Hitachi RAS-8FSXN - Page 91

4 Tightly clamp the wires using the cord clamp inside the electrical box.
5 Fix the electrical box cover after wiring work.
A
CN
4
CN
3
CN
2
CN
1
PCN
1
PCB1
TB2
TB1
L1 L2
N
B
C C
D E F
A Terminal board for operating line
B Terminal board for power supply
C Cord clamp
D Operating line connection
E Earth wire
F Power supply line connection
¿ Field minimun wire sizes
1 Perform the electrical wiring work for the CH units. Determine the cable size according to the table below.
2 Pay
attention to the marks on the terminal board when connecting wires for CH unit and Indoor unit / Outdoor unit. Refer
to “Example of Electrical Wiring” for the wiring connection on the next page.
Model Supply voltage
Maximum
current (A)
Power source cable size Transmitting cable size
Earth wire
size (mm
2
)
EN60 335-1
(mm
2
)
(1)
MLFC (mm
2
)
(2)
EN60 335-1
(mm
2
)
(1)
MLFC (mm
2
)
(2)
CH-6.0N1
1~ 220-240V/1Ø/50Hz 1 0.75 0.5 0.75 0.5 2.0
CH-10.0N1
N O T E
• Follow local codes and regulations when selecting field wires.
• The
wire
sizes marked with
1
in the above table are selected at the maximum current of the unit according to
the European Standard, EN60 335-1. Use the wires which are not lighter than the ordinary tough rubber sheathed
flexible cord (code designation H05RN-F) or ordinary polychloroprene sheathed flexible cord (code designation
H05RN-F).
• The wire sizes marked with
2
in the above table are selected at the maximum current of the unit according to
the wire, MLFC (Flame Retardant Polyflex Wire) manufactured by Hitachi Cable Ltd., Japan.
• Use a shielded cable for the transmitting circuit and connect it to ground.
4 Electrical wiring
84
SMGB0065 rev. 1 - 12/2010