Toshiba RAV-RM301MUT-E Service Manual page 86

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
Follower unit
Header 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
Central control devices: Max. 10 units
U1 U2
U3 U4
Refrigerant line 2
1 2 3
Header
unit
U3 U4 1 2 3
A B
Remote controller
G o r u p o p e a r o i t n ( M
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
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
) n
Refrigerant line 3 Refrigerant line 4
1 2 3
Follower unit Follower unit
1 2 3
A B
Remote controller wiring
Remote controller Remote controller
x a 8 . u t i n ) s
As status shipped from factory
Remarks
– 86 –
Size
Up to 1000m: twisted wire 1.25mm
2
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
1 2 3
Indoor/outdoor inter-unit wire (AC230V serial)
Central control system wiring
* Wiring for No.1 and 2 only
Header unit
1 2 3 U3 U4 1 2 3
A B A B
Remote controller
T w / 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
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
r t l p i ) e