Panasonic S-M20PY3E Installation Instructions Manual page 26

■ 3-LINE CONNECTION
Example : Single connection
Indoor unit
L/1
N/2
3
U1
Remote
U2
controller
1 R1
2
R2
D
Indoor unit
L/1
N/2
3
U1
Remote U2
controller
1
R1
2
R2
D
Indoor unit wiring sample
Connection cable between outdoor
and indoor unit
To outdoor unit (1, 2, 3)
To integrated control system
To remote controller (1, 2)
*1 Fasten tightly.
* Single-phase model connections
Outdoor unit
(single-phase)
L
G
N
1
2
3
C
Integrated control system
* 3-phase model connections
Outdoor unit
(3-phase)
G
L1
L2
L3
N
1
2
3
C
Integrated control system
Earth wiring:
Make the earth wiring 25 - 30 mm longer than
connecting wires to L/1, N/2, 3.
Power supply
220-230-240V~ 50Hz
L
N
Ground
Power supply
380-400-415V 3N~ 50Hz
L1
L2
L3
N
Ground
* 1
Clamper
(supplied)
Clamping Clip
26
* Single-phase model connections
Outdoor unit
(single-phase)
Power supply
220-230-240V~ 50Hz
F
L
N
1
2
3
Use this screw when connecting the shield
for the Inter-unit control wiring to ground.
( : Functional earthing)
Integrated control wiring
Remote control wiring
L
N
Ground