Panasonic CU-3E19RBU-5 Service Manual page 49

10.2.5 Connect The Cable To The Outdoor Unit
1. Remove Plugs.
2. Fix the conduit connectors to the knock out
holes with lock-nuts, then secure them.
3. Connecting wire between indoor unit and
outdoor unit should be UL listed or CSA
approved 4 conductor wires minimum AWG16
in accordance with local electric codes.
4. Wire Connection to the power supply
(208/230V 60Hz) through circuit breaker.
Connect the UL listed or CSA approved
o
wires minimum AWG12 to the terminal
board, and connect to other end of the
wires to circuit breaker.
5. Connect the power supply cord and
connecting wires between indoor unit and
outdoor unit according to the diagram as
shown.
Lock
Nuts
6. For wire stripping and connection requirement, refer to the diagram below.
7. Secure the power supply cord and connection cables onto the control board with the holder.
8. Fix the cabinet side plate (metal) back to the original position with screws.
WIRE STRIPPING AND CONNECTING REQUIREMENT
Wire stripping
No loose strand when
inserted
Top panel
Plug
Knock Out
Holes
Rear panel
Indoor/outdoor
connecting
terminal board
7
/ " (5 mm)
32
or more
(gap between wires)
Terminal
1
2
Indoor
3
Unit A
Terminal
1
2
Indoor
Unit B 3
Terminal
1
Indoor 2
Unit C
3
Terminal
1
2
Indoor
3
Unit D
Each indoor unit must have its own conduit for the
wires between the indoor and outdoor unit but the
power supply for the outdoor unit must be in a separate
conduit to prevent potential communication problems.
CU-4E24***
Connectors
Power Supply Cord
Conductor fully Conductor over
inserted inserted
ACCEPT PROHIBITED
49
Outdoor Unit
Terminal
208/230V min AWG16
1
208/230V min AWG16
2
208/230V min AWG16
Unit A
3
Grounding wire min AWG16
208/230V min AWG16
1
208/230V min AWG16
2
208/230V min AWG16
Unit B
3
Grounding wire min AWG16
208/230V min AWG16
1
208/230V min AWG16
2
208/230V min AWG16
Unit C
3
Grounding wire min AWG16
208/230V min AWG16
1
208/230V min AWG16
2
208/230V min AWG16
Unit D
3
Grounding wire min AWG16
L1
L2
Unit A Unit B Unit C
Unit D
Indoor & Outdoor connection cable
Isolating Indoor Indoor Indoor
Devices Unit A Unit D Unit B
This equipment must be
properly earthed.
•
Ground wire shall be Yellow/
Conductor not
Green (Y/G) in colour and longer
fully inserted
than other AC wires for safety
reason.
PROHIBITED
Disconnect
Switch
Field supply
Power Supply
Single Phase
208/230V 60Hz
Grounding wire
min AWG12
Indoor
Unit C