5
Electrical characteristics
Model
Hz
Volts
Voltage range
FH(Y)B35~125
50
230
min.198-max.264
NOTE
For details, refer to "Electrical data".
Specifications for field supplied wires
Connection
Wire
Size
between indoor units
H05VV-U4G
2mm
2
unit-remote controller
Shielded wire (2)
0.75-1.25mm
2
NOTE
For details, refer to the chapter "Wiring example".
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. 500m.
WIRING EXAMPLE AND HOW TO SET THE
REMOTE CONTROLLER
How to connect wiring
From the outside of the unit
Remove the switch box cover as shown in figure 11b, and make
the connections.
From the inside of the unit
Remove the small bottom plate and the interchangeable plate (in
case of rear suction) or the air filter holding plate (in case of
bottom suction). Lower the switch box as shown in figure 11c.
Put the wires through the wiring ports of the switch box cover
before connecting them.
1
Small bottom plate
2
Air filter holding plate
3
Switch box
4
Interchangeable plate
5
Square hole (covered by the switch box cover)
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 50mm 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 worse
case, electric shock or fire.
7 Ground the shield of the shield wire of the remote controller
cord to the earth screw inside the switch box.
WIRING EXAMPLE
•
Fit the power supply wiring of each system with a switch and
fuse as shown in figure 14.
1
Power supply
2
Main switch
3
Fuse
4
Outdoor unit
5
Indoor unit
6
Remote controller (optional accessory)
COMPLETE SYSTEM EXAMPLE (3 systems)
When using 1 remote controller for 1 indoor unit (normal
operation) (see figure 14)
For group control (see figure 16)
Use with 2 remote controllers (see figure 15)
NOTE
•
It is not necessary to designate an indoor unit address when
using group control. The address is automatically set when
the power is activated.
PRECAUTIONS
1. A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.
2. For a group control remote controller, choose the remote
controller that suits the indoor unit which has the most
functions.
3. Do not ground the equipment on gas pipes, water pipes,
lightning rods or crossground with telephones. Improper
grounding could result in electric shock.
