Piping can be installed
in one of four different
layouts.
Figure 55: Removing the Refrigerant Piping Connection Cover
(LUU097HV, LUU127HV).
Figure 56: Removing the Refrigerant Piping Connection Cover
(LUU187HV, LUU247HV).
Figure 57: LUU097HV, LUU127HV, LUU187HV, LUU247HV Refrigerant
Piping Connections.
Single Zone Cassette Outdoor Unit Connections
1. Remove the connection cover from the unit by loosening the screws.
2. Align the center of the refrigerant pipe and corresponding connection.
3. Place a couple of drops of refrigerant oil on the opening rim of the flare before assembling. Ensure you do not add any contaminants.
Tighten the flare nut initially by hand.
4. Finish tightening the flare nut with a torque wrench until the wrench clicks. See page 70 for torque information.
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
Connection cover
Figure 58: LUU367HV, LUU427HV Refrigerant Piping Connections.
Tubing cover
When tightening the are nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
Refrigerant Piping System Layout
INSTALLATION & LAYOUT BEST PRACTICES
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
FOUR-WAY CASSETTE | 69
Refrigerant Piping Design and Best Practices
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