Hitachi RCD-0.8FSN3 Installation And Operation Manual page 35

ELECTRICAL WIRING
17.2.3
D A N G E R
• Ensure that the wiring terminals are tightened securely with the
• Fix the cables securely. External forces from the cables applied
•
an external force to the terminal connections of the wirings. If
The electrical wiring connection for the indoor unit is shown
in the item
details of the intermediate connection between the indoor unit
and the air panel.
1 The connections at the terminal block for the indoor unit
be combined before wiring work. The tightening torque for
terminals is shown in the table below.
Screw size
TB1 M4
TB2 M3.5
Terminal board for power source
cable TB1 (black)
R/L1 S/N -
N O T E
Connect it with
crimping terminal
Stranded wire
2 Connect the cable for the optional remote control switch
3 Connect the power supply and the earth wires to the
4 Connect the wires between the indoor unit and the outdoor
5 Tie the wires together with the cord clamp inside the
27 PMML0416A rev.0 - 12/2015 - P5415720
for
Tightening torque for
terminals
1.0 - 1.3 (Nm)
1.2 (Nm)
Terminal board for control cable
TB2 (white)
A B 1 2
Connect it direct
as shown below
Single wire
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 S –
L1 N
1~ 230V 50Hz
5V
Incorrect wiring
R S –
L1 N
1~ 230V 50Hz
5V
Reconnect wirings correctly
C A U T I O N
•
•
•
•
(B)
A B 1 2
PCB
DSW7
A B 1 2
ON
OFF
1 2
Set Pin 1 at
ON side
(C)
Screw
Screw
(A)