1-11-1-2-3
1
NOTE
3P terminal board
4P terminal board
Inter-unit
control
wiring
Remote
control
wiring
CAUTION
Power supply
or
Connection cable
between outdoor
and indoor unit
U1 U2 R1 R2
L/1 N/2
3
(1) See the section “Recommended Wire Length and Wire
Diameter for Power Supply System” on page 1-11-1-2-1
for the explanation of “B”, “C”, “D” and “E” under the
section “ Wiring System Diagrams” on page 1-11-1-2-2.
(2) The basic connection diagram of the indoor unit shows the
terminal boards, so the terminal boards in your equipment
may differ from the diagram.
(3) Refrigerant Circuit address should be set before turning the
power on.
(4) Regarding Refrigerant Circuit address setting, refer to the
installation instructions supplied with the remote controller
(Optional). Auto address setting can be executed by remote
controller automatically.
(1) When linking the outdoor units in a network, it is necessary to install the terminating resistance.
The installation method of the terminating resistance is different according to the connecting procedure
of the inter-unit control wiring in the link.
In case that the inter-unit control wiring in the link are mixed with 2-line connections:
Set the terminating resistance with the TERMINAL pin (CN-TERMINAL) on the outdoor unit control
PCB.
The setting of the terminating resistance at shipment is SHORT side (operative). Leave one unit in
short circuit condition among outdoor units in the link. Change to OPEN for other units.
For a system without link (no wiring connection between outdoor units), do not remove the short plug.
●
(2) Do not install the inter-unit control wiring in a way that forms a loop.
(3) Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes
mis-address setting.
Outdoor unit
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Prohibited
Prohibited
Indoor unit
Outdoor unit Indoor unitIndoor unit
Indoor unitIndoor unit
NO
Branch point
SM830281-00_欧州向け R32シングル TD＆SM.indb 3 20/01/09 14:59:32
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