Hitachi YUTAKI S80 Series - Electrical Wiring between Indoor Unit and DHW Tank

22 PMML0291A rev.2 - 09/2014
ELECTRICAL WIRING
6.2 ELECTRICAL WIRING BETWEEN INDOOR UNIT AND DHW TANK
NOTE
Please, refer to the YUTAKI S80 indoor unit Installation and operation manual, to know the specic protection for the combination of
indoor unit and DHW tank.

Factory supplied wire sizes
The supplied wires for the connection between the DHW tank and the indoor unit are already connected to the DHW tank. They are
located at the bottom front side of the tank fastened with clamps. The LCD electrical cable at the right and the electric heater and
thermistor cables at left.
Electric heater connection cable
24
25
14
}
Thermistor connection cable
LCD connection cable
Model Power supply
Maximum
current
(A)
LCD connection cable
size
Electric heater connec-
tion cable size
Thermistor connection
cable size
EN60335-1 EN60335-1 EN60335-1
DHWS195S-2.0H1E
1~ 230V 50Hz 8.7 6 x 0.3 mm² x 1.8m 3 x 1.0 mm
2
x 1.8m 2 x 0.5 mm
2
x 2.0m
DHWS260S-2.0H1E
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Extension cables (supplied with the ATW-FWP-01 accessory. Only for installation of the DHW tank
beside the indoor unit)
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 cable for the electric heater
Extension cable for the thermistor
Extension cable for the LCD controller
Model Power supply
Maximum current
(A)
LCD extension cable
size
Electric heater exten-
sion cable size
Thermistor extension
cable size
EN60335-1 EN60335-1 EN60335-1
DHWS195S-2.0H1E
1~ 230V 50Hz 8.7 6 x 0.3 mm² x 3.5m 3 x 1.0 mm
2
x 3.5m 2 x 0.5 mm
2
x 3.5m
DHWS260S-2.0H1E