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4. Wiring Specifications
• Use 2-core with no polar wire.
• Match the length of wire to wire length of the central control
system. If mixed in the SMMS system, the wire length is
lengthened with all indoor/outdoor inter-unit wire length at side.
• To prevent noise trouble, use 2-core shield wire.
• Connect the shield wire by closed-end connection and apply open process (insulating process) to the last
terminal. Ground the earth wire to 1 point at indoor unit side. (In case of central controlling of digital inverter
(DI, SDI) unit setup)
1) Closed-end connection of shield wire (Connect all the connecting parts of each indoor unit)
2) Apply open process to the last terminal (insulating process).
3) Ground earth wire to 1 point at indoor unit side.
Central control device
U1 U2
Outdoor unit
1 2 3
Indoor unit
U3 U4
1 2 3
A B
Remote controller
5. P.C. Board Switch (SW01) Setup
When performing collective control by customized setup only, the setup of terminator is necessary.
• Using SW01, set up the terminator.
• Set up the terminator to only the interface connected to the indoor unit of least line address No.
Central control device
Central control device
U1
U2
U3
U4
Refrigerant line 1
Outdoor unit
1 2 3
Indoor unit
U3 U4
1 2 3
A B
1:1 model connection interface
(TCC-LINK adapter)
This product
(
)
sold separately
Remote controller
Line address
1
SW01 Bit 1
ON
SW01 Bit 2
OFF
Remarks
Turn SW01 Bit 1 to ON.
(Reference) Setup contents of switch
SW01
Bit 1
Bit 1
OFF
OFF
ON
OFF
OFF
ON
ON
ON
1 2 3
Header unit
Follower unit
U3 U4
1 2 3
A B
Remote controller
Remote controller
(
G
o r
u
p
o
p
e
a r
o i t
) n
Central control devices: Max. 10 units
U1
U2
U3
U4
Refrigerant line 2
Refrigerant line 3
1 2 3
Header
Follower unit
unit
U3 U4
1 2 3
A B
Remote controller
Remote controller
G
o r
u
p
o
p
e
a r
o i t
n
(
M
x a
2
OFF
OFF
As status shipped from factory
Terminator
None
Mixed with SMMS (Link wiring) at shipment from factory
100Ω
Central control by digital inverter only
75Ω
Spare
43Ω
Spare
No. of wires
2
CAUTION
Central control system wiring
1 2 3
1 2 3
Follower unit
1 2 3
1 2 3
A B
A B
Remote controller
Refrigerant line 4
1 2 3
1 2 3
Follower unit
1 2 3
1 2 3
A B
A B
Remote controller wiring
Remote controller
8 .
u
t i n
) s
T
w
As status shipped from factory
Remarks
- 72 -
Size
Up to 1000m: twisted wire 1.25mm
Up to 2000m: twisted wire 2.0mm
: 1:1 model connection
interface
(TCC-LINK adapter)
(This option)
Follower unit
Header unit
U3 U4
1 2 3
A B
Earth screw
(
r T
p i
e l
o
p
e
a r
o i t
) n
Indoor/outdoor inter-unit wire (AC230V serial)
Central control system wiring
* Wiring for No.1 and 2 only
Header unit
U3 U4
1 2 3
A B
Remote controller
/ n i
r T
p i
e l
o
p
e
a r
o i t
n
E (
a x
m
p
e l
f o
r t
l p i
) e
4
OFF
(OFF at shipment from factory)
OFF
(OFF at shipment from factory)
2
2
1 2 3
A B
Follower
unit
1 2 3
A B
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Troubleshooting
