Hitachi YUTAKI S Series Technical Catalogue page 116

9 Electrical and control settings
General check
9.1 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
EN61000-3-11.

Split system - Outdoor unit
Model
RAS-2WHVRP
RAS-2.5WHVRP
RAS-3WHVRP

Split system - Indoor unit
YUTAKI S
Model
RWM-(2.0-3.0)NRE(-W)
?
N O T E
• The data corresponding to DHW tank heater is calculated in combination with the domestic hot water tank accessory
"DHWT-(200/300)S-3.0H2E".
• In case of three phases connection, Z
YUTAKI S COMBI
Model
RWD-(2.0-3.0)
NRW(S)E-(200/260)S(-K)(-W)

Monobloc system - YUTAKI M
Model
RASM-2VRE
RASM-3VRE
?
N O T E
The data corresponding to DHW tank heater is calculated in combination with the domestic hot water tank accessory "DHWT-(200/300)S-3.0H2E".
108 TCGB0123 rev.2 - 10/2019
at the interface point of the user's supply, in accordance with
max
Power supply Z (Ω)
max
-
1~ 230V 50Hz -
0.43
Power supply
Without electric heaters
With electric heater
1~ 230V 50Hz
With DHW tank heater
With electric and DHW tank heaters
is not considered.
max
Power supply
Without electric heaters
With electric heater
1~ 230V 50Hz
With DHW tank heater
With electric and DHW tank heaters
Power supply
-
With DHW tank heater
1~ 230V 50Hz
-
With DHW tank heater
Operation mode
Operation mode
Operation mode
Z (Ω)
max
-
-
-
0.26
Z (Ω)
max
-
-
-
0.28
Z (Ω)
max
-
0.30
0.43
0.24