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49
Refrigerant Piping Connections
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 CONNECTIONS
Single Zone Wall Mount Outdoor Unit Connections
(090HEV, 090HXV, 120HEV, 120HXV)
1. Remove the tubing cover by loosening the fastening screws (Figure 51).
2. Align the center of the refrigerant pipe and corresponding
connection as shown in Figure 52.
3. Refer to Figure 51 for correct liquid and gas pipe attachment onto
outdoor unit.
4. 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.
5. Finish tightening the flare nut with a torque wrench until the wrench
clicks. Follow torque guidelines in Table 26.
Outdoor Unit Connections
Figure 51: Outdoor Unit Cover Removal and Piping Connection
(090HEV, 090HXV, 120HEV, 120HXV)
To rque wrench
Conduit Cover
090HEV, 090HXV
120HEV, 120HXV
Tubing Cover
Gas Piping
(Larger diameter)
Liquid Piping
(Smaller diameter)
When tightening the are nut with a torque wrench, ensure the direc-
tion for tightening follows the arrow on the wrench.
Table 26: Torque Wrench Tightening
Outside Diame-
ter (inches)
Torque (lbs-ft)
1/4
13-18
3/8
24.6-30.4
1/2
39.8-47.7
5/8
45.6-59.3
Figure 52: Pipe Attachment
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