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MULTI V Ceiling Cassette Indoor Units
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.
REFRIGERANT PIPING
13.0 - 18.0
24.6 - 30.4
39.8 - 47.7
ightening Torque for Flare Nuts.
Tightening the Flare Nuts
1. When connecting the flare nuts, coat the flare (outside only) with polyvinyl ether (PVE) refrigeration oil only.
2. Initially hand tighten the flare nuts using three (3) or four (4) turns.
3. To finish tightening the flare nuts, use both a torque wrench and a backup wrench.
4. After all the piping has been connected and the caps have been tightened, check for refrigerant gas leaks.
Loosening the Flare Nuts
Always use two (2) wrenches to loosen the flare nuts.
Do not use polyolyester (POE) or any other type of mineral oil as a thread lubricant. These lubricants are not compatible with the PVE oil
used in this system and create oil sludge leading to equipment damage and system malfunction.
Pipe Size (in. O.D.) Tightening Torque (ft-lbs.)
1/2
1/4
5/8
3/8
3/4
Outside Diameter (mm)
6.35
9.52
12.7
15.88
19.05
45.4 - 59.3
71.5 - 87.5
Do not add any contaminants inside the refrigerant piping.
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