Hitachi YUTAKI M RASM-2VRE Instruction Manual page 27

ELECTRICAL AND CONTROL SETTINGS
• Following the Council Directive 2004/108/EC, relating to
electromagnetic compatibility, the table below indicates the
Maximum permitted system impedance Z
point of the user's supply, in accordance with EN61000-3-11.
Power
Model
supply
RASM-2VRE
1~ 230V
50Hz
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".
• 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 (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 unit operation, adjust the DSW4
pin 3 of the PCB1 to the ON position and use the adequate
protections.
15 PMML0506 rev.1 - 09/2019
at the interface
max
Operation mode Z (Ω)
max
- -
With DHW tank heater 0.30
- 0.43
With DHW tank heater 0.24
Models
RASM-2VRE
RASM-3VRE
-
-
10.2 ELECTRICAL WIRING CONNECTION
FOR OUTDOOR UNITS

The electrical wiring connection for the
outdoor unit is shown in figure below
RASM-(2-3)VRE
Power supply
1~ 230V 50Hz
10.2.1 Power and transmission wiring
connection

Safety instructions
?
N O T E
Check the requirements and recommendations in the chapter
"10 Electrical and control settings".
!
D A N G E R
• Do not connect the power supply to the unit prior to filling the
space heating circuit (and DHW circuit if it were the case) with
water and checking water pressure and the total absence of any
water leakage.
• Do not connect or adjust any wiring or connections unless the
main power switch is OFF.
• When using more than one power source, check and ensure that
all of them are turned OFF before operating the unit.
• Avoid wiring installation in contact with the refrigerant pipes,
water pipes, edges of plates and electrical components inside
the unit to prevent damage, which may cause electric shock or
short circuit.
!
C A U T I O N
• Use a dedicated power circuit for the unit. Do not use a power circuit
shared with the outdoor unit or any other appliance.
• Make sure that all wiring and protection devices are properly selected,
connected, identified and fixed to the correspond ing terminals of
the unit, specially the protection (earth) and power wiring, taking
into account the applicable national and local regulations. Establish
proper earthing; Incomplete earthing may cause electrical shock.
• Protect the unit against the entry of small animals (like rodents)
which could damage the drain pipe and any internal wire or any other
electrical part, leading to electric shock or short-circuit.
• Keep a distance between each wiring terminal and attach insulation
tape or sleeve as shown in the figure.
Tape or sleeve
Control cable
(5V)