Hitachi UTOPIA RASC Series Installation And Operation Manual page 37

ELECTRICAL WIRING

WARNING:
Check to ensure that screws for terminal block are tightly
tightened.

CAUTION:
Check to ensure that the indoor fan and the RASC have
−
stopped before electrical wiring work or periodical check
is performed.
Protect the wires, drain pipe, electrical parts, from rats or
−
other small animals. If not protected, rats may damage
unprotected parts, and at the worst, a fire will occur.
Wrap the accessory packing around the wires, and
−
plug the wiring connection hole with the seal material
to protect the product from any condensed water and
insects.
Tightly secure the wires with the cord clamp inside the
−
indoor unit.
Lead the wires through the knockout hole in the side
−
cover when using conduit.
13.2. ELECTRICAL WIRING CONNECTION FOR RASC UNITS
The electrical wiring connection for the RASC unit is as shown below:
RASC-3/5HVRNE
¡
Power
Earth Terminal
cables
RASC-10HRNE
¡
Earth Terminal
Clamp
Power cables
Power cables
L1 L2
N
AC230V
Power
Power
cables
Transmission
Clamp
cables
cables
L1 L2 L3
AC400V
Power
cables
Transmission
cables
Secure the cable of the remote control switch with the
−
cord clamp inside the electrical box.
Electrical wiring must comply with national and local
−
codes. Contact your local authority in regards to
standards, rules, regulations, etc.
Check that the ground wire is securely connected.
−
Connect a fuse of specified capacity.

DANGER:
Do not connect of adjust any wiring or connections unless
the main power switch is OFF.
Check that the earth wire is securely connected, tagged
and locked in accordance with national and local codes.

NOTE:
Check and test to ensure that if there is more than one
source of power supply, that all are turned OFF.
13.2.1. SETTING OF DIP SWITCHES FOR RASC UNIT
Quantity and location of DIP Switches
¡
The PCB in the RASC unit is operating with 5 types of DIP
Switches, 1 Slide Switch and 3 Push Switch. The location is
as follows:
1 2
DC5V
Transmission
cables

NOTE:
The mark " ▄ " indicates position of dips switches. Figures
show setting before shipment or after selection.

CAUTION:
Before setting dips switches, firstly turn off power source
and set the position of the dips switches. If the switches are
set without turning off the power source, the contents of the
N 1 2
setting are invalid.
DC5V
Transmission
cables
PMML0140A rev.1 - 07/2009
37