34
Single Zone
Art Cool Gallery W
all Mounted Installation Manual
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
Outdoor Unit Connections
Single Zone Wall Mount Outdoor Unit Connections
1. Remove the tubing cover by loosening the fastening screws.
See Figure 33.
2. Align the center of the refrigerant pipe and corresponding
connection as shown in Figure 33.
3. Refer to Figure 35 for the correct liquid and gas pipe attachment
onto the 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 14.
Figure 33: Outdoor Unit Connection Cover Removal
Tubing Cover
Bracket for
Main Power Cables
When tightening the flare nut with a torque wrench, ensure the direc
-
tion for tightening follows the arrow on the wrench.
Table 14: 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
Do not thread liquid or gas piping through bracket used to hold main
power cables.
Figure 34: Pipe Attachment
Outdoor Unit
Gas Piping
(Larger diameter)
Liquid Piping
(Smaller diameter)
Torque Wrench
Bracket for
Main Power
Cables
Figure 35: Outdoor Unit Piping Connection
