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 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. 5-1)

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Prohibited

Indoor unit

 

Indoor unit

 

 

 

Fig. 5-1

Prohibited

Indoor unit

(3)Do not install inter-unit control wiring such as star branch wir- ing. Star branch wiring causes mis-address setting. (Fig. 5-2)

Outdoor unit

 

Indoor unit

 

 

 

NO

Indoor unit

 

Fig. 5-2

 

 

Outdoor unit

NO

 

 

Indoor unit

 

 

 

Indoor unit

 

Indoor unit

 

 

 

 

 

Indoor unit

 

Indoor unit

 

 

 

Branch point

 

(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. 5-3)

Outdoor unit

Outdoor unit

Outdoor unit

Indoor unit

Branch point

Indoor unit

16 or fewer

more than 3.3 ft.

Indoor unit

more than 3.3 ft.

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

less than 3.3 ft.

Indoor unit

Fig. 5-3

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Sanyo XMHX1852, XMHX1252, CHDZR09053, CHDZR14053, 85464369098000 installation instructions Outdoor unit Indoor unit