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3.4. Electrical requirement
Always make the air conditioner power supply a special
branch circuit and provide a special switch and receptacle.
Do not extend the power cable.
Refer to local codes for acceptable cable type.
Cable
Cable size
Connection cable
14AWG
Max. Cable Length: Limit voltage drop to less than 2%. In-
crease cable gauge if voltage drop is 2% or more.
4. INSTALLATION WORK
Install the air conditioner as follows:
4.1. Selecting the installation location
Correct initial installation location is important because it is
diffi cult to move unit after it is installed.
Install the air conditioner in a location which can with-
stand a load of at least 3 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.
MODEL
AU7/9/12/18
Do not install the unit in the following areas:
• Area with high salt content, such as at the sea-
side.
It will deteriorate metal parts, causing the parts
to fail or the unit to leak water.
• Area fi 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 that generates substances that adversely
affect the equipment, such as sulfuric gas, chlo-
rine 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 fi bers or fl ammable
dust, or volatile infl ammables such as paint thin-
ner or gasoline.
If gas leaks and settles around the unit, it can
cause a fi re.
• Area where animals may urinate on the unit or
ammonia may be generated.
En-5
WARNING
Remarks
3 cable + Earth (Ground)
1Φ 208/230 V
WARNING
Withstandable weight
(Unit weight x 3*)
117 Lbs (53kg)
*In accordance with UL standards.
CAUTION
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 combus-
tible gas leakage.
Do not install the unit near a source of heat, steam,
or fl ammable gas.
Install the unit where drainage does not cause any
trouble.
Install the indoor unit, outdoor unit, power supply
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.
Use the "Insulation kit for high humidity" (option),
when the condition under the roof is over 80% in
humidity and over 30°C in temperature. Otherwise,
there is a risk of condensation on the ceiling.
Decide the mounting position with the customer as
follows:
(1) Install the indoor unit in a location having suffi cient strength
to support 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) The ceiling rear height as shown in the fi gure.
(5) Locate where the air can be distributed evenly throughout
the room by the unit.
(6) Locate where drainage can be extracted outdoors easily.
(7) Install the unit where noise and vibration is not amplifi ed.
4.2. Installation dimensions
Strong and durable ceiling
Obstruc
Floor
CAUTION
11 in.
(262 mm)
or more
40 in.
(1 m) or more
tion
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