Connection Of Piping; Precautions In Bending - LG AP-Z Series Service Manual

Installation of Indoor, Outdoor Unit

2. Connection of piping

Move the indoor tubing and drain hose to the hole
• Remove tubing holder and pull the tubing out of the chassis.
Replace the tubing holder into original position
Route the tubing and the drain hose staight backwards.
Insert the connecting cable into the indoor unit through the hole.
• Do not connect the cable to the indoor unit
• Make a small loop with the cable for easy connection later.
Tape the tubing and the connecting cable.
Indoor unit installation.
Connecting the pipings to the indoor unit.
• Align the center of the pipings and suffciently tight-
en the flare nut with fingers.
• Finally, tighten the flare nut with troque wrench
until the wrench clicks.
When tightening the flare nut with troque wrench,
ensure the direction for tightening follows the arrow
on the wrench.
PIPE SIZE
3/8"
1/2"
5/8"
3/4"

3. Precautions in bending

If it is necessary to bend or stretch the tubing,
use the spring which is attached to the tubing in
stead of pipe bender.
• Please make a careful notice to make a smooth
line.
• Hold the tubing with your two hands closely and
then bend or stretch it slowly not to make any
crack.
• Remember that the radius (R) should not exceed
70mm (Refer to Fig. 1)
Do not repeat the bending process to prevent the
tubing from cracking or crushing.
Keep in mind that the bending part should not be
cracked and make the radius (R) as long as possi-
ble (Refer to Fig. 2)`
28 Floor Standing Type Air Conditioner
TORQUE
4.2 Kg . m
5.5 Kg . m
5.5 Kg . m
6.5 Kg . m
Indoor unit tubing
Spanner
Spring
(Fig. 1)
(Fig. 2)
Flare nut Pipings
Torque wrench
R70mm