Electrical connections
WARNING
1. Before obtaining access to terminals, disconnect all electrical supply circuits.
2. Failure to follow these instructions could lead to death or serious injury. Wiring installed improperly
poses danger of fire and electrocution. In the case of high voltage connections, it is recommended to
use flexible conduit when the transmission of vibrations could create noise problems to the structure
of the building. To avoid such dangers, follow the wiring installation and grounding requirements
stipulated by NEC (National Electric Code) as well as by local and state electric codes. All field wiring
must be performed by qualified and authorized personnel.
Notes:
1. EACH unit must be installed with an individual power source. This power source must be sized
correctly according to the capacity of the unit being installed.
2. Voltage classification is shown in the table appearing on page 25.
3. Before applying the energy, verify that voltage is found in the range of 187~252 V (for one-phase units
voltage should be 208/230 V).
4. Always use a grounded terminal and install a proper receptacle to supply energy to the air
conditioning unit. In the case of high voltage connections, it is recommendable to use flexible electric
conduit when the transmission of vibrations could create noise problems to the structure of the
building.
24
Wall Unit
1. Remove wiring fastener and connect the power cable and control cable terminals following
their color coding.
2. Connect cables to the terminal strips and ensure proper adjustment.
Outdoor unit wiring connections
34
Installation of outdoor unit
Step four: connect indoor and outdoor pipes
1. Remove the screw on the right han-
dle of outdoor unit and then remove
the handle.
2. Remove the screw cap of valve and
aim the pipe joint at the bellmouth of
pipe.
3. Pretightening the union nut with
hand.
4. Tighten the union nut with torque
wrench by referring to the sheet
below.
handle
screw
gas pipe
liquid pipe
liquid
valve
gas valve
union nut
pipe joint
Hex nut diameter Tightening torque
(N.m)
Φ 6
Φ 9.52
Φ 12
Φ 16
Φ 19
30~40
4
5~55
60~65
70~75
15~20
1. Remove the wire clip; connect the power connection wire and signal control
wire (only for cooling and heating unit) to the wiring terminal according to the
Note: the wiring board is for reference only, please refer to the actual one.
Indoor unit connection
2
3
N(1)
L
N
POWER
white(blue)
white
(blue)
black(brown)
red
(brown)
black
yellow-
(
green
)
green
yellow-
(
green
)
green
L
N
Indoor unit connection
yellow-green
N(1)
2
3
L
N
L
N
POWER
brown
blue
brown
(black)
yellow-
green
blue black
09K
、
12K(115V):
18K
、
24K:
Indoor unit connection
green
(
yellow-green)
N(1)
2
3
L
N
L
N
POWER
red
(brown)
black
white
(blue)
(brown)
green
(yellow-
green)
white
(blue)
black
09K
、
12K(220V):
Summary of Contents for 4MXW1609A1
Page 13: ...13 Wall Unit 18K 30K 36K ...
