Wiring work
Connecting a power cable and communication cable
f
Disconnect the power supply before the wiring work.
f
The power cable and communication cable between indoor units should be within 10 % of the maximum allowable
length of the cable or voltage drop.
f
Install the circuit breaker(ELCB, MCCB, ELB) that can cover the number of connected indoor units.
f
Connect the F3 and F4 (the wire connected with COM2:CN33) of the indoor unit to the communication cable of the wired
remote controller.
f
Connect all the wires firmly by using a correct tool and tighten them by applying correct torque so that the cables can
withstand external force. Arrange the cables correctly to prevent the cover or other parts from loosening. If the cable is
connected loosely, overheat, electric shock or fire may occur.
Torque (N·m)
M4
1.2~1.8
f
Install the power and communication cable in a protection tube to protect them from water or external shock.
f
Connect the power cable to ELCB or MCCB and ELB.
f
Between the power cable and communication cable, 50 mm or more space should be maintained.
Indoor unit 1
Indoor unit 2
Indoor unit 3
Outdoor unit
Wired remote
controller
or
MCCB +
ELB
ELCB
*Must be installed
(COM2:CN33)
t
The circuit diagram on the cables as shown above represents only outline, so it does not describe detailed
instruction on the actual installation work.
t
Basically, power supply for an indoor unit is separated from power supply for an outdoor unit.
t
The communication cable should not branch due to possible communication error.
t
The power cable for terminal block should not branch from 1 indoor unit to 2 indoor units.
t
When peeling off outer sheath of the power cable, be careful not to damage the inner sheath of the cable by
using a correct tool.
t
More than 20 mm of power cable or communication cable of the indoor unit should be inside the electric box.
t
The installation of communication cable should be separated from power cable or other communication cables.
t
The connection cables between indoor units and outdoor units should not be too tight.
CAUTION
ENGLISH-15
02
INST
ALLA
TION
Summary of Contents for AM140RNPDKH Series
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