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40
Single Zone Mega, Standard Eciency, and Mega 115V Wall Mounted Installation Manual
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.
REFRIGERANT PIPING CONNECTIONS
• Do not bend the piping directly backwards or to the left or right sides without bending it downward first; this will damage the indoor unit
piping.
• Do not forcibly press the refrigerant piping onto the bottom frame or the front grille; this will damage the indoor unit piping and / or
indoor unit frame.
• Ensure the piping is straight. Do not kink the piping; this will damage the indoor unit and piping.
Figure 49: Improper Piping Bending.
Figure 50: Keep Piping Straight;
Avoid Kinks.
Piping Installation When Piping is on the Left Side (HEV2,
HFV3, and HXV2)
• See the Electrical System Installation section for information on
how to connect the communication / connection (power) cable from
the outdoor unit.
• For left-side piping, it is recommended that the communication /
power connections are complete before starting the piping connec-
tions.
1. Insert drain hose on left (feature will differ depending on model of
indoor unit).
2. Align the center of the refrigerant piping and corresponding con-
nection as shown on the next page.
3. 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.
4. Finish tightening the flare nut with a torque wrench until the
wrench clicks. Follow torque guidelines in the table on the next
page.
When tightening the are nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
5. Bundle the refrigerant piping, drain hose, and communication /
connection (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 the next page.
Figure 51: Piping Installation When Piping is on the Left Side.
Accessing and Positioning the Indoor Unit Piping / Connections (HEV2, HFV3, and HXV2), continued.
Positioning the drain hose at the top of the bundle can cause condensate to overow from the drain pan in the inside of the indoor unit.
Indoor Unit Connections
Left Side Piping
Drain Hose
Piping
Connection
Cable
Tape
Drain Hose
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