YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
YMGI: Your Modern Green Idea
38
WIRING OUTDOOR UNIT
CONNECT WIRING BETWEEN OUTDOOR UNIT AND INDOOR UNIT
Check the nameplate for rated electrical data. Connect unit to the correct electrical power source.
Select power wire of proper type and size. YMGI suggests using UL approved 105°C / 221°F multi-strand copper wire
for outdoor use. Refer to the following tables, for proper selection of wire gauge, size and circuit breaker.
Comparison of the Standards of Electric Conductor Cross Section Area (Diameter of Wire),
Power Switch, Fuse and Load Current
Special power distribution equipment and
electric wire for the air conditioner
Power distribution equipment and electric wire
for the power bus
Air
conditioner’s
maximum current
(A)
Electric
conductor
’s
cross-sectional
area(m
2
)
Standard spec
(A) of the socket
or power of the
switch /fuse.
C
ircuit’s
maximum current
× (1.5 to 3 times)
(A)
Electric
conductor
’s
cross sectional
area (m
2
)
Standard spec
(A) of the power
switch / the fuse
≦
10
1 or 1.5
16/16
≦
16
1.5
～
4
32/25
≦
16
1.5 or 2.5
32/25
≦
25
2.5
～
4
63/50
≦
25
2.5 or 4
63/50
≦
32
4
～
10
63/50
≦
32
4 or 6
63/50
≦
40
6
～
16
100/80
≦
63
10
～
25
125/125
The maximum electric current of the solar air conditioner refers to the maximum input electric current, which is printed on
the label of the indoor unit. The maximum electric current of the circuit refers to the total amount of electric current, which
comprises the maximum electric current of the solar air-conditioner and all other appliances that are on the same circuit.
Securely connecting the electrical lines of solar air conditioner
1. Power cord of indoor and outdoor units should not use polyvinyl chloride (PVC). Wires must use chloroprene
rubber wires (including high-tension signal wires). A licensed HVAC technician can lengthen or shorten electrical
wiring. Do NOT attempt to lengthen or shorten the wires by yourself.
2. The ground wire must use green with yellow stripe wires that are adequately sized. The ground wire should never
be connected to water, coal or gas pipes. Do not use an overhead ground wire.
3. When connecting wires, please refer to the electric circuit diagram in the unit, and make sure each connection is
correct.
Solar Air Conditioner Installation
1. Reclaim any refrigerant that is in the refrigeration lines. Pull air from the lines using a vacuum pump.
2. Installation height difference of the Indoor unit and the Outdoor unit should be less than 16 ft.
3. The length of the pipe, which connects the Indoor unit and the Outdoor unit, should be less than 32ft.
4. The refrigerant filling amount of the solar air conditioner should be adjusted according to the length of the pipe (L).
The refrigerant increment G= (L- length of the standard pipe) x 30(0.3225 oz./ft.).
Connection of the Power Supply of the Outdoor Units
Open the outlet box of the outdoor unit; connect the triple core wire and the twin core wire with the five jacks of the
connecting terminals in accordance with their colors, as shown in the following table.
The connection method of the triple core wire of the auxiliary electric heating pipe, located on the insulating barrel, the
blue wire is connected to terminal board (N), the brown wire is connected with terminal board slot 3, and the green with
yellow stripe wires are connected to the terminal board ground.
The Terminal Board Base on
the Outdoor Units
+
-
N
3
2
1
F
V
The Color of Wire Connected
With the Indoor Unit
RED
BLACK
Blue
Brown
Blue
Brown
Blue
Blue
