LG LS180HEV2 Installation Manual page 42

REFRIGERANT PIPING CONNECTIONS
Indoor Unit Connections
Accessing and Positioning the Indoor Unit Piping / Connections (HEV2 Only), continued.
Piping Installation When Piping is on the Right Side (HEV2
Only)
See the Electrical System Installation section for information on how to connect
the communication / connection (power) wiring from the outdoor unit.
1. Align the center of the refrigerant piping and corresponding connection
as shown.
2. Place a couple of drops of refrigerant oil on outside of the flare before
assembling. Do not add any contaminants. Tighten the flare nut
initially by hand.
3. Finish tightening the flare nut with a torque wrench until the wrench
clicks. Follow torque guidelines in the table below.
tightening follows the arrow on the wrench.
4. Bundle the refrigerant piping, drain hose, and communication / con-
nection (power) cable together. Ensure that the drain hose is located
at the bottom of the bundle.
• If using a conduit for the power wiring / communications cable, see
below.
Positioning the drain hose at the top of the bundle can cause condensate to
Table 19: Torque Wrench Tightening.
Pipe Size (in. O.D.) Outside Diameter (mm)
1/4
3/8
1/2
5/8
3/4
1. Prop indoor unit away from wall bracket.
2. Guide communication / connection (power) cable insulation into the conduit.
• Check local, state, and federal codes when choosing a conduit size.
•
3. Attach conduit using the liquidtight 3/4 inch elbow connector.
4. Reassemble the indoor unit properly onto the wall bracket.
5. If conduit is not used, see pages in this section for refrigerant piping, condensate drain, power wiring / communica-
tion cable bundling information.
6. To protect the piping, condensate drain, and conduit from the elements, add a lineset cover from the indoor access
hole to the outdoor unit.
42
Torque (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
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.
Figure 59: Piping Installation When Piping is on the Right Side.
Right Side Piping
Connection
Cable
Figure 58: Indoor Unit Connection.
Indoor Unit Piping
Figure 60: Liquidtight 3/4 Inch Elbow Connector
Attached to Flexible Conduit.
Tape
Drain Hose
Piping
Flare Nut Field-
Installed
Piping