74
12.2.4 Connect the Cable to Tank Unit
WARNING
This section is for authorized and licensed electrician only. Work behind the Control Board Cover secured by screws must only be carried out
under supervision of qualified contractor, installation engineer or service person.
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-
ADC0309J3E5UK
WH-UD03JE5,
WH-UD05JE5
4 x min 1.5 mm
2
WH-UD07JE5,
WH-UD09JE5
4 x min 2.5 mm
2
o Ensure the colour of wires of Outdoor Unit and the terminal no. are the same to the Tank Unit
respectively.
o 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.
o Isolating device (disconnecting means) should have minimum 3.0 mm contact gap.
o 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-
ADC0309J3E5UK
WH-UD03JE5,
WH-UD05JE5
1 3 x min 1.5 mm
2
15/16A 30mA, 2P, type A
2 3 x min 1.5 mm
2
15/16A 30mA, 2P, type AC
WH-UD07JE5,
WH-UD09JE5
1 3 x min 2.5 mm
2
25A 30mA, 2P, type A
2 3 x min 1.5 mm
2
15/16A 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) before terminal board. The bushing must be used and must
not be removed.
123
123
LN
LN
(Power Supply Cord)
Power Supply 1
Power Supply 2
Terminals on the Outdoor Unit
Colour of wires (Connecting cables)
Terminals on the Tank unit
Terminals on the isolating devices
from power supply (Disconnecting
means)
L
1
N
1
L
1
N
1
Tank Unit /
Outdoor Unit
connection
Power Supply Cable
Holder (Clamper)
RCCB/ELCB
*1
Terminal Board
Connecting Cable
Terminal screw Tightening torque cN•m {kgf•cm}
M4 157~196 {16~20}
M5 196~245 {20~25)
*1 - Earth wire must be longer than other cables for safety reasons
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