Outdoor Unit Connections - LG LS090HSV5 Installation Manual

Outdoor Unit Connections

1. Remove the piping cover or piping / control box cover (configuration depends on outdoor unit model) from the unit by loosening the fas-
tening screws.
2. Align the center of the refrigerant piping and corresponding connection as shown.
3. Refer to the figures at right for liquid and gas (vapor) piping attachments onto the outdoor unit.
4. Place a couple of drops of PVE refrigerant oil on outside of the flare before assembling.
flare nut initially by hand.
5. Finish tightening the flare nut with a torque wrench until the wrench clicks. Follow torque guidelines in the table below. See figures for
correct connection points.
Figure 36: LSU090-120HSV5 Piping / Control
Box Cover Removal.
LSU090-120HSV5
Piping / Control
Figure 40: Pipe Attachment.
REFRIGERANT PIPING CONNECTIONS
Figure 37: LSU180HSV5 Piping Cover and
Control Box Cover Removal.
LSU180HSV5
Box Cover
Table 16: Torque Wrench Tightening.
Pipe Size
(in. O.D.)
1/4
3/8
1/2
5/8
3/4
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.
Terminal Block
Control
Box Cover
Piping
Cover
Outside Torque
Diameter (mm) (ft-lbs.)
6.35 13.0 - 18.0
9.52 24.6 - 30.4
12.7 39.8 - 47.7
15.88 45.4 - 59.3
19.05 71.5 - 87.5
Outdoor Unit Connections
Do not add any contaminants. Tighten the
Figure 38: LSU090-120HSV5 Piping
Connections.
LSU090-120HSV5
Liquid Piping
(Smaller Diameter)
Torque Wrench
Gas (Vapor) Piping
(Bigger Diameter)
Figure 39: LSU180HSV5 Piping Connections.
LSU180HSV5
Gas (Vapor) Piping
(Bigger Diameter)
Liquid Piping
(Smaller Diameter)
Torque Wrench
35