Outdoor Unit Connections - LG LS090HSV4 Installation Manual

single Zone High efficiency Wall Mount outdoor Unit Connections
1. Remove the tubing cover by loosening the fastening screws.
See Figure 36.
2. Align the center of the refrigerant pipe and corresponding
connection as shown in Figure 37.
3. Refer to Figure 38 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 contami-
nants. 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 15. See Figure
38 for correct connection points.
When tightening the flare nut with a torque wrench, ensure the direc-
tion for tightening follows the arrow on the wrench.
Table 15: Torque Wrench Tightening
Outside Diameter (inches)
1/4
3/8
1/2
5/8
Do not thread liquid or gas piping through bracket used to hold main
power cables.
Figure 37: Pipe Attachment
RefRigeRant PiPing ConneCtions
Torque (lbs-ft)
13-18
24.6-30.4
39.8-47.7
45.6-59.3
Due to our policy of continuous product innovation, some specifications may change without notification.
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Outdoor Unit Connections

Figure 36: Outdoor Unit Connection Cover Removal (HSV4)
Bracket for
Main Power Cables
Figure 38: Outdoor Unit Piping Connection (HSV4)
Outdoor Unit
Bracket for
Main Power
Cables
Tubing Cover
Liquid Piping
(Smaller diameter)
Torque Wrench
Gas Piping
(Larger diameter)
29