Hitachi YUTAKI S80 Serie Manual De Instrucciones página 17

ELECTRICAL AND CONTROL SETTINGS
5 ELECTRICAL AND CONTROL SETTINGS
5.1 GENERAL CHECK
• Make sure that the following conditions related to power supply installation are satisfied:
- The power capacity of the electrical installation is large enough to support the power demand of the YUTAKI system (outdoor
unit + indoor unit + DHW tank).
- The power supply voltage is within ±10% of the rated voltage.
- The impedance of the power supply line is low enough to avoid any voltage drop of more than 15% of the rated voltage.
• Check to ensure that existing installation (mains power switches, circuit breakers, wires, connectors and wire terminals) already
complies with the national and local regulations.
• The use of the DHW tank heater is disabled as factory setting. If it is desired to enable the DHW tank heater operation during
normal indoor unit operation, adjust the DSW4 pin 3 of the PCB1 to the ON position and use the adequate protections.
• Check to ensure that the field supplied electrical components (mains power switches, circuit breakers, wires, connectors and
wire terminals) have been properly selected according to the electrical data indicated on this chapter and they comply with
national and local codes. If it is necessary, contact with your local authority in regards to standards, rules, regulations, etc.
• Ensure specifically that there is an Earth Leakage Breaker (ELB) installed for the units (indoor, outdoor and the optional DHW
tank).
• If the installation is already equipped with an Earth Leakage Breaker (ELB), ensure that its rated current is large enough to hold
the current of the units (indoor, outdoor and the optional DHW tank).
!
D A N G E R
• Do not connect the power supply to the indoor unit and DHW tank prior filling of water both circuits and checking water pressure and
the total absence of any water leak.
• Never connect the DHW tank to the main power supply. Always connect it to the YUTAKI S80 indoor unit as explained in the
"6 INSTALLATION" chapter.
• Do not connect or adjust any wiring or connections unless the main power switch is OFF.
5.2 ELECTRICAL WIRING BETWEEN INDOOR UNIT AND DHW TANK
?
N O T E
Please, refer to the YUTAKI S80 indoor unit Installation and operation
DHW tank.
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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 Unit controller electrical cable at the right and the electric
heater and thermistor cables at left.
9 PMML0344B rev.0 - 04/2016
All manuals and user guides at all-guides.com
manual, to know the specific protection for the combination of indoor unit and
Electric heater connection cable
Thermistor connection cable
Unit controller connection cable
OK
30(N)
}
31(L)
5
6
3(A)
4(B)