12
7 ELECTRIC WIRE DIAGRAM
Fig 7.1
indoor
unit
N
L
L
N
L
N
S
Outdoor
unit
Power Supply
220-240V
~ 50Hz
Indoor unit
power wire
Outdoor unit
power wire
indoor
unit
L
N
Outdoor
unit
Indoor unit
power wire
Outdoor unit
power wire
L
N
P
Q
E
X
Y
E
53/71
90-160
Pay attention to the phase sequence of the power supply. If the
phase sequence is reversed, the compressor will not start.
Meanwhile, the fault indicator of the outdoor electric control
board will light up. For details, see outdoor unit wring diagram
on the cover plate of the electric control box .
After shifting the phase sequence, power on the unit until the
fault indicator goes out and the compressor starts up normally.
For t he mo d e l 32 , 53 and =, it is n e cce ss a ry t o i nsta ll a
Time-delay relay on the electric wire to prevent the compressor
with frequent start-stop, refer to Fig 7.1. It is recommended to
set about 10~15 minute delay on the Time-delay relay.
NOTE
8 TRIAL RUN
Please conduct in accordance with “Trial Run Tenor Nameplate”
on the electric control box.
Perform trial run only after all installations are finished.
Confirm the following issues before trial operation, and the
box for the confirmed items.
Perform the trial run only after the outdoor unit has been
powered on for over 12 hours.
Check that all valves are opened before trial run.
Check the electric safety before trial run.
Do not perform compulsory operation in any way.(It is very
dangerous if the protection device is not active)
Check whether the indoor unit and the outdoor are
installed properly.
Check whether the piping and wiring are correct.
Check whether the refrigerant pipeline system is
inspected for leakage.
Check whether the drain is smooth.
Check whether the heat insulation is perfect.
Check whether the ground cables are connected
correctly.
Check whether the pipe length and the refrigerant
amount are recorded.
Check whether the supply voltage is equal to the rated
voltage of the air conditioner.
Check whether any obstacles exist at the air
inlet/outlet of the indoor or outdoor unit.
Open the gas valve and the liquid valve.
Connect the power supply to preheat the air
conditioner.
CAUTION
P
Q
E
Power Supply
220-240V
~ 50Hz
Power Supply
220-240V
~ 50Hz
S
Central controller
Power
Supply
indoor
unit
remote
controller
The communication wire should be 3-core
shielding wire, and the sheilding wire
layer must be connected the earth of sheet metal.
(Optional)
