Installation & Layout Best Practices - LG LS091HSV3 Engineering Manual

INSTALLATION & LAYOUT BEST PRACTICES
Single Zone Wall Mount Outdoor Unit Connections
1. Remove the tubing cover by loosening the fastening screws. See
Figure 37.
2. Align the center of the refrigerant pipe and corresponding
connection as shown in Figure 38.
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 Figure 39.
When tightening the flare nut with a torque wrench, ensure
the direction for tightening follows the arrow on the wrench..
Table 43: Torque Wrench Tightening
Outside Diameter
Torgue (lbs-ft)
(inches)
1/4 13-18
3/8 24.6-30.4
1/2 39.8-47.7
5/8 45.6-59.3
3/4
71.6-87.5
Figure 38: Pipe Attachment
Due to our policy of continuous product innovation, some specifications may change without notification.
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Figure 37: Outdoor Unit Connection Cover Removal
Figure 39: Heat Pump Outdoor Unit Piping Connection
Outdoor Unit
Gas Side Piping
(larger diameter)
Piping Connection
Tubing Cover
Liquid Side Piping
(smaller diameter)
Torque Wrench
REFRIGERANT DESIGN | 69