4-2. Recommended Wire Length And Wire Diameter For - Panasonic U-4LE1E5 Installation Instructions Manual

(8) To prevent malfunction of the air conditioner caused by electrical noise, care must be taken when wiring as follows:
●
The remote control wiring and the inter-unit control wiring should be wired apart from the inter-unit power wiring.
●
Use shielded wires for inter-unit control wiring between units and ground the shield on both sides.
(9) If the power supply cord of this appliance is damaged, it must be replaced by a repair shop appointed by the manufacturer,
because special purpose tools are required.
4-2. Recommended Wire Length and Wire Diameter
for Power Supply System
Outdoor unit (Single-phase)
(A) Power supply
Wire size
U-4LE1E5 4 mm 2
2
U-5LE1E5 6 mm
2
U-6LE1E5 6 mm
Outdoor unit (3-phase)
(A) Power supply
Wire size
2
U-4LE1E8 2.5 mm
2
U-5LE1E8 2.5 mm
U-6LE1E8 2.5 mm 2
4-3. Wiring System Diagrams
Power supply L
N
220 – 240V ~50/60Hz
Ground
Remote
controller
WHT
1 1
BLK
2 2
L
Power supply
N
220 – 240V ~50/60Hz
Ground
Remote
controller
WHT
1 1
BLK 2 2
Group control:
L
Power supply
N
220 – 240V ~50/60Hz
Ground
L
Power supply
N
220 – 240V ~50/60Hz
Ground
Remote
controller
WHT
1 1
BLK
2 2
AMP Air Conditioning
Time delay capacity
Circuit
Max. length Fuse
breaker
21 m 25 A
24 m 35 A
20 m 35 A
Time delay capacity
Circuit
Max. length Fuse
breaker
58 m 20 A
49 m 20 A
41 m 20 A
Indoor unit
(No. 1)
L
N
B
U1
U2
D
Ground
R1
R2
Ground
C
Indoor unit
(No. 2)
Ground
L
N
B
U1
U2
D
R1
R2
Ground
C
Indoor unit
(No. 3)
L
N
Ground
B
E
U1
U2
R1
R2
Ground
C
Indoor unit
(No. n)
L
N
Ground
B
U1
U2
D
R1
R2
Indoor unit
Type
K1
D1, L1, U1, Y1, T1, F1, M1,
P1, R1
E1 (73, 106, 140)
30 A
40 A
Control wiring
40 A
(C) Inter-unit
(between outdoor
and indoor units)
control wiring
0.75 mm 2 (AWG #18)
Use shielded
wiring*
20 A
Max. 1,000 m
20 A
20 A
N OT E
* 1 With ring-type wire terminal.
Outdoor unit : single-phase model
C
U1
U2
In case of 3-phase power supply
Outdoor unit : 3-phase model
1 L1
L2
2
L3
Outdoor unit : single-phase model
2P terminal board
U1
L N
U1 U2
Power supply Inter-unit
control wiring
N OT E
(1) Refer to Section 4-2. "Recommended Wire Length
and Wire Diameter for Power Supply System" for the
explanation of "A", "B", "C", "D" and "E" in the above
diagrams.
(2) The basic connection diagram of the indoor unit shows
the 7P terminal board, so the terminal boards in your
equipment may differ from the diagram.
(3) Refrigerant Circuit (R.C.) address should be set before
turning the power on.
(4) Regarding the R.C. address setting, refer to Section 7-4.
"Auto Address Setting". Address setting can be executed
by remote controller automatically.
17
(B) Power supply Time delay fuse or
2.5 mm 2
Max. 150 m
Max. 130 m
Max. 60 m
(D) Remote control
wiring
0.75 mm 2 (AWG #18)
1
Max. 500 m
Power supply
220 – 240 V, single-phase, ~ 50 Hz
Ground
Power supply
L1
L2 380 – 415 V, 3-phase, ~ 50 Hz
L3
N
Ground
Outdoor unit : 3-phase model
4P terminal board
U2
L1 L2 L3
Power supply
Mini VRF System
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circuit capacity
10 – 16 A
10 – 16 A
10 – 16 A
(E) Control wiring for
group control
0.75 mm 2 (AWG #18)
Max. 200 m (Total)
U1 U2
N
U1 U2
Inter-unit
control wiring