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FINAL INSTALLATION PROCEDURES
Installing Batteries, Test Run, Performance Evaluation
Installing Batteries into the Handheld Remote
Controller
For information on using the handheld remote controller, refer to its owner's manual.
1. The remote controller needs two AAA (1.5V) batteries for operation. Remove the battery
cover from the back of the remote controller by pushing downward on the tab at the top
of the battery cover, and then lift up to remove.
2. Insert the two new batteries.
• Align batteries by the (+) and (-) sides.
• The interior battery compartment of the remote controller will have clear markings for
the (+) and (-) placement.
3. Verify that the batteries have clicked into the compartment and are firmly engaged with
the contacts on either side of them.
4. Reattach the back cover of the remote controller.
5. Proceed with powering on the remote controller and use as needed. Remove the bat-
teries if system won't be used for an extended time.
Test Run
After all installation and testing procedures are complete, the system is ready for a test
run. Follow the guidelines below.
1. Check that all drain piping, refrigerant piping, and wiring / cables are properly con-
nected.
2. Check that both the gas (vapor) suction and liquid refrigerant piping service valves
are fully open.
3. Install the batteries into the handheld remote controller (see above).
4. Turn on the power to the outdoor unit, and press and hold press the ON / OFF but-
ton on the indoor unit for three (3) to five (5) seconds to test the system operation.
5. As the system is operating, make notes as needed to troubleshoot any issues that
might appear.
Performance Evaluation
Operate the unit in heating and / or cooling, depending on outdoor conditions, for 15 to 20
minutes, then check the system refrigerant charge (feature availability depends on model):
1. Measure the pressure of the gas (vapor) suction service valve. (After the performance
evaluation is complete, remove the hose, and securely tighten the outdoor unit service
valve cap with an adjustable wrench.) See optimum psig in table at right.
2. Measure the air temperature from both the inlets and outlets of the indoor unit.
3. Verify the difference between the inlet and outlet temperatures is ±14.4°F. If it is, the
system is functioning normally in cooling.
4. The air conditioner is now ready to use.
• If all modes can't be tested all at one time, testing must be performed later when weather
conditions permit.
• If the actual pressure is higher than shown, the system is most likely overcharged, and
charge must be removed. If the actual pressure is lower than shown, the system is most
likely undercharged, and charge must be added.
66
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Figure 120: Installing the Remote Controller
Batteries.
Battery Cover
Tab
Battery
Cover
1. Push down on tab
2. Lift cover
3. Insert
batteries
Figure 121: ON / OFF Button on the Indoor Unit
(Location Will Vary Depending on Model).
Figure 122: Performance Evaluation Measure-
ment Locations.
Inlet Temperature
Discharge
Air
Table 22: Gas Side Pressure at Optimum Condi-
tion When System is in Cooling.
Outside Ambient
Gas (Vapor) Service
Temperature
Valve Pressure
95°F
120~135 psig
3
ON / OFF
Discharge
Temperature
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