Panasonic (WH-UD12CE5-A-1, Service Manual

Page: 56 / 158

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12.3.4 CONNECT THE CABLE TO THE INDOOR UNIT
1 Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 4.0
or 6.0 mm
2
flexible cord, type designation 60245 IEC 57 or heavier cord.
o
Ensure the colour of wires of outdoor unit and the terminal no. are the same to the indoor unit’s
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 (3 x 4.0 or 6.0 mm
2
) and power
supply 2 cord (3 x 4.0 mm
2
) and power supply 3 cord (3 x 1.5 mm
2
), type designation 60245 IEC 57 or
heavier cord to the terminal board, and to the other end of the cable to isolating device (Disconnecting
means).
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 indoor unit) before being connected to the terminal block. The bushing must
be used and must not be removed.
Connecting with external device (optional)
1 All connections shall follow to the local national wiring standard.
2 It is strongly recommended to use manufacturer-recommended parts and accessories for installation.
3 Maximum output power of booster heater shall be
≤ 3 kW. Booster Heater cord must be (3 x min 1.5 mm
2
), of
type designation 60245 IEC 57 or heavier.
4 Three-Way Valve shall be spring and electronic type. Valve cable shall be (3 x min 0.5 mm
2
), of type
designation 60245 IEC 57 or heavier, or similarly double insulation sheathed cable.
* note: - Should be CE marking compliance component.
- It should be directed to heating mode when it is OFF.
- Maximum load for the valve is 9.8VA.
5 Room Thermostat cable must be (4 or 3 x min 0.5 mm
2
), double insulation layer of PVC-sheathed or rubber-
sheathed cable.
6 Tank OLP cable must be (2 x min 0.5 mm
2
), double insulation layer of PVC-sheathed or rubber-sheathed
cable.
* note: if such connection deemed NO necessary for tank OLP, please connect jumper between terminal
no. 13 and 14.
7 Tank Sensor shall be resistance type, please refer to Graph 5.1 for the characteristic and details of sensor.
Its cable shall be (2 x min 0.3 mm
2
), double insulation layer (with insulation strength of min 30V) of PVC-
sheathed or rubber-sheathed cable.
8 External Controller shall be connected to 1-pole switch with min 3.0mm contact gap. (connection refer to
Diagram 5.2). Its cable must be (2 x min 0.5 mm
2
), double insulation layer of PVC-sheathed or rubber-
sheathed cable.
* note: - When making such connection, kindly remove the jumper between terminal no. 17 and 18.
- Switch used shall be CE compliance component.
- Maximum operating current shall be less than 3A
rms
.
9 Must install Solar Connection PCB (optional) to indoor unit when Solar Pump Station is utilized. Refer Solar
Connection PCB’s installation instruction for detail of installation.
10 Solar Three-way Valve cable shall be (3 x min 0.5 mm
2
), double insulation layer PVC-sheathed or rubber-
sheathed cable.
11 Solar Pump Station cable shall be (2 x min 0.5 mm
2
), of double insulation PVC-sheathed or rubber-sheathed
cable. Strongly recommended install with maximum length of 10 meter only.