Hitachi UTOPIA ES Serie Bedienungsanleitung Seite 23

ELECTRICAL WIRING
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Refrigerant Cycle Number Setting
DSW4
Setting position
(Setting for the ten digit).
RSW1
Setting position.
(Setting for the last digit).
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DSW5: Transmission Setting of End Terminal
Resistance
Setting before shipment
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.
• 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 shown in Table of
electrical data and recommended Wiring, Breaker Size/1 O.U.
• 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.
13 PMML0394B rev.0 - 11/2015
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DSW6: Function setting (RAS-3HVRNM2E) (No
setting is required)
Power source setting
(RAS-(4-6)H(V)RNM2E and RAS-(4-6)H(V)RNS2E)
(Setting is required)
Power source setting
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JP1~6: Jumper cable
JP1 cut: Fixing Cooling Mode
JP5 cut: Alternative Defrosting
No setting is required
JP6 cut: High-Pressure Control Based on
R407C Piping
!
C A U T I O N
Pay attention to the connection of the operating line. Incorrect connection
may cause the failure of PCB.
IVX ES