Wiring System Diagrams - Panasonic S-12MY2U6 Installation Instructions Manual

4-3. Wiring System Diagrams

Power supply L1
208/230V, 60Hz, 1PH L2
Ground
Remote
controller
WHT
1 1
BLK
2 2
L1
Power supply
L2
208/230V, 60Hz, 1PH
Ground
Remote
controller
WHT
1 1
BLK
2 2
Group control:
Power supply
L1
208/230V, 60Hz, 1PH
L2
Ground
NOT E
(1) Refer to Section "4-2. Recommended Wire Length and Wire
Diameter for Power Supply System" for the explanation of
"A", "B" and "C" in the above diagram.
(2) The basic connection diagram of the indoor unit shows the
terminal boards, 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 R.C. address setting, refer to the installation
instructions supplied with the outdoor unit. Auto address
setting can be executed by remote controller automatically.
(5) Ensure that the ground shield cable for inter-unit control
wiring between outdoor and indoor units should be
connected to the outdoor unit.
(6) For the inter-unit control wiring between the indoor units, be
sure to connect between the shield.
Then connect it to the shield of inter-unit control wiring
between outdoor and indoor units.
(7) Ensure that the ground shield cable for a remote controller
should be connected only to the indoor unit.
Indoor
unit (No. 1)
*
L1
L2
U1
U2
Ground
Ground
B
R1
R2
A
Indoor
unit (No. 2)
*
Ground
L1
L2
U1
U2
Ground
B
Ground
R1
R2
Indoor
A
unit (No. 3)
*
L1
Ground
L2
U1
C
U2
R1
R2
Ground
Ground
A
Outdoor unit
INV unit
Ground
A
L1
U1
L2
U2
L3
1
2
Inter-outdoor unit control wiring
Outdoor unit
INV unit
L1
L2
1 L3
2
* NOTE:
Disconnect Switch may be needed by the National/
Local code.
ALWAYS COMPLY WITH NATIONAL AND
CAUTION
LOCAL CODE REQUIREMENTS.
Power supply
10
*
L1
Power supply
L2
208/230V, 60Hz, 3PH
L3
Ground
*
L1
Power supply
L2
208/230V, 60Hz, 3PH
L3
Ground
* Disconnect switch
(Field Supply)
Terminal Board
Inter-unit Remote control
control wiring wiring
Y2 Type
Fig. 4-1
Fig. 4-2