Sanyo ECO R410A Installation Instructions Manual page 35

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 wir-
ing. Star branch wiring causes misaddress setting. (Fig. 4-2)
Outdoor unit
NO
(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)
Branch
point
16 or fewer
Outdoor unit
Indoor unit Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit
more than 3.3 ft.
Indoor unit
more than 3.3 ft.
Indoor unit
less than 3.3 ft.
Indoor unit
Outdoor unit
Prohibited
Indoor unit
Fig. 4-1
Indoor unit
Indoor unit
Branch point
Fig. 4-2
Outdoor unit
Indoor unit Indoor unit
Indoor unit Indoor unit
Fig. 4-3
35
Prohibited
Indoor unit
Outdoor unit
Indoor unit
Indoor unit