Outdoor Unit Connections - LG LS180HEV2 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 below 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 40: LSU090-120HEV2 and LSU090-
120HXV Piping / Control Box Cover Removal
(Appearances Will Differ Depending on Model).
Terminal Block
Piping Connection
Cover
Figure 43: Pipe Attachment.
REFRIGERANT PIPING CONNECTIONS
Figure 41: LSU180-240HEV2 Piping / Control
Box Cover Removal.
Control Box
Cover
Table 18: 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
Piping / Control
Box 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 42: Outdoor Unit Piping Connection
(Appearances Will Differ Depending on Model).
Outdoor Unit
Vapor Side Piping
(Larger Diameter)
Liquid Side Piping
(Smaller Diameter)
Torque Wrench
37