LG Electronics LA180HYV3 User Manual

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Single Zone Art Cool Premier Wall Mounted Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

FINAL INSTALLATION PROCEDURES

Triple Evacuation Procedure

After the leak / pressure check is complete, it is a best practices recommendation that a triple evacuation procedure is performed to the

refrigerant piping and the connected indoor unit. Triple evacuation must be performed through the gas (vapor) suction Schrader port on the

outdoor unit service port.

The deep evacuation procedure is required for Single Zone systems. The triple evacuation procedure is a best practices recommendation for Single

Zone systems.

For faster evacuation, the Schrader core can be removed, and an auxiliary service port can used. Make sure to re-install the original Schrader core

before operating the system.

• Evacuate through just the gas (vapor) suction Schrader port on the outdoor unit service port.

• The outdoor unit service valves must remain closed and the stem head access caps tight.

Do not open the outdoor unit service valves

and release the factory refrigerant charge until trim charge is complete, and the system is ready to operate.

• Any field-installed ball valves in the refrigerant system (if used) must be open to ensure all piping is free and clear for evacuation on all pip-

ing and connected indoor unit.

• Never perform evacuation using refrigerant.

• Use only a vacuum pump that can reach 500 microns, vacuum rated hoses or copper tubing, and a leak-free gauge manifold set.

• Use only new vacuum pump oil from a properly sealed (unopened) container, and change oil in pump before EVERY use.

• Subsequent oil changes will be necessary after several hours of continuous operation; have extra oil on hand.

• Use a quality micron gauge in good operating order and install as far away from pump as possible.

Deep Evacuation Procedure, continued.

2. Connect the gauge manifold along with the vacuum pump to the gas (vapor) suction Schrader

port (with core removed) using a vacuum hose. Open the gauge manifold and the vacuum

pump valves.

3. (YDFXDWHWRVWDWLFPLFURQOHYHOIRUDWOHDVWRQHKRXU

4. 0LFURQOHYHOPXVWUHPDLQIRUWZRKRXUV,IWKHYDFXXPJDXJHULVHVDQGVWRSVWKH

system may contain moisture; therefore, it will be necessary to repeat the steps of vacuum

break and drying.

5. After maintaining the system in vacuum for two (2) hours, check if the vacuum gauge rises or

not. If it doesn’t rise, then the system is properly evacuated.

6. Close the manifold gauge.

7. Shut the valves before turning off and disconnecting the vacuum pump.

Deep Evacuation / Triple Evacuation Procedure

Figure 110: Evacuation Procedure Diagram.

Gauge Manifold

Micron Gauge

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