Hitachi YUTAMPO Serie Installations- Und Betriebshandbuch Seite 15

ELECTRICAL AND CONTROL SETTINGS
In case of power supply through the outdoor unit
Tank Unit
Communication (Power IU PCB)
Power supply to Electrical Heater
of the tank
!
C A U T I O N
This power supply is not available in case of combination with RAM-90NYP5B.
6.4 WIRING SIZE AND MINIMUM REQUIREMENTS OF THE PROTECTION DEVICES
!
C A U T I O N
• Make sure 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 in this chapter and that they comply with national and local codes. If necessary, contact
your local authority concerning standards, rules, regulations, etc.
Use wires which are not lighter than the polychloroprene sheathed flexible cord with code designation 60245 IEC 57.
Type of powering
scheme
Independent supply to the
1~ 230V 50Hz
indoor unit (tank)
Independent supply to the
1~ 230V 50Hz
outdoor unit
Common power supply
for the indoor (tank) and
outdoor units
1~ 230V 50Hz
(Not available in case of
combination with
RAM-90NYP5B)
!
C A U T I O N
• Ensure specifically that there is an earth leakage breaker (ELB) installed for both the outdoor and indoor unit.
• If the installation is already fitted with an earth leakage breaker (ELB), ensure that its rated current is large enough to withstand the current of the
units (both outdoor and indoor).
?
N O T E
• Electric fuses can be used instead of magnetic circuit breakers (CB). In that case, select fuses with rated values similar to those of the CB.
• The earth leakage breaker (ELB) mentioned in this manual is also commonly known as residual current device (RCD) or residual current circuit
breaker (RCCB).
• The circuit breakers (CB) are also known as thermal-magnetic circuit breakers or just magnetic circuit breakers (MCB).
• The "Maximum current" shown in the tables is the maximum total running current of the unit under the following condition:
- Power supply voltage: 90 % of the rated voltage.
• The power supply cables must be appropriately sized to provide this maximum current value.
• Specifications in these tables are subject to change without prior notice in order to let HITACHI offer the latest innovations to its customers.
• The abbreviations used in the table stand for the following concepts:
U: Power supply
IPT: Total input power
STC: Starting current: Less than maximum current
RNC: Running current
MC: Maximum current
9 PMML0451 rev.2 - 03/2018
Outdoor Unit
1 230V 50Hz ~
Power supply to the
outdoor unit and the
electrical heater of
the tank.
Earth
Applicable
voltage
Power RNC
supply (A)
U min. U max.
(V) (V)
207 253 7.1
207 253 4.9
207 253 11.7
!
C A U T I O N
• If the electrical heater is not used, the indoor unit must be wired to
earth through the outdoor unit (1-2-3 and earth).
• Make sure that the transmission wiring is not connected to any live part
by mistake, since it could damage the PCB.
• These wiring diagrams are for illustrative purposes only. The location
CB
of the terminals in the diagrams may differ from the actual location of
ELB
the terminals in the electrical box.
Max.
IPT MC CB
IPT
(kW) (A) (A)
(kW)
1.64 7.5 1.64 10
1.04 8.5 1.80 10
2.68 16 3.44 20
Section of the
Section of
connection wires
ELB the power
between the tank
(n/A/mA) cable
and the outdoor unit
(L-N)
2/40/30 1.5 mm
2
2/40/30 1.5 mm
2
2/40/30 4.0 mm
2
(1-2-3)
0.75 mm
2
0.75 mm
2
0.75 mm
2