LG A4UQ28GFA0 Installation Manual page 18

FLARING WORK AND CONNECTION OF PIPING
18
Indoor unit installation
Hook the indoor unit onto the upper portion of
the installation plate.(Engage the two hooks of
the rear top of the indoor unit with the upper
edge of the installation plate.) Ensure that the
hooks are properly seated on the installation
plate by moving it left and right.
Press the lower left and right sides of the unit
against the installation plate until the hooks
engage into their slots(clicking sound).
Connecting the pipings to the indoor unit and
drain hose to drain pipe
- Align the center of the pipings and
sufficiently tighten the flare nut by hand.
- Tighten the flare nut with a wrench.
Outside diameter
mm inch
Ø 6.35 1/4
Ø 9.52 3/8
Ø 12.7 1/2
Ø 15.88 5/8
Ø 19.05 3/4
- When extending the drain hose at the indoor
unit, install the drain pipe.
Wrap the insulation material around the
connecting portion.
- Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl tape
so that there is no gap.
- Wrap the area which accommodates the rear
piping housing section with vinyl tape.
Torque
N m
16±2
38±4
Torque wrench
55±6
75±7
Indoor unit tubing
110±10
Drain pipe
Connection
pipe
Vinyl tape
(wide)
Flare nut
Indoor unit tubing
Vinyl tape(narrow)
Adhesive
Plastic bands
Wrap with vinyl tape
Connecting cable
Vinyl tape(narrow)
Connecting
Drain hose
Pipings
Spanner (fixed)
Flare nut
Connection pipe
Indoor unit drain hose
Insulation material
Indoor
unit pipe
Pipe