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12.2.4 Connect the Cable to the Tank Unit
WARNING
This section is for authorized and licensed electrician only. Work behind the Control Board Cover
⑤
secured by screws must only be carried out
under supervision of qualified contractor, installation engineer or service person.
CAUTION
Please take extra precaution when open the control board cover
⑤
and control board
⑥
for unit installation
and servicing. Failure to do so may cause injury.
12.2.4.1 Fixing of Power Supply Cable and Connecting Cable
1. Connecting cable between Tank Unit and Outdoor Unit shall be approved polychloroprene sheathed flexible cord,
type designation 60245 IEC 57 or heavier cord. See below table for cable size requirement.
Model
Connecting Cable Size
Tank Unit
Outdoor Unit
WH-
ADC0912K6E5AN
WH-UXZ09KE5*,
WH-UXZ12KE5*
4 x min 4.0 mm
2
Ensure the colour of wires of Outdoor Unit and the terminal no. are the same to the Tank Unit respectively.
Earth wire shall be longer than the other wires as shown in the figure for the electrical safety in case of the
slipping out of the cord from the Holder (Clamper).
2. An isolating device must be connected to the power supply cable.
Isolating device (disconnecting means) should have minimum 3.0 mm contact gap.
Connect the approved polychloroprene sheathed power supply 1 cord and power supply 2 cord and type
designation 60245 IEC 57 or heavier cord to the terminal board, and to the other end of the cord to isolating
device (Disconnecting means). See below table for cable size requirement.
Model
Power Supply
Cord
Cable Size
Isolating Devices Recommended RCD
Tank Unit
Outdoor Unit
WH-ADC0912K6E5AN
WH-UXZ09KE5*,
WH-UXZ12KE5*
1
3 x min 4.0 mm
2
30A
30mA, 2P, type A
2
3 x min 4.0 mm
2
30A
30mA, 2P, type AC
3. To avoid the cable and cord being damaged by sharp edges, the cable and cord must be passed through a
bushing (located at the bottom of Control Board
⑥
) before terminal board. The bushing must be used and must
not be removed.
Terminals on the Outdoor Unit
1 2
3
2
3
Colour of wires (Connecting cables)
Terminals on the Tank Unit
L N
N
L
1
N
1
1
(Power Supply Cord)
Terminals on the isolating devices
from power supply (Disconnecting
means)
L
L
1
N
1
Power Supply 1 Power Supply 2
Tank Unit/
Outdoor Unit
connection
Power Supply 2 Cable
Power Supply 1 Cable
Terminal
Board
RCCB/ELCB
*1
*1
Connecting Cable
Holder
(Clamper)
Holder
(Clamper)
Terminal screw
Tightening torque cN•m {k
g
f•cm}
M4
157~196 {16~20}
M5
196~245 {20~25)
*1 - Earth wire must be longer than other cables for safety reasons.