39
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.
o
Connect the UL listed or CSA approved
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.
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.
1
2
3
1
2
L1
L2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
Outdoor Unit
Unit A
Unit B
Unit C
Unit D
Terminal
Terminal
Terminal
Terminal
Terminal
Indoor
Unit A
Disconnect
Switch
Field supply
Grounding wire
Power Supply
Single Phase
208/230V 60Hz
min AWG12
Grounding wire min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
Grounding wire min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
Grounding wire min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
Grounding wire min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
Indoor
Unit B
Indoor
Unit C
Indoor
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***
Unit D
Unit C
Unit A
Unit B
Indoor & Outdoor connection cable
Power Supply Cord
Isolating
Devices
Indoor
Unit A
Indoor
Unit D
Indoor
Unit B
Indoor
Unit C
Lock
Nuts
Top panel
Connectors
Plug
Rear panel
Knock Out
Holes
Wire stripping
(gap between wires)
No loose strand when
inserted
Indoor/outdoor
connecting
terminal board
•
Ground wire shall be Yellow/
Green (Y/G) in colour and longer
than other AC wires for safety
reason.
13
/
32
"±
1
/
16
"
(1
0±1m
m
)
Conductor fully
inserted
Conductor over
inserted
Conductor not
fully inserted
ACCEPT
PROHIBITED
PROHIBITED
WIRE STRIPPING AND CONNECTING REQUIREMENT
7
/
32
" (5 mm)
or more
This equipment must be
properly earthed.
