4 Before operation
User reference guide
4
FNA25~60A2VEB(9)
Split system air conditioners
4P543324-3 – 2018.08
a Indoor unit
b Outdoor unit
c User interface
d Refrigerant piping and electric wiring
e Drain pipe
f Earth wire to ground outdoor unit to prevent electric
shocks.
CAUTION
Do NOT insert fingers, rods or other objects into the air
inlet or outlet. Do NOT remove the fan guard. When the
fan is rotating at high speed, it will cause injury.
CAUTION
▪ NEVER touch the internal parts of the controller.
▪ Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
NOTICE
Do NOT wipe the controller operation panel with benzine,
thinner, chemical dust cloth, etc. The panel may get
discoloured or the coating peeled off. If it is heavily dirty,
soak a cloth in water-diluted neutral detergent, squeeze it
well and wipe the panel clean. Wipe it with another dry
cloth.
NOTICE
NEVER press the button of the user interface with a hard,
pointed object. The user interface may be damaged.
NOTICE
NEVER pull or twist the electric wire of the user interface. It
may cause the unit to malfunction.
3.2 Combining units and options
3.2.1 Possible options for the indoor unit
Make sure you have the following mandatory options:
▪ User interface: Wired or wireless
Select a user interface in accordance with the customer's request.
Refer to the table below to select a suitable user interface.
User interface
Wired user interface BRC1D52/BRC1D61/
BRC1E51A/BRC1E53A7/
BRC1E53B7/BRC1E53C7/
BRC1H519
Wireless user interface BRC4C65
3.3 User interface
CAUTION
▪ NEVER touch the internal parts of the controller.
▪ Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
This operation manual will give a non-exhaustive overview of the
main functions of the system.
For more information about the user interface, see the operation
manual of the installed user interface.
3.4 Information related to units using
R32 refrigerant
WARNING
Never use a flammable spray such as hair spray, lacquer
or paint near the unit. It may cause a fire, or, in case of
R32 refrigerant, misdetection by the refrigerant leakage
sensor.
1
CAUTION
Do NOT turn off the breaker, unless you smell something
burning, or during a short repair period, inspection, or
cleaning of the unit. Otherwise, refrigerant leakage
CANNOT be detected.
1
CAUTION
Do NOT install or use in highly airtight spaces, e.g.
soundproof chambers or rooms with sealed doors.
1
CAUTION
This unit is equipped with electrically powered safety
measures, such as a refrigerant leak detector. In order to
be effective, the unit must be electrically powered at all
times after installation, except for short service periods.
1
CAUTION
Do NOT install or use in places filled with smoke, gas,
chemicals etc. Sensors inside the indoor unit may detect
these substances, and display a refrigerant leak
abnormality.
1
4 Before operation
WARNING
Ask your dealer for improvement, repair, and maintenance.
Incomplete improvement, repair, and maintenance may
result in water leakage, electric shock and fire.
WARNING
Ask your dealer to move and reinstall the air conditioner.
Incomplete installation may result in a water leakage,
electric shock, and fire.
(1)
Only for units using R32 refrigerant. Refer to the outdoor unit specifications for the type of refrigerant to be used.
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