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• Use the specifi ed wires for wiring connect the terminals
securely fi x.
To prevent external forces applied to the terminals from
affecting the terminals.
• Conform to the regulations of the local electric company
when wiring the power supply.
Inappropriate grounding may cause electric shock.
• Do not install the air conditioner in a location subject to a
risk of exposure to a combustible gas.
If a combustible gas leaks, and stays around the unit, a fi re may
occur.
This Air Conditioner has adopted a refrigerant HFC (R32)
which does not destroy the ozone layer.
• As the R32 refrigerant is easily affected by impurities such
as moisture, oxidized fi lm, oil, etc., due to the high pressure,
be careful not to allow the moisture, dirt, existing refrigerant,
refrigerating machine oil, etc., to get mixed up in the refrigeration
cycle during the installation work.
• A special tool for the R32 or R410A refrigerant is required for
installation.
• Use a new and clean piping materials for the connecting pipe
so that moisture and dirt are not mixed together during the
installation work.
EN-9
CAUTION
5
2
SELECTION OF INSTALLATION PLACE
Do not install the air conditioner at place where combustible gas may leak.
If gas leaks is collected at surrounding the unit, the production of fi re may be caused.
Cautions for Installation at a Place with the Quiet Background Sound
As the Flow Selector unit incorporates the Pulse motor valve, the refrigerant sound or the operating sound of
the Pulse motor valve such as "Bushuu..." generates when exchanging between cooling and heating mode and
during defrost operation. Therefore, avoid installing the unit at a place with quiet background sound as follows.
(1) Rooms with quiet background sound such as bedroom, hospital, or room in a hotel.
(2) Rooms which have no ceiling and a fabric does not block the residence space from the Flow Selector
unit.
(3) Rooms which have opening port at the ceiling.
10 m or more
Flow Selector unit
When installing the unit at the above places, separate the unit from the indoor unit (more than 10 m) and install
the unit at a place so that sound does not transmit into the room such as in the corridor ceiling.
And take sound proof measure, such as covering around the Flow Selector unit with the sound proofi ng
materials.
Upon customer's approval, install the air conditioner at a place where satisfi es the following conditions.
• Place where Flow Selector unit can be installed horizontally.
• Place which can reserve a service space for safe maintenance or check.
Apply electric insulation between metal section of the building and metal section of the air conditioner in
conformance with the Local Regulation.
Avoid the following places.
• Salty place (seaside area) or place with much gas sulfi de (hot spring area)
(If selecting such a place, a special maintenance is required.)
• Place where oil (including machine oil), steam, oil smoke or corrosive gas generates.
• Place where a device generating high frequency (inverter, non-utility generator, medical apparatus, or
communication equipment) is set. (A bad infl uence may generate by malfunction of the air conditioner, control
trouble, or noise for such equipment.)
CAUTION
Indoor unit
EN-10
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