Hitachi YUTAKI M ATW-YMM-02 Installations- Und Betriebshandbuch Seite 13

ELECTRICAL AND CONTROL SETTINGS
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Unit controller (PC-ARFH2E) connection
!
C A U T I O N
It is mandatory to install the unit controller (PC-ARFH2E) in the service
cover.
Connection for the Unit controller PC-ARFH2E should be done
on the PCB3 of the Remote control box as shown in the next
figure:
Terminal Board 2
For this purpose, a cable is supplied with the Remote
control box, as previously detailed in "Factory-supplied unit
components".
The torque for the tightening of the screws of each Terminal
board is explained in the table below
Terminal board
TB1
TB2
8.4.3 Wiring size and minimum requirements of protection device
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C A U T I O N
• Check to ensure that the field supplied electrical components (main power switches, circuit breakers, wires, connectors and wire terminals) have
been properly selected according to the electrical data indicated in 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 unit. Do not use a power circuit shared with the outdoor unit or any other appliance.
Use wires which are not lighter than the polychloroprene sheathed flexible cord (60245 IEC 57 code designation)
Model Power supply
ATW-YMM-02 1~230V 50Hz
!
C A U T I O N
• Ensure that there is an Earth Leakage Breaker (ELB) and a Circuit
Breaker (CB) installed in the power supply line.
• If the installation is already equipped with an ELB, ensure that its
rated current is large enough to hold the current of the units (Outdoor
unit)
7 PMML0603 rev.0 - 02/2023 - 1000014074
PC-ARFH2E
Tightening Torque (Nm/cm )
2
2.0~2.5
1.0~1.3
Max.
Operation mode
Current (A)
- 5
With DHW Tank 19
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Safety instructions
!
D A N G E R
• Do not connect the power supply to the unit before all
connections have been previously done.
• 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 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
Power supply cables Transmitting cables
EN60335-1 EN60335-1
2 x 0.75 mm
2
2 x 0.75 mm
2 x 4 mm
2
?
N O T E
• Electric fuses can be used instead of magnetic Circuit Breakers (CB).
In that case, select fuses with similar rated values as the CB.
• The Earth leakage breaker (ELB) mentioned on this manual is also
commonly known as Residual Current Device (RCD) or Residual
Current Circuit Breaker (RCCB).
• The circuit breakers (CB) are also know as Thermal-Magnetic Circuit
Breaker or just Magnetic circuit breaker (MCB).
CB ELB
(A) (nº of poles/A/mA)
5
2/40/30
2
20