20
CAUTION
(1) When linking the outdoor units in a network, disconnect the terminal extended from the short plug from all outdoor units
except any one of the outdoor units.
(When shipping: In shorted condition.)
For a system without link (no wiring connection 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. 4-3)
Outdoor unit
Outdoor unit
Outdoor unit
Prohibited
Prohibited
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Fig. 4-3
(3)
Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address setting. (Fig. 4-4)
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Branch point
NO
NO
Fig. 4-4
(4)
If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches that are less than 1 m are not included in the total branch number.) (Fig. 4-5)
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
more than 1 m
less than 1 m
16 or fewer
Branch
Point
more than 1 m
Fig. 4-5
(5) Use shielded wires for inter-unit control wiring (c) and
ground the shield on both sides, otherwise misoperation
from noise may occur. (Fig. 4-6)
Connect wiring as shown in Section “4-3. Wiring System
Diagrams”.
WARNING
Loose wiring may cause the terminal to overheat or result
in unit malfunction. A fire hazard may also occur. Therefore,
ensure that all wiring is tightly connected.
Shielded wire
Ground
Ground
When connecting each power wire to the terminal, follow the
instructions on “How to connect wiring to the terminal” and fasten
the wire securely with the terminal screw.
Fig. 4-6
(6)
Use the standard power supply cables for Europe (such as
H05RN-F or H07RN-F which conform to CENELEC (HAR)
rating speci
fi
cations) or use the cables based on IEC
standard. (245 IEC57, 245 IEC66)
P07-T11630.indb 20
P07-T11630.indb 20
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Summary of Contents for S-100PN1E5A
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