Electrical Connection; Wiring Size - Hitachi YUTAKI S COMBI Series Installation And Operation Manual

• Check to ensure that existing installation (main 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. Refer to the section
connection" for the detailed information.
6.2

Electrical connection

!
CAUTION
• 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.
• Use a dedicated power circuit for the indoor unit. Do not use a power circuit shared with the
outdoor unit or any other appliance.
6.2.1 Wiring size
Use wires which are not lighter than the polychloroprene sheathed flexible cord (code designation
60245 IEC 57).
Split system - Indoor unit
◆
YUTAKI S Combi
Model Power supply
Without electric heaters
With electric heater
~ 230V 50Hz
With DHW tank heater
With electric and DHW
tank heaters
Without electric heaters
With electric heater
3N~400V 50Hz
With DHW tank heater
With electric and DHW
tank heaters
PMEN0645 rev.0 - 04/2023
Maximum
Operation mode current
13.7
12.6
25.6
12.6
12.6
Power supply cables
(A)
EN 60335‑1
0.6 2 x 0.75 mm + GND
2
2 x 2.5 mm + GND
2
2 x 2.5 mm + GND
2
2 x 6.0 mm + GND
2
0.6 4 x 0.75 mm + GND
2
9.3 4 x 2.5 mm + GND
2
4 x 2.5 mm + GND
2
4 x 2.5 mm + GND
2
"6.2 Electrical
Actuator
Transmitting
cables
cables
EN 60335‑1
2 x 0.75 mm
2
2 x 0.75 mm
2
(Shielded
+ GND
cable)
35
6