FDYMP71~125L7V1
Split System air conditioners
4PW14036-1B
Installation and operation manual
4
E
LECTRIC
WIRING
WORK
General instructions
■
All field supplied parts and materials and electric works must
conform to local codes.
■
Use copper wire only.
■
Follow the "Wiring diagram" attached to the switch box cover to
wire the outdoor unit, indoor units and the remote controller. For
details on hooking up the remote controller, refer to the
"Installation manual of the remote controller".
■
All wiring must be performed by an authorized electrician.
■
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
Specifications for field wire
Use H07RN-F as wiring between indoor units in case of no
protection.
Allowable length of transmission wiring between the indoor unit and
the remote controller is max. 500 m.
W
IRING
EXAMPLE
AND
HOW
TO
SET
THE
REMOTE
CONTROLLER
How to connect wiring
Remove the switch box cover as shown in
figure 15
, and make the
connections.
Precautions
1.
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.
2.
Do not connect wires of different gauge to the same grounding
terminal. Looseness in the connection may deteriorate the
protection.
3.
Remote controller cords and wires connecting the units should be
located at least 50 mm away from power supply wiring. Not following
this guideline may result in malfunction due to electrical noise.
4.
For the remote controller wiring, refer to the "Installation manual of
the remote controller" supplied with the remote controller.
5.
Never connect the power supply wiring to the terminal board for
transmission wiring. This mistake could damage the entire system.
6.
Use only specified wires and tightly connect wires to the terminals.
Be careful that wires do not place external stress on the terminals.
Keep wiring in neat order so that they do not obstruct other
equipment such as popping open the switch box cover. Make sure
the cover closes tight. Incomplete connections could result in
overheating, and in the worst case, electric shock or fire.
W
IRING
EXAMPLE
■
Fit the power supply wiring of each system with a switch and
fuse as shown in
figure 7
,
9
and
10
.
Complete system example (3 systems)
When using 1 remote controller for 1 indoor unit. (Normal
operation)
(See figure 10)
For group control
(See figure 7)
For group control, cut the jumper indicated as “master/slave” on the
PCB of the “slave” indoor units (=slave PCB). Do not cut the jumper
on the PCB of the indoor unit to which the remote controller is
connected (=master PCB).
Use with 2 remote controllers
(See figure 9)
Connection
Wire
Size
Between indoor units
H05VV-U4G
Local codes
Unit-Remote controller
Sheathed wire (2)
0.75-1.25 mm
2
NOTE
For details, refer to the chapter
"Wiring example" on
page 4
.
1
Switch box
2
Switch box cover
3
Power supply wiring port
4
Transmission wiring port
5
Wiring diagram
6
Wiring clamp
7
Remote controller wiring
8
Terminal for remote controller wiring
9
Power supply wiring
10
Terminal for power supply wiring
11
Earth screw
NOTE
The customer has the ability to select the remote
controller thermistor.
1
Power supply
2
Main switch
3
Fuse
4
Outdoor unit
5
Indoor unit (M=master, S=slave)
6
Remote controller (optional accessory)
Master
Slave
NOTE
It is not necessary to designate an indoor unit address
when using group control. The address is auto-
matically set when the power is activated.
