Wiring System Diagrams - Panasonic S-12MT2U6 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
Power supply
L1
208 / 230V, 60Hz, 1PH L2
Ground
Remote
Controller
WHT
1 1
BLK
2 2
Group control:
Power supply
L1
208 / 230V, 60Hz, 1PH
L2
Ground
NOTE
(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 6P 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 R.C. address setting, refer to the installation
instructions supplied with the remote controller (optional).
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
Ground U2
B
Ground
R1
R2
Indoor
A
unit (No. 3)
*
Ground
L1
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
LOCAL CODE REQUIREMENTS.
6P terminal board
L1 L2 U1
Power Inter-unit
supply control
Type T2
12
*
L1
Power supply
L2
208 / 230 V, 60Hz, 3PH
L3
Ground
*
L1
Power supply
L2
208 / 230 V, 60Hz, 3PH
L3
Ground
* Disconnect switch
(Field Supply)
U2 R1 R2
Remote
control
wiring wiring
Fig. 4-1
Fig. 4-2