LG ART COOL LA090HSV5 Installation Manual page 38

REFRIGERANT PIPING CONNECTIONS
Indoor Unit Connections for HSV5 Units
Piping Installation When Piping is on
the Right Side
See the Electrical System Installation section for information on how to con-
nect the communication / connection (power) wiring from the outdoor unit.
1. Align the center of the refrigerant piping and corresponding connec-
tion as shown.
2. Place a couple of drops of refrigerant oil on outside of the flare be-
fore 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.
When tightening the flare nut with a torque wrench, ensure the direction for
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
overflow from the drain pan in the inside of the indoor unit.
Table 17: Torque Wrench Tightening.
Pipe Size (in. O.D.) Outside Diameter (mm)
1/4
3/8
1/2
5/8
3/4
Using a Conduit for Indoor Unit Wiring / Cable Installation
Use a liquid tight 3/4 inch elbow connector for flexible conduit.
For systems with wiring greater than 130 feet, see the "Communication /Connection (Power) Cable Specifications
from Outdoor Unit to Indoor Unit" In the Electrical System Installation section for more information.
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 liquid tight 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 / com-
munication 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.
38
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 49: Piping Installation When Piping is on the Right Side.
Right Side Piping
Figure 50: Indoor Unit Connection.
Indoor Unit Piping
Tape
Connection
Cable
Drain Hose
Piping
Flare Nut Field-
Installed
Piping
Figure 51: Liquid tight 3/4 Inch Elbow
Connector Attached to Flexible Conduit.