Sanyo Big PACi 18 Series - Page 144

1
1-139
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)
Fig. 1-16
(3) Do not install inter-unit control wiring such as star branch wiring.
Star branch wiring causes mis-address setting. (Fig. 1-17)
Fig. 1-17
(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)
Fig. 1-18
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
Indoor unit
Indoor unit
Outdoor unit
Indoor unit
NO
NO
Branch point
Outdoor unit Outdoor unit Outdoor unit
Indoor unit Indoor unit Indoor unit Indoor unit
Indoor unitIndoor unit Indoor unit Indoor unit
Indoor unit
more than 1 m
Indoor unit
more than 1 m
less than 1 m
Branch
Point
16 or fewer
SM830161Book.indb139SM830161Book.indb139 2008/06/039:08:152008/06/039:08:15