10 Electrical wiring
System wiring diagram
TCGB0136 rev.1 - 05/2021
105
10
DSW6: No setting is required (do not change)
Factory setting
RAS-(4-6)H(V)(R/N)C2E
RAS-(4-6)H(V)(R/N)P2E
DSW7: No setting is required (do not change)
Factory setting
RAS-(4-6)H(V)(R/N)C2E
RAS-(4-6)H(V)(R/N)P2E
10.4 System wiring diagram
10.4.1 Outdoor and indoor unit electrical wiring
• Connect the electrical wires between the indoor unit and the outdoor unit as show in the figure.
•
When installing the electrical wiring, follow local codes and regulations.
•
The refrigerant piping and the control wiring are connected to the units in the same refrigerant cycle.
•
Use shielded twisted pair cable (more than 0.75 mm
2
) for operation wiring between the outdoor unit and indoor unit,
and operation wiring between indoor unit and indoor unit.
•
Use a 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 interference at lengths of less than 300 m.
The size must comply with local code.
•
Open a hole near the connection hole of power source wiring when multiple outdoor units are connected from a
single power source line.
•
The recommended breaker sizes are detailed in the
section.
• In the case that a conduit tube for field-wiring is not used, fix rubber bushes with adhesive on the panel.
• All 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.
