Installation manual
3
FDY(P)125~2 FDQ125B7V3B
Split System air conditioners
4PW10621-1C
V
ACUUM
DRYING
OF
INSTALLATION
Refer to the installation manual of the outdoor unit.
D
RAIN
PIPING
WORK
D
RAIN
CHECK
Make sure that the drain hose is firmly connected. Put some water
into the drain pan to check if the water flows smoothly.
F
IELD
WIRING
■
Use copper wire only.
■
For electric wiring work, refer also to
"Internal wiring - parts
table" on page 5
.
■
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
■
Refer to the installation manual attached to the outdoor unit for
the size of power supply electric wire connected to the outdoor
unit, the capacity of the circuit breaker and switch, and wiring
instructions.
■
Refer to table below for specifications of field wire.
Methods of wiring units and connecting remote
controller cords
(Refer to
figure 6
)
■
Wiring the units (Power supply wiring).
■
Connect the interconnection wiring (from outdoor to indoor) to
the 1-2-3 terminal (1) using a separate power supply wire to
connect to power supply of the indoor unit fan motor to the L-N
terminal.
■
Remote controller code.
Connect the cords to the remote controller terminal (P1, P2) (No
Polarity) (2).
Precautions
■
Do not clamp remote controller cords together with the other
wiring. Doing so may cause malfunction.
■
Remote controller cords and wires connecting the units should
be located at least 50 mm from other electric wires. Not following
this guideline may result in malfunction due to electrical noise.
Observe the notes mentioned below when wiring to the power supply
terminal board.
■
Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
■
When connecting wires of the same gauge, connect them
according to the figure below.
Wiring example
Pair type (Refer to
figure 7
)
Remote controller controls 1 indoor unit (standard system).
Control by two remote controllers (Refer to
figure 8
)
Two remote controllers control 1 indoor unit.
Group control (Refer to
figure 9
)
Remote controller controls up to 16 indoor units.
(All indoor units operate according to the remote controller.)
■
The drain hose must slope downward to the outdoor
side.
■
Never put the end of the drain into water.
■
A trap to prevent bad odours is allowed.
■
If you extend the drain hose always insulate it up to the
outdoor side with polyethylene foam insulation material
(field supplied).
■
To ensure a downward slope of minimum 1:100, install
hanging bars every 1 to 1.5 m.
■
If unifying multiple drain pipes, install pipes shown in
the figure above.
All field wiring and components must be installed by a
licensed electrician and must comply with relevant local
and national regulations.
The field wiring must be carried out in accordance with the
wiring diagrams and the instructions given below.
Be sure to use a dedicated power circuit.
Never use a power supply shared by another appliance.
Size (mm
2
)
Length
Interconnection wire
H05VV-U4G (Note)
1
—
Unit remote controller
Sheathed wire (2 wires)
0.75~1.25
Max. 500 m
Power supply indoor fan
Must comply with relevant local and national regulations
The table above presents the specifications of field wiring
to be applied in case of protected pipes are used. Use
HO5RN-F in case of no protection.
≥
100
1
Main power supply
2
Main switch
3
Fuse
4
Outdoor unit
5
Indoor unit
6
Remote controller
7
Remote controller (Optional accessories)
NOTE
1.
All transmission wiring except for the remote
controller wires must match the terminal symbol.
2.
Use shield wire in transmission wiring. Ground the
shield of the shield wire to “
”, at the grounding
screw of the remote controller cord grounding
terminal inside the control box.
3.
For group control remote controller, choose the
remote controller that suits the indoor unit which
has the most functions (as attached swing flap).
