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Control box and connecting position of wiring
- Remove all of the screws at side panel and remove the panel by
pulling it forward.
- Connect communication cables between outdoor unit and indoor
units through the terminal block.
- When the central control system is connected to the outdoor unit, a
dedicated PCB must be connected between them.
- When connecting communication cable between outdoor unit and in-
door units with shielded cable, connect the shield ground to the earth
screw.
!
WARNING
The temperature sensor for outdoor air should not be exposed to
direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
Indoor communication PCB
Main PCB
Terminal block
(Take care of the phase
Sequence of 1-phase
2-wire power system)
※Pictures may differ depending on the model.
Side panel
(Inside the control box)
6 HP
Communication and Power Cables
Communication cable
- Types : shielding cable
2
- Cross section : 1.0~1.5mm
(1.55x10
- Maximum allowable temperature: 140°F
- Maximum allowable cable length: under 1,000m(3,281ft)
Remote control cable
- Types : 3-core cable
Central control cable
Product type
Cable type
2-core cable
ACP
(Shielding cable)
2-core cable
AC Smart
(Shielding cable)
4-core cable
AC Ez
(Shielding cable)
Separation of communication and power cables
- If communication and power cables are run alongside each other then
there is a strong likelihood of operational faults developing due to in-
terference in the signal wiring caused by electrostatic and electro-
magnetic coupling.
The tables below indicates our recommendation as to appropriate
spacing of communication and power cables where these are to be
run side by side
Current capacity of power cable
10A
50A
100V or more
100A
Exceed 100A
!
NOTE
• The figures are based on assumed length of parallel cabling up
to 100m(328ft). For length in excess of 100m(328ft) the figures
will have to be recalculated in direct proportion to the additional
length of cable involved.
• If the power supply waveform continues to exhibit some distor-
tion the recommended spacing in the table should be increased.
- If the cable are laid inside conduits then the following point
must also be taken into account when grouping various cable
together for introduction into the conduits
- Power cable(including power supply to air conditioner) and
communication cables must not be laid inside the same
- In the same way, when grouping the power wires and com-
munication cables should not be bunched together.
!
CAUTION
If apparatus is not properly earthed then there is always a risk of
electric shocks, the earthing of the apparatus must be carried out by
a qualified person.
23
-3
-3
2
~2.32x10
in
)
Diameter
2
1.0~1.5mm
-3
-3
2
(1.55x10
~2.32x10
in
)
2
1.0~1.5mm
-3
-3
2
(1.55x10
~2.32x10
in
)
2
1.0~1.5mm
-3
-3
2
(1.55x10
~2.32x10
in
)
Spacing
300mm(11-13/16 inch)
500mm(19-11/16 inch)
1,000mm(39-3/8 inch)
1,500mm(59-1/16 inch)
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