4 Before operation
User reference guide
4
FDXM25~60F3V1B(9)
Split system air conditioners
4P543324-1 – 2018.07
b
c
a
e
d
f
g
h
a
Indoor unit
b
Outdoor unit
c
User interface
d
Air inlet
e
Air outlet
f
Refrigerant piping and electric wiring
g
Drain pipe
h
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
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.
Refer to the operation manual of the user interface for information
about the display and the buttons of the user interface.
4
Before operation
WARNING
This unit contains electrical and hot parts.
WARNING
Before operating the unit, be sure the installation has been
carried out correctly by an installer.
CAUTION
It is not good for your health to expose your body to the air
flow for a long time.
CAUTION
To avoid oxygen deficiency, ventilate the room sufficiently
if equipment with burner is used together with the system.
CAUTION
Do NOT operate the system when using a room
fumigation-type insecticide. Chemicals could collect in the
unit, and endanger the health of people who are
hypersensitive to chemicals.
NOTICE
Be sure to turn on the power 6 hours before operation in
order to have power running to the crankcase heater and
to protect the compressor.
5
Operation
5.1
Operation range
For combination with R410A outdoor unit, refer to the following table:
Outdoor units
Cooling
Heating
RR71~125
–15~46°C DB
—
18~37°C DB
12~28°C WB
—
RQ71~125
–5~46°C DB
–9~21°C DB
–10~15°C WB
18~37°C DB
12~28°C WB
10~27°C DB
RXS25~60
–10~46°C DB
–15~24°C DB
–16~18°C WB
18~32°C DB
10~30°C DB
