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Installation Manual
Switch setting (setting example when controlling 2 or more refrigerant lines centrally)
Outdoor units (setting manually)
*The items in bold font must be set manually.
CAUTION
Relay connector connection
Never connect relay connectors between the [U1, U2] and [U3, U4] terminals before completing the address setting of
all the refrigerant lines. Otherwise, the addresses cannot be set correctly.
Outdoor unit’s
interface P.C. board
Outdoor unit
Outdoor unit
Outdoor unit
Factory default
SW13, 14
(Line (system) address)
1
2
3
1
Dip switch 2 of SW30
(Terminator of indoor /
outdoor communication
line and central control
line)
ON
Set to OFF after
setting addresses.
Set to OFF
after setting
addresses.
ON
Relay connector
Connect after setting
addresses.
Connect after setting
addresses.
Connect after setting
addresses.
Open
Line (system) address
1
1
2
2
3
Indoor unit address
1
2
1
2
1
Group address
0
0
1
2
0
2
U
1
U
B
A
2
U
1
U
2
U
1
U
B
A
B
A
A
2
U
1
U
2
U
1
U
B
A
B
U4
U3
U2
U1
CN02
CN10
U4
U3
U2
U1
CN02
CN10
U4
U3
U2
U1
CN02
CN10
Central
control
Remote
control
Remote
control
Remote
control
Remote
control
Group
Individual
Indoor units
(automatic setting)
Outdoor unit
[U1, U2] and
[U3, U4] connected
Outdoor unit
[U1, U2] and
[U3, U4] connected
Outdoor unit
[U1, U2] and
[U3, U4] connected
Manual address setting using a remote control
This procedure should be used if the indoor unit wiring is completed and the outdoor unit wiring has not been started.
For this procedure, the group remote control should not be connected. One individual remote control should be used
to set the address on each individual indoor unit (one unit at a time), by wiring the remote control directly to the indoor
unit that is to be addressed.
When the address setting procedure is completed for the individual indoor units, the group remote control should be
connected as shown in the following figure.
CAUTION
Connector
Do not close the connectors between the (U1, U2) and (U3, U4) terminals before completing all the refrigerant line
address settings. If a connector is closed, the address cannot be set correctly.
Wiring example for 2 refrigerant lines
Line (system) address
1
1
1
2
2
Indoor unit address
1
2
3
1
2
Group address
1
Header unit
2
Follower unit
2
Follower unit
2
Follower unit
2
Follower unit
Outdoor
unit
Outdoor
unit
Remote control
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 1
Refrigerant line 1
Refrigerant line 2
Indoor unit 2
EN-41
EN-42
+00_EB99809701_00Ta.book Page 21 Tuesday, December 6, 2016 2:07 PM
