Sanyo Big PACi 18 Series Technical Data & Service Manual page 144

CAUTION
(1) When linking the 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 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. (Fig. 1-16)
Outdoor unit
Indoor unit
(3) Do not install inter-unit control wiring such as star branch wiring.
Star branch wiring causes mis-address setting. (Fig. 1-17)
Outdoor unit
NO
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches that are less than 1 m are not included in the total branch number.) (Fig. 1-18)
Branch
Point
16 or fewer
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit Indoor unit
more than 1 m
Indoor unit Indoor unit
more than 1 m
Indoor unit
less than 1 m
Indoor unit
Outdoor unit
Prohibited
Indoor unit Indoor unit
NO
Indoor unit
Indoor unit
Branch point
Outdoor unit
Indoor unit
Indoor unit
1-139
Prohibited
Indoor unit
Fig. 1-16
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Fig. 1-17
Outdoor unit
Indoor unit
Indoor unit
Fig. 1-18
1