Installation guide
En-2
WARNING
Do not use the existing (for R22) piping and are nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and
cause failure, injury, etc. (Use the special R410A materials.)
When installing and relocating the air conditioner, do not mix gases other than
the specied refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause failure, injury, etc.
2.2. 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 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.
• Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
• 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, refer to the installation manual included with the outdoor unit.
• Be careful not to scratch the air conditioner when handling it.
2.3. Accessories
The following installation accessories are supplied. Use them as required.
Name and Shape
Q’ty
Name and Shape
Q’ty
Operating Manual
1
Filter holders
2
Installation Manual
(This manual)
1
Cloth tape
1
Remote controller
1
Tapping screw (Large)
5
Remote controller holder
1
Tapping screw (Small)
2
Air cleaning lter
1
Battery
2
Air cleaning lter
1
Wall hook bracket
1
The following items are necessary to install this air conditioner. (The items are not includ-
ed with the air conditioner and must be purchased separately.)
Additional materials
Connection pipe assembly Wall cap
Connection cable (4-conductor)
Saddle
Wall pipe Drain hose
Decorative tape Tapping screws
Vinyl tape Putty
2.4. Optional parts
Refer to each installation manual for the method of installing optional parts.
Parts name Model No. Application
Wired remote controller (*1) UTY-RNR
Z
For air conditioner operation
(2-wired type)
UTY-RLR
External input and output PCB UTY-XCSXZ2 For control input/output port
Communication kit UTY-TWRXZ2 For the installation of optional parts
WLAN adapter UTY-TFSXZ2 For wireless LAN control
*1: Optional Communication kit (UTY-TWRXZ2) is necessary for installation.
3. GENERAL SPECIFICATION
This installation manual briefly 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.
Gas pipe size (thickness) [mm] Liquid pipe size (thickness) [mm]
Ø
9.52 (3/8 in.)
Ø
6.35 (1/4 in.)
CAUTION
• Wrap heat insulation around both gas pipe and liquid pipe.
No heat-insulation work or incorrect heat-insulation work may cause water leaks.
• In a reverse cycle model, use heat insulation with heat resistance above 120 °C.
• If expected humidity of the installation location of refrigerant pipes is higher than
70 %, wrap the heat insulation around the refrigerant pipes.
If the expected humidity is between 70 % and 80 %, use heat insulation that has
a thickness of 15 mm or more.
If the expected humidity is higher than 80 %, use heat insulation that has a thickness
of 20 mm or more.
• The use of thinner heat insulation than specied above, may cause a condensation
on the surface of the insulation.
• Use heat insulation with thermal conductivity of 0.045 W/(
m•K
) or less, at 20
°C
.
4. ELECTRICAL REQUIREMENT
The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
WARNING
Standard for electrical wiring and equipment differs in each country or region. Before you
start electrical working, conrm related regulations, codes, or standards.
Cable
Conductor size [
mm
2
] Type
Remarks
Connection cable
1.5 Type 60245 IEC 57
3 cable + Earth (Ground),
1 Ø 230 V
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
5. SELECTING THE MOUNTING POSITION
Decide the mounting position with the customer as follows:
(1) Install the indoor unit level on a strong wall which is not subject to vibration.
(2) The inlet and outlet ports should not be obstructed: the air should be able to blow all
over the room.
(3) Install the unit a dedicated electrical branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown in “6.1. Installation
dimensions”. Also install the unit where the lter can be removed.
Correct initial installation location is important because it is difcult to move the unit after it
is installed.
WARNING
Install the indoor unit where is capable to support the weight of the unit. Secure the
unit rmly so that the unit does not topple or fall.
CAUTION
Do not install the unit in the following areas:
- Area with high salt content, such as at the seaside. It will deteriorate metal parts, caus-
ing the parts to fail or the unit to leak water.
- Area lled with mineral oil or containing a large amount of splashed oil or steam, such
as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit to leak
water.
- Area where is close to heat sources.
- Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to
corrode, which can cause refrigerant leakage.
- Area that can cause combustible gas to leak, contains suspended carbon bers or
ammable dust, or volatile in ammables such as paint thinner or gasoline.
• If gas leaks and settles around the unit, it can cause a re.
• Area where animals may urinate on the unit or ammonia may be generated.
• Do not use the unit for special purposes, such as storing food, raising animals, grow-
ing plants, or preserving precision devices or art objects. It can degrade the quality of
the preserved or stored objects.
• Install the unit where drainage does not cause any trouble.
• Install the indoor unit, outdoor unit, power supply cable, transmission cable, and re-
mote control cable at least 1 m away from a television or radio receivers. The purpose
of this is to prevent TV reception interference or radio noise.
(Even if they are installed more than 1 m apart, you could still receive noise under
some signal conditions.)
• If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
• Install the indoor unit on the wall where the height from the oor is more than 1.8 m.
9387603033_IM.indd 2 21/11/2018 15:03:18