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CAUTION
(1) When linking outdoor units in a network (S-net link system), disconnect the terminal extended from the
short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor
units except any one of the outdoor units.
(When shipping: In shorted condition.)
Otherwise the communication of S-net link system is not performed. For a system without link (no con-
nection wiring 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. (Fig. 4-1)
Outdoor unit
Indoor unit
(3) Do not install inter-unit control wiring such as star
branch wiring. Star branch wiring causes mis-address
setting.
Outdoor unit
NO
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches less than 1 m are not included in the total branch number.) (Fig. 4-3)
Branch
point
16 or fewer
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit
more than 1 m
Indoor unit
more than 1 m
Indoor unit
less than 1 m
Indoor unit
Outdoor unit
Prohibited
Indoor unit
Indoor unit
Fig. 4-1
NO
Indoor unit
Indoor unit
Branch point
Fig. 4-2
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Fig. 4-3
10
Prohibited
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
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