10
.
8
.
3
Wiring Specifications
Number of wires
2
Size
Up to 1000 m: 1.25 mm² stranded wires
Up to 2000 m: 2.0 mm² stranded wires
Specification
MVVS
• A 2-wire non-polarity cable is used.
• The cable length depends on each central control system.
• When used in a system including multiple air conditioners, the length includes the length of all wires between
indoor and outdoor units on the side of multiple air conditioners.
• Use 2-wire shield cable (MVVS) to protect from noise.
• Joint shield wire between indoor units by closed-end terminating, and leave its end open with insulation
processing. Make one-point grounding at the indoor unit side. Set the terminating resistors.
(Central control for custom indoor units only)
Notes
1 Joint shield wire between indoor units by closed-end terminating.
2 Leave the end of the shield wire open with insulation processing.
3 Make one-point grounding at the indoor unit side.
Central control device
U1 U2
1 2 3
Outdoor unit
Indoor unit
1 2 3
1 2 3
1 2 3
1 2 3
A B
U3 U4
1 2 3
A B
U3 U4
1 2 3
A B
1 2 3
A B
1 2 3
A B
U3 U4
Caution 1
Remote controller
Follower unit
Caution 2
Remote controller
Remote controller
Central control system wiring
Header unit
Header unit
Follower unit
Remote controller
(Group operation)
(
Twin
operation)
Caution 3
: TCC-LINK adapter (option)
Required for DI-SDI indoor units
other than Wall Type
Earth screw
FILE NO. SVM-
12042
–
74
–
Summary of Contents for RAV-SM566KRT-A
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