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INSTALLATION & LAYOUT BEST PRACTICES
Single Zone Extended Piping Out-
door 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 con-
nection.
3. Place a couple of drops of refrigerant oil on the opening rim of
the flare before assembling.
Tighten the flare nut initially by hand.
4. Finish tightening the flare nut with a torque wrench until the
wrench clicks.
When tightening the flare nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
Table 26: Torque Wrench Tightening
Outside Diameter (Inches)
1/4
3/8
1/2
5/8
3/4
Figure 21: Pipe Attachment
Do not add any contaminants.
Torque (Lbs.-ft)
13-18
24.6-30.4
39.8-47.7
45.6-59.3
71.6-87.5
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 System Layout
Figure 20: Outdoor Unit Connection Cover Removal
Figure 22: Heat Pump Outdoor Unit Piping Connection
Outdoor Unit
Gas Side Piping
(larger diameter)
Tubing Cover
Liquid Side Piping
(smaller diameter)
Torque Wrench
REFRIGERANT DESIGN | 51
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