General Check - Hitachi YUTAKI S Series Installation And Operation Manual

6.1

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 (if apply)).
✓ 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.
• Following the Council Directive 2004/108/EC, relating to electromagnetic compatibility, the
table below indicates the Maximum permitted system impedance Z
the user's supply, in accordance with EN61000‑3‑11.
Model Power supply
~ 230V 50Hz
3N~ 400V 50Hz

NOTE
The data corresponding to DHW tank heater is calculated in combination with the domestic hot
water tank accessory "DHWT‑(200/300)S‑3.0H2E".
• The status of Harmonics for each model, regarding compliance with IEC 61000‑3‑2 and
IEC 61000‑3‑12, is as follows:
Status regarding compliance with IEC 61000‑3‑2 and IEC 61000‑3‑12
Equipment complying with IEC 61000‑3‑2 (*): Professional use
Equipment complying with IEC 61000‑3‑12
Installation restrictions may be applied by supply authorities in relation to harmonics
• 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
for the detailed information.
PMEN0643 rev.0 - 04/2023
Without electric heater
With electric heater
With DHW tank heater
With electric and DHW tank heaters
Without electric heater
With electric heater
With DHW tank heater
With electric and DHW tank heaters
at the interface point of
max
Operation mode
"6.2 Electrical connection"
Z (Ω)
max
‑
‑
‑
0.30
‑
‑
‑
‑
6
Models
YUTAKI S
tbc
31