2-16. System Control
System control refers to the link wiring connection for control of simultaneous operation multi systems, group
control, and main/sub remote controller control.
2-16-1. Basic wiring diagram 1
Single type and simultaneous operation multi system
• Si
multaneous operation multi system
Up to 4 (Double-Twin) indoor units can be connected to 1 outdoor unit for operation.
(However, coordinate the outdoor unit capacity and the total capacity of the indoor units.)
(It is not possible to connect individual remote controllers for independent operation.)
• Be careful to
avoid miswiring when connecting the wires.
(Miswiring will damage the units.)
NOTE
* If the system address is “0”, automatic address setting is performed when the power is turned ON (in the case
sho
wn in Basic wi
ring diagram 1). This requires approximately 4 – 5 minutes (when the outdoor / indoor unit ratio
is 1:1 as sho
wn in Basic wi
ring diagram 1).
Dur
ing automatic address setting, LED 1 and 2 on the outdoor unit control PCB
blink alternately.
These LED turn OFF when automatic address setting is completed.
2
2-13
(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 2-16-5.)
(2) Connect the communication wiring to the lead wires (white/black) that extend out from the remote controller
connectors of the No. 1 indoor unit and other wall-mounted indoor units (as shown in Basic wiring diagram 1).
Connect the communication wiring to 1 and 2 on the remote controller wiring terminal plate for units (4-way,
ceiling-mounted, etc.) other than the No. 1 indoor unit.
(3) Connect the inter-unit control wiring to 1 and 2 on the No. 1 indoor unit terminal plate, and to 1 and 2 on the
outdoor unit terminal plate.
Also connect the inter-unit control wiring between the indoor units.
(4) When the indoor and outdoor unit power is turned ON, automatic address setting is performed (when there is
only 1 outdoor unit or when the system address is “0”).
SM830159-03̲Elite̲PAC-i.indb 13
SM830159-03̲Elite̲PAC-i.indb 13
2010/11/12 15:50:06
2010/11/12 15:50:06
