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61
English
INSTALLATION PARTS
Gas leak tests on the outdoor unit is done initially from the factory, but you must test for gas leakage after
the installation.
1 Purge the pipe and run vacuum test. (Pressure should not increase for a minute.)
2 Insert the nitrogen gas so that pressure reaches minimum 2kg/cm2.
3 Use soap water to check the leakage on the connection part.
4 For final vacuum test, leave the outdoor unit for 24 hours under pressure of 28kg/cm2 and check for any
signs of pressure decrease.
5 Discharge the nitrogen gas.
6 Keep the outdoor unit in vacuum status.
7 If length of the pipe exceeds the standard length, charge additional refrigerant.
8 Open the outdoor unit valve and circulate the refrigerant to the indoor unit so that pressure of the entire
pipe becomes even.
Gas leak test and vacuum drying
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