Sanyo ECO-i AHX0752 Technical Data Manual page 36

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
1
wiring. Star branch wiring causes mis-address setting. (Fig.
3-2)
2
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. 3-3)
4
5
16 or fewer
6
7
8
Outdoor unit
Indoor unit
Outdoor unit
NO
Outdoor unit
Indoor unit
Branch
point
Indoor unit
more than 3.3 ft
Indoor unit
less than 3.3 ft
Indoor unit
Design of W-3WAY ECO-i SYSTEM Unit Specifi cations
Prohibited
Indoor unit
Fig. 3-1
Indoor unit Indoor unit
Indoor unit Indoor unit
Branch point
Fig. 3-2
Outdoor unit
Indoor unit
more than 3.3 ft
Indoor unit
Fig. 3-3
2-26
Outdoor unit
Prohibited
Indoor unit Indoor unit
Outdoor unit
NO
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit Indoor unit
Indoor unit Indoor unit