Technibel CAFP 124 R - Page 77

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* If the system address is “0,” automatic address setting is performed when the power is turned ON (in the case
shown in basic wiring diagram 1).
This requires approximately 4 – 5 minutes (when the outdoor / indoor unit ratio is 1:1 as shown in basic wiring
diagram 1).
During automatic address setting, LED 1 and 2 on the outdoor unit control PCB blink alternately. These LEDs
turn OFF when automatic address setting is completed.
10-16-2. Basic wiring diagram 2
Group control (when a central control device is not used)
● A maximum of 8 indoor units can be connected to a single remote controller.
Example: In a refrigerant system where 2 or 3 indoor units are connected to 1 outdoor unit, set the new system
address (refrigerant system address) before turning ON the remote power switch. (Refer to 10-15-3.)
(Set using the system address black rotary switch on the outdoor unit control PCB.)
NOTE
1
2
2
1
1
2
L
N
1
2
U2
U1
L
N
1
2
U2
U1
L
N
N
L
1
2
N
L
1
2
U2
U1
L
N
1
2
U2
U1
L
N
Leakage breaker
Leakage breaker
Leakage breaker
Leakage breaker
Outdoor unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Outdoor unit
Ground Ground
GroundGround
GroundGround
Ground
System address rotary switch
(Change the setting to “1”.)
System address rotary switch
(Change the setting to “2”.)
Indoor power crossover
wiring – up to 16 units
(no-heater units only)
Inter-unit control wiring
No. 1
No. 2 No. 3 No. 4 No. 5
Remote controller crossover wiring for
group control (field-supply wiring)
Up to 8 units can be set
for group control
Connection to lead wires
(Black / White)
Wall-mounted
type
(Thickness 0.5 – 2.0 mm
2
,
total length 200 m or less)
1. Wall-mounted units do not include a terminal plate for connecting a remote controller.
2. For group control of wall-mounted units, connect the remote controller crossover wiring to the remote controller connector
(2P) on the main unit, as shown in the diagram.
Fig. 10-14
(Wiring procedure)
(1) Set the No. 1 wall-mounted indoor unit so that it can be operated by the wireless remote controller. (This is set
at the time of shipment.)
On the indoor unit control PCBs, set the No. 2 and following wall-mounted units to the sub remote controller.
(Refer to Item 10-16-5.)
(2) Connect the crossover wiring to 1 and 2 on the remote controller wiring terminal plates of the No. 1 indoor unit
and the other indoor units (as shown in the basic wiring diagram 2 above).
04-393 DC INV Tech p 64-110 12/13/04 11:35 AM Page 77