-
182
-
(a)
Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
(b)
In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
(c)
Grounding terminals are provided in the control box.
Model
302
20
16
3.5
ø1.6 mm
ø1.6 mm
×
3
Power source
1phase
220-240V
50Hz
Power cable
thickness
(mm
2
)
Grounding wire
thickness
Max. over
current
(A)
Indoor-outdoor
wire thickness
×
number
Cable length
(m)
Power cable, indoor-outdoor connecting wires
●
Always perform grounding system installation work
with the power cord unplugged.
CAUTION
Always use an earth leakage circuit breaker designed for
inverter circuits to prevent a faulty operation.
Notes (1) The specifications shown in the above table are for units without heaters. For units with heaters, Please refer to the installation instructions or the
construction instructions of the indoor unit.
(2) Switchgear or circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country.
(3) The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in conduit and
a voltage drop is 2%. For an installation falling outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
L1
1
2
3
N
Outdoor unit
Circuit breaker
Earth leakage breaker
1
X Y Z
2/N 3
X Y Z
1
X Y Z
2/N 3
Indoor unit
Remote
controller
Master
Slave a
For twin
units
(d)
Plural Master / Slave setting
Set the plural address switches SW5-1 and SW5-2 on the indoor con-
trol PCB as shown in the table below.
Indoor unit
Master
Slave a
Plural address switch
SW5-1
OFF
OFF
SW5-2
OFF
ON
Master setting at time of
factory shipment
Z
Y
X
Indoor unit
Remote
controller
SW1
M
Remote
controller
SW1
S
Z
Y
X
Z
Y
X
Remote control signal line (with polarity) (Match up X , Y and
Z when making connections.)
(e)
Remote controller wiring and connection procedure
1) Master-slave settings when using multiple remote controllers
●
Up to 2 remote controllers can be connected for each indoor unit (or group).
a) There are two methods, one where the remote controller signal line (3-wire) for the slave remote controller is taken
from the indoor unit and the other where the signal lines are taken from the master remote controller.
Grounding terminal
⁄
It is stuck on control box cover.
⁄
Fasen cables so that terminal connections are
not subjected to external force.
Wiring diagram
Wiring clamp
Power source,signal line and ground terminal block
