Sanyo R410A - Page 30

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(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 connection wir-
ing 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 Outdoor unit Outdoor unit
Prohibited
Prohibited
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
Fig. 4-1
CAUTION
(3) Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address setting.
(Fig. 4-2)
Outdoor unit Outdoor unit Outdoor unit
Indoor unit Indoor unit Indoor unit Indoor unit
Indoor unit
more than 3.3 ft.
more than 3.3 ft.
Branch
point
16 or fewer
Indoor unit
Indoor unit Indoor unit Indoor unit
less than 3.3 ft.
Indoor unit
Outdoor unit Indoor unit Indoor unit
Indoor unit Indoor unit
NO
Branch point
Fig. 4-2
Fig. 4-3
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches less than 3.3 ft. are not included in the total branch number.) (Fig. 4-3)
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