Sanyo SPW-C1155DXHN8 Technical Data & Service Manual page 35

3. Electrical Wiring
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. 3-1)
Outdoor unit
Indoor unit
(3) Do not install inter-unit control wiring such as star branch
wiring. Star branch wiring causes misaddress 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. 3-3)
Branch
point
16 or fewer
Outdoor unit
Indoor unit Indoor unit
Fig. 3-1
Indoor unit
Indoor unit
Fig. 3-2
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
Fig. 3-3
2-25
Design of W-2WAY ECO-i SYSTEM Unit Specifications
Outdoor unit
Prohibited
Indoor unit
NO
Indoor unit
Indoor unit
Branch point
Outdoor unit
Indoor unit
Indoor unit
Prohibited
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
1
2
3
4
5
6
7
8