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Electrical Requirement; Optional Parts; Installation Work; Selecting An Installation Location - Fujitsu AUXG-KRLB Series Installation Manual

Cassette type
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2. 4. Electrical requirement

The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
Standard for electrical wiring and equipment differs in each country or region. Before you
start electrical working, confi rm related regulations, codes, or standards.
Conductor size
Connection cable
1.5 (MIN.)
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage
drop is 2% or more.
Conductor size
Remote controller
0.33 to 1.25
(2-wire type)
Remote controller
(3-wire type)

2. 5. Optional parts

Parts name
Model No.
Wired remote controller
W-LAN interface
IR receiver unit
Human sensor
Wide panel
Panel spacer
Air outlet shutter plate
Insulation kit for High
Fresh air intake kit
External input and output
External input and output
PCB box
External connect kit
3Wire+Earth (Ground),
Type 60245 IEC57
Sheathed PVC
Non-polar 2 wire, twisted
Sheathed PVC
Polar 3 wire
For air conditioner operation
(2-wired type)
For air conditioner operation
(3-wired type)
For wireless LAN control
For air conditioner operation
To prevent waste of electricity,
this function controls the tem-
perature setting when no one is
occupying the room.
Wide panel hides the gap
between the ceiling hole and the
Cassette grille.
Installation in a space of 56 mm
or greater is possible by using
panel spacer when the height
behind the ceiling is low.
Install the plate at outlet when
carrying out 3-way direction
Install when the condition under
the roof is over 80% in humidity
and over 30°C in temperature.
To take fresh air
For connecting external devices
For installing the External input
and output PCB
For control output port


• Do not turn on the power until all installation work is complete.
• Carrying and installation of the unit should be performed by a suffi cient number of
people and with suffi cient equipment that is adequate for the weight of the unit.
• Performing such work with an insuffi cient number of people or with inadequate equip-
ment could result in dropping of the unit or personal injury.
For installation details, refer to the technical data.

3. 1. Selecting an installation location

Decide the mounting position together with the customer as follows.
• Select installation locations that can properly support the weight of the indoor 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.
• Install the units securely so that they do not topple or fall.
• Do not install the indoor unit in the following areas:
– Area with high salt content, such as at the seaside.
It will deteriorate metal parts, causing the parts to fall 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 fall 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 fi bers or
fl ammable dust, or volatile infl ammables such as paint thinner 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.
• 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.
• Do not install where there is the danger of combustible 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, transmission cable, and
remote 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.)
• Install the unit where ambient temperature does not reach 60°C or more.
Take a measure such as ventilation for an environment in which heat is retained.
• 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 place where the height from the fl oor is more than 1.8 m.
• 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.
(1) Locate where the air can be distributed evenly throughout the room by the 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) Install the unit where connection to the outdoor unit is easy.
(5) Install the unit where the connection pipe can be easily installed.
(6) Install the unit where the drain pipe can be easily installed.
(7) Install the unit where noise and vibrations are not amplifi ed.
(8) Take servicing, etc., into consideration and leave the spaces. Also install the unit where
the fi lter can be removed.
(9) Do not install the unit where it will be exposed to direct sunlight.
Correct initial installation location is important because it is diffi cult to move unit after it is



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