1
1-305
Basic wiring diagram 2
(Wiring procedure)
Group control (when a central control device is not used)
1.
Wall mounted units do not include a terminal board for connecting a remote controller.
2.
For group control of wall mounted units, connect the remote control communication wiring to the remote
controller connector (2P) on the main unit, as shown in the diagram.
N OT E
* Models with auxiliary heaters cannot be used for “crossover wiring” of the indoor unit power wires.
(Use a pull box to divide the wiring.)
* Be sure to use the indoor unit temperature sensor (body sensor) when using this control. (Status at shipment)
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 section “Setting the outdoor unit system addresses” for Type K1.)
(Set using the system address black rotary switch on the outdoor unit control PCB.)
1 2
1
2
U2
U1
L
N
U2
U1
L
N
1
2
U2
U1
L
N
N
L
1 2
N
L
1
2
U2
U1
L
N
Leakage breaker
System address rotary switch
(Change the setting to “1”.)
Leakage
breaker
Wall
mounted
type
Indoor
unit
No. 1
Indoor
unit
No. 2
Ground
Ground
Ground
Indoor
unit
No. 3
Indoor
unit
No. 4
System address rotary switch
(Change the setting to “2”.)
Leakage breaker
Leakage breaker
Outdoor unit
Outdoor unit
Ground
Indoor power crossover wiring
– up to 16 units
(no-heater units only)
Inter-unit control wiring
Connection to lead
wires
(Black / White)
Remote control communication
wiring for group control
(field-supply wiring)
Up to 8 units can be set
for group control
(Thickness 0.5 – 2.0 mm
2
,
total length 200 m or less)
Ground
Ground
(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 section “Indoor unit remote controller main-sub setting” for Type K1.)
(2)
Connect the crossover wiring to 1 and 2 on the remote control wiring terminal boards of the No. 1 indoor unit
and the other indoor units (as shown in Basic wiring diagram 2).
(3)
Connect the inter-unit control wiring to 1 and 2 on the No. 1 indoor unit terminal board, and to 1 and 2 on the
outdoor unit terminal board. Connect the wiring in the same way from the other outdoor units to U1 and U2 on the
indoor units terminal boards (different refrigerant system).
(4)
Perform automatic address setting from the outdoor unit. (For the automatic address setting procedure, refer to
section “Automatic address setting from the outdoor unit” for Type K1.)
SM830231-02̲Single̲欧州.indb 305
SM830231-02̲Single̲欧州.indb 305
2014/09/19 13:21:48
2014/09/19 13:21:48
