Hitachi RPIH-3.0HNAUB1Q, Operation Installation Maintenance Manual, Page: 19 / 24

13
●
Turn OFF the main power switch to the indoor
unit and the outdoor unit and wait for at least
10
minutes before electrical wiring work or a
periodical check is performed.
●
Check to ensure that the indoor fan and the
outdoor fan have stopped before electrical
wiring work or a periodical check is performed.
●
Protect the wires,drain pipe, electrical parts,
etc. from rats or other small animals.
If not protected, rats may gnaw at unprotected
parts and at the worst, a fire will occur.
●
Avoid any wire from contacting with
Refrigerant tube, edge of metal plate and
electrical part in the equipment, or otherwise
the wire may be damaged or even thereby
cause fire.
●
ELB with intermediate induction rate (with
shorter than 0.1 second or fewer) shall be
used, or otherwise electric shock or fire may
be caused.
●
Wire shall be fixed securely, since external
force imposed to the connecting terminal may
make it loose and thereby cause fire.
●
Do not use the power terminal strip used for
the air conditioner to sub-connect any power
cable, but use power branch box to sub-
connect power wire at indoor unit side instead,
and be sure to calculate wire capacity, or
otherwise too low capacity may cause fire.
●
The system shall not be started until all
inspections have been performed properly.
●
Wrap the accessory packing around the wires,
and plug the wiring connection hole with the
seal material to protect the product from any
condensate water or insects.
●
Secure the cable of the remote control switch
using the cord clamp inside the electrical box.
●
Tighten screws according to the following
torque.
M4: 1.0~1.3 N.m
M5: 2.0~2.4 N.m
M6: 4.0~5.0 N.m
M8: 9.0~11.0 N.m
M10: 18.0~23.0 N.m
Check the capacity of power source. The
system can't be started if the supply
voltage is excessively low.
7 . 1 .
Use cord clamps to fasten the wires in
electric box.
Seal the finished wiring connection with
sealing material (with cover board).
Upon completion of wiring connection, seal
the wire interface with sealing material to
keep condensate water and insects off.
Fig. 7.1 Wiring Connection
Wire Clamp
Remote Controller Wire
Communication Wire
L N
B A 2 1
TB2
PCN2
PCN6
PCN18
TB1
N
FS CN7 CN3 CN11 CN25 THM1 THM2 THM3 THM5
TP
EMULATOR
THU1
Wire Clamp
Power Supply Wire
●
Tightly secure the power source wire by cord
clamp inside the unit .
●
Use shielded twisted pair for the connection
of transmission wires between the outdoor
and indoor units, and the transmission wires
between the indoor units and wired controller.