Cables Connection - Hitachi YUTAKI S80 Serie Manuel D'instructions

INSTALLATION
6 Connect the tank wiring to the indoor unit.
• The three electrical wires are already connected to the DHW
tank. They are located at the front side of the DHW tank
fastened with clamps.
• When the domestic hot water tank is installed beside the
indoor unit, it is needed to extend the cables up to the
terminal board 2 (TB2) of the indoor unit, which is placed
at certain distance from the tank. These cables are the
following:
Extension cables (supplied with the ATW-FWP-02 accessory)
Extension cable for the electric heater
Extension cable for the thermistor
Extension cable for the unit controller

Cables connection

Electric heater of the tank
• Cut and strip the free end of the 3 wires of the factory
supplied electric heater cable.
1.1)
Connect the extension cable to the factory supplied cable.
2.1)
(Factory supplied cable)
(*)
2.2)
(Factory supplied cable)
(*): Use a crimping tool to crimp the cables.
• Connect the earth wire to the correct terminal, as shown in
the picture For more information refer to the wiring diagram.
18 PMML0344B rev.2 - 01/2021
1.2)
(Extension cable)
(Extension cable)
30(N)
}
31(L)
Tank thermistor
• Connect the extension cable to the factory supplied cable.
1.1)
(Factory supplied cable)
(*)
1.2)
(Factory supplied cable)
(*): Use a crimping tool to crimp the cables.
• Connect the extension cables to the correct terminal, as
shown in the picture. For more information refer to wiring
diagram.
LCD controller
• Connect the extension cable to the factory supplied cable.
1.1)
(Factory supplied cable)
(*)
1.2)
(Factory supplied cable)
(*): Use a crimping tool to crimp the cables.
• Take the three cables and drive them through the rear cover
of the tank unit.
(Extension cable)
(Extension cable)
5
6
(Extension cable)
(Extension cable)
3(A)
4(B)