4-3. Wiring System Diagrams - Panasonic U-4LE1E5 Installation Instructions Manual

CAUTION
(1) When linking outdoor units in a network, disconnect the terminal extended from the short plug (CN-TERMINAL, 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. 4-1)
Outdoor unit
Indoor unit
(3) Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address 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. 4-3)
Branch
Point
16 or fewer
(5) Use shielded wires for inter-unit control wiring (c) and
ground the shield on both side, otherwise malfunction
from noise may occur. (Fig. 4-4) Connect wiring as
shown in Section "4-3. Wiring System Diagrams".
Ground
(6) Use the standard power supply cables for Europe
(such as H05RN-F or H07RN-F which conform to
CENELEC (HAR) rating specifications) or use the
cables based on IEC standard. (code designation,
60245 IEC 57, 60245 IEC 66)
AMP Air Conditioning
Outdoor unit
Indoor unit
Outdoor unit
NO
Outdoor unit
Indoor unit
more than 1 m
Indoor unit
more than 1 m
Indoor unit
less than 1 m
Indoor unit
Shielded wire
Ground
Outdoor unit
Prohibited
Indoor unit Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Indoor unit Indoor unit
Indoor unit Indoor unit
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.
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 fixing screw of the terminal
plate.
Fig. 4-4
18
www.ampair.co.uk | sales@ampair.co.uk
Prohibited
Indoor unit
Indoor unit
Indoor unit
Branch point
Outdoor unit
Indoor unit
Indoor unit
Fig. 4-1
Fig. 4-2
Fig. 4-3