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INSTALLATION INSTRUCTIONS
AIR EVACUATION
Preparations and Precautions
Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage the
air conditioner, reduce its effi ciency and cause injury. Use a vacuum pump and manifold gauge to evacuate
the refrigerant circuit, removing any non-condensible gas and moisture from the system.
Evacuation should be performed upon initial installation and when the unit is relocated.
Before performing the evacuation:
• Check to make sure that both the high pressure and low pressure pipes between the indoor and outdoor
units are installed correctly.
• Check to make sure all wiring is connected properly.
Evacuation Instructions
Before using the manifold gauge and vacuum pump, read their operation manuals to ensure they are used
correctly.
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