Hitachi UTOPIA IVX Serie Manual De Instrucciones página 32

eleCTrIC WIrInG
10.3 COMMON WIRING
!
C A U T I O N
All the field wiring and electrical components must comply with local codes.
10.3.1 Electrical wiring between indoor unit and outdoor unit
• Connect the electrical wires between the indoor unit and the
outdoor unit, as shown below.
• follow local codes and regulations when performing
electrical wiring.
• If the refrigerant piping and the control wiring are connected
to the units in the same refrigerant cycle.
• Use twist pair wire (more than 0.75 mm²) for operation wiring
between outdoor unit and indoor unit, and operation wiring
between indoor unit and indoor unit.
• Use 2-core wire for the operating line (Do not use wire with
more than 3 cores).
• Use shielded wires for intermediate wiring to protect the
units from noise obstacle at length of less than 300 m and
size complied with local code.
Power source from the outdoor IVX unit to the indoor unit
nº 0 System
L1 L2 L3 L1 L2 L3 N N
outdoor unit
3
Indoor Unit
Terminal board
Circuit Breaker
earth leakage Breaker
field Wiring
field supplied
optional Accessory
Wiring example
Basic combinations (in the case of twin combination)
operating line
remote control line
Individual control
Running ON/OFF individually
Thermo-ON/OFF individually
16 PMML0395B rev.3 - 05/2019
(example)
operating line
(Shielded Pair Cable)
DC5V (non-Pole Transmission,
H-lInK System)
Indoor Unit
remote Control Switch
(Twisted Shielded Pair Cable)
operating line
remote control line
DSW6
ON
1 2
• open a hole near the connection hole of power source
wiring when multiple outdoor units are connected from one
power source line.
• The recommended breaker sizes are detailed in the Wire
size section.
• In the case that a conduit tube for field-wiring is not used, fix
rubber bushes with adhesive on the panel.
• All the field wiring and equipment must comply with local and
international codes.
• H-lInK twist pair shielded cable must be grounded in the
outdoor unit side.
!
C A U T I O N
Pay attention to the connection of the operating line. Incorrect connection
may cause the failure of PCB.
Independent power source of outdoor IVX unit and indoor unit
L1 L2 L3
3
3
remote control line
DSW6
ON
1 2
Individual control
Running ON/OFF simultaneously
Thermo-ON/OFF individually
(example)
nº 0 System
outdoor unit
N
Indoor Unit
Indoor Unit
remote Control Switch
(Twisted Shielded Pair Cable)
operating line
DSW6
ON
1 2
Simultaneous control
Running ON/OFF simultaneously
Thermo-ON/OFF simultaneously
operating line
(Twisted Shielded
Pair Cable)
DC5V (non-Pole
Transmission, H-lInK
System)