Outdoor Unit Connections - LG ART COOL LA090HSV4 Installation Manual

Single Zone Art Cool Mirror Outdoor Unit Connections
1. Remove the tubing cover by loosening the
fastening screws. See Figure 39 and 40.
2. Align the center of the refrigerant pipe and
corresponding connection as shown in
Figure 43.
3. Refer to Figure 41 and 42 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 assem-
bling. 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 16. See Figure 43 for
correct connection points.
Figure 43: Pipe Attachment.
When tightening the flare nut with a torque
wrench, ensure the direction for tightening fol-
lows the arrow on the wrench.
Table 16: Torque Wrench Tightening
Outside Diameter (inches)
1/4
3/8
1/2
5/8
REFRIGERANT PIPING CONNECTIONS
Figure 39: LSU090-120HSV4 Outdoor Unit
Connection Cover Removal.
Bracket for
Main Power Cables
Figure 41: LSU090-120HSV4 Outdoor Unit
Piping Connection.
Bracket for
Main Power
Cables
Torque (lbs-ft)
13-18
24.6-30.4
39.8-47.7
45.6-59.3
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Figure 40: LSU180HSV4 Outdoor Unit Connec-
tion Cover Removal.
Tubing Cover
Figure 42: LSU180HSV4 Outdoor Unit Piping
Connection.
Outdoor Unit
Liquid Piping
(Smaller diameter)
Torque Wrench
Gas Piping
(Larger diameter)
Do not thread liquid or gas piping through bracket used to hold main
power cables.

Outdoor Unit Connections

Terminal Block
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
Terminal
Block Cover
Tubing
Cover
29