22 Room Air Conditioner
Connecting the Cables
1. Remove the cover control from the unit by
loosening the 3 screws.
2. Dismount caps on the conduit panel.
3. Temporarily mount the conduit tubes on the
conduit panel.
4. Properly connect both the power supply and
low voltage lines to the corresponding
terminals on the terminal block.
5. Ground the unit in accordance with local
codes.
6. Be sure to size each wire allowing several
inches longer than the required length for
wiring.
7. Use lock nuts to secure the conduit tubes.
Connector trade size for this unit is
1/2"(12.7mm).
Refer to "How to connect wiring to the
terminals" for instructions on connecting
depending on the wire type you are using.
WARNING:
• Be sure to comply with local codes
while running the wire from the
indoor unit to the outdoor unit(size
of wire and wiring method, etc).
• Every wire must be connected
firmly.
• No wire should be allowed to touch
refrigerant tubing, the compressor
or any moving parts.
Power Supply
NOTICE
1
Indoor Unit
Outdoor Unit
2
3
4
1
2
3
4
5
6
G
To
branch
circuit
Ground
Power supply a
L1
*
L2
Connecting cable(Low voltage)
b
Terminal
(4P)
Terminal
(6P)
Wiring Diagram
*
L1 is neutral for 115V models.
Outdoor unit
Terminal block
Over 5mm
(2")
Cover control
Conduit panel
Connecting
cable
Power supply
cord
1.
shows field wiring.
2. Separately wire the high and low voltage line.
3. Use heat-proof electrical wiring capable of
withstanding temperatures up to 167°F(75°C).
4. Use outdoor and waterproof connection cable
rated more than 300V for the connection
between indoor and outdoor unit.
(For example, Type SJO-WA)
NOTICE
Model
18K
1Ø, 208/230V
14
18
20A
Power
source
Fuse or breaker
Capacity
AWG(MIN)
Installation
