Instructions / Assembly

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·Wrap tape material along the wire and seal wiring holes, to prevent entrance of condensed water and insects.
·Tightly secure the power source wiring using the cord clamp inside the unit.
Note: Fix the rubber bushes with adhesive when conduit tubes to the outdoor unit are not used.
General Check
(1) Make sure that the field-selected electrical components (main power switches, circuit breakers, wires, conduit
connectors and wire terminals) have been properly selected according to the electrical data.
Make sure that the components comply with National Electrical Code (NEC).
(2) Check to ensure that the voltage of power supply is within +10% of nominal voltage and earth phase is contained in the
power supply wires. If not, electrical parts can be damaged.
(3) Check to ensure that the capacity of power supply is enough.
If not, the compressor will be not able to operate due to abnormal voltage drop at startup .
(4) Check to ensure that the earth wire is connected.
(5) Install a main switch, multi-pole main switch, with a space of 0.14 in. (3.5mm) or more, single -phase main switch with a
space of 0.12 in. (3.0mm) or more between each phase.
(6) Check to ensure that the electrical resistance is more than 2 MΩ, by measuring the resistance between ground and the
terminal of the electrical parts. If not, do not operate the system until the electrical leakage is located and repaired.
·Turn OFF the main power switch to the indoor unit and the outdoor unit, and wait for at least 3 minutes before electrical
wiring work or a periodical check is performed.
·Check to ensure that the indoor fan and the outdoor fan have stopped, before electrical wiring work or a periodical check is
performed.
·Protect the wires, electrical parts, etc. from rats or other small animals. If not protected, rats may gnaw at unprotected
parts and in the worst-case scenario, a fire will occur.
·Prevent the wirings from touching the refrigerant pipes, plate edges, and electrical parts inside the unit.
If not done so, the wires will be damaged and in the worst-case scenario, a fire will occur.
·Install an ELB (Electric Leakage Break) at the power source.
If an ELB is not used, it can cause electric shock or fire at the worst-case scenario.
·This unit uses an inverter, which means that it must use an earth leak detector capable of handling harmonics in order to
prevent malfunctioning of the earth leak detector itself.
·Do not use intermediate connection wires, stranded wires(see Attentions when Connecting the Power Supply Wiring),
extension cables or control line connection, as the use of these wires may cause unwanted heat, electric shock, or fire.
·The tightening torque of each screw shall be as follows.
M4: 0.7 to 1.0 lbf·ft. (1.0 to 1.3 N·m)
M5: 1.5 to 1.8 lbf·ft. (2.0 to 2.5 N·m)
M6: 3.0 to 3.7 lbf·ft. (4.0 to 5.0 N·m)
M8: 6.6 to 8.1 lbf·ft. (9.0 to 11.0 N·m)
M10: 13.3 to 217 lbf·ft. (18.0 to 23.0 N·m)
Keep the above tightening torque values in mind when performing wiring work.
WARNING
CAUTION
Installation Instructions
Wiring
Outdoor Unit Model
Low
18K-24K
18K
30K-36K
30K
42K-48K
42K
48K-60K
48K
Capacity Set
Configure the S5 dip switch to set the desired capacity of the system
according to the below table.
S4 DIP switch setting
Factory

Setting
Factory
Setting
ON
ON
ON
ON
1
1
1
2
2
2
3
3
3
4
4
4
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
PumpDown
Switch
Forced
Defrost
CoolingOnly
S5 DIP switchsetting
Capacity
Hi Low
DIP Switch Setting of Outdoor Unit (Optional setting)
1. Turn on all power sources before setting. Without turning on
, the switches settings are not refreshed
and might be invalid. (24K/36K)
2.
Turn off all power sourc
es before setting. Without turning off, the s
witches settings are not refreshed and
might be invalid.(48K/60K)
rk of " " indicates the position 3.
MaMark of "rk of "
High (Default)
24K
36K
48K
60K