LG ART COOL LA150HYV2 Engineering Manual page 59

Single Zone Art Cool Premier Outdoor Unit Connections
1. Remove the tubing cover from the unit by loosening the fastening 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.
add any contaminants. Tighten the flare nut initially by hand.
4. Finish tightening the flare nut with a torque wrench until the wrench clicks.
Table 36: Torque Wrench Tightening.
Outside Diameter (Inches)
1/4
3/8
1/2
5/8
3/4
Figure 23: LAU090HYV1/LAU120HYV1 Outdoor Unit Connection Cover
Removal.
Figure 25: LAU090HYV1/LAU120HYV1 Outdoor Unit Piping Connection.
Outdoor unit
INSTALLATION & LAYOUT BEST PRACTICES
Torque (Lbs.-ft)
13-18
24.6-30.4
39.8-47.7
45.6-59.3
71.6-87.5
Tubing cover
Liquid side piping
(Smaller diameter )
Torque wrench
Gas side piping
(Bigger diameter)
Due to our policy of continuous product innovation, some specifications may change without notification.
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LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG " is a registered trademark of LG Corp.
Refrigerant Piping System Layout
Do not
When tightening the flare nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
Figure 24: LAU150HYV2/LAU180HYV2, LAU180HYV1/LSU240HYV1
Outdoor Unit Connection Cover Removal.
Figure 26: LAU150HYV2/LAU180HYV2, LAU180HYV1/LAU240HYV1
Outdoor Unit Piping Connection.
Outdoor unit
Figure 22: Pipe Attachment.
Terminal Block
Terminal
Block Cover
Tubing
Cover
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
REFRIGERANT DESIGN | 59