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ON-SITE SETTING AND OTHERS (Continued)
3.1.5 Setting Onboard Switches
Setting of terminating resistors is necessary for central control of custom indoor units only.
• Use SW01 to set terminating resistors.
• Set terminating resistors for the indoor unit only with the smallest refrigerant line address.
123
AB
U3 U4
U1
U3
U2
U4
123
123
AB
U3 U4
123
123
AB
123
U1
U3
U2
U4
1
ON
2
OFF
3
OFF
Central controller: Up to 10 units
Central controller Central controller
Refrigerant system 1 Refrigerant system 2 Refrigerant system 3
Outdoor
unit
R/C wiring
Header
Follower
R/C R/C R/C
TCC-LINK adapter (option)
Required for custom
indoor units other
than wall type
Indoor
unit
Group operation (up to 8 indoor units)
Refrigerant line address
SW01 bit 1
Remarks Bit 1 ON Factory setting Factory setting
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