17.2.3
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D A N G E R
•
Ensure that the wiring terminals are tightened securely with the
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Fix the cables securely. External forces from the cables applied
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•
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an external force to the terminal connections of the wirings. If
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The electrical wiring connection for the indoor unit is shown
in the item
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for
details of the intermediate connection between the indoor unit
and the air panel.
1
The connections at the terminal block for the indoor unit
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be combined before wiring work. The tightening torque for
terminals is shown in the table below.
Screw size
Tightening torque for
terminals
TB1
M4
1.0 - 1.3 (Nm)
TB2
M3.5
1.2 (Nm)
Terminal board for power source
cable TB1 (black)
Terminal board for control cable
TB2 (white)
-
S/N
R/L1
A
B
1
2
N O T E
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Stranded wire
Single wire
Connect it direct
as shown below
Connect it with
crimping terminal
2
Connect the cable for the optional remote control switch
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3
Connect the power supply and the earth wires to the
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4
Connect the wires between the indoor unit and the outdoor
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5
Tie the wires together with the cord clamp inside the
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6
Perform wiring work for the indoor unit according to the
electrical wiring diagram and the technical documentation of
the outdoor unit.
7
In case that power source is applied to control line. If the
power source is applied to the control line (Terminal 1 and 2
of TB2) by mistake, the fuse on the PCB for the control line
will blow out. In this case, take the following measure.
a.
Reconnect the wirings correctly.
b.
Set pin 1 of DSW7 (on PCB) to ON side.
c.
Then PCB recovers from the fuse blowing out. However,
if the power source is applied to the control line again,
PCB will break and not be able to recover.
R
L1
S
N
R
L1
S
N
1~ 230V 50Hz
5V
A
B
1
2
–
5V
A
B
1
2
–
ON
OFF
DSW7
PCB
1 2
1~ 230V 50Hz
Set Pin 1 at
ON side
Reconnect wirings correctly
Incorrect wiring
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(A)
(B)
(C)
Screw
Screw
ENGLISH
ELECTRICAL WIRING
PMML0416A rev.0 - 12/2015 - P5415720
27
