Connection Of Piping; Precautions In Bending - LG APNC488TLA0 Installation Manual

INSTALLATION OF UNIT
14

Connection of piping

1
Move the indoor tubing and drain hose to
the hole
- Remove tubing holder and pull the tubing
out of the chassis.
2
Replace the tubing holder into original posi-
tion
3
Route the tubing and the drain hose
staight backwards.
4
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.
5
Tape the tubing and the connecting cable.
6
Indoor unit installation.
7
Connecting the pipings to the indoor unit.
- Align the center of the pipings and suff-
ciently tighten 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 tighten-
ing follows the arrow on the wrench.
Outside diameter
mm inch
Ø6.35 1/4
Ø9.52 3/8
Ø12.7 1/2
Ø15.88 5/8
Ø19.05 3/4
Indoor unit tubing
Spanner
Spring
Torque
N m
16±2
38±4
55±6
75±7
110±10
Flare nut Pipings
Torque wrench
R70 mm
Torque wrench
Indoor unit tubing
Drain pipe
Adhesive

Precautions in bending

1
If it is necessary to bend or stretch the tub-
ing, 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
Indoor unit tubing
not to make any crack.
- Remember that the radius (R) should not
exceed 70 mm (Refer to Fig. 1)
2
Do not repeat the bending process to pre-
Spanner
vent the tubing from cracking or crushing.
3
Keep in mind that the bending part should
not be cracked and make the radius (R) as
long as possible (Refer to Fig. 2)
Spring
(Fig. 1)
(Fig. 2)
Spanner (fixed)
Flare nut
Connection pipe
Indoor unit
drain hose
Vinyl tape(narrow)
Flare nut Pipings
Torque wrench
R70 mm