2-28
Design of 2WAY SYSTEM
1
2
3
4
5
6
7
8
9
3. Electrical Wiring
(1) When linking outdoor units in a network, disconnect the terminal extended from the short plug (CN072,
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.)
For a system without link (no connection 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. 2-2)
Outdoor unit
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
more than 1 m
more than 1 m
Branch
point
16 or fewer
Indoor unit
Indoor unit
Indoor unit
Indoor unit
less than 1 m
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
NO
Branch point
Outdoor unit
Outdoor unit
Outdoor unit
Prohibited
Prohibited
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
CAUTION
(3) Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes
misaddress
setting.
(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. 2-4)
Fig. 2-2
Fig. 2-3
Fig. 2-4
TD831159-04̲2WAY VRF.indb 28
TD831159-04̲2WAY VRF.indb 28
2014/08/25 16:51:43
2014/08/25 16:51:43