulation that is 20 mm or thicker.
If heat insulation is used that is not as thick as speci
fi
ed, condensation may form on the surface
of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m•K) or less 20 °C.
3.2. Additional materials required for installation
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire (See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
4. ELECTRICAL REQUIREMENT
The indoor unit is powered from the outdoor unit or branch box. Do not power indoor unit
from separate power source.
WARNING
Refer to local codes for acceptable cable type.
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