En-3
Other optional parts
Description
Model
Application
IR receiver unit
UTY-TRHX
For the wireless remote controller.
Drain pump unit
UTZ-PU1NBA
Remote sensor
UTY-XSZX
Room temperature sensor
External connect kit
UTY-XWZXZC
For output function
(Output terminal / CNB01)
UTY-XWZXZB
For control input function
(Apply voltage terminal / CNA01)
UTY-XWZXZD
For control input function
(Dry contact terminal / CNA02)
UTY-XWZXZ7
For forced thermostat off function
(Apply voltage terminal / CNA03)
UTY-XWZXZE
For forced thermostat off function
(Dry contact terminal / CNA04)
Wireless LAN
adapter
UTY-TFSXZ*
For wireless LAN control.
MODBUS® convertor UTY-VMSX
For connecting a single indoor unit
system to the Modbus® network.
External power sup-
ply unit
UTZ-GXXA
Supply power to the indoor unit PCB
when the indoor unit is turned off to
prevent errors.
When installing, please refer to the installation manual of each optional part.
2.5. About unit of the length
This product is manufactured to metric units and tolerances. United States customary
units are provided for reference only.
In cases where exact dimensions and tolerances are required, always refer to metric
units.
3. INSTALLATION WORK
3.1. Selecting an installation location
Correct initial installation location is important because it is difficult to move unit after it is
installed.
WARNING
Select installation locations that can properly support the weight of the indoor. Install the
units securely so that they do 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, causing the parts to fail or the unit to leak water.
• Area filled 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 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 fibers or
flammable dust, or volatile flammables such as paint thinner or gasoline.
If gas leaks and settles around the unit, it can cause a fire.
• 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, growing
plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
Do not install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or flammable gas.
Install the unit where drainage does not cause any trouble.
Install the indoor unit, power supply cable, transmission cable, and remote controller
cable at least 40 in (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 40 in (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.
Decide the mounting position with the customer as follows:
(1) Install the indoor unit on a place having a sufficient strength so that it withstands
against the weight of the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(3) Leave the space required to service the air conditioner.
(4) A place from where the air can be distributed evenly throughout the room by the unit.
(5) Install the unit where connection to the outdoor unit (or RB unit) is easy.
(6) Install the unit where the connection pipe can be easily installed.
(7) Install the unit where the drain pipe can be easily installed.
(8) Install the unit where noise and vibrations are not amplified.
(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
(10) Providing as much space as possible between the indoor unit and the ceiling will
make work much easier.
(11) If installing in a place where its humidity exceeds 80%, use heat insulation to prevent
condensation.
3.2. Installation dimensions
Provide the space around the unit as
shown in the following figure.
*1: 16 in (400 mm) or more when drain
from drain pipe.
• Provide a service access for inspec-
tion purposes.
• Do not place any wiring or illumina-
tion in the service space, as they will
impede service.
• When an air filter is installed on the air
inlet, provide enough service space to
replace the filter.
Unit: in (mm)
16 (400) or
more
6 (150) or
more (*1)
[Top view]
Unit: in (mm)
Air
Air
Service access
Indoor unit
12 (300) or more
20 (500)
or more
20 (500)
or more
4 (100)
[Top view]
Unit: in (mm)
Air
Air
Service space
Indoor unit
12 (300) or more
62 (1,550) or more
20 (500)
or more
4 (100)
3.3. Installing the unit
WARNING
Install the air conditioner in a location which can withstand a load of at least 5 times the
weight of the main unit and which will not amplify sound or vibration. If the installation
location is not strong enough, the indoor unit may fall and cause injuries.
If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
3.3.1. Installing the hangers
Hanging bolt installation diagram.
[Top side]
Unit: in (mm)
29-1/8 (740)
18-3/4 (477)
Air
Air
44-1
1/16 (1,135)
46-5/16 (1,177)
[Right side]
Unit: in (mm)
10-5/8 (270)
Air
Air
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